Chris Dalitz CE

8/7/2019 Chris Dalitz CE

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COMMERCIAL-IN-CONFIDENCE

Slide 1

Wind Generation Connection at Country

Energy

Chris Dalitz Senior Consulting Engineer

Network Support Engineering Services Division

Dubbo


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Slide 2

What this Presentation will cover..

An introduction to Country Energy

Small, Medium and Large ScaleWind Generation

The basic connection process.. What do I need for a successful

wind generation project ?

Some comments on the Armidaleprecinct, and related issues.


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Slide 3

Australias largest regional utility

More than 800,000 retail electricity customers

25,000 gas network customers in southern NSW

10,000 water and sewerage customers in Far West

Around 4,500 employees in 146 customer and field servicecentres, eight regional offices and four business centres

A decentralised regional management structure responsive to

local priorities and achieving consistently strong customer

satisfaction levels


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Slide 4

Australias largest electricity network

Eight locally managed

network regions, close to

customers and theircommunities

Network area serves 95 per cent of NewSouth Wales

Around 200,000 kilometres of powerlines,1.4 million poles

Extremes of terrain and climate from

subtropics to alps and plains

Investing almost $4 billion between 20092014 to further strengthen and grow thenetwork

Development of a responsive digitalIntelligent Network to improve reliability,

support the growth of renewable energy andmake energy efficiency simpler forcustomers


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Slide 5

Small, Medium and Large scale Wind

Small Scale Wind 10kW and less

Covered by the NSW Solar BonusScheme and FIT

Low voltage inverter connected

Medium Scale Wind 10kW to 2MW

eg Hampton, Arkell (UTS)

Large Scale Wind Multiple largeTurbines of 2-3 MW each for a total

10MW to 200MW windfarm. eg Capital Wind Farm


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Slide 6

Small Scale Wind 10kW and less

These are eligible for the NSW Solar

Bonus Scheme with its 60c/kWh feed in

Tariff (20c/kWh from 18th Nov.)

Inverter connected at Low Voltage (justlike Solar PV)

Same routine process as Solar PV and

same application forms, all available on

the Country Energy website.

A contact person at Country Energy is

Chris Simon if you have questions.


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Slide 7

Medium Generation - Single Point of Contact

All enquiries for connection of an embedded generator to the

Country Energy Distribution network (LV, 11kV or 22kV) are

directed to the Senior Consulting Engineer at Dubbo.

These enquiries are generally in the range of 100kW to several

MW of generation.

Proponents are encouraged to engage a suitable electrical

consultant early in their project to assist them.

Initial modelling is done using a simple spreadsheet to evaluate

capacity of the existing network to absorb generation.


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Slide 8

Sample Output from EMGEN


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Slide 9

Flowchart Medium Projects

Proponents are provided with theFlowchart at right to explain the connection

process.

The flowchart captures the contestable

nature of connection works that operatesunder the NSW Regulatory framework.

A customer specific Network Connection

Agreement is ultimately signed by both the

Customer and Network Operator.


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Slide 10

Large Scale Wind Projects 10 MW to 200MW

These windfarms require connection to Country Energys Sub-transmissionnetwork ie 66,000 Volt or 132,000 Volt lines or substations, or alternatively theTransGrid network.

To date in Australia, wind prospects close to existing power lines have beendeveloped first to minimise grid connection costs.

At Country Energy, enquiries are handled by Mr Col Hackney & Mr Neville

Cooper.


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Slide 11

The basic connection process.

A preliminary enquiry (by proponent) leads to:

A preliminary response (Country Energy) which leads to:

A network connection application (proponent & consultant) whichincludes detailed network analysis and leads to:

Check analysis by Country Energy, TransGrid/AEMO as reqd.) leadsto:

An offer to connect (involving proponent, Country Energy, legal etc)leads to :

A Network Connection Agreement being signed which then allows:

Connection and commissioning of the generator.


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Slide 12

Network Connection Agreement Contract between proponent and Country Energy

Includes general, technical and financial terms with AEMO,

requirements (Chapter 5 of the National Electricity Rules), technical

standards, communications & control.

Key inclusions connection point - transfer capacity from generator

characteristics and technical standards (Schedule 5.2.5.1 -13) as

basis of registered performance standards

About committed, not notional project (ie depends on plant selection)

Needs full (steady state and dynamic) network studies

Issues include normal and abnormal state capacity connection

point +/- reactive power - generator or network parameters ?


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Slide 13

What do I need for a successful wind

generation project ?

1. A good wind prospect.

2. A Network Connection Agreement with the local

network operator (Country Energy or otherwise).

3. A Power Purchase Agreement (PPA) with a

retailer of your choice (Country Energy or

otherwise).


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Slide 14

The Grid.

Armidale is a major hub ornode in the NEM.

The major substation and

transmission lines belong to

TransGrid.

The Country Energy 66kV

network (shown in brown)

consists of light duty radial lines

of limited capacity.

TransGrid are rebuilding anexisting CE line between Glen

Innes and Inverell.


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Slide 15

The Armidale Precinct and related issues

There are major transmission lines and a substation in the

Armidale area, but these belong to Transgrid.

A Government task force is currently looking at the issue of

Scale Efficient Network Extensions to open up renewable

energy prospects.

The current rules are.

The first proponent bears the cost for new lines and

For existing line capacity, first in then a queue policy

applies with 6 monthly reviews.


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Slide 16

Thankyou ! .any questions ?

Documents

Chris Dalitz CE