摘要
本文建立了基于线路分布参数的船舶配电网络高精度故障模型,利用电磁暂态程序EMTP针对一种与波速无关的单相接地故障行波测距方式进行了全面的仿真分析。该方法采用初始行波进行故障测距,消除了波速传播误差,行波特征明显,且不受故障点、对端折反射波的影响,测距结果与中性点接地方式、故障初相角和过渡电阻无关,具有工程实用价值。
This paper presents a high accuracy model of shipboard distribution network based on lines with distributed parameters, simulates and analyzes a fault location method based on initial travelling wave which is unrelated to wave velocity with EMTP. This method uses the initial travelling waves to locate the single-phase earth fault, which eliminates the propagation error in wave velocity and obvious to see the characteristic of travelling wave. What＇s more, it can avoid the influence of the reflected and refraction wave from opposite terminal. It also has nothing to do with different neutral grounding modes, fault initial angle or transition resistor. Therefore it has great practical value in engineering.
出处
《船电技术》
2015年第3期19-22,共4页
Marine Electric & Electronic Engineering
关键词
波速
配电网络
接地故障
电流行波
测距
wave velocity
distribution network
earth fault
travelling wave
fault location
