Critical Clearing Time and Angle for Power Systems Postfault Stability Assessment

Authors

  • Lounis Latiki
    Affiliation

    Laboratoire de Génie Electrique de Bejaia (LGEB), Faculté de Technologie, Université de Bejaia, 06000 Bejaia, Algeria

  • Abdallah Medjdoub
    Affiliation

    Laboratoire de Génie Electrique de Bejaia (LGEB), Faculté de Technologie, Université de Bejaia, 06000 Bejaia, Algeria

  • Nabil Taib
    Affiliation

    Laboratoire de Technologie Industrielle et de l'Information (LTII), Faculté de Technologie, Université de Bejaia, 06000 Bejaia, Algeria

https://doi.org/10.3311/PPee.19858

Abstract

Transient stability analysis is a very important tool to deal with many behaviors of electrical power systems during and after being subjected to various disturbances. this paper propose a method for electrical power systems transient stability assessment using phase plane trajectories. A methodology for computing the critical stability conditions of generators is proposed. The critical conditions such as critical clearing time (CCT) and critical clearing angle (CCA) were obtained. The computation of CCA and CCT is curried out step by step using the characteristics of the faulted and postfault trajectories from given initial conditions until their intersection point. The angle and time values founded represent, by definition, the critical conditions of the system. The proposed algorithm can be used for complex models since it is based on solving systems of differential equations by iterative methods in the phase plane. The advantage provided by this method is it's accurate and small time consuming. To demonstrate the effectiveness of the proposed method, first, critical conditions calculation procedures are given, then the process used in judging power system stability is provided, finally, simulation results for various test cases of a single machine infinite bus (SMIB) system highlight the proposed methodology.

Keywords:

transient stability, phase plane analysis, modified euler's mehod, critical clearing time, critical clearing angle

Published Online

2022-07-15

How to Cite

Latiki, L., Medjdoub, A., Taib, N. “Critical Clearing Time and Angle for Power Systems Postfault Stability Assessment”, Periodica Polytechnica Electrical Engineering and Computer Science, 66(3), pp. 277–285, 2022. https://doi.org/10.3311/PPee.19858

Issue

Section

Articles