基于暂态行波法的低压舰船电网选线方法

对电力系统单相接地故障网络及其零序等效网络进行了数值分析，同时运用Matlab对电力系统单相接地故障线路进行了仿真研究。在深入了解舰船电力系统接地故障的基础上，针对舰船电网的特殊环境以及现有接地故障选线技术，对比了陆地接地故障选线的现有技术，将行波法运用于舰船电力系统的单相接地故障选线，并与传统的选线方法相比。结果表明，行波法具有灵敏度高、选线迅速等特点，更有利于舰船电力系统的继电保护。

Faulty Line Selection in Low Voltage Shipboard Power System Based on Transient Travelling Wave

In this paper,the power system single phase earth faulty network and its zero-sequence equivalent network were analyzed numerically and single phase earth faulty line selection of the power system was simulated using Matlab. On the basis of in-depth understanding and investigation of shipboard power system earth faulty, the wavelet analysis method was applied in single phase earth faulty line selection of shipboard power system. Considering the special ship grid environment and the existing ground fauhy line selection technology, combining with the terrestrial ground fault line selection in the same time, compared with the traditional faulty line selection, the travelling wave method has the characteristics of higher sensitivity and speedy selecting, which is more conducive to the shipboard power system relay protection.