Statistical evaluation of voltage unbalance in residential distribution networks with a high penetration level of small wind turbines

Chao Long, Mohamed E.A. Farrag, Donald M. Hepburn, Chengke Zhou

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

Abstract

Voltage unbalance (VU) in residential distribution networks (RDNs) is mainly caused by the load unbalance in three phases, resulting from network configuration and time variation of the loads. The increasing penetration of small wind turbines (SWTs) and their non-uniform distribution over the three phases have introduced difficulties in evaluating possible VU. In this paper, the point estimate method (PEM) is applied to evaluate the possible VU in RDNs with different SWT penetration and distribution scenarios. Randomness of load switching by customers and time-variation of wind speeds have been taken into account. The methodology has been applied to a generic UK distribution network. Results show that a balanced penetration of SWTs over three phases reduces the VU of a RDN. A scenario where 40% of homes in one phase have SWTs installed would result in a voltage unbalance factor (VUF) out of UK statutory limits.

Original languageEnglish
Title of host publication2nd IET Renewable Power Generation Conference (RPG 2013)
Publisher Institution of Engineering and Technology (IET)
Edition623 CP
ISBN (Print)9781849197588
DOIs
Publication statusPublished - 2013
Event2nd IET Renewable Power Generation Conference - Beijing, China
Duration: 9 Sep 201311 Sep 2013
Conference number: 2

Publication series

NameIET Conference Publications
Number623 CP
Volume2013

Conference

Conference2nd IET Renewable Power Generation Conference
Abbreviated titleRPG 2013
Country/TerritoryChina
CityBeijing
Period9/09/1311/09/13

Keywords

  • Distribution system
  • Point estimate method
  • Probability distribution
  • Small wind turbines
  • Voltage unbalance

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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