Testing of the Enhanced Frequency Control Capability (EFCC) Scheme: Part 1 - Local Operational Mode

Research output: Book/ReportCommissioned report


This report presents the methods and results relating to tests conducted at the Power Network Demonstration Centre (PNDC) at the University of Strathclyde (UoS) for validating the Enhanced Frequency Control Capability (EFCC) scheme. This work is part of the EFCC project led by National Grid under Ofgem’s Network Innovation Competition (NIC) funding framework. The EFCC scheme has two main operational modes: wide-area mode, used when wide-area communication links are available and with sufficiently good quality; local mode, when the wide-area communication links are lost or have relatively poor quality. The Local Controller (LC) within the scheme can also be intentionally set to operate in local mode if required. The test activities at the PNDC have been conducted in two main stages, corresponding to the two operational modes mentioned earlier. The first stage is focused on testing the local mode, while the second stage concentrates on testing the wide-area operational mode using a Power-Hardware-in-the-Loop (P-HiL) test setup, which was established and configured specifically for the EFCC testing regime. For the wide-area mode tests, the impact of communication performance on the EFCC scheme's operation was also evaluated. Therefore, the final test report contains three main parts, i.e. local mode tests, wide-area mode tests (with ideal communication network conditions), and communication impact tests. This document constitutes the first part of the overall final test report and presents the results from the first stage of tests concerned with evaluating EFCC performance when operating in local mode. In this mode, the LC does not have access to wide-area measurement signals (or it neglects those signals if the controller has been intentionally set to operate in local mode). Test results for the EFCC system’s performance in wide-area mode and the impact of communication performance on EFCC will be reported in separate documents.
Original languageEnglish
Place of PublicationGlasgow
PublisherUniversity of Strathclyde
Commissioning bodyNational Grid
Number of pages100
Publication statusPublished - 25 Jul 2018


  • enhanced frequency control capability
  • local operational mode
  • National Grid
  • network innovation


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