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  • Future of Energy
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The Enhanced Frequency Control Capability (EFCC) Project

Please note: Given the challenges posed by COVID-19 we will be constantly reviewing our plans and several projects may be impacted. Click here to find out more.

National Grid Electricity System Operator (NGESO) teamed up with industry and academia to find new ways to stabilise the Great Britain’s (GB) electricity transmission system as the nation’s energy becomes greener.

The EFCC project completed on 30 April 2019. For full information on the project, please refer to the project's closing down report 

This website is now for historic information only and is not being monitored. If you have questions about the project, contact Lilian Macleod

  • [email protected]

Traditional, large rotating power generators provide lots of inertia (the resistance of an object to any change in motion) which acts as a natural aid in maintaining frequency stability. Renewable energy technologies introduce challenges to system stability as they do not provide inertia, meaning they cannot help maintain system frequency. The increased risk of rapid changes to frequency could lead to faults on the electricity network. As a result, we'll require a greater volume and speed of frequency response to keep the system stable.

NGESO has found that as more renewable sources are connected to the system and larger, inertia-rich, generators such as coal-fired power stations are replaced, maintaining the frequency response at 50 Hz – a license requirement – will become more challenging. New significantly faster frequency, coordinated response solutions utilising renewables, demand side resources, and other technologies need to be developed. The Enhanced Frequency Control Capability (EFCC) project was designed to find a solution to this challenge. Project partners included; GE Renewable Energy (formally known as Alstom Psymetrix), the University of Manchester, the University of Strathclyde, Belectric, Flexitricity, Centrica/EPH, Ørsted (formally known as DONG Energy) and Siemens Gamesa Renewable Energy.

What did we do?

Exploring a future of coordinated, fast frequency responseWhy EFCC?

Exploring a future of coordinated, fast frequency response

NGESO and its project partners developed, tested and demonstrated the first wide-area monitoring and control system (MCS) of its kind in GB. Through trialling the MCS, the project has demonstrated a flexible approach to coordinated, fast frequency response so that a wide range of technologies can participate in managing system frequency including: 

• Solar PV power plants

• Battery storage

• Wind power

• Thermal generation

• Demand Side Response (DSR).

 

The EFCC project has the potential to provide a range of potential opportunities for service providers to fully maximise their assets.  Knowledge and results gained from the project is contributing to a more flexible, secure and fairer approach for all technologies. The project supports NGESO’s Frequency Response Product Roadmap which aims to simplify and improve frequency response and reserve services.

The MCS

What’s unique about the MCS is that it can monitor the electricity grid at a regional level and coordinate regional frequency response from a range of service providers as necessary. This has not been done on the GB electricity transmission system before.

When a variance in frequency occurs on the system, a response needs to be achieved within fractions of a second to be effective. Over the fast timeframes that this frequency response is being calculated and deployed, there is a difference between the frequencies that are seen at the points where these technologies connect. The MCS provides the bridge of information between the different technologies and the System Operator and can deploy the right response from these technologies at the right time to support the stability of the power system.

This provides greater visibility of what is happening on the grid by using real time data. Armed with the coordinated data the MCS can provide, NGESO and industry partners are helping lead the transition to a new energy future, confident that the faster more effective services needed are being delivered optimally and stably. Not only will this help to deliver greater value to energy consumers by running the system more efficiently, it will also evolve and future-proof the grid.

 

Why EFCC?

The EFCC project has demonstrated that; the MCS can detect and respond to frequency events, that the system has the capacity to operate in the required timeframe, and individual partners have been able to demonstrate their abilities to contribute to frequency response using the system. The project’s power system studies have proven the benefit of a coordinated, fast frequency response in low system inertia conditions. The studies demonstrated that providing a coordinated fast frequency response could increase the allowable maximum infeed loss in the system and decrease the system constraints. This learning and the results are crucial and will assist in the future operability of the electricity network.

More information on the project conclusions can be found in the Project’s Completion Report.

 

What next? 

A phased approach to any potential implementation of MCS is needed. This will include a full assessment of the how the MCS will operate on the live electricity system. This will help to increase the technical readiness of the system before any potential roll-out. Consideration will be given to the new commercial framework and IS interfaces with NGESO’s balancing systems to understand the impact and necessary interfaces. This phased approach will ensure the transition of this complex scheme is carefully managed and coordinated aligning to other business strategies.

A phased implementation the MCS will fully assess the impact on business processes and systems, with appropriate stakeholder engagement at each step. The phases and associated activities do not preclude the use of alternative wide-area control schemes which can provide the same functionality as the MCS.

Phases for implementation include:

1. Proposed Network Innovation Allowance (NIA) MCS demonstration

2. Development of an end-to-end MCS demonstration

3. End-to-end MCS demonstration

4. First stage roll-out of the MCS

5. Second stage roll-out of the MCS

More information on the next steps can be found in the Planned Implementation chapter in the Project’s Closure Report 


 

Our project partners

We are running the project in partnership with energy experts and academia. All of our partners have made a significant financial contribution to the project and have provided support in the following ways:

Belectric

Solar power experts Belectric will provide response from their PV power plants and storage facilities. They'll contribute knowledge and practical solutions to realise the project's goals concerning battery- and PV-based frequency regulation, virtual inertia, and collaboration of different response providers.

Centrica/EPH

Multinational utility business Centrica/EPH provided simulation evidence to demonstrate the viability of large scale thermal generation to provide faster frequency response by implementing revised frequency control logic.

Flexitricity

Leaders in demand-side management, Flexitricity are recruiting customers from industrial and commercial sectors for a demand side response (DSR) trial. The company will also deploy its proprietary control and communication solutions, providing local interface points for the MCS on customers' sites, and will monitor and operate the DSR trial.

Ørsted (formerly DONG Energy) and Siemens

Ørsted (formerly DONG Energy) and Siemens are concentrating on wind turbine trials to demonstrate the capability of a wind farm to provide fast, initiated frequency response and the associated costs of doing so. 

GE Renewable Energy (formerly GE Grid Solutions)

GE Renewable Energy (formerly GE Grid Solutions) have developed the monitoring and control system for the project. The company has a strategic interest in the field of wide area measurement and control.

University of Manchester and the University of Strathclyde

Both institutions are providing academic support, testing facilities, system studies and expert knowledge. A big focus for both Strathclyde and Manchester will be on the results validation and sharing learning from the project.

********************

Related documents

Closing Down ReportTechnical ReportsConference ArchiveDissemination events archive6 monthly OFGEM reports archiveOther Documents

Closing Down Report

National Grid ESO | April 2019
The Enhanced Frequency Control Capability (EFCC) project closing down report

Name Sort descending
Closing Down report
1

Technical Reports

Name Sort descending
Alstom - Control Platform Specification Summary
Alstom - Event Detection Report 2015
Belectric Hybrid Simulation Technical Report
Belectric PV + Battery Hybrid Technical Report
Belectric Solar PV Technical Report
Centrica CCTG Technical Report
Flexitricity Demand Side Response Technical Report
GE Grid Solutions - Smart Frequency Control Resource Allocation Allocation Paper - November 2015
GE Grid Solutions Control Platform Specification Summary November 2015
GE Optimisation Detailed Design
UoM - RTDS HiL-testing to assess the MCS Technical Report
UoS - Inertia Response from Wind Technical Report
UoS - Part 1 Local Operational Mode Technical Report
UoS - Part 2 Wide Area Mode Tests Technical Report
UoS - Part 3 Communication Technical Report
UoS Additional Local Area Operational Mode Test Technical Report
Ørsted Wind Technical Report
17

Conference Archive

Name Sort descending
LCNI Conference 2016 Presentation
LCNI Conference Presentation 2017
2

Dissemination events archive

Name Sort descending
Academia Dissemination Event - June 2018 - Full Slide Pack
EFCC Dissemination Event - March 2017 - Slides part 1
EFCC Dissemination Event - March 2017 - Slides part 2
February 2016 Dissemination Event Slides Part 1
February 2016 Dissemination Event Slides Part 2
The EFCC Project event - March 2018 - Belectric slides
The EFCC Project event - March 2018 - Centrica slides
The EFCC Project event - March 2018 - Flexitricity slides
The EFCC Project event - March 2018 - GE Power and National Grid (intro) slides
The EFCC Project event - March 2018 - National Grid Commercial slides
The EFCC Project event - March 2018 - National Grid Communications WP7 slides
The EFCC Project event - March 2018 - Orsted slides
The EFCC Project event - March 2018 - University of Manchester slides WP4
The EFCC Project event - March 2018 - University of Strathclyde
14

6 monthly OFGEM reports archive

Name Sort descending
6 monthly report January - June 2015
6 monthly report January-June 2016
6 monthly report January-June 2017
6 monthly report January-June 2018
6 monthly report July-December 2015
6 monthly report July-December 2016
6 monthly report July-December 2017
7

Other Documents

Name Sort descending
1st May 2019 Final webinar slides
25 September 2018 Commercial Webinar slides
FAQ Document
National Grid's Battery Storage Investigation Report - June 2015
National Grid's Battery Storage Investigation Report - November 2015
Original Enhanced Frequency Control Capability Project Ofgem Bid
Second Ofgem Bid Submission - Enhanced Frequency Control Capability project
Smart Frequency Control - Project Fact Sheet
Wind, battery and solar webinar Q+A - 5th February 2019
Wind, battery and solar webinar slides - 5th February 2019
10
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