Fast islanding detection and grid-injected current compensation for distributed generation with synchronous machine

Zilin Li, Daohong Wang, Ka Wing Chan, Jiefeng Hu

Research output: Unpublished conference presentation (presented paper, abstract, poster)Conference presentation (not published in journal/proceeding/book)Academic researchpeer-review

Abstract

Fast islanding detection methods for inverter-based distributed generation such as photovoltaic system have been well investigated. However, fast islanding detection for distributed synchronous generation is more challenging due to the inherent large system inertia. Existing methods based on sharp frequency and/or voltage change due to sudden power imbalance and system impedance may not be able to ensure highly reliable detection, small non-detected zone, and fast detection. Meanwhile, unbalanced load and harmonics caused by the wide application of power converters would cause power quality issues and complicate the detection of islanding because of distorted waveforms. As a result, a compensator consisting of a diode rectifier and a MOSFET inverter is proposed to fast detect the loss of mains while the power quality of the grid interface could be improved. The effectiveness of the proposed approach has been thoroughly investigated and verified by simulations in EMTDC/PSCAD.

Original languageEnglish
DOIs
Publication statusPublished - Nov 2018
Event11th IET International Conference on Advances in Power System Control, Operation and Management, APSCOM 2018 - Hong Kong, China
Duration: 11 Nov 201815 Nov 2018

Conference

Conference11th IET International Conference on Advances in Power System Control, Operation and Management, APSCOM 2018
Country/TerritoryChina
CityHong Kong
Period11/11/1815/11/18

Keywords

  • Distributed generator
  • Harmonic compensation
  • Islanding detection
  • Loss of mains
  • Unbalance load

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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