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REFERENCE PROJECT
SSEN - Orkney

Thermal and Voltage Constraint Management

Constraint Manager

Core

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Project  Title : Orkney

Connecting DERs to SCADA / ANM
Thermal Constraint Management
Level 2 (on island) Deployment
Hybrid Architecture
Basis for Energy Trading System
Main System Functions

ANM - Level 3 / SCADA

ANM - Level 1 Controller

DER- Windfarm

User Case : DER Management (Hybrid Architecture)

Year : 2020 (upgraded)

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Network Data
 
Generators - 64
Busbars - 149

Circuits - 141
Circuit Breakers - 129
Transformers - 29

 

Project Statistics

 1 GSP   (11 to 33kV) 

Max Demand = 120MVA (Typically)

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Notable Features

Primary Benefits

Primary Project Features

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Hybrid deployment - Level 2 Controller on Orkney and supervisory control at Level 3 in Perth (mainland).

Very high number of DERs on island

Tidal Wave Generator

Thermal Constraint management only

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Primary System Benefits

Increased connections

Reduced thermal violations

Improved management of violations on link to the mainland

Energy Market

Transmission

Distribution

DER

Consumer

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Level 4 - Enterprise

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Level 3 - Control Centre

Level 2 - Substation

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SCADA

ANM

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Level 1 - Field

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L1

DER 

L-1

DER 

ANM

RTU

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Modules Included in the Project

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Main Functionality :

Thermal Constraint Manager
 

This module monitors for thermal and voltage violations in realtime. On detection of one or more network violations, DERs contributing to the violations are curtailed in order to resolve the problem. DERs can be constrained based upon user-defined Principles of Access (POAs). The ANM module can respond to both demand-led and generation-lead constraints, and as such will respond appropriately to all types of DERs, including energy storage.

Project Process Flow

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Thermal and Voltage

DER

SCADA / DMS System

Realtime

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