Analysis of Generator Oscillation Characteristics Based on Multiple Synchronized Phasor Measurements

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  • Hashiguchi Takuhei
    Dept. of Electrical Eng., Graduate School of Eng., Osaka University
  • Yoshimoto Masamichi
    Dept. of Electrical Eng., Graduate School of Eng., Osaka University
  • Mitani Yasunori
    Dept. of Electrical, Electronic and Computer Eng., Faculty of Eng., Kyushu Institute of Technology
  • Saeki Osamu
    Dept. of Electrical Eng., Graduate School of Eng., Osaka University
  • Tsuji Kiichiro
    Dept. of Electrical Eng., Graduate School of Eng., Osaka University

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Other Title
  • 多地点同期フェーザ量計測に基づく発電機動揺特性の解析
  • タチテン ドウキ フェーザリョウ ケイソク ニ モトヅク ハツデンキ ドウヨウ トクセイ ノ カイセキ

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Abstract

In recent years, there has been considerable interest in the on-line measurement, such as observation of power system dynamics and evaluation of machine parameters. On-line methods are particularly attractive since the machine’s service need not be interrupted and parameter estimation is performed by processing measurements obtained during the normal operation of the machine. Authors placed PMU (Phasor Measurement Unit) connected to 100V outlets in some Universities in the 60Hz power system and examine oscillation characteristics in power system. PMU is synchronized based on the global positioning system (GPS) and measured data are transmitted via Internet. This paper describes an application of PMU for generator oscillation analysis. The purpose of this paper is to show methods for processing phase difference and to estimate damping coeffcient and natural angular frequency from phase difference at steady state.

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