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本文基于分布参数电路理论，提出了树状配电线路相间短路的多端激励法故障诊断新算法，根据不同激励下的故障值不变原理，实现树状电网的故障分支识别、故障点定位和过渡电阻定值。仿真试验表明，方法有效。
Based on the theory of distributed parameter circuit, this paper proposes a new multi-terminal excitation fault diagnosis algorithm of tree-shaped distribution line phase short circuit. According to the principle of constant value of fault under different excitation, the fault branch identification, fault location and transition Resistance setting. Simulation results show that the method is effective.