Seán Mc Goldrick

Emerging Technology

State Government-owned corporation that builds, maintains and operates electricity network throughout majority of south Western Australia

Governed by an independent Board and reports to Minister for Energy, as owner’s representative

Serving more than one million customers across a network area of 254,920 km2

Customer-orientated organisation that provides a safe, reliable and affordable electricity supply to Western Australians

Provides an essential service through transmission and distribution of electricity across our vast infrastructure of poles, wires, substations and depots

Who we are – Western Power

2

Economics of emerging technologies in WA

Non network solutions make economic sense in edge of grid areas

Large areas of the network cost more to replace/maintain than the revenue collected by Synergy through the retail tariff

Current SWIS model• Central mesh

network • Long transmission

links and branch network radiating from core area

• Fully integrated, sharing generation capacity

Future model with small number of islanded systems

• Bulk of network unchanged

• SPS and islanded micro-grids created at periphery

• Outlying branches disconnected to avoid capital expenditure

Extreme model without centralised network

• Multiple micro-grids / smaller connected systems

Stand alone power systems

(SPS)

Micro-

gridMesh

network

Branch network

Future model with variable network types

• Some SPS and micro-grids in periphery of network

• Thin pipe connections to areas with local generation and storage

Integrated Network Fringe Disconnection Modular Network Fully Decentralised

Possible evolution of WA’s network

The Western Power of the future…

Modular Network Future model with variable network types:

Strongly meshed urban distribution networks;

Some SPS and micro-grids in periphery of network;

Thin pipe connections to areas with local generation and storage;

Micro-grids developing with infill projects; and

Continued relevance of transmission networks in some areas.

Stand alone power systems (SPS)

Micro-grid

Mesh network

Branch network

Emerging Tech projects

Stand-alone Power System

Microgrid Connected [Curtin]

IEG Impact Assessment

Microgrid with scale renewables [Carnegie]

Battery Storage (Reliability Driver)

Pervasive across all network/connection types

Demand Management(Mandurah)

Kalbarri Feasibility

Driver 6. Capex reduction

Driver 5. Customer experience

Driver 3. Build credibility

Driver 5. Customer experience (reliability)

Driver 6. Capex reduction

Driver 4. New value

Driver 3. Build credibility

Driver 1. Forewarned of change

Driver 5. Customer experience

Driver 2. Accelerate projects

Driver 3. Build credibility

Driver 1. Forewarned of change

Driver 6. Capex deferral

Driver 1. Reducing/deferring capital

Driver 3. New revenue (secondary)

Driver 5. Improve reliability

Driver 1. Forewarned of change

Driver 3. Build credibility

Power flow

Critical circuit

LEGEND

Kalbarri’s Microgrid

GERALDTON

New

New

Existing

Existing

Business

Homes

Key assumptions

1. Generation will be over-sized for town’s peak to provide a commercial incentive to private generation.

2. The 33kV line will remain in service as the predominant operating mode (Kalbarri as a day-time generation centre).

3. Battery and energy management system will address (under commercial arrangements with generators) voltage and frequency support for the system.

4. The microgrid is intended to provide reliability of supply comparable to that of Geraldton – ie not a perfect solution.

Technology:

Does it work?

How does it impact reliability?

What does it look like?

How do we operate it?

How do we maintain it?

What is the total lifecycle cost?

Feasibility study to assess

Other:

Commerciality

Regulatory implications

Consumer / Stakeholder implications

Business impact

Project partner impacts

Budget: $300,000

Timeline: September 2016 – feasibility study complete

Major Outage Data (2015)

Incident Date

Device tripCustomers

affected

Outage (initial

restoration, minutes)

Outage (final restoration,

minutes)Cause

17/03/2015 11:13

NK322 1,230 43 43 Unknown

26/03/2015 15:40

K510/8/1 1,276 218 2,894 Lightning

20/07/2015 12:54

NK322 1,231 34 34 Vegetation

4/11/2015 10:57

NK611A/1 1,230 510 521Emergency Outage For Hazard

The yellow in table denotes day time hours and possible solar energy availability (obviously reduced output if storm clouds are present)

Fault Location Map Example

NK322· S461300 pole (bird)· Recloser (bird?)· 1 unknown

K510/8/1· S464659 NK111/40/7 pole,

NK142-NK143, N1274672 NK111/83/5 TX (all storm)

K316/1 (Recl)· K316/20/21/8 TxK316/1 (DOF, Recl bypassed)· DOF rating too low

K202/1 (DOF)· 2 unknown

K102/3 (DOF)· Bird· 1 unknown

GTN 603.0 (CB)· B17668 broken (K98/1)

Kalbarri 6.6kV8210174 (DOF)· 1 unknown2614406 (DOF)· 1 unknown

Emerging Tech projects

Stand-alone Power System

Microgrid Connected [Curtin]

IEG Impact Assessment

Microgrid with scale renewables [Carnegie]

Battery Storage (Reliability Driver)

Pervasive across all network/connection types

Demand Management(Mandurah)

Kalbarri Feasibility

Driver 6. Capex reduction

Driver 5. Customer experience

Driver 3. Build credibility

Driver 5. Customer experience (reliability)

Driver 6. Capex reduction

Driver 4. New value

Driver 3. Build credibility

Driver 1. Forewarned of change

Driver 5. Customer experience

Driver 2. Accelerate projects

Driver 3. Build credibility

Driver 1. Forewarned of change

Driver 6. Capex deferral

Driver 1. Reducing/deferring capital

Driver 3. New revenue (secondary)

Driver 5. Improve reliability

Driver 1. Forewarned of change

Driver 3. Build credibility

CUSP Project – White Gum ValleyARENA-funded micro-grid project with Curtin University Sustainable Policy Institute (CUSP)

44 dwelling microgrid development at White Gum Valley and incorporates 12 private maisonettes, 12 affordable maisonettes, 15 1&2 bed apartments and 5 town houses.

Western Power is contributing at a strategic level via the project steering committee

– Provide in-kind technical support and design services related to connection of the micro-grid to the distribution network.

Western Power aims to build an understanding of the commercial and consumer drivers for micro-grid development and form a view on its potential role in delivery of microgridsin the future.

Project partners: Landcorp, City of Fremantle, the Property Council, UDIA, LGA, MBA and HIA.

Carnegie Wave Energy

MOU signed to trial the first microgrid project in the world that combines wave energy, solar (photovoltaic) energy, a desalination plant and energy storage and connects to a large electricity network.

Assess technical challenges of enabling a two way flow of power between a integrated network and a microgridthat has a mix of renewable sources of generation

Six month engineering secondment to assist with

– interface to the grid

– compliance to the Technical Rules and Network Standards

Stand alone power system pilot

How the participants’ experience compares to being connected to the Western Power network

Changes in reliability for participants

Costs and benefits of SPS compared to maintaining overhead powerlines

Whether SPS are a safe, reliable,and affordable solution for specific customers in rural and regional areas of the Western Power network

Budget: $4.0 M

Timeline: June 2017 – pilot complete

Battery Energy Storage System (BESS) Pilot

Better understanding of market capability of providing new technology

Changes in reliability for participants

The costs and benefits of BESS compared to upgrading overhead powerlines to deal with reliability challenges

Whether BESS are a reliable and affordable solution for providing temporary supply during unplanned outages for regional centres

Budget: $600,000 to gate 3

Timeline: May 2016 – final investment decision

BESS Options Assessment

$30

$32

$34

$36

$38

$40

$42

0% 10% 20% 30% 40%

N

P

C

Mill

ion

s

Reduction in Minutes Interrupted per Customer

Benefits Realisation (NPC Vs Interruption Minutes for Perenjori)

Rebuild OH conductor backbone with OHEW

(TS 611.0 CB zone)

Battery Energy Storage System (BESS)

Rebuild OH conductor backbone with OHEW

(PE1 zone)

Rebuild OH conductor backbone with Hendrix

(PE1 zone)

Replace OH backbone with underground cable

(PE1 zone)

Asset Replacement (i.e. ZBAM for feeder)

Notes:

1. Options 1 to 5 Include a ZBAM component in

2025

2. SSAM benefits are included in NPC

evaluation

3. SSAM benefits for BESS are $0.13M per year

Demand Management – Mandurah / Meadow Springs

Demand forecast to increase at approximately 5.5 MVAper year exceeding available capacity by 2020/21

Fully-funded plan to meet demand through traditionalmeans, Western Power is working with providers of

non-network alternatives to meet peak demand

• Peak shifting• Load reduction• Power factor correction• Energy storage• Distributed generation

5.5MVA of peak load reduction buys one year of investment deferral, saving money that Western Powercan use to support providers of peak capacity

The greater the length and value of the investment deferral, the more Western Power is able to contribute

Budget: $200,000

Timeline: September 2016 investigation complete

Thank you

Any questions?