时域反演算法在配电网故障定位的建模和仿真

分布式电源接入等因素限制传统故障定位方法在配电网故障定位问题上的应用，定位变得困难，提出了一种基于时域反演新的故障定位方法并对其在配电网的应用进行了探讨。通过对基于时域反演的故障定位方法的原理研究，建立数学模型证明了暂态信号时域反演后在故障点处实现能量聚焦的能力，说明时域反演算法应用配电网的实现过程。选取2种配电网拓扑结构，用Matlab和Simulink进行仿真验证，证明了时域反演算法对故障阻抗不敏感，能实现配电网的故障定位。

Modeling and Simulation of Fault Location with Time Reversal Algorithm in Distribution Network

Distributed generation integration and other factors restrict the application of traditional fault location methods in distribution network fault location， which makes it difficult to locate the fault position. This paper proposes a new fault location method based on time reversal and discusses its application in the distribution network. By studying the principle of the time reversal based fault location method， a mathematical model is established to prove the ability of transient signal to realize energy focusing at fault point after the time reversal， and the realization process of time reversal algorithm applied to the distribution network is illustrated. Two kinds of distribution network topology are selected and simulated with MATLAB and Simulink. The results show that the time reversal algorithm is insensitive to fault impedance and can realize the fault location in the distribution network.