Operational ANM Schmes in the UK and America

Operational ANM Schemes

Deployments with UK DNOs and others

UKUKPN – currently rolling out BaU to

Norwich area

SSEPD – new deployment for Isle of

Wight

WPD – further rollout at Bridgewater

NPG – planned for Driffield

NIE – ANM trial for small-scale wind

North America

NREL, Colorado – full-scale test

deployment of ANM

Iberdrola USA – flexible

interconnections for REV

Orkney

Challenge

SSEPD seeking cost effective alternative to grid upgrades to

provide connections for renewable generators: network already at

‘full capacity’. Technical challenge is multiple thermal overloads

on various overhead and subsea cables.

Solution

Non-firm actively managed grid connections for distributed

generation using ANM 100 with an energy storage control

module.

Delivered Benefits

Operational since November 2009

Connected 24 MW of new renewable generation capacity to

33 kV grid previously considered to be full

103% of electricity demand met by renewables in 2013

Estimated saving of at least £30million

The Orkney Isles are located off the

north cost of Scotland and

interconnected to the main UK

transmission system.

Orkney Isles Background Information

• 70 islands with 20 inhabited

• ~1000 sq km and 21,000 inhabitants

• Winter peak demand of 31 MW

• Summer peak demand of 6 MW

• Installed background generation of 46 MW

• Annual average temperature 80C

• Industry mainly agricultural, fishing and tourism

Cambridgeshire

Challenge

Increase grid capacity, reduce time to connect and cost

of connection for distributed generation in

Cambridgeshire. Technical challenges include thermal

overloads and localised voltage rise constraints.

Solution

Non-firm actively managed grid connections for distributed generation using ANM 100.

Integration with Dynamic Line Rating relays and Quad Booster Control System.

Delivered Benefits

• 9 generators (39 MW) accepted ANM connection offers out of the 24 connection offers made

• Reduction of CAPEX in connection offers of 75-95% to individual generators

• Aggregate saving of £23.9m.EPN licence area heat map for DG

connections

Cambridgeshire ANM area Norwich ANM

area launched

Dec 2014

following

success of

Cambridgeshire

Cambridgeshire

High level schematic of Cambridgeshire solutionConnection costs and estimated curtailment levels for

normal connection versus ANM connection

Skegness and Corby

Challenge

Roll-out ANM connections for DG customers within 6 months.

Technical challenges include thermal and voltage constraints

for wind and PV developments.

Solution

• Non-firm actively managed grid connections for distributed

generation using ANM 100.

• ANM 100 delivered and operational within 3 months.

• Consultancy services, capacity analysis and training to

build internal knowledge and capability.

Delivered Benefits

• Skegness: 5 offers accepted totalling 49 MW, further 14

offers issued totalling 45.5 MW.

• Corby: 2 offers accepted totalling 58 MW, further 7 offers

issued totalling 80 MW.

SGS and WPD engineers commissioning the

Skegness ANM system

London

ChallengeDemonstrate how ANM can be used to increase visibility of

distributed generation, improve security of supply, manage

different Distributed Energy Resources and avoid demand

driven reinforcement.

Solution

• ANM 100 configured to second by second manage

export and import of distributed generation (20+ MWs

from CHP), demand aggregators (3 aggregators) and EV

charging (50 charge points totaling 600 kW).

Delivered Benefits

• A third more distributed energy plants to export power to

urban networks

• £43m of savings identified through the visibility and

contribution of Distributed Generation to security of

supply. Example trace of ANM delivering autonomous demand response

Shetland Isles

Challenge

Develop and manage the non-interconnected island grid

more efficiently and increase role of renewable energy in

meeting future energy needs.

Technical challenge includes stability, primary reserve,

network operation and thermal overload constraints.

Solution

• Actively manage new generator output against dynamic

stability constraints and schedule new controllable

demand to reduce renewables curtailment and enhance

system operation

• Distributed Energy Resources integrated include domestic

demand (including 2 MW of electrical demand and 16

MWh of energy storage); several MW of new renewable

generation and battery energy storage.

Delivered Benefits

• 5 generators accepted ANM connections (8.5MW)

Population ~23,000

Demand 11 – 47 MW

Diesel generation at Lerwick Power Station (50+

MW)

• BUT reaching end of life and requires

replacing

Back-up and frequency response from Sullom

Voe Oil Terminal

• BUT mainly there to serve local load and

cannot be guaranteed for the long term

Platform and

application

components used

to deliver the

Shetland ANM

system

South East of Scotland

Challenge

To increase the speed and cost of connection for DG projects

(e.g. PV, wind and thermal) in the South East of Scotland.

Reduce wasted engineering effort in connection quotations

which are not accepted (currently >90%)

Technical challenges include thermal overloads and voltage.

Solution

ANM-enable grid supply points with ANM 100 to manage

distribution and transmission constraints

Deliver an online capacity analysis tool for distributed

generation customers to screen connections before applying

Status

Customer portal in trial and being rolled out across the area

by April 2015

3 grid supply points ANM-enabled and integrated to existing

communications and SCADA ready for distributed generator

connections

Available Capacity

Limited capacity

No capacity

ANM enabled area

Project area and constrained circuits for distributed generation

connections

OCAT – Launch of Live Pilot

OCAT – Launch of Live Pilot

Max Gen 156MW

Min Demand 11MW 132/33kV

60MVA

132/33kV

60MVA

Sync

Crystal Rig

Wind Farm

62.5 MW

33/11kV

7.5MVA

33/11kV

7.5MVA

5 MW 31 MW

Aikengall

Wind Farm

48 MW33/11kV33/11kV

(open 11kV switchboard)

Inter-trip at 90% GSP

transformer rating

c

9 MW

Wind Farm

Torness Primary

Dunbar GSP

33/11kV

7.5MVA

Spott Rd Primary

East Linton/North Berwick Belhaven Forth/North

Berwick

Constraint 1

Constraint 257.97MVA

Traditional Solution

• Two Additional 90MVA

Transformers

• Time to Build - 7 years

• Cost - £20M

Smart Solution

• Installation of Active Network

Management

• Time to Build – 6 month

• Cost - £0.5M

• Constrained 3-5% of time

3 New Generators - 51MW

Facilitation of 50MW At Dunbar GSP

13

~1.3km

Traditional Solution

• 1.3km of new wood pole

overhead line

• Cost - £160k

Smart Solution

• Installation of Active

Network Management

• Cost - £12kVoltage limitationMaximum export 12kVA

SMA Cluster Controller

i5MT Transducer ANM Controller

11kV Circuit

PV (0-80kW)

Secondary

Transformer

Grain Store

Demand (0 -250kW)

Metering Point

G59 Relay

MODBUS

Hardwired Digital I/O

Developers Scope

New Connection – 80kW PV Ruchlaw