Protection challenges in future converter dominated power systems: demonstration through simulation and hardware tests

Ruiqi Li, Campbell Booth, Adam Dysko, Andrew Roscoe, Helge Urdal, Jiebei Zhu

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

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Abstract

A model of a converter source capable of providing a controllable fault response is introduced to analyse the performance of protection in future power system scenarios. Using a reduced power system model of the National Grid transmission system in Great Britain, a comprehensive set of tests of protection performance are performed to verify how protection systems may be impacted by the introduction of converter-interfaced energy sources and infeeds. Converters with a range of different types of fault response are modelled, as grid codes defining converter response to AC system fault are not completely specific at the present time. The simulated data are injected into an actual protection relay through secondary injection equipment and also to a dynamic protection relay model through simulation, and the results are analysed and compared. The initial results show that there can be a degree of negative influence on protection system performance in converter-dominated scenarios where the power system is relatively “weak”, primarily in the form of longer operating times in certain scenarios. The paper concludes with analysis of results and an overview of on-going and future work to broaden the investigations.
Original languageEnglish
Title of host publication International Conference on Renewable Power Generation (RPG 2015)
Number of pages6
DOIs
Publication statusPublished - 18 Oct 2015
EventIET Renewable Power Generation (RPG) - Beijing, China
Duration: 17 Oct 201518 Oct 2015

Conference

ConferenceIET Renewable Power Generation (RPG)
CountryChina
CityBeijing
Period17/10/1518/10/15

Keywords

  • power systems
  • power system protection
  • power electronics
  • renewable power integration
  • system modelling
  • protection testing

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