基于自振电压比较法的自动重合闸判据仿真

Simulation on Judgment of Autoreclosure Based on Natural Vibration Voltage Comparison

针对目前三相自动重合闸判据模糊和重合过程误动较多的情况,提出了基于线路自振电压比较方法的自适应三相自动重合闸判据。该判据通过对线路断开瞬间由于残余能量衰减而引起的线路自振电压特性的分析,能准确区分瞬时性故障和永久性故障,从而保证了重合闸的正确动作。本文还对各种短路情况进行了仿真分析,进一步说明该判据的准确性。

Judgment of automatic three - phase reclosure based on natural vibration voltage comparison is put forward in this paper, according to the present fuzzy judgment and fault operation in the process of reclosure. The judgment can distinct exactly the suspend fault or permanent fault through analyzing the natural vibration voltage caused by residual energy attenuation and so that it makes sure that the reclosure operates correctly. The simulation analysis of all kinds of short circuits is simulated in this paper and the judgment is demonstrated perfectly.