Clean Technology Partners (CTP) is an independent

engineering and solutions provider delivering innovative

engineering solutions for solar PV projects. We work

on a wide range of systems from large rooftop systems

to multi-megawatt solar farms.

In partnership with Siemens Australia, CTP has developed

the e-Cube grid connection solution. The complete

solution combines engineering, grid connection studies,

HV switchgear protection, communications, metering

equipment and testing / commissioning services.

This provides a turn-key solution for your small to

medium scale solar farm.

www.clean-tech.com.au I Tel: +61 (3) 9005 7371

e-Cube

The CTP e-Cube provides a “plug and play” grid connection package for Utility Scale Solar Farms. We provide products that help our clients to obtain grid connection without delay and at low cost.

The CTP e-Cube is a turn-key grid protection solution for the Utility Solar Farm sector. It is manufactured and pre-programmed to meet the specific requirements of each of Australia’s NSPs.

e-Cube Features:• Point of disconnection between

solar farm and grid

• Advanced Protection Systems for solar farm and grid

• Remote access1 and SCADA interface2

• Revenue grade metering for solar farm energy and LGC creation

• OPTIONAL - In-built Power Quality Meter – NER R2 ready3

Simple, Easy & Cost Effective

e-Cube Application

1 Only available for e-Cube Advanced and Pro models 2 Only available for e-Cube Pro models 3 Only available for e-Cube Pro models

e-Cube – Utility Grid Connection Solution

Benefits

• Turn-key grid connection solution – reduces grid connection headache

• Combines Switchgear, Metering, SCADA and installation in one package – reduces complexity

• Standardised solution – reduces engineering and project management costs

• Remote access4 – reduces operation cost and safety risk

• High quality equipment and established suppliers give long life and availability of spares

ELECTRICAL SPECIFICATIONS (Applicable for BASIC/ADVANCED/PRO)

CONNECTION VOLTAGE 11kV 22kV

Rated Voltage (kV) 12 24

Rated Frequency (HZ) 50 50

Rated Short-Duration Power- Frequency Withstand Voltage (kV) 28 50

Rated Lightning Impulse - Withstand Voltage (kV) 75 125

Rated short-time: Withstand current for 1.0 sec (kA) 20 16

IAC Classification A FLR 20kA 1s A FLR 16kA 1s

Rated Busbar Current (A) 630 630

Rated CB Current (A) 630 400

Maximum Generator Power (MW)5 10.0 12.5

Rated Operating Sequence O - 0.3 s - CO - 3 min - CO

Number of Breaking Operations6 10,000

Switchgear Type GAS INSULATED (SF6)

Operating Temperature -25°C - +55°C

Standards IEC62271/AS3000/AS61000/AS3100

4 Only available for e-Cube Advanced and Pro models. 5 Indicative generation level only. Derating factors and safety margins have been applied. Other capacities available upon request. 6 At the rated current of the circuit breaker

CTP offers the e-Cube in the following models: Basic / Advanced / Pro

FEATURESBASIC ADVANCED PRO

Circuit Breaker Close Modes of Operation

Local via manualspring charge

Remote/local selector switchLocal via push-button

Remote via web interface

Auxiliary Power Supply 230VAC / 24VDC UPS Battery7

Protection

Type Siemens SIPROTEC 5 Platform – Model: 7SJ82

Communications N/A Ethernet TCP/IP8 Ethernet TCP/IP8

Installation Location LV compartment Secondary Panel Secondary Panel

RTU / HMI No No Yes8

Remote Access No Yes9 Yes

PQM No No Option

Revenue Metering VIC / NSW / QLD / SA compliant revenue metering panel / enclosure

MECHANICAL DETAILSBASIC ADVANCED PRO

Enclosure Type / IP Rating Outdoor rated / IP54 Outdoor rated / IP54 Outdoor rated / IP54

Dimensions ( L x W x H ) 2300 × 1200 × 2400mm3 3060 × 1170 × 2400mm3 3060 × 1170 × 2400mm3

Weight 1000 Kg 1200 Kg 1200 Kg

Separate LV Secondary Panel No Yes Yes

Space for Customer / DNSP equipment

No Yes Yes

Installation Type Concrete Pad10 Concrete Pad10 SKID Mounted

7 Minimum 8-hour autonomy time for e-Cube equipment only. Additional equipment may reduce autonomy time. 8 Modbus RTU, Modbus TCP, DNP3.0 and IEC61850 available upon request. 9 Remote access available with additional software – contact CTP for further information. 10 Concrete pad to be provided by others.

All specifications subject to change without notice. Clean Technology Partners assumes no liability for mistakes or printing errors. For latest information please contact Clean Technology Partners.

www.clean-tech.com.au I Tel: +61 (3) 9005 7371

Power System / Grid Connection Studies

Power System modelling is an inherent part of any grid connection process. Clean Technology Partners has invested heavily in software, knowledge and capability to deliver a solution that couples the engineering design with power system modelling.

This allows Clean Technology Partners to ensure that the performance seen in the power system modelling is achievable in the real-world. This is a very important component of the R2 model validation process and is an integral requirement in connecting to the power system. Clean Technology Partners has technical experts, extensive knowledge of NER/NSP requirements and the latest software packages. Studies are conducted in the following software packages:

Clean Technology Partners utilize advanced Python scripting and automation techniques to ensure the studies can be done effectively and efficiently. Clean Technoloogy Partners understand the need to move quickly in solar development and offer a turn-key grid connection solution saving time and money to allow you to connect and energise your project quicker and at lower cost.

Siemens PSS/e PowerFactorySiemens

PSS Sincal PSCAD SafeGrid

CTP Power System Studies

Steady-state StudiesVoltage AnalysisThermal Loading AalysisVoltage Fluctuation and Trip Studies

Plant Control Analysis Power Factor, voltage control and voltage droop control can be investigated to find the optimum solution for the plant and the network.

Power Quality AnalysisHarmonicsVoltage Flicker Voltage Unbalance

Dynamic StudiesNER Schedule 5.2 StudiesFault Ride-Through AnalysisControl System Performance / Controller Tuning

Short Circuit StudiesNormal and Contingency Scenario AnalysisSCR Analysis

Protection Studies Protection Settings & Co-ordination reports

Arc-Flash Studies Analysis of operator PPE and clearance requirements

Earthing StudiesSubstation & Inverter Station Earthing DesignSolar PV Field Earthing DesignLightning Protection System Design

HV Cable Sizing Analysis of required HV cable sizing based on installation and site conditions.

Established in 2011, CTP has provided engineering services for over 600MW of utility scale solar farms at all stages of the project lifecycle.

CTP’s Engineering Services for Utility Scale PV Projects

Recent Projects

Williamsdale Solar Farm (11.1MWp) – ACTClient: Impact Investment Group Pty Ltd

• EPC and O&M Technical Contract Schedules

• Owner’s and Lender’s (CEFC) Engineering Services

• Technical Support in Defects Liability Period

Dunblane Solar Farm (10.9MWp) – QLDClient: YD Projects

• High voltage electrical system design

• Protection study and settings report

• Earthing study and design

Swan Hill Solar Farm (19MWp) – VIC Client: Australian Solar Group

• Power system analysis and connection studies

Dingo Solar Farm (75MWp) – QLDClient: ESCO Pacific

• Power system analysis and connection studies

Chinchilla Baking Board Solar Farm (19.9MWp) – QLD Client: Impact Investment Group Pty Ltd

• Owner’s Technical Due Diligence (prior to investment decision)

• EPC and O&M Technical Contract Schedules

• Owner’s and Lender’s Engineering Services

Kelsey Creek Solar Farm Proserpine (60.5MWp) – QLDClient: KCSF Consortium

• Feasibility Study & Concept Design

• Grid Connection Application & NTS

• ARENA Bid Submission Management

Dareton Solar Park (3.7MWp) - NSWClient: Apuron GmbH

• Power system & connection studies

• HV Design and Earthing Design

• Protection study & settings report

• e-Cube

• Project Management

Capability Statement

CTP Solar Farm Engineering Services

Pre-Construction Construction Operation

• Feasibility Studies

• Concept Design

• Energy Yield Analysis

• Grid connection applications

• Power system studies

• Technical Due Diligence

• Owner’s/Lender’s Engineer• Detailed Design• Construction & Commissioning

management

• Remote monitoring / fault analysis

• Technical Support

• O&M support services

CTP has proven our ability to overcome a range of technical challenges on behalf of our clients, dismantling project roadblocks in the process. Recent projects include:

www.clean-tech.com.au I Tel: +61 (3) 9005 7371 I enquiries@clean-tech.com.au