Dr Yogendra Vashishtha - AusNet Services - Grid Energy Storage System (GESS) for network peak demand...

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Grid Energy Storage System Yogendra Vashishtha, Network Modernisation [email protected] Acknowledgements: Terry Jones, D Jayasuriya, Allan Truman and Luke Koedijk (AusNet Services)

Transcript of Dr Yogendra Vashishtha - AusNet Services - Grid Energy Storage System (GESS) for network peak demand...

Grid Energy Storage System

Yogendra Vashishtha, Network [email protected]

Acknowledgements:

Terry Jones, D Jayasuriya, Allan Truman and Luke Koedijk (AusNet Services)

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Electricity transmission network –

carrying electricity from power stations to

electricity distributors across all of Victoria via

12,800 high voltage towers and approximately

6,500 kilometers of Transmission lines.

Electricity distribution network –

carrying electricity from the high voltage

transmission grid to approximately 620,000

customers across eastern Victoria. This network

spans approximately 46,000 kilometers across

an area of 80,000 square kilometers.

Gas distribution network –transporting gas to approximately 570,000

customers across central and western

Victoria. This network spans approximately

9,400 kilometers across an area of 60,000

square kilometers.

AusNet Services

Demand Management Activities

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Network Support: C&I Demand Management

• Upcoming projects to expand portfolio, enhance dispatch effectiveness and sophistication

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Network Support: Embedded Generation

• Typically 3-5 year arrangement to defer major assets , e.g. new ZSS transformer

• A competitive process as mandated by RIT-D for projects > $5M

• Utilises DMIS funding

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Distributed Generation

• Project management and design of trials such as battery storage at both a residential and substation level and

also the provision of a mobile generation fleet: non network options as per Demand Side Engagement Strategy

• EG connections support and updating of policies and procedures for connection of embedded generation in line

with market developments

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Demand Management Incentive Scheme (DMIS)

AER (Australian energy regulator), in its 2010 period price determination, has incentivised the

DNSPs (‘Distribution Network Service Providers’) to consider DSP to manage network demand.

The DMIS consists of two parts:

Part A-DMIA (‘Demand Management Innovation Allowance’)-allowance for non-tariff

DM program approved under the DMIS.

Part B- Recovery of the forgone revenue directly attributable to the implementation

of DMIS program approved under Part A of the DMIS.

Notes:

• Projects and programs eligible for approval under this DMIS must meet the DMIA criteria

specified

• DMIS is not designed to be the sole or even primary source of funding for the DSP

• Capital expenditure made under the DMIA will not be rolled into RAB at the start of next

regulatory control period

Grid Energy Storage Trial (GESS)

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22kV

Feeder

1MW / 1MWh lithium ion

1MW

Key Functions- Peak Lopping

- Feeder Islanding

- Voltage Regulation

- Phase Balancing

Grid Energy Storage Trial (GESS)

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Grid Energy Storage Trial (GESS) More photos- courtesy ABB Australia

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8Executive Leadership Visit

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• Design involves special features like transformer with

two LV windings to work with the grid and in island

mode.

• The trial anticipates a future in which lower battery

prices and standardised manufacturing of plant

components will reduce the total cost of a system like

GESS.

• GESS is designed to provide additional supply capacity

during high demand periods to offset or defer expensive

network upgrades.

• It improves the quality of power delivery, providing active

and reactive power support and other power quality

functions, when connected to the network.

• During the trial, located in an industrial estate in

Thomastown, the system will connect at 22kV to a local

feeder from Watsonia Zone Substation.

• Should a section of the network become isolated, GESS

can provide power as part of an islanded grid.

GESS Design

Grid Energy storage Trial

Conclusions to date

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- Potentially economically viable -when?

- No emissions

- Potential competitive NEM market participation

- Defer network augmentation

- Improve power quality

- Mobile

Disadvantages

Advantages

- Expensive at the moment

- Asset life?

- Innovative ,complicated technology

- introduced into traditional business

Grid Energy storage System Trial

Results to date

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• 2MW Power from the GESS

• Transition from Grid Connected to Islanded

• Peak Lopping

• Power Factor

• Peak Lopping plus Power Factor

• Voltage Support

• Voltage Support plus Peak Lopping

Grid Energy storage System Trial

Future Trials-Quality of Supply

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• THD

• Negative Sequence Voltages

• Load Balance

• Flicker

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• Fire

• Environmental issues

• Council Permits

• Stakeholder Management (internal / external) & communication plans

• Tariff Metering

• Storage environmental issues (fire, temperature )

• Site Development & Security

• O&M, training

• Commissioning on time

Issues to date