Early Prediction of Transient Voltage Sags caused by Rotor Swings

Johannes Tilman Gabriel Weckesser, Hjörtur Jóhannsson, Thierry Van Cutsem

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Abstract

The paper investigates various methods to predict voltage sags at load buses caused by large generator rotor swings and following a transient disturbance. Three different prediction methods are proposed, which all use real-time measurements from PMUs. One of the methods uses a slightly extended version of the E-SIME method. The other two methods use Measurements and process them by recursive least square estimation. It is shown that the prediction method employing E-SIME allows the earliest detection of a critical voltage sag with satisfactory accuracy.
Original languageEnglish
Title of host publicationProceedings of the 2014 IEEE PES General Meeting
Number of pages5
PublisherIEEE
Publication date2014
Publication statusPublished - 2014
Event2014 IEEE PES General Meeting - National Harbor, Washington, United States
Duration: 27 Jul 201431 Jul 2014

Conference

Conference2014 IEEE PES General Meeting
LocationNational Harbor
CountryUnited States
CityWashington
Period27/07/201431/07/2014

Keywords

  • Power system stability
  • Rotor swings
  • Transient stability
  • Voltage sag prediction

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