• DocumentCode
    894672
  • Title

    Application of Abrupt Change Detection in Power Systems Disturbance Analysis and Relay Performance Monitoring

  • Author

    Ukil, Abhisek ; Zivanovic, Rastko

  • Author_Institution
    Tshwane Univ. of Technol., Pretoria
  • Volume
    22
  • Issue
    1
  • fYear
    2007
  • Firstpage
    59
  • Lastpage
    66
  • Abstract
    This paper describes the application of the abrupt change detection technologies to detect the abrupt changes in the signals recorded during disturbances in the electrical power network of South Africa for disturbance analysis and relay performance monitoring. The aim is to estimate the time instants of the changes in the signal model parameters during the prefault condition, after initiation of fault, after the circuit-breaker opening and autoreclosure, etc. After these event-specific segmentations, the synchronization of the different digital fault recorder recordings are done based on the fault inception timings. The synchronized signals are segmented again. This synchronized segmentation is the first step toward automatic disturbance recognition, facilitating further complex feature vector analysis and pattern recognition. Besides, the synchronized, segmented recordings can be directly used to analyze certain kinds of disturbances and monitor the relay performance. This paper presents many practical examples from the power network in South Africa
  • Keywords
    circuit breakers; fault diagnosis; power distribution faults; power system measurement; power transmission faults; relay protection; abrupt change detection technologies; automatic disturbance recognition; circuit breakers; digital fault recorder; disturbance analysis; electrical power networks; fault inception timings; feature vector analysis; pattern recognition; power system disturbance analysis; relay performance monitoring; signal model parameters; signal recording; Africa; Circuit faults; Digital recording; Digital relays; Monitoring; Pattern recognition; Performance analysis; Power system analysis computing; Power system relaying; Signal analysis; Abrupt change detection; disturbance analysis; relay performance; wavelet transform (WT);
  • fLanguage
    English
  • Journal_Title
    Power Delivery, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0885-8977
  • Type

    jour

  • DOI
    10.1109/TPWRD.2006.887096
  • Filename
    4039487