solar energy storage qualifications · appropriate documentation, final test reports, and project...

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distributed without the express written consent of S&C Electric Company. ©2013 S&C ELECTRIC COMPANY

WIND | SOLAR | ENERGY STORAGE QUA L I F I C A T I ON S

Table of Contents

1. Overview of S&C Wind Expertise

2. Wind Experience Listing

3. Overview of S&C Solar Expertise

4. Solar Experience Listing

5. Overview of S&C Energy Storage Expertise

6. Energy Storage Experience Listing

7. Asset Management Services for Wind, Solar, and Energy Storage

8. Sample of S&C Case Studies




Worldwide, S&C has

connected over 8 GW

of wind energy.

1. Overview of S&C Wind Expertise For over 10 years, S&C has provided end‐to‐end electrical solutions for the biggest challenges involved with connecting wind energy to the grid. The results of our commitment are over 8 giga‐watts of wind energy that is providing clean energy to the world today. From meeting leading and lagging power factor requirements to 24/7 monitoring of wind farm collector substations, S&C’s mixture of products and services are unmatched in the industry.

VAR Compensation Systems The intermittent nature of wind can create voltage stability problems on the transmission system to which a wind energy plant is connected. To prevent such occurrences, utilities and regulators have created increasingly strict grid interconnection requirements that renewable energy plants must meet…or risk production curtailment. S&C’s VAR compensation systems can help your wind energy plant conform to local grid interconnection requirements. Our team of engineers holds some of the world’s leading experts in variable generation interconnection and closely follows changing requirements to deliver expert counsel to hundreds of wind developers and builders. PureWave® DSTATCOM S&C’s PureWave DSTATCOM Distributed Static Compensator is a fast‐compensating reactive power source that’s applied on the transmission or distribution system to reduce voltage variations such as sags, surges, and flicker, along with instability caused by rapidly varying reactive power demand. PureWave DSTATCOM can also help provide quick recovery for the transmission system after contingency events such as loss of part of the system or individual equipment.




Collector Systems The collector system of your wind plant delivers wind energy from the turbines to the collector substation, and on to the transmission grid. It is a complex system that has design requirements distinctly different from typical medium‐voltage distribution systems. S&C draws on our considerable experience in designing electric distribution networks to provide services that ensure the successful design, construction, and commission of a wind farms’ collector system and substation. Our service offerings can be combined into a complete engineer‐procure‐construct (EPC) package, which includes:

‐ Interconnection and Analytical Studies ‐ Conceptual Layouts ‐ Review of local codes and requirements for switching and protection




‐ Design engineering, including physical, protection and controls, and civil engineering ‐ Procurement of all equipment ‐ Construction Management, including contractors selection, and ‐ Project Management.

Interconnection Substation The interconnection substation delivers wind energy collected from your plant to the grid. It needs to perform its function reliably, right from the start. S&C can provide a complete turnkey interconnection substation up to—and including—the final transmission line segment that connects your plant to the grid. We provide complete substation construction services including:

Analytical studies; engineering design; and installation documentation, including drawings, specifications, and bills of material

Procurement of major equipment, such as transformers and cable

Construction, including site preparation, erection of steel structures, and equipment installation, utilizing S&C‐supervised subcontractors

Acceptance and in‐service testing of all equipment, and

Commissioning, including all steps necessary to transfer the equipment to you, such as appropriate documentation, final test reports, and project as‐built drawings.

By selecting S&C to provide your interconnection substation on a turnkey basis, you can dedicate more time to other critical tasks needed to complete your wind energy plant. Your total investment cost is reduced as well, as S&C’s experienced team will streamline the design and approval processes and effectively manage construction and commissioning. 24/7 Asset Management for Wind Once S&C has connected a wind farm to the grid, our dedication continues with helping customers maintain and monitor the critical assets in their electrical systems. Our goal is to have wind owners focus on generating revenues while we focus on maximizing the operating life of their electrical power generation, transmission, and distribution equipment. More information can be found in the Asset Management portion of this Qualifications Documents.




When it comes to Wind Energy, we’re different because… We combine unmatched expertise in power factor and interconnection requirements with over 100 years working with utilities. We also deliver custom engineered products innovated to connect wind energy to the grid.

Medium‐Voltage Switchgear S&C Vista® Underground Distribution Switchgear and System VI™ Switchgear reliably control power flow from your turbines to the collector substation. They connect gigawatts of wind energy to the grid, worldwide. Both feature a compact, sealed design that protects against animal intrusion and provides superior performance in even the most challenging environments. Both also feature switches with a clearly visible open gap and integral grounding capability—for a higher level of safety for your operating personnel. Vista Switchgear offers arc‐resistant construction too, adding another layer of safety for your personnel. Vista Switchgear is available in a wide range of models that allow application throughout the wind plant collector system. Compact Wind Turbine Style fits in the base of the tower and provides switching and protection for the turbine. Pad‐Mounted Style is installed in the collector system to meet local inspection requirements for isolation of segments during maintenance. S&C’s industry‐leading medium‐voltage switchgear can also be applied at your interconnection substation. System VI Switchgear combines the features of Vista Switchgear with customer‐specified control devices, such as meters and special relays, to connect wind plants between 5 MW and 70 MW to the grid. It provides a compact, reliable, and affordable solution for this application.




2. Wind Energy Experience Listing The listing below highlights some of S&C’s wind energy projects. Some projects are omitted from this list due to confidentiality agreements with the customer. Brookfield Renewable Energy – Coram Wind Farm – 2011 thru 2012 S&C was responsible for the procurement, construction, supervision, commissioning, and field testing for the underground collector system, two (2) 66 kV substations and some overhead and underground 66 kV transmission. This project consists of 34 Vestas V90 3.0 MW wind turbine generators (WTG) on 78 meter towers generating a total of 201 MW situated near Tehachapi, California. BP Wind Energy ‐ Trinity Hills ‐ 2011 S&C provided the supply and installation of the factory‐tested +20MVAR continuous DSTATCOM System capable of either voltage controls or reactive power management control. S&C also designed, supplied and installed 2 filter banks (15 MVAR effective for each), 2 capacitor banks (15 MVAR effective for each) and 4 shunt reactors (18.5 MVAR effective for each) with S&C Model 2030 Circuit Switchers and all protective relaying for the equipment related to the reactive compensation system, located in Olney, Texas BP Wind Energy – Sherbino Mesa II ‐ 2011 S&C provided the supply and installation of the factory‐tested +12.5MVAR continuous DSTATCOM System capable of either voltage controls or reactive power management control. S&C also designed, supplied and installed 3 filter banks (15 MVAR effective for each) and 3 shunt reactors (16 MVAR effective for each) with S&C Model 2030 Circuit Switchers and all protective relaying for the equipment related to the reactive compensation system located in Fort Stockton, Texas. Edison Mission Energy – Goat Mountain – 2010 S&C provided the supply and installation of the factory‐tested +15MVAR continuous DSTATCOM System capable of either voltage controls or reactive power management control. S&C also installed 2 filter banks, 2 shunt reactors and expanded the existing substation to accommodate the reactive compensation system. Additionally, retrofit the existing capacitor switches in order to utilize the S&C Model 2030 circuit switcher. John Deere – Michigan Wind II – 2010 S&C provided detailed engineering for the collector system, collector substation transmission line and modifications to existing interconnect substation.




Puget Sound Energy – Hopkins Ridge – 2010 S&C provided the supply and installation of the factory‐tested + 8.75 MVAR continuous DSTATCOM system capable of either voltage controls or reactive power management control. John Deere – Echo Wind Farm – 2009 thru 2010 S&C provided the supply and installation of the factory‐tested + 3.75 MVAR continuous DSTATCOM system capable of either voltage controls or reactive power management control located in Oregon. Duke Energy – Silver Sage ‐ 2009 S&C provided design and specifications for collector system and collector substation. Power Partners ‐ Papalote Creek Wind Farm – 2008 thru 2009 S&C provided engineering for the collector system, substation and transmission line. Edison Mission Energy ‐ High Lonesome Wind Farm – 2008 thru 2009 S&C provided the supply and installation of the factory‐tested ±6.25 MVAR continuous DSTATCOM System capable of either voltage controls or reactive power management control. Alliant Energy – Cedar Ridge ‐ 2008 S&C provided the supply and installation of the factory‐tested ±8 MVAR continuous DSTATCOM System capable of either voltage controls or reactive power management control in Fond Du Lac, Wisconsin. Superior Renewable Energy Solutions – Argonne Mesa – 2007 S&C provided reactive compensation system, engineering and equipment for a 12 MVAR DSTATCOM for a voltage control and/or power factor correction. Brookfield Power/M. A. Mortenson ‐ Prince I & II – 2005 thr u 2006 S&C provided the design & build for the Electric System for a wind farm consisting of 66 x 1.5 MW GE wind turbine generators. EPC (Engineer, Procure and Construct) contract for the 34.5kV collector system and the wind farm 230/34.5kV substation. EPC Switching Substation 230kV. Nine (9) miles of 230kV transmission line to connect to the Great Lakes Power Grid. Executed load flow and dynamic stability studies to determine if a reactive compensation device would be necessary maintain unity power factor and wind farm ride‐through support during system fault conditions. D.H. Blattner & Sons – Kumeyaay ‐ 2005 S&C supplied Vista® switchgear units and the power factor compensation system including Pure Wave AVC and mechanically switched cap banks and reactors. EPC installation of compensation system which we are supplying.




With over 1 GW of

experience, S&C was

recently ranked as

the 12th largest utility scale solar

contractor in the

industry.

When it comes to Solar, we’re different because… 80% of a PV solar farm is the electrical system. S&C specializes in delivering products and services that focus on the customer’s values and helps them connect their solar to the local grid.

3. Overview of S&C Solar Expertise S&C specializes in the interconnection of variable generation and delivers field‐proven equipment and expertise to ensure your solar interconnection. Whether it is connecting 1 or 100+ mega‐watts, S&C works with you and the local utility to find the most economical and feasible solutions to deliver you the best long‐term value. S&C’s solar solutions include:

‐ Medium‐voltage protection and control equipment specifically engineered for solar

‐ Local contracts and working experience with major utilities ‐ Over 1 GW of expertise connecting solar to the grid ‐ World leading energy storage technologies ‐ A deep network of national suppliers ‐ Engineering, procurement, and construction services ‐ 100% on‐time completion of solar projects ‐ Proven methods to reduce lead times, construction costs and

project schedules System VI™ Switchgear When solar customers need their collection‐point substation on a tight time frame, S&C’s System VI offers the only standardized package to interconnect megawatts of solar power. Able to reduce equipment lead times by up to 60%, System VI customers have also reduced the installation time, costs and footprint of their collection‐point substation.

Solar Energy Storage

When the clouds role in or the sun sets, S&C’s PureWave Storage Management System delivers megawatts of stored energy to smooth and firm the output of solar farms. S&C is the world’s leading integrator of utility project energy storage with over 150 MWhs of storage systems online including some of the first project to tie solar to storage.




4. Solar Experience Listing The listing below highlights a majority of S&C’s solar projects. Some projects are omitted from this list due to confidentiality agreements with the customer. White Camp Solar – 100MW Solar Plant – 2013 S&C is providing AC EPC services for a 100MW solar plant being built in Girard, Texas. S&C will be responsible for design & construction of the PV collector substation, the interconnection substation and coordination with the local utility. This project will feature three units of S&C’s System VI switchgear compact substation solution. White Camp Solar – Williams 10MW Solar Plant – 2014 S&C is providing EPC services for a 10 MW solar plant being built in Ortega, Texas. S&C will be responsible for design & construction of the PV collector substation, the interconnection substation and coordination with the local utility. S&C is responsible for the AC & DC portion of this project as an EPC contractor. This project will feature one S&C System VI switchgear compact substation solution.

SunPower – Churchill 25MW Solar Plant – 2014 S&C is providing substation EPC services for the AC scope of a 25MW solar plant built in Yerginton, Nevada. S&C will be responsible for design, procurement & construction of the AC scope including the substation and interconnect with the local utility. This project will feature S&C’s System VI switchgear compact substation solution. LodeStar/SunEdison – Bridgewater 4.2MW Solar Project – 2014 S&C is providing EPC services including coordination of the interconnect with the local utility, two units of S&C’s Vista switchgear, engineering, project management, PV modules, racking system, inverters, pad‐mounted transformers, DC balance of plant, data acquisition system, site surveillance, civil construction, AC collector systems and DC & AC engineering. This 4.2MW project is located in Bridgewater, MA. McLean Energy – Lancaster 1.5MW Solar Project – 2014 S&C has hired Alion Energy to install a new racking system developed on a poured concrete base, instead of using driven steel. S&C is responsible for the AC interconnect using a System VI switchgear and is responsible for the overall wrap contract. This includes all EPC and procurement. This 1.5MW project is located in Lancaster, CA. SunEdison – Vega 15MW Solar Plant – 2014 S&C is providing EPC services for the substation and transmission lines associated with this PV installation. S&C’s scope on this project includes System VI switchgear, engineering, and project management. This 15 MW project is located in Adera, CA. This project features S&C’s System VI switchgear compact substation solution.




Green States Energy – Devens 3.6MW Solar Plant – 2014 S&C is providing EPC services including coordination of the interconnect with the local utility, two units of S&C’s Vista switchgear, engineering, project management, PV modules, racking system, inverters, pad‐mounted transformers, DC balance of plant, data acquisition system, site surveillance, civil construction and AC collector systems. This 3.6MW project is located in Devens, MA. Green States Energy – Sandwich 4MW Solar Plant – 2013 S&C is providing EPC services including coordination of the interconnect with the local utility, two units of S&C’s Vista switchgear, engineering, project management, PV modules, racking system, inverters, pad‐mounted transformers, DC balance of plant, data acquisition system, site surveillance, civil construction and AC collector systems. This 4 MW project is located in Sandwich, MA. White Construction – West Antelope (formerly called TA Acacia) 20MW Solar Plant – 2013 S&C is providing EPC services for the substation and transmission lines associated with this PV installation. S&C’s scope on this project will include System VI switchgear, engineering, and project management. This 20 MW project is located in Los Angeles, CA. This project features S&C’s System VI switchgear compact substation solution. End owner is Canadian Solar. Half Moon Ventures – Jefferson 1 1MW Solar Plant – 2013 S&C is providing EPC services including coordination of the interconnect with the local utility, one unit of System VI switchgear, engineering, project management, PV modules, racking systems, inverters, pad‐mounted transformers, DC balance of plant, data acquisition system, site surveillance, civil construction and AC collector systems. This 1 MW project is located in Jefferson, WI




Green States Energy – Roswell ‐ 2.5 MW Solar Plant – 2013 S&C provided EPC services for 25 individual projects consisting of 25‐100 kW behind the meter PV installations collocated in one municipal area. S&C built both the AC and DC systems including data acquisition and site surveillance for this project located in Roswell, NM.

SunPower Corporation – Kalaeola Solar Two 5MW Solar Plant – 2012 S&C provided EPC services for an extremely fast track 5 MW solar plant built near Barber’s Point in Oahu, HI. S&C was responsible for design, procurement & construction of the substation and the interconnect with the local utility. This project featured use of a stocked S&C’s System VI switchgear compact substation solution to accelerate the construction timeline to meet the aggressive customer schedule. OHL Industrial – Tucson Solar 20MW Solar Plant – 2012 S&C provided substation EPC services for the AC scope of a 20MW solar plant built in Painted Rocks, AZ. S&C was responsible for design, procurement & construction of the AC scope including the substation and interconnect with the local utility. This project featured S&C’s System VI switchgear compact substation solution. SunEdison/Chevron – Acacia 10MW Solar Plant– 2012 S&C provided EPC services for the construction of the collector substation for the 10MW solar plant built in Presidio, TX. S&C was responsible for the final design, procurement and the interconnection with the local utility and solar farm. S&C’s past experience with the local utility and ability to quickly supply long lead time items for the project offered unique advantages to the developer. This project features S&C’s System VI switchgear compact substation solution. M. A. Mortenson – Calico – 2009 thru 2010 S&C provided engineering and design services for a substation and collector system for a solar plant in California. The complete system will provide up to 850 MW.




M.A. Mortenson – Western Ranch – 2009 thru 2010 S&C provided engineering and design services for a substation and collector system for a solar plant in Arizona. The system will provide 27MW. M. A. Mortenson – Maricopa Pilot Plant – 2009 S&C provided field engineering oversight for the construction and start‐up of the 9MW Concentrated Solar Plant in Maricopa, Arizona.




S&C’s energy storage

expertise accounts

for 38% of the total

duration of ALL operational US

battery energy

storage systems.

5. Overview of S&C Energy Storage Expertise S&C is a global leader in energy storage, having integrated over 150 mega‐watt hours of battery energy storage over the past 10 years. These systems have been used for a variety of applications including:

Peak Shaving and Load Management

Load Following and Balancing

Renewable Generation Smoothing and Dispatch

Islanding

Frequency Regulation and Grid Stabilization

Voltage and Power Factor Regulation

Facility Power Protection

Greenhouse and Smog Causing Gas Reduction

Generation Optimization As pioneers in the field, S&C was the first to design and build an energy storage system tied to a wind farm in North America and deployed some of the first pilots of energy storage tied to solar power. We were also the first to deploy community energy storage systems on the distribution grid. S&C has designed and installed 100% of the sodium‐sulfur (NaS) battery systems in North America. The map below shows some of S&C’s global installations and their applications.




When it comes to Energy Storage, we’re different because… We deliver the three “E’s” of Energy Storage. Expertise, Experience, and Execution. No one else comes close to S&C’s number of operational battery energy storage projects in North America.

S&C specializes in battery energy storage systems ranging from 25kW – 20MW. These systems use S&C patented inverter and control technologies, which include: S&C’s PureWave® Storage Management System (SMS)

Current Source AC Ratings Power Nominal, Per

Inverter -1 MW (charge) to +1 MW (discharge)

VA Nominal, Per Inverter 1.25 MVA

Voltage 480 Vac ±10% Current Nominal 1504 A Frequency Range 58.5 to 61 Hz or 48.5 to 51 Hz

Current Harmonics Less than 5% of nominal current if voltage distortion is less than 5%

Voltage Source AC Ratings

Power Maximum 2.0 MW VA Maximum 2.5 MVA

Voltage 480 Vac ±3% Current Maximum 3008 A

Frequency 60 Hz ±0.1 Hz

Voltage Harmonics Less than 3% if load current harmonic distortion is below 5%

S&C’s PureWave® Community Energy Storage (CES) System

Ratings, Dimensions, and Weight Active and Reactive Power 25 kVA

Energy 25 - 75 kWh Secondary Voltage 240 / 120V

Battery Li-Ion Round-Trip AC Energy Efficiency > 85%

Dimensions (CES only) 50"L x 34"W x 31"H Weight (CES only) Approx. 750lbs.




S&C is not a battery manufacturer, but an integrator of battery energy storage technologies.

That being said, the batteries used in S&C’s energy storage systems must meet S&C’s strict

safety, quality, and performance metrics. As battery technologies and chemistry continue to

change, S&C will continuously evaluate new battery types for use in our systems.

The chart below highlights the wide range of energy storage technologies. The battery technologies in color are the ones S&C has the most experience implementing.




6. Energy Storage Experience Listing The listing below highlights a majority of S&C’s energy storage projects. Some projects are omitted from this list due to confidentiality agreements with the customer. Duke Marshall – 2012 250 kW, 750 kWh Superior Lithium Polymer battery (Li‐Ion). Battery uses Kokam cells & a 1MW S&C Storage Management System (SMS), paired with 1.2 MW (peak) PV solar generation. The main function of the battery is for energy shifting and peak shaving. Shimizu North America – NEDO – 2011 thru 2012 S&C has provided engineering for the 1MW NaS battery project to be located in Los Alamos, New Mexico. BC Hydro – 2 1MW NaS Battery – 2011 thru 2012 EPC installation of one (1) 1MW Sodium‐Sulfur (NaS) Energy Storage Systems located in Field, BC. The 1MW units will be used for peak shaving and distribution line support for an unreliable system. Due to the severe winter climate at both locations, the systems will be installed inside a protective building. Kansas City Power & Light – 2011 thru 2012 250 kW, 750 kWh Superior Lithium Polymer battery (Li‐Ion). Battery uses Kokam cells & a 1MW S&C Storage Management System (SMS). Southern California Edi son – 2011 S&C was responsible for installing a 1MW NaS battery system at the Peebly Beach Generating Station on Catalina Island, California. The SMS system will provide generation peak shifting to reduce the number of diesel generators online and ultimately reduce the generators NOX

emissions. PG&E – Vaca Dixon Substation – 2011 S&C was responsible for the EPC installation of a 2MW/±2.5MVA SMS battery system at the Vaca Dixon Substation in Vacaville, California. The Vac aville system is installed on the same feeder as a 10MW photovoltaic solar plant. One of the specific functions of this particular NaS system is load leveling of the photovoltaic output. Public Service of New Mexico – 2011 1 MW, 250KW for 4 hours – Advanced Lead Acid Battery System. Project utilizes two advanced lead acid technologies from East Penn Manufacturing. Advanced lead acid for load shifting the solar peak to allow for dispatching at the highest load peak. Ultrabattery for smoothing of the solar output to demonstrate the high cycling capability of the technology.




AEP – Presidio Station – 2010 S&C installed a 4MW NaS battery system at the Presidio substation in Presidio, TX. The system provides an eight (8) hour run time at 2000kW for peak shaving applications. In addition, during system outages the system will operate as an island to supply up to a maximum of 4MW of the total connected load on the distribution circuit. Chevron – Santa Rita Jail – 2010 S&C was responsible for project engineering and supply of a 2MW SMS. The 2MW system operates in a peak shaving and islanding application as part of an overall Smart Grid system in Dublin, California. PG&E – Hitachi‐GST – 2010 S&C was responsible for the entire EPC project. The 4MW system will supply power, as needed, in a peak shaving or islanding application in San Jose, California. In addition, the system provides back‐up protection for a customer facility during utility disturbances. AEP – East Busco Station – 2008 thru 2009 S&C installed a 2MW NaS battery system at the East Busco substation in Churubusco, Indiana. The system provides an eight (8) hour run time at 2000kW for peak shaving applications. In addition, during system outages the system will operate as an island to supply up to a maximum of 2MW of the total connected load on the distribution circuit. Xcel Energy – Rock County Station – 2008 thru 2009 S&C installed a 1MW NaS battery system at the Rock County substation in Luverne, Minnesota. The system ties to the utility grid through a wind power plant collector substation and demonstrates the use of energy storage systems in a load leveling application. AEP – Citizens Station – 2008 thru 2009 S&C installed a 2MW NaS battery system at the Citizens substation in Bluffton, Ohio. The system provides an eight (8) hour run time at 2000kW for peak shaving applications. In addition, during system outages the system will operate as an island to supply up to a maximum of 2MW of the total connected load on the distribution circuit. AEP – Balls Gap Station – 2007 thru 2009 S&C installed a 2MW NaS battery system at the Balls Gap substation in Milton, West Virginia. The system provides an eight (8) hour run time at 2000kW for peak shaving applications. In addition, during system outages the system will operate as an island to supply up to a maximum of 2MW of the total connected load on the distribution circuit. AEP – Chemical Station – 2005 thru 2006 This was the first system of this type installed in North America. Substation capacity expansion project involved the EPC installation of a Sodium‐Sulfur Distributed Energy Storage System (NaS DESS). The system is essentially a 1 MW UPS equipped with programmable controls to bring the unit on‐line as needed. In this application, the unit is used as a peak shaving device and is brought on‐line daily for approximately 8‐9 hours to relieve an over‐dutied substation transformer. This was the first system of this type installed in North America and has been in operation since June 2006.




7. Asset Management Services for Wind, Solar, and Energy Storage

A Balanced Approach to Asset Management

CostCost

Asset Management

To maximize the operating life of your electric power generation, transmission, and distribution equipment, you need to strike the right balance between preventative and condition-based maintenance. Too much of either one can result in excessive costs. Too little can force emergency responses when equipment problems arise.

S&C’s Asset Management solutions deliver the right balance of services to meet your specifi c needs. We can provide an asset management program that enables you to achieve and sustain your “Optimal Maintenance State,” ensuring high reliability and low costs on a long-term basis.

Global Support and Monitoring Center

S&C’s Global Support and Monitoring (GSM) Center provides 24 x 7 condition-based monitoring and support of assets, ensuring that critical equipment is performing according to manufacturing and engineering specifi cations. Staffed by S&C technical experts who can answer product questions and troubleshoot problems, the GSM Center provides a single point of contact for reliable post-sales support of your assets. The GSM Center is protected by both physical and cyber security to ensure the privacy of all customer information.

Remote Monitoring

What if your critical power equipment had a “check engine” light? With S&C’s remote monitoring services, it essentially does. We can proactively react to issues as they arise using pre-installed or deployed sensors to gather real-time condition information on equipment.

In the event conditions fall outside of normal parameters, an alert is sent to our local technical experts, who work with the asset owner to resolve the issue. Using this service can help you ensure power system reliability and extend equipment operating life to realize its full potential.

Routine Maintenance

As part of an overall Asset Management solution, S&C can perform routine maintenance on your equipment to ensure continued optimum performance. In addition to routine cleaning, lubrication, and adjustment, our fi eld service specialists can assess the condition of your equipment, replace worn components, and implement product enhancements.

Services offered include:

• Inspection

• Infrared Imaging

• CO2 Cleaning

• Repairs

• Retrofi ts

• Testing

• Spare Parts Programs

• Onsite Troubleshooting

• Lifecycle Recommendations

• Equipment Condition Reports with Photos

page 2 of four

Asset Optimization

S&C can ensure that your assets are not only maintained, but optimized for peak performance and long-term use. We can combine multiple Asset Management services to develop an asset optimization solution and strategy customized for your equipment and needs. Developing an action plan not only for your current equipment, but also for future needs, is essential to reducing the risk of service interruption and extending the life of your equipment.

An asset optimization plan includes a variety of S&C services such as:

• Remote Monitoring Services for both S&C and non-S&C power equipment

• Managed parts inventory programs

• Dedicated Customer Support Services with customer-specifi c 1-800 numbers staffed 24 x 7, every day of the year

• Routine Maintenance and Inspection Services to keep your equipment at peak performance

• Regular CO2 Cleaning Services to reduce contaminants safely, without requiring an outage

• Field Services including retrofi ts, upgrades, and emergency response services

Applications

S&C provides Asset Management solutions for critical substation equipment. The list below shows a few of the major equipment types S&C can monitor and examples of metrics we use to evaluate their health.

• Transformers

♦ Dissolved Gas Analysis (DGA)

♦ Bushing Partial Discharge

• Circuit Breakers

♦ Gas Pressure and Temperature

♦ Bushing Partial Discharge

♦ Open/Close Operations

• PureWave® DSTATCOM

♦ Real and Reactive Power

♦ System Voltages and Currents

♦ System and Inverter Availability

• PureWave® UPS Systems

♦ System Availability

♦ Run Cycles

S&C’s Asset Management solutions have been successfully applied to diverse industries worldwide.

S&C provides dedicated technical support services for a major metropolitan uti lity. This service includes a 1-800 number specifi c to the uti lity; this line is staff ed 24 x 7 year round by technical experts who know their system, methods, and equipment. All calls are routed through S&C’s Global Support and Monitoring Center, which deploys technical experts and/or parts to ensure the uti lity’s system is operati ng at peak performance.

A major wind developer uses S&C’s PureWave® CBM Conditi on Based Monitoring service to provide cloud-based monitoring of their PureWave® DSTATCOM in the southwest U.S. In the event conditi ons fall outside of normal parameters, an alert is sent to S&C’s Global Support and Monitoring Center so S&C can work with the customer to resolve the issue.

S&C provides routi ne maintenance and monitoring services to a Tier 3 data center. The 138-kV/13.8- kV substati on is routi nely inspected, tested, and maintained to support the data center’s 99.982% availability needs. Additi onally, the facility’s 138-kV main power transformer, and its circuit breaker, are being remotely monitored through S&C’s GSM Center.

Uti lity Example Renewable Example Major Power Users

page 3 of four

Rene

wab

les Leveraging more than 7 GW of

renewable energy interconnecti on experience, S&C provides a complete Asset Management soluti on and strategy, from turbines through power transmission, enabling your plant to see few outages, fewer penalti es, and more reliable power for the grid.

Maj

or P

ower

Use

rs How much does it cost you when the power goes out? For hospitals, data centers, government faciliti es, and other major power users, the answer is oft en “too much.” S&C’s Asset Management soluti ons provide the right balance of routi ne maintenance and conditi on-based monitoring to ensure that your systems conti nue to perform well into the future.

Elec

tric

Uti l

iti es For more than 100 years, electric

uti liti es have relied on S&C for innovati ve soluti ons to power system challenges. We are committ ed to our customers beyond commissioning and throughout the full lifecycle of our products. Whether proacti vely planning for equipment problems or responding to them, S&C can provide the Asset Management services and resources needed to address issues quickly and eff ecti vely.

S&C Electric Company is a global provider of equipment and services for electric power systems. Founded in 1911, the Chicago-based company designs, manufactures, and provides services for switching and protection products for electric power distribution, transmission, and generation systems.

S&C’s products help deliver electric power effi ciently and reliably. Some are used to switch circuits. Others minimize damage to equipment in the event of a fault or reduce the area of an outage by automatically rerouting power fl ow. In addition, S&C’s sophisticated power quality products can deliver uninterrupted power for an entire facility in crucial process industries.

To deliver complete solutions to our customers worldwide, S&C’s products are supported by a wide range of consulting, analytical study, engineering, testing, fi eld, and asset management services for electric utilities and commercial, industrial, and institutional power systems. Furthermore, with in-house procurement and construction management experience, S&C delivers innovative projects using a comprehensive Engineering, Procurement, and Construction approach.

Additional Contact Information:

Please e-mail [email protected]

or call your local S&C Sales Offi ce for more information or a quote.

S&C ELECTRIC COMPANY

Offices Worldwide f www.sandc.com

Descriptive Bulletin 180-36February 18, 2013©




8. Sample of S&C Case Studies

CASE STUDYPOWER QUALITY PRODUCTS

September 9, 2013© www.sandc.com/services 653-1016

customer challenge

Santa Rita Jail is one of the United States’ largest correctional facilities, spanning 113 acres near San Francisco. The jail’s power infrastructure was recently upgraded to function as a microgrid using onsite generation. This microgrid system allows the facility to operate indefinitely without a connection to the local utility grid, a capability called “islanding.” Their onsite power sources include diesel generators, fuel cells, lithium-ion batteries, and renewable resources, such as a 500-kW solar array and microturbines.

With an average daily power demand of 3 MW, Santa Rita Jail faced two major challenges. They needed a way to store excess energy produced by onsite generation during islanding to ensure microgrid stability and security. They also needed a system to help manage energy consumption charges by allowing them to purchase power during non-peak hours, store it, and then use it during high-cost peak demand periods.

s&c solutIon

S&C engineered and commissioned a highly reliable energy storage solution. They supplied and integrated a 2-MW PureWave® Storage Management System (SMS) into the jail’s microgrid. Originally engineered by S&C for a sodium-sulfur (NaS) battery, the system was re-engineered for a

2-MW/4-MWh lithium-ion battery by S&C’s project team, which coordinated with both battery suppliers to ensure proper operation of the system. S&C provided engineering services and project management for the PureWave SMS and battery installation.

S&C Featured Solution: Energy Storage

Location: Dublin, California

the entire microgrid, including s&c’s energy storage solution, is projected to save the county nearly $100,000 per year.

PureWave® storage management system Fortifies california Jail’s microgrid

The first “green” jail in the U.S., Santa Rita uses a microgrid and onsite renewable generation.

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S&C’s SMS controls the charging and discharging of the large-scale battery system to help meet the jail’s energy needs. When the facility is islanded from the grid, the SMS balances the generation sources through its energy storage and CERTS algorithm. It does this by automatically and instantly storing excess energy when the facility’s onsite generation exceeds demand and dispatching stored energy to the microgrid when demand exceeds generation.

S&C’s PureWave® SMS has advanced control algorithms, which allow for the jail’s microgrid to island automatically when their utility source is lost. This capability ensures that the intermittent renewable resources provide reliable, stable power generation for the jail for up to eight hours . . . ample time for utility power to be restored or to bring diesel generators online.

ValueD outcome

S&C completed engineering delivery and commissioning of the SMS on schedule and within budget in early 2012. Using S&C’s PureWave Storage Management System, Santa Rita Jail can now optimally manage energy use and costs. The facility can charge its 2-MW battery system using onsite renewable resources when grid electricity is more expensive. Upon receiving a signal from Chevron’s Control System,

the batteries can be dispatched and used during high-cost peak hours—capabilities projected to save nearly $100,000 annually. S&C’s SMS also bolsters the security and reliability of the jail’s power infrastructure. In addition, by enabling more efficient use of onsite renewables, the SMS helps the facility offset the use of diesel generators . . . and reduce carbon emissions.

PureWave® Storage Management System Fortifies California Jail’s Microgrid

S&C’s PureWave® SMS ensures 24x7 power availability and reliability at Santa Rita.

CASE STUDYENERGY STORAGE

December 16, 2013© www.sandc.com/services 180-1064


Location: British Columbia, Canada

S&C’s PureWave® Storage Management System controls a 1-MW battery, which supplies clean, reliable power to a town with frequent, extended outages.

Canada’s First Utility-Scale Energy Storage System Islands Remote Town During Outages

“With S&C’s battery system, we can supply power to Field for about seven hours, which gives us the opportunity to repair the line.”

--Helen Whittaker, Manager of Technology Innovation, BC Hydro

Completed 1-MW BC Hydro Energy Storage System at Field Substation

Customer ChallengeNestled in the Canadian Rockies, the remote town of Field relies on one 25-kV distribution feeder, provided by BC Hydro, to supply its 300 residents with power. But providing reliable power to Field is challenging. Not only is the town located 55 km from the substation in Golden, the feeder runs along a railway line, making access and repair work difficult, time-consuming, and costly.

Due to the geography and climate, faults frequently affect the power line, causing extended outages. Crews must coordinate with the rail system to avoid trains and travel along the rail route to locate the fault and repair the line, often in formidable weather. These factors result in longer-than-average response times for power restoration, impacting every resident in the Town of Field.

BC Hydro needed an innovative energy storage technology solution that could swiftly respond to faults by supplying reliable power to Field for extended periods, giving crews time to repair the line and minimizing service disruptions. Not only did BC Hydro seek improved power reliability for Field through “islanding,” they wanted to reduce peak load, use clean power to cut greenhouse gas emissions, extend the lives of transformers, and eliminate the need for diesel backup generators —all within a set budget.

S&C SolutionBC Hydro chose S&C for the project because of the company’s extensive experience with large-scale, battery-based energy storage systems. S&C proposed a complete energy storage solution, including all engineering, procurement, and construction services.

The solution enabled BC Hydro to achieve all of their goals, from islanding to using clean power. S&C’s proposal also helped BC Hydro to obtain 50% of the project’s funding from Natural Resources Canada (NRC).

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Canada’s First Utility-Scale Energy Storage System Islands Remote Town During Outages

S&C’s solution includes a 1-MW NGK sodium-sulfur (NaS) battery and an S&C PureWave® Storage Management System (SMS), which controls battery charging and discharging. It also includes S&C’s IntelliRupter® PulseCloser for fault detection, S&C’s System VI™ Switchgear, and S&C’s IntelliTeam® SG Automatic Restoration System for peak shaving and transitions between the battery and grid. S&C SpeedNet™ Radios provide fast, two-way communication to help speed restoration.

The first of its kind in Canada, BC Hydro’s battery storage facility is 5 km south of Field and supplies uninterruptible power to the entire town for approximately seven hours during outages. Due to extremely cold temperatures, the battery is housed in a prefabricated building. When the demand in Field is low, the battery charges from the grid. This ensures the system is available to supply power during outages or use for peak shaving. When a fault occurs, S&C’s IntelliRupter detects and isolates the upstream fault while signaling the SMS to start discharging battery power, a seamless process that takes seconds.

In addition to providing islanding, the battery is scheduled through the SMS to supply power during peak demand periods. This added capacity lessens the load on system components, extends the life of transformers at the Golden substation, and reduces greenhouse gas emissions by eliminating the need for diesel-powered backup generators.

ResultsS&C’s energy storage solution met all of BC Hydro’s expectations, and the project was completed on time and within budget. Field residents now have reliable, clean power available for islanding, greatly reducing outage durations while also reducing the peak demand of the town.

In the first six months of system operation, six major events occurred, ranging from trees falling on the lines to broken poles. Every time, S&C’s system operated flawlessly to avoid an outage, supplying Field with battery power for a total of 40 hours over just

six months. In fact, during the facility’s ribbon-cutting ceremony, a line fault occurred when a feeder pole was broken. S&C’s solution quickly demonstrated its value by islanding the town for eight hours until grid power was restored.

This pivotal project promises to accelerate the adoption and integration of innovative energy storage technologies into Canada’s grid. With S&C’s PureWave Storage Management System and large-scale battery storage, BC Hydro ensures that residents of British Columbia benefit from cleaner, more reliable power.

Construction of energy storage system, enclosure, and controls at Field Substation

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CASE STUDYPOWER SYSTEMS SOLUTIONS


S&C Featured Solution: Asset Maintenance and Monitoring Services

Location: Southern United States

S&C provides 24x7 remote monitoring of a municipal water district’s substation transformers to avoid outages and asset damage.

S&C’s Asset Management Helps Municipal Water District Prevent Costly Outages

“By proactively monitoring and maintaining the district’s assets within their substations, S&C is helping ensure the continued distribution of water to millions of people in the region.”

--Wanda Reder, Vice President– Power System Solutions, S&C Electric Company

One of the three substations being monitored and maintained by S&C

Customer ChallengeDuring a routine inspection of a municipal water district substation, an employee discovered that two transformers were operating in parallel due to a closed tie breaker. For more than two weeks, each transformer’s load tap changer was adjusting the voltage on the same load, a situation with high potential for causing costly outages and equipment damage. Had the problem continued unnoticed and led to a substation outage, utility pumping stations would have lost power, leaving up to 1.6 million residents without water in a hot climate. Millions of dollars in damages could also have been incurred.

After resolving the problem and averting a dire situation, the municipal water district recognized the need for assistance with inspection, maintenance, and monitoring of its critical substation assets, including its main power transformers and circuit breakers. Because the municipal water district owns and operates just three substations, having their own monitoring and control center was not economical. They wanted an experienced partner who could provide an efficient, reliable way to monitor their substations to prevent unplanned outages and equipment damage.

S&C SolutionThe municipal water district sought assistance from S&C for monitoring and management of its substation assets. After assessing the customer’s requirements, S&C determined that remote 24x7 monitoring was the optimum solution. The municipal water district enlisted S&C’s Global Support and Monitoring Center (GSMC) to provide continuous, remote monitoring of its main power transformers, circuit breakers, bus-tie breakers, and circuit-switchers. S&C installed sensors on the equipment, including seven transformers in the

municipal water district substations to connect them directly to the GSMC.

The sensors provide real-time information on equipment conditions, allowing S&C’s GSMC technicians to assess internal components using metrics to determine when corrective action is needed. For example, the sensors enable S&C to conduct a Dissolved Gas Analysis (DGA), which gauges gas levels developed within a transformer by

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S&C’s Asset Management Capability

Helps Municipal Water District Prevent

Costly Outages

incipient faults. The levels of specific gases, such as the hydrocarbon acetylene, alert GSMC technicians to the presence of internal arcing and potential future equipment failure. Technicians can also measure bushing partial discharge as well as gas pressure and temperature of the water district’s substation circuit breakers.

When any equipment conditions fall outside of normal parameters, GSMC technicians have the information needed to pinpoint causes. They immediately notify the water district and start taking corrective actions, including dispatching an S&C field services crew if necessary. By relying on the GSMC, the water district benefits from swifter response times to equipment issues so that outages are abbreviated or altogether avoided.

By continuously monitoring the water district’s transformers and other critical assets, S&C’s GSMC can detect most issues before they impact performance. But to ensure that all equipment is operating safely and reliably, S&C also performs routine annual inspections and maintenance on the customer’s three substations. Field technicians document all equipment conditions and even conduct infrared inspections to identify hidden issues and ensure that all substation assets can continue to operate well into the future.

Valued OutcomeS&C’s Asset Management is exceeding the customer’s expectations. By providing comprehensive inspection, maintenance, and monitoring services, S&C is helping ensure that all of the municipal water district’s substations operate reliably around the clock, 365 days a year. If a problem arises, S&C is prepared to quickly identify it, notify the customer, and initiate preventative or corrective actions within minutes. By partnering with S&C, the water district is preventing costly unplanned system outages, receiving timely asset maintenance, extending equipment life, and ensuring an even more reliable water supply for its district residents.

Monitoring screen showing status of a 138 kV to 26.4 kV substation transformer.

Visual status screen monitored through S&C’s GSMC for a 138 kV to 26.4 kV substation.

CASE STUDYRENEWABLE INTEGRATION SOLUTIONS

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S&C Featured Solution: Renewable Energy Interconnection

Location: Oahu, Hawaii

S&C swiftly installed System VI™ Switchgear to energize a Hawaiian solar farm on schedule.

S&C Rapidly Completes Collection-Point Substation for Solar Farm in Hawaii

CUSTOMER CHALLENGE

Connecting renewable energy plants to the grid is vital for U.S. states like Hawaii that have renewable portfolio standards. Hawaii aims to have renewable energy sources provide 40 percent of the state’s electricity by December 31, 2030.

The developer of a 5-MW Solar Farm in Oahu sought to have their plant constructed and operational in just four months. To meet this aggressive in-service date, the developer needed to substantially reduce the lead time for the collection-point substation, including equipment procurement, installation, and commissioning.

S&C SOLUTION

The developer valued S&C’s extensive expertise in utility power systems and renewable power interconnection, and approached S&C for assistance. S&C worked with the developer and the local utility to develop a preliminary design for the collection-point substation using S&C’s System VI™ Switchgear. System VI Switchgear would not only accelerate project completion, but would reduce the cost and footprint of the substation as well. After the preliminary design was approved, S&C was contracted to engineer, procure, and manage the construction and commissioning of the switchgear.

System VI Switchgear is based on S&C’s fi eld-proven Vista® Underground Distribution Switchgear, which has been used in thousands of applications worldwide, including wind and solar energy plants. The System VI Switchgear solution provides high-voltage protection and control in a pre-engineered package that’s smaller and more economical. Since it features a relay enclosure, the S&C solution eliminated the need to design and construct a costly control building. S&C was able to deliver the switchgear in just 10 weeks to help meet the customer’s energization deadline.

Aerial view of 5-MW Solar Farm in Oahu, Hawaii.

“S&C’s System VI Switchgear made the three-month construction schedule for this project possible by reducing the lead time of the equipment and allowing for the construction of the substation in a fraction of the time it would normally take.”

-—Dan Girard, Director of Renewable Energy

and Energy Storage Business Development,

S&C Electric Company

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S&C Rapidly Completes Collec on-Point Substa on for Solar Farm in Hawaii

One of the challenges of the project was procuring material . . . and delivering it quickly, half-way across the Pacifi c Ocean. With its extensive supplier network, S&C was able to rapidly procure and deliver the necessary components. Construction of the switchgear started in September and was completed in just three months.

S&C’s engineering groups and project managers worked hand-in-hand to coordinate the preparation of drawings and switchgear construction. S&C commissioned the project, as well as set up the Supervisory Control and Data Acquisition system that permits the utility to monitor and control the substation as needed.

Collection-point substation featuring S&C’s System VI Switchgear.

VALUED OUTCOME

S&C completed the collection-point substation ahead of schedule. The plant was energized and, at the time of its completion, was the largest solar farm on the island of Oahu. According to EPA estimates, the solar farm will off set almost 190,000 tons of carbon dioxide emissions and 400,000 barrels of oil over the 20-year term of its power purchase agreement. The solar farm has brought the State of Hawaii one step closer to having 40% of its energy come from renewable sources by 2030.

CASE STUDYMICROGRID

August 12, 2013© www.sandc.com/services 180-1060

CUSTOMER CHALLENGE

Pacific Gas & Electric (PG&E) needed to improve power reliability for a major customer, a research facility that conducts sensitive experiments which can take weeks or months to complete. Any power outage, brief or sustained, can disrupt research, resulting in significant costs to the customer due to lost data and personnel time.

PG&E supplies power to this facility through two 21-kV feeders from a local substation. The main switchgear has two incoming source bays but no source-transfer capability. When a sustained outage occurs, it takes several hours to reconfigure the feeders and re-energize the facility. Even brief power disturbances can shut down senstive research equipment. PG&E needed a system that could swiftly intervene to sustain the facility’s load for hours during an outage. In addition to this critical “islanding” capability, they wanted the system to peak shaving during times of high system demand.

S&C SOLUTION

S&C provided the storage management system to control the interface between the NaS battery and the grid. They integrated a 5-MVA/4-MW S&C PureWave® Storage Management System (SMS), the NaS batteries, and S&C System VI™ Switchgear which connects to the facility’s existing switchgear. In less than 70 milli-seconds, the System VI Switchgear detects a loss of grid power, islands the facility from the grid and the PureWave SMS starts discharging the batteries, ensuring no power disruption to facility equipment.

The battery system can support the facility’s power requirements for more than eight hours. When service is restored, the PureWave SMS synchronizes to the grid and signals the System VI Switchgear to perform a seamless closed transition. After the facility is back on grid power, the batteries are commanded to stop discharging and start recharging.

In addition to installing the NaS batteries and S&C products at PG&E’s customer site, S&C delivered a complete microgrid solution by engineering, procuring, and constructing the system which included installation of two 3-MVA power transformers, two 480-V automatic transfer switches, four 150-kVA dry-type transformers, a 600-kW backup diesel generator, relaying and SCADA equipment, power cable, control wire, and fiber optics.

To maximize the benefits of PG&E’s Yerba Buena Energy Storage System, S&C also designed it for peak shaving.

S&C Featured Solution: Microgrids

Location: San Jose, California

S&C engineered PG&E’s Yerba Buena PureWave Storage Management System to power the research facility during grid outages without any disruption in operations.

S&C Builds Microgrid to Improve Power Reliability for Research Facility

Arial view of the PG&E Yerba Buena PureWave Energy Storage System Under Constructiotn

“TBD.Jon Erik Thalman?”

Pacific Gas & Electric

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During peak demand periods, the system discharges the batteries to support the power needs of the research facility and the local community. During low demand, the system recharges from the grid so it can supply power back to the local community when demand rises again.

VALUED OUTCOME

S&C successfully collaborated with PG&E to develop and deploy a microgrid utilizing a utility-scale energy storage system that provides reliable backup power and improves power quality for PG&E’s research facility customer. In addition, the microgrid is being used to offset the peak demand of the local community, improving PG&E’s system efficiency.

The microgrid was completed on-time and commissioned for peak-shaving shortly thereafter. Commissioning of the islanding functionality is being planned for later in the year when the customer can take a planned outage.

The energy storage system is currently the largest system of its kind in California. By supplying stored energy to the grid, PG&E’s Yerba Buena Energy Storage System is also helping California meet its goal of 1.3GW of energy storage by 2020.

S&C Microgrid Solution Improves Power Reliability for Research Facility

Installation of S&C’s PureWave® SMS and System VI™ Switchgear

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CASE STUDYSOLAR SOLUTIONS


CUSTOMER CHALLENGE

The original developer of the Picture Rocks Solar Farm wanted to connect their 20-MW plant to the local utility grid by the end of 2012. Housing nearly 90,000 photovoltaic modules, the new plant would provide power sufficient for 3,500 homes, and help meet Arizona’s goal of generating 15% of the state’s energy from renewable energy sources by 2025.

But to meet the energization deadline, the developer needed the asistance of a renewable energy integration partner capable of quickly engineering, procuring, and constructing the connection substation—including the controls and metering which tie the plant’s collector system to the utility’s transmission substation. To secure the project funding, this partner would need to be able to rapidly prepare a preliminary substation design, along with cost and work scope estimates. The developer sought assistance from S&C Electric Company.

S&C SOLUTION

S&C was able to compress the typical 90-day project to just 50 days.

With its vast renewable energy expertise and input from the utility, S&C developed the preliminary substation design. S&C also provided the estimates that the developer needed to secure financing for the project. This preliminary design work was instrumental in meeting the energization deadline, since it allowed procurement of substation materials and equipment to commence almost immediately, including the controls and metering equipment which connect the plant’s 34.5-kV collector system to the utility’s 46-kV transmission substation.

In addition to supplying field-proven S&C System VI™ Switchgear and a 69-kV S&C Series 2000 Circuit Switcher, S&C procured a 20-MVA power transformer, a grounding transformer, all substation steel, and medium-voltage underground cable.

Because S&C worked closely with the utility during the design phase, approval to construct was received promptly. The construction phase was further accelerated by S&C’s ability to manufacture and ship the System VI™ Switchgear—which is designed specifically for solar

S&C Featured Solution: Engineering, Procurement, and Construction Services

Location: Marana, Arizona

S&C completed the Picture Rocks Solar Farm connection substation and tied it into the local electric grid ahead of schedule.

S&C Connects 20-MW Solar Plant to Arizona’s Grid

“If not for S&C’s long-standing relationship with the local utility, this project would not have been approved and completed in the timeframe the developer needed.”

--Daniel Girard, S&C’s Director – Renewable Energy & Energy Storage Business Development

Aerial view of completed 34.5-kV / 46-kV substation and solar plant.

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S&C System VI Switchgear for solar plants accelerated project completion.

plants—in a compressed timeframe. Based on S&C’s Vista® Underground Distribution Switchgear that’s used in thousands of applications worldwide, System VI™ Switchgear helps standardize the design of solar plants and cut installation time. And since System VI Switchgear features a relay enclosure, S&C was able to construct the substation without the need for a control building . . . reducing costs

and construction time.

Throughout the project, S&C maintained on-site safety and quality control. S&C also conducted substation equipment testing and commissioning. In addition, S&C tested all of the relaying and monitoring systems to ensure proper operation.

VALUED OUTCOME

S&C surpassed the developer’s expectations by completing the Picture Rocks Solar Farm connection substation project six weeks ahead of schedule, within budget, and without any recordable safety incidents. Swift project completion enabled the developer to energize the plant before the December 21, 2012 deadline, and maximize their return on investment.

Picture Rocks Solar Farm currently provides 20 MW of clean energy to Arizona’s grid, helping meet the state’s renewable energy goals.

S&C Connects 20-MW Solar Plant to Arizona’s Grid

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CASE STUDYRENEWABLES


S&C Featured Solution: Renewable Energy InterconnectionLocation: Mojave, California

customer challenge

Brookfield Tehachapi 1★ (BT-1) needed to increase its production capacity to comply with California’s aggressive renewable energy initiative, which requires that 33% of the state’s energy come from renewable energy sources by 2020. The wind farm’s owners, Brookfield, sought to expand capacity by 102 MW in just 10 months. An additional 34 3.0-MW wind turbines would be needed, along with a new collector system, 30-MVA substation, 100-MVA substation, and 69-kV transmission tie-in to the electric grid.

To meet the compressed schedule for the project, the owners needed renewable energy integration experts who could procure and construct a complete wind farm-to-grid interconnection solution, including all necessary electrical systems, and fully integrated with the existing SCADA system. Upgrading the wind farm’s infrastructure economically, with minimal downtime, was crucial to meeting financial and renewable energy goals.

s&c solutIon

Brookfield’s general contractor, Mortenson Construction, sought assistance from S&C to fulfill these requirements.

S&C immediately began procurement and construction of all the electrical systems necessary to connect the new wind turbines to the grid, including the overhead and underground collector systems, the substations, control buildings, transmission cables, and transmission tie-in. S&C also supplied 38-kV Wind Turbine Style Vista® Switchgear for the collector circuits of the wind turbines.

★ Previously known as Coram Ridge Wind Farm.

s&c quickly resolved renewable energy integration challenges to boost wind farm capacity by 102 mW.

s&c helps california Wind Farm rapidly expand capacity

Aerial view of the BT-1 interconnection substation.

customer Quote: “The project’s location in the Mojave Desert presented a variety of challenges. S&C was able to overcome these and other issues to assure the two substations were energized per our deadline.”

Travis Dees, Brookfield—Operations Manager

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S&C provided a detailed commissioning plan, which encompassed NETA testing requirements, energization procedures, SCADA integration, a VAR control scheme, and California ISO (CAISO) requirements. Then S&C worked closely with all project stakeholders and Brookfield to successfully coordinate these initiatives.

S&C provided end-to-end project and construction management and used its preferred supplier relationships to expedite procurement of equipment and materials. S&C also implemented and supervised all quality assurance and quality control functions, plus a comprehensive, full-time site safety program. Experienced subcontractors were used to accelerate multiple facets of the project.

S&C constructed and commissioned the control buildings and the two substations. And S&C installed 13.3 miles of 34.5-kV collector system cables and lines, 1.8 miles of 34.5-kV overhead transmission lines, 3.5 miles of 69-kV underground transmission duct banks, and 9.3 miles of 69-kV underground transmission lines. S&C coordinated all cable testing and commissioning.

To meet the fast-approaching energization deadline, S&C’s team stepped in to engineer, integrate, and commission the SCADA system, coordinating with the engineering firm of record. With decades of SCADA experience, S&C developed a SCADA system that ensured secure, reliable communication between the wind farm substations and the utility.

Valued outcome

S&C met the customer’s expectations by completing the project on time, despite numerous obstacles. S&C fulfilled all the complex technical integration challenges. S&C employees and subcontractors worked 168,000 person-hours with zero lost-day incidents. The project received high marks on all safety and environmental audits.

The expanded-capacity wind farm became operational in 2012, supplying an additional 102 MW of clean energy to California’s grid . . . enough to power approximately 26,000 homes.

S&C Helps California Wind Farm Rapidly Expand Capacity

S&C engineers commissioning the BT-1 SCADA system.

Scan this code on your smart phone or tablet to watch a video showing the construction of this project.

34.5-kV transmission with 100-MVA transformer.

CASE STUDYPOWER SYSTEMS SERVICES

June 10, 2013© www.sandc.com/services 180-1057

customer challenge

Catalina Island—a historic landmark 22 miles off the coast of Long Beach, California—has a population of approximately 3,700 people. There’s no utility tie to the mainland. The island microgrid has a peak load of 5 MW which is served by Southern California Edison (SCE) through a combination of six diesel generators and 1.4 MW of micro-turbines.

The diesel generators were deemed to be high emitters of mono-nitrogen oxide (NOx) gases by the South Coast Air Quality Management District. To mitigate these greenhouse gas emissions, SCE installed emissions control systems which convert the gases into water. But the catalyst for this conversion is only effective at a specific temperature range, which is reached when the generators are run above 80% load.

SCE needed a solution that would allow the generators to run more efficiently, and thus reduce NOx emissions on the island.

s&c solutIon

S&C was contracted by SCE to design, install, and commission a 1-MW PureWave® Storage Management System to efficiently store and release power from the island’s generators. This fast-responding automatic controller uses built-in intelligence to control charging and discharging of sodium-sulfur (NaS) batteries. The batteries provide large energy output over a long period of time.


Location: Catalina Island, California

s&c delivered a 1-mW PureWave storage management system to help reduce the nox emissions on catalina Island, california.

Island energy storage reduces greenhouse gas emissions

Placement of PureWave Storage Management System during construction.

Load profile of PureWave Storage Management System over a 72-hour period.

“The PureWave Storage Management System has been very effective in enabling SCE to continue to provide the single source of stable, reliable power generation for the island while meeting our strict air quality requirements.”

Ron Hite—SCE—District Manager—Catalina Island

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The PureWave System allows the batteries to serve as both a load and a generator. In the morning, SCE runs the generators at peak efficiency; the PureWave System off-loads the excess power, charging the batteries. Later in the day, as the load increases, SCE discharges the batteries to support it. System output is ramped up as additional generation capacity is placed on-line.

The PureWave System can also provide power to the microgrid (up to the capacity of the batteries) if there is an issue with a diesel generator which prevents it from being brought on-line.

Working with local California contractors, S&C started construction in July 2011. S&C worked with SCE to provide centralized control of the PureWave System functions by the utility’s system operators, allowing them to remotely control charging and discharging of the batteries.

ValueD outcome

The NaS batteries were brought on-line in the spring of 2012, with full project completion in July 2012. The project was delivered under SCE’s expected budget. Today, the PureWave Storage Management System is helping SCE reduce greenhouse gas emissions on Catalina Island.

Island Energy Storage Reduces Greenhouse Gas Emissions

Completed PureWave Storage Management System.


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customer challenge

A major wind developer needed to design, construct, and begin operating a 90-MW, 50-turbine wind plant in the short timeframe of approximately 12 months. They required engineering, procurement, and construction services for the collector system, collector substation, and interconnection transmission line. The developer faced two major deadlines . . . substation transformer and collector system energization within six months for turbine commissioning, and plant completion and commercial operations within 12 months. Significant work needed to be done during winter months, further compounding their challenges.

s&c solutIon

The developer sought assistance from S&C to meet their tight schedule, which required a Commercial Operation Date (COD) by the end of December 2011. Using their extensive experience in wind plant delivery, S&C immediately began providing EPC services for the collector system, substation, and interconnection transmission line. S&C also retrofitted the existing interconnection substation.

The project required installing four 34.5-kV collector circuits totaling 275,000 linear feet, constructing a step-up substation, expanding an existing substation, and installing 63,360 linear feet of 120-kV transmission line.

S&C’s EPC approach enabled overlapping of the design and construction phases, shortening the timeline. To further expedite the project, S&C quickly identified equipment and materials with long procurement lead time and leveraged preferred supplier relationships to move resources into the production pipeline fast.

S&C Featured Solution: Engineering, Procurement, and Construction (EPC) Services

Location: Northern United States

s&c brought a leading wind developer’s first commercial plant online fast to provide clean energy to more than 30,000 homes.

s&c Provides expedited Delivery of a 90-mW Wind Plant

“This project shows how S&C adapts and works with our customers to overcome multiple challenges to meet their project schedule.”

Vice President—Power Systems Services

Wind plant collector substation.

Trencher installing collector circuit.

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Because construction began during a February thaw, frost laws applied. Soft ground restricted axle weight, speed, and vehicle operation times. It also limited working hours. S&C compensated for conditions by bringing in a second trencher to help install the underground collector system on schedule.

The retrofit, which required an outage, connected the existing substation to the new one, and tied the plant to the grid. S&C installed two 138-kV breakers, two 138-kV switches, 138-kV metering equipment, protective relaying and SCADA, and an H-frame deadend structure for the new transmission line. To minimize customer impact, S&C quickly planned and completed the project retrofit within an 11-day outage.

During substation construction, S&C subcontractors worked in parallel to wire the yard equipment to the control house, while testing was conducted in the yard. As a result, they met the substation’s energization date.

S&C also found that the steel transmission poles required additional support. Because the landowner did not want to use guy wires, S&C provided concrete foundations. They even adjusted the spacing between poles, so farm equipment could navigate around them.

ValueD outcome

S&C met all of the wind developer’s expectations . . . and all of the project’s challenges by employing innovative solutions that allowed on-time project completion. In addition, use of a comprehensive safety education and training manual helped ensure no lost-time injuries. The wind plant became operational on December 31, 2011, and provides 90 MW of clean energy to the electric grid.

S&C Provides Expedited Delivery of a 90-MW Wind Plant

Installing transformer in new substation.



CUSTOMER CHALLENGE

A major North American wind developer wanted to build a large wind plant along the Gulf Coast. Their goal was to generate approximately 200 MW of renewable wind energy annually, enough to power nearly 54,000 homes. They chose this location because coastal winds could produce more power during peak demand periods than plants farther inland. The plant would be their first U.S. and first coastal project using more than 100 Vestas® V82 1.65-MW wind turbines.

The developer needed a highly reliable, efficient collector system to deliver wind energy from the turbines to a collector substation . . . and then on to the transmission grid. They needed an innovative solution that would cut up-front and operating costs, minimize power losses, and protect their equipment investments. And, they needed this complex system engineered and completed in a relatively short timeframe, so that they could quickly realize returns from their new plant and deliver clean power to the grid.

S&C Featured Solution: Renewable Energy Interconnection

Location: Southeastern United States

Innovative Collector System Reduces Wind Plant Costs

“The successful completion of this project helped prove the value of grounding breakers as an economical alternative for protecting critical equipment at wind plants.”

—Dan Girard, Director of Renewable Energy and Energy Storage Business Development, S&C

S&C SOLUTION

Because of its experience developing collector systems for wind plants of all sizes, S&C was chosen to plan, design, and commission the collector system and interconnection substation. To protect the plant’s turbines and other equipment, and ensure efficient operations, a well-designed grounding system was needed. Typically, wind farms use grounding transformers to limit temporary overvoltages

due to faults on the collector system. Without grounding transformers, overvoltages can damage collector system cables, arrestors, and the wind turbine transformer. But installing a grounding transformer on every feeder would increase equipment, labor, engineering, and installation costs, as well as the substation’s footprint.

S&C’s solution delivered groundbreaking benefits to a major wind plant, including almost $1 million in savings.

Wind plant’s 138-kV bus and interconnect, engineered by S&C.

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S&C had a much more economical, innovative solution in mind . . . grounding breakers, an emerging alternative to grounding transformers. The industry was just starting to use grounding breakers in wind plant collector systems with positive results, and S&C knew they were the right fit for the project. By eliminating grounding transformers’ high costs and core losses, grounding breakers provided significant up-front and long-term savings, while increasing system efficiency.

S&C’s comprehensive services and end-to-end project management provided the groundbreaking solution this developer needed. S&C’s services included complete engineering studies, planning, system installation, testing, and commissioning. S&C ensured that all of the customer’s SCADA components communicated properly . . . and they implemented effective fault protection and coordination systems, including programming all protective devices and schemes.

Innovative Collector System Reduces Wind Plant Costs

Aerial view of wind plant substation, turbines, and laydown yard.

Pad-mounted transformer connected to wind turbine base.

VALUED OUTCOME

S&C delivered a collector system and interconnection substation that met the customer’s specifications and schedule . . . while dramatically reducing their wind plant costs and helping increase efficiency with grounding breakers. The customer estimated their initial savings at close to one million dollars. S&C also conducted onsite support and training to ensure that the customer’s personnel had a solid grasp on every aspect of system and substation operations. With S&C’s assistance, this Gulf Coast wind plant started operations in 2009 and continues to feed renewable energy reliably and economically to the grid.

CASE STUDYENERGY STORAGE SOLUTIONS

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Customer ChallengeAmerican Electric Power (AEP), headquartered in Columbus, Ohio, had a Department of Energy goal to implement energy storage as a Smart Grid technology. To fulfill that goal, Appalachian Power Company (APCO), an Operating Unit of AEP, considered a battery-based energy storage system for their 17-mile-long 34.5-kV feeder (152 miles of circuit exposure) located in Milton, West Virginia. That feeder, situated in very challenging terrain, was experiencing reliability issues.

S&C SolutionAPCO contracted with S&C to implement the project on a complete turnkey basis. S&C furnished the necessary project and construction management, engineering and design services, plus subgrade work and foundations, along with procurement, installation,

testing, and commissioning of the energy storage system. The system—controlled by S&C’s unique IntelliTeam® II Automatic Restoration System—includes an S&C PureWave® Storage Management System, a 2-MW NGK sodium-sulfur battery, four S&C Scada-Mate® Switches with 5801 Automatic Switch Controls, and two reclosers equipped with S&C Universal Interface Module (now called IntelliNode™ Interface Module).

IntelliTEAM II controls and operates the feeder devices to automatically engage the battery as an alternate source. If the load exceeds battery capacity, IntelliTEAM II will automatically operate the feeder devices, reconfiguring the system as necessary. The system can serve customers up to seven hours at continuous maximum output, however it can serve customers longer if their demand is less than the maximum rating of the system.

America’s First Battery-Based Energy Storage System for Islanding ApplicationsS&C Featured Solution: Turnkey Energy Storage

Location: Balls Gap Road, Milton, West Virginia

It’s the first U.S. application of a battery serving radially-fed distribution system loads during periods when they are isolated from the grid (or “islanded”) by a fault that locks out normal service.

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Valued OutcomeThe Balls Gap Distributed Energy Storage System was commissioned in two phases. The project was first commissioned for peak shaving, allowing deferral of capacity expansion at APCO’s Milton Station. This allowed deferral of the capital expense associated with four miles of new 138-kV transmission lines, as well as new station structures, transformers, and breakers at the Balls Gap Station.

S&C then commissioned the Balls Gap Station Distributed Energy Storage System’s islanding scheme. This was the first U.S. application of a battery serving radially-fed distribution system loads during periods when they are isolated from the grid (or “islanded”) by a fault that locks out normal service.

After commissioning the islanding scheme, APCO conducted a live islanding test. First, they intentionally opened a switch in the Balls Gap feeder, interrupting

service to approximately 700 customers. This prompted the feeder devices to reconfigure and use the PureWave® Storage Management System to provide power to the island. The battery served these customers for approximately 30 minutes, at which time the system was allowed to return to normal.

America’s First Battery-Based Energy Storage System for Islanding Applications

S&C furnished the necessary project and construction management, engineering, and design services, plus subgrade work and foundations, along with procurement, installation, testing, and commissioning of the energy storage system.