基于参数识别的井下漏电线路选判方法研究

Research on Selection Method of Underground Electric Leakage Line Based on Parameter Identification

煤矿井下漏电故障严重影响着煤炭生产的安全性和稳定性,针对这一问题,首先分析井下电网的组成结构和常用漏电防护措施,然后建立矿井电网系统典型漏电故障的分析模型和方程,并结合最小二乘法研究了漏电线路选判参数的估计方法,在此基础上,提出了漏电线路的选判依据,以及漏电防护系统的硬件结构和功能。研究成果对煤矿井下漏电线路的识别和维护具有积极参考意义。

The underground electric leakage in coal mines seriously affects the coal production safety and stability.In order to solve this problem,the structure of underground power grid and common leakage protection measures were firstly analyzed,and then the analysis model and equation of typical leakage fault of mine power system was established.In addition,the estimation method for the leakage line judging parameters was studied with least squares,based on which,the selection of leakage line,the hardware structure as well as the function of leakage protection system were put forward.The research results have positive value for the identification and maintenance of underground leakage line.