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Monitoring the Voltage Stability Margin Using Norton Current Distribution Relationship

  • School of Electrical Engineering and Automation, Harbin Institute of Technology
  • The University of Hong Kong

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The impedance matching condition has been a fundamental assumption of many existing studies on voltage stability assessment. In this paper, it has been proven that the Norton current distribution law is equivalent to the impedance matching condition. Based on this law, a new voltage stability index is proposed, which can be further divided into bus voltage stability index and line voltage stability index. These indexes of the focused load bus can be calculated by phasor measurement units data. Then, the voltage stability margin can be assessed by computing the difference between the index value and 1. The effectiveness of the proposed on-line voltage stability index are verified from simulation results perform in a 10-bus system and 39-bus system. Moreover, practical operating constraints such as the generator power limits are taken into account for practical assessment of the proposed method.

Original languageEnglish
Title of host publication2018 IEEE Power and Energy Society General Meeting, PESGM 2018
PublisherIEEE Computer Society
ISBN (Electronic)9781538677032
DOIs
StatePublished - 21 Dec 2018
Externally publishedYes
Event2018 IEEE Power and Energy Society General Meeting, PESGM 2018 - Portland, United States
Duration: 5 Aug 201810 Aug 2018

Publication series

NameIEEE Power and Energy Society General Meeting
Volume2018-August
ISSN (Print)1944-9925
ISSN (Electronic)1944-9933

Conference

Conference2018 IEEE Power and Energy Society General Meeting, PESGM 2018
Country/TerritoryUnited States
CityPortland
Period5/08/1810/08/18

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 7 - Affordable and Clean Energy
    SDG 7 Affordable and Clean Energy

Keywords

  • Impedance matching condition
  • Norton current distribution law
  • Phasor measurement units
  • Voltage stability index
  • Voltage stability margin

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