Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Bifurcations in Voltage Stability Analysis

바이퍼케이션 이론을 이용한 전압안정도 해석

  • Lee, Sang-Ho (School of Electrical Engineering, Seoul National University) ;
  • Cho, Hong-Shik (School of Electrical Engineering, Seoul National University) ;
  • Sohn, Kwang-Myoung (School of Electrical Engineering, Seoul National University) ;
  • Park, Jong-Keun (School of Electrical Engineering, Seoul National University) ;
  • Lee, Byoung-Ha (Dept. of Electrical Engineering, Inchon University)
  • Published : 1996.07.22
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Abstract

Hopf and saddle-node bifurcation have been recognized as some of the reasons for voltage stability problems in a variety of power system models. Local bifurcations are detected by monitoring the eigenvalues of the current operating point. Therefore, many papers have used the methods using the eigenvalues. However, this paper discusses the bifurcations without calculating the eigenvalues as the system parameters vary In the 3 node system. Instead of calculating the eigenvalues, we use directly the coefficients of characteristic equation of Jacobian matrix. Also, the coefficients are used as stability index.

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