树型配电网相间短路的验证法故障诊断

Verification Method of Fault Diagnosis for S.C.between Two Phases on the Distribution Systems with Tree Structure

根据分布参数电路理论，先对树型配电网的某一分支建立其短路故障诊断方程，对于树型配电网则采用故障检测信号由起端逐段传递、短路点逐段搜索和可达端口电压有效值验证方法，一并完成树型配电网相间短路的分支识别和短路点定距，此方法的特点是将故障的分支识别和短路点定距溶为一体。大量故障诊断的计算机模拟和于仿真线上的实验表明，该方法有效。

The diagnosis equation of S. C. between two phases for one branch on tree distribution is derived according to the theory of distributed parameter circuit. By the way of fault detection signal transmitted sectionally, searching fault section by section and verifying efficient value of voltage at measurable ports, not only branch identification but also fault location is completed with one action. It's the character of the method that branch identification as well as fault location is completed at one action. A lot of simulation by computer and on fault model simulation lines shows satisfactory results.