煤矿井下电缆故障快速定位技术研究

Research on Rapid Location Technology of Underground Cable Faults in Coal Mine

针对煤矿井下低压电网故障点的快速定位问题,首先对常见故障类型和原因进行了分析,在分析基础上,详细研究了阻抗法和行波法等故障点粗定位方法的实现原理,以及音频感应法等故障精确定位方法,并对方法的适用范围和存在的问题进行了分析,随后对近年来出现的电网故障定位新技术的原理进行了研究。该研究对煤矿低压电网常见故障的定位和排除具有积极的指导意义。

In order to locate the fault point of low-voltage power grid in coal mine rapidly,this paper first analyzes the types and causes of common faults.The implementation principle of the coarse positioning method such as impedance method and traveling wave method,as well as the fault location method such as audio frequency induction method,are studied in detail.The application range and existing problems of the above method are analyzed.Then the principle of new technology for fault locating of power grid appearing in recent years is studied.The research in this paper has a positive guiding significance for the location and exclusion of common faults in low-voltage grid of coal mines.