煤矿下井电缆短路故障限流方法研究_中国煤炭行业知识服务平台

煤矿下井电缆短路故障限流方法研究

Title

Study on Current Limited Method of Electric Cable Short Circuit Fault in Underground Mine
作者

王彦文赵铁英马枫林
单位

中国矿业大学（北京）机电与信息工程学院
摘要

介绍了大容量高速开关FSR的工作原理及结构,论述了将FSR并联在电抗器两端串接于煤矿下井电缆线路中的限流方法。通过分析其动作时序与EMTP/ATP仿真模型,对煤矿供电系统正常及短路时线路电流、电压变化过程进行了深入研究。EMTP/ATP仿真结果表明,采用该方法既可有效限制短路电流水平,又能减小限流电抗器在线路正常工作情况下的能耗损失。
Abstract

The paper introduced the work principle and structure of the high volume and high speed switch FSR and stated a current limited method with FSR parall el to the two ends of the reactor connecting with electric cable line in underground mine.With the analysis on the action time sequence and the EMTP/ATP emulation mo del, a deep study was conducted on the current and voltage variation process when the mine power supply system was in normal operation or in short circuit.The EMT P/ATP emulation results showed that the application of the method could effectively limit the current level of the short circuit and could reduce the energy consumption and lost of the current limited reactor when the circuit was in normal operation.
关键词

大容量高速开关限流电抗器电缆短路EMTP/ATP
KeyWords

high volume;high speed switch;current limited reactor;electric cable short circuit;EMTP/ATP;