supporting control room operators in future distributed power

ELECTRA IRP

Minjiang Chen, Victoria Catterson, Mazheruddin Syed,

Stephen McArthur, Graeme Burt

Dept. of Electronic and Electrical Engineering

University of Strathclyde24th November 2016

Supporting Control Room

Operators in Future Distributed

Power Networks

www.ElectraIRP.eu

The research leading to these results has

received funding from the European Union

Seventh Framework Programme (FP7/2007-

2013) under grant agreement n° 609687

2ELECTRA IRP on Smart Grids

Introduction

Future Distributed Power Network Architecture

Frequency Management in Web of Cells

Decision Support Design on Frequency Scenario

Cell Visualization Design Example

Conclusion and Future Work

Agenda


With the rapidly increasing of automation and intelligence, the

control room of the future may look significantly different to the

traditional concept of visualising the network diagram.

The automation and intelligent system will lead to a network more

self-managing and self-healing to reduce the burden on operators.

Decision Support Systems (DSS) is required in power system

control rooms to help operators avoid emergency situations and also

recover systems to the normal operation.

This research considers one particular view of future networks called

the Web of Cells (WoC) proposed by ELECTRA (European Liaison

on Electricity Committed Towards Long-term Research Activity).

Frequency scenario associated with DSS by adopting the WoC

architecture will be presented and visualization of cell will also be

introduced.

Introduction


One vision of the power system beyond2030 is the Web of Cell (WoC) concept.

The key feature of WoC is that each cellis a peer of other cells, with no overallsystem operator to exercise hierarchicalcontrol over cells.

Peer cells will collaborate to efficiently allocate resources, including

power and ancillary services, via tie lines between cells.

An operator will have certain responsibility within the cell such as

maintaining voltage and thermal constraints, responding to

frequency deviations.

Future Distributed Power

Network Architectures

Web of Cell Architecture Example


For frequency event, there are three operation services to manage the

frequency:

1. Frequency Containment Control:

The main responsibility of this service

is to stop the rise or fall of frequency

and to contain it to a pre-defined value.

2. Balance Restoration Control:

Once the frequency deviation has been

contained, it is to restore the frequency

back within the operation limits.

3. Balance Steering Control:

It is to replace the restoration reserves

with the most economically feasible resources.

There are two phases of frequency management within the WoC

architecture: a procurement phase and real-time operation phase.

Frequency Management

in Web of Cells

Frequency Management in the Web of Cells


Two frequency scenarios have been selected for decision support

design

− Single frequency event (focus)

− Two frequency events in close succession

Operators need situational awareness (visualisation of status) and

decision support (at key decision points)

− Each scenario has two decision points

• Planning phase has already produced FCC and BRC plans.

• Scenarios are on real-time operation phase.

Decision Support Design


Single Frequency Event



Frequency Status: normal

DSS: No operator action

required

Situational AwarenessProblem Cell



Frequency status: deviation

detected and it is in own cell,

disturbance magnitude: 7 MW

FCC reports: FCC operational

DSS: No operator action required

Situational Awareness

1. Magnitude of

disturbance

2. Location of the

disturbance

Data Request Problem Cell



Problem Cell

FCC reports: Frequency contained





Problem Cell

BRC reports: frequency will

restore in 1 minute



Reserves: 1MW from

local cell, 2MW from

Cell A, and 4MW from

Cell B

BRC Plan


• Decision point: procure new BRC reserves after a

frequency event


Problem Cell



Problem Cell

1. Time remaining until next planning

phase

2. Available reserves from own and

neighbouring cells (with speed of

respond, price and capacity)

3. Tie-line operation limit

Data Request

DSS

Options for procuring new BRC

Reserves:

1. 7MW from local cell

2. 5MW from local cell and 2MW from Cell A

3. 6MW from Cell B and 1MW from local cell

Recommended action: 7MW from local cell

Op

tion

s


• Decision point: BSC replacement of BRC deployed

reserves


Problem Cell



Problem Cell

1. Available reserves from own

and neighbouring cells (with

speed of respond, price and

capacity)

2. Tie-line operation limit

Data RequestOptions for replacing deployed BRC

Reserves:

1. 7MW from Cell A

2. 3MW from local cell and 4MW from Cell A

3. 6MW from Cell B and 1MW from local cell

Recommended action: 7MW from local Cell A

Op

tion

s

DSS



Neighbour Cell/Far Away Cell

Frequency status: deviation

detected and it is in Cell A,

disturbance magnitude: 7 MW

FCC reports: FCC operational



1. Magnitude of

disturbance

2. Location of the

disturbance

Data Request

FCC Stage:



BRC reports: Committed to provide

2MW to support problem cell to restore

frequency


BRC reports: No operational required


Situational Awareness(Neighbour Cell) Situational Awareness(Far away Cell)

BRC Stage:


Visualisation Example


Explored the features of WoC architecture for future distributed

power network.

Decision support system is required for prioritising information and

decision making, particularly during network events such as

frequency deviation.

Single frequency scenario demonstrates proposed functionality of

control room visualisation and decision support system.

Future work will implement the DSS within the lab with developed

visualisation.

Conclusion & Future Work

supporting control room operators in future distributed power

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