blueprint for grid modernization

BLUEPRINT FOR GRID MODERNIZATIONMODERNIZATION

Welcome!

NRGi Key Lessons Learned Poul Berthelsen, NRGi

Blueprint for Grid Modernization Varun Nagaraj, Echelon

Q&A

Speakers

Poul Berthelsen has been working in the Utility industry for 7 years --initially and has always been active in the distribution side of theinitially and has always been active in the distribution side of the business, having technical responsibility for the remote reading system. Since 2007 he became responsible for the technical content of the tender procedure and evaluation of bids within NRGitender procedure and evaluation of bids within NRGi.

Varun Nagaraj brings more than 20 years of high tech productVarun Nagaraj brings more than 20 years of high-tech product planning and strategy success and experience to Echelon. Varun was the CEO of NetContinuum (acquired by Barracuda Networks), served as EVP of Marketing and Customer Operations for Ellacoya (acquiredas EVP of Marketing and Customer Operations for Ellacoya (acquired by Arbor Networks), and was VP of Product Management and Marketing at Extreme Networks.

Poul Berthelsen, NRGiKEY LESSONS LEARNED

Who is NRGi

Danish Customer Owned Grid Company

210,000 customers

185 000 meters changed 185,000 meters changed

3,700 Transformers 10kV / 0 4kV10kV / 0.4kV

2,000 solar installations

Smart metering implementation and installation finished 2012installation finished 2012

Low Voltage Network

10/0.4kV

Y

Average – 60 Customers/Transformer (from 1 ‐ >500)

NRGi Solution

• Supplier – Project managementSupplier Project management• meters

f• software

More than Billing

More than Billing

BillingBilling

More than Billing

BillingBilling

HeatHeatHeat Heat WaterWater

More than Billing

BillingBilling

HeatHeatHeat Heat WaterWaterAnalysisAnalysis

More than Billing

BillingBillingAlarmsAlarms


Demand More from Metering!

Max/Min voltage 15 min resolution

BillingBillingAlarmsAlarms

Contract max current Monitor power

factor

15 min resolution Billing 3 month FWD + REW


Current 5 min resolution Voltage

Flow Diff. Temperature MWh Voltage

THD MWh M3

Integration Overview

Integration Overview

Goals & Objectives:• Never visit the meter – investigate more remotely• Never visit the meter – investigate more remotely• Reduce costs of maintaining the grid• Troubleshoot grid health by analyzing meter data

b ll• Do not impact billing

Never Visit the Meter – Solve More Remotely!

Collecting 15 min values and alarms from metersg

Problems are investigated without disturbing load profile data

Example: Under-Voltage Problems Detected

Voltage measured206.35V

Example: Under-Voltage Problems Detected

Voltage measured206.35V

Select the feederSelect the feeder

How We Configured Meters to Troubleshoot

Results Combined with Communication Data

L1L2L3N

Voltage L1 L1 L2 L2 L3 L3g"L1" L1 L1 L2 L2 L3 L3

Voltage "L2" L2 L3 L1 L3 L1 L2

Voltage "L3" L3 L2 L3 L1 L2 L1

Current Measurement

120

80

100

40

60

20

40

L1L2

0L3

One transformer feeder 35 meter installations

ConclusionPrivate garage

Old welding equipmentgenerates peak current

Voltage measured

generates peak current

206.35V

Key Lessons Learned

Use proven technology Best meter on the market Proven software

Communication system is important Success rate >99.9% daily collection (data collected 4 times a day)

Firmware updates should be possible Allows you to add more functionality Focus on integration

Sh ld t d t i it t ft i t ll ti Should not need to visit meters after installation

Implementation and integration is complicated

Varun Nagaraj, Echelon

BLUEPRINT FOR GRID MODERNIZATIONMODERNIZATION

Low Voltage Grid Stress Points

Low Voltage Grid Stress Points

Three main categories of stress: 1. Distribution transformer failures2 Outages & power quality issues impact service to customers2. Outages & power quality issues impact service to customers3. Losses (technical and non‐technical)

Blueprint for Grid Modernization

3. Demand Management

2.2. Service Assurance

1.1. Smart Metering

SmartMetering

Start TransformerProtection

DemandManagement Start

AnywhereyService Quality Assurance

SmartStreet Lighting AssuranceStreet Lighting

RRevenueAssurance

SmartMetering

Start TransformerProtection

DemandResponse Start

AnywhereyService Quality Assurance

SmartStreet Lighting Assurance

R

Street Lighting

RevenueAssurance

DISTRIBUTION TRANSFORMER FAILURES

Fewer than 1% of World’s Transformers Are Monitored Today

The Ageing Transformer Problem

“The average age of transformers is rising worldwide. There is likely to be a significant increase in the numberThere is likely to be a significant increase in the number

of failures by 2020”

The Hartford Steam Boiler Inspection and Insurance Co., 2011

What Could Be Detected?

Substation

Imbalance;

TransformerOutageImbalance;

Overload

g

Door Open?Overheating

What Could Be Detected?

Substation

Imbalance;

TransformerOutage

Benefits of monitoring:I li bilitImbalance;

Overload

g• Improves reliability• Avoids transformer failures and blackouts• Extends useful life of transformers

Door Open?Overheating

• Reduces maintenance costs• Protects public safety

Echelon Solution COSApp

Substation Utility Datacenter

ControlNodes

Monitoring at the TransformerControlNodes

Substation

Nodes

Monitors key failure & safety parameters at distribution

SmartMeters

y y ptransformers:• Load by Phase• Oil Temperature

• Oil Level• Moisture • Oil Temperature

• Winding Temperature • Ambient Temperature

• Door Status• Fan Control

Locally trend, analyze, and communicate to data center

Drop loads: Control relay, de‐activate load points

How it Works

ControlNode

Modbus RS 232Node RS-232

SensorI/O Module

T Air

PT100 Temp sensors

CT CT CT

T Top OilHumidity

Oil Level

T Bottom OilGas Sensors (H2, CO2, …)

Transformer Protection App COSApp


SmartMeters

OUTAGES & POWER QUALITY ISSUES

Outages

P i t ti t th EU €150BPower interruptions cost the EU €150B a year

U.S. outages cost as much as $180B a year

Power Quality

L d b li h EU Losses caused by poor power quality cost the EU €10 billion annually

16% of generation in EU is from renewables

What’s Happening?Over Voltage

Substation

Increasing Frequency

Under VoltageUnder Voltage

FrequencyDrift

Power FactorDegradation

Outages

What’s Happening?Over Voltage

Substation

Increasing Frequency

Under VoltageUnder Voltage

FrequencyDriftBenefits of monitoring:

• Know about outages before customers call• Know about outages before customers call• Meet power quality service obligation to customers • Closely monitor voltage as PVs & renewables are added

kl d l f bl d• Quickly narrow down location of problems to expedite resolution

Power FactorDegradation

Outages



SmartMeters

ControlNodes

Smart Meters

Substation

M it t d PQ t t th tSmartMeters

ControlNodes

• Monitor outages and PQ events at the meter• Voltage sags and swells• Phase loss and outage duration• Out of spec frequency• Out of spec frequency• Out of spec THD

• Monitor meter health at strategic locations

Control Nodes

Substation

ControlNodes

SmartMeters

• Backup battery allows ECNs to communicate during outage• Local intelligence processes PQ events

• Aggregate & filter reports from all attached metersgg g p• Summarize disparate events into intelligent reports• Transmit only the data utilities need to the head end• Avoid “event storms” at head end• Avoid event storms at head‐end

• Map outages & PQ events to LV grid for faster troubleshooting

Outage Detection - How it Works

“Last Gasp” Alarm enabled by Backup BatteryPinpoint location of fault on three levels

Transformer Station

MV/LV Transformer

Switches Switches

ControlNode

Strategic Meters

1

23

Logical Feeder Segments

Strategic Meters representing each segment

“End of Line” Meters for each feeder

Precise Outage Management and Restortion Reporting

Accurately report outage times to regulators:

Notifies utility when each meter is without power & when power is restored Meters keep exact time of interruption & recovery – no over reportage of outage

minutes to regulators P i t i f ti i id d t i l ti Precise outage information is provided to crews in real‐time Information on cold load pick‐ups provided to bring up restored feeder lines

Power Quality Monitoring - How it WorksControlNode

Power Quality Monitoring - How it WorksControlNode

00:01 Voltage sag: Meter #100:01 Voltage sag: Meter #200:01 Voltage sag: Meter #300:01 Voltage sag: Meter #4

15 Voltage sag from 5 meters in 2 minutes

00:01 Voltage sag: Meter #500:02 Voltage sag: Meter #100:02 Voltage sag: Meter #200:02 Voltage sag: Meter #300:02 Voltage sag: Meter #4

ControlNode

00:02 Voltage sag: Meter #500:03 Voltage sag: Meter #100:03 Voltage sag: Meter #200:03 Voltage sag: Meter #300:03 Voltage sag: Meter #400 03 V l M #500:03 Voltage sag: Meter #5

Service Quality Assurance AppCOS


COSApp

SmartMeters

• Combines detailed power quality and outage summaries into one web interfaceone web interface

• Cuts down investigation time into issues that impact consumer’s quality of service

LOSSES

Technical:

6-8% of energy is lost in T&D in advanced countries

10% i i ffi i ld h d th U S 10% gain in efficiency could have saved the U.S. $5.7B in 2006

Non-Technical:

30% theft is common in emerging economies30% theft is common in emerging economies

1-2% loss is common in US = $5M - $20M annually

Types of Losses

Substation

Non‐technicallossoss

Technical loss

Types of Losses

Substation

Non‐technicalloss

Benefits of monitoring:• Proactively measure losses on low voltage grid• Detect unauthorized use fraud and protect revenue oss

Technical lossDetect unauthorized use, fraud, and protect revenue

• Identify sources of above‐average losses to focus grid improvements for better ROI



SmartMeters

ControlNodes

Smart Meters

Substation

• Tamper detection alarms notifies utilities ofSmartMeters

ControlNodes

• Tamper detection alarms notifies utilities of unauthorized access to meter

• Rogowski coil sensors for accuracy even in the presence of strong magnetic fields

Control NodesControl

Substation

Nodes

• Local sensors monitor consumption at the transformer

SmartMeters

Local sensors monitor consumption at the transformer• Near real‐time comparison of energy • Transformer vs. total metered energy from all attached meters yield

possible sources of non‐technical losses p• Account for non‐metered sources such as street lights

• Analysis at the edge saves WAN costs• Customizable algorithms compare usage patterns againstCustomizable algorithms compare usage patterns against

neighbors, similar homes

Revenue Assurance App COSApp

Substation

Utility D t tDatacenter

SmartMeters

UI tracking Losses across vast LV distribution networks:• Aggregate & display summary results from “edge intelligence”

Hi hli ht i ifi t di i l th t d• Highlights significant discrepancies or larger then expected losses down to specific transformers

• Archive historical data for pattern recognition

Today’s Announcement

Echelon Launched COS App Beta Transformer Protection Service Quality Assurance Revenue Assurance

Apps Run on Echelon Energy Control Networking Platform Includes head-end components (UI and App)( ) Local processing distributes real-time intelligence to the edge Improves grid reliability Reduces data deluge at operations center Reduces data deluge at operations center

For more information email [email protected]

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