基于站域保护的煤矿井下电网防越级技术研究  

Study on anti grade trip prevention for underground coal mine power grid based on substation-area protection

作　　者：王玉梅[1] 王乐乐[1] 冯红坤 任保轩 

机构地区：[1]河南理工大学电气工程与自动化学院,焦作454000

出　　处：《电子测量技术》2016年第11期36-40,共5页Electronic Measurement Technology

基　　金：河南省科技攻关项目(11210221000)资助

摘　　要：煤矿井下供电系统的防越级主要解决的问题是使离故障点最近的配电点出线跳闸,而各配电点采用单母线接线,使防越级系统成为二级通信网络,结构复杂,难以满足实时性要求。根据站域保护思想,提出了一种站域保护的井下防越级方案,该方案由站域保护装置和监控主机通过实时以太网构成的单级通信网络实现。站域保护装置的功能是采集井下供电系统配电点的电气信息,确定故障出线并上传故障信息;监控主机利用故障矩阵法确定故障线路所在的配电点,并向站域保护装置下发跳闸指令,使离故障点最近的断路器跳闸,而高性能实时以太网的应用,保证了防越级跳闸系统的实时性。实验结果表明,该方案可以使离故障点最近的断路器跳闸,且满足煤矿井下防越级的实时性要求,为解决煤矿井下越级跳闸问题提供了新的方法。The major function of anti grade trip of underground coal mine power supply system is making the distributing point nearest from the fault point trip . However , single‐bus connection is employed among every distributing points which makes the anti grade trip a complicated two‐stage communication network and will hardly meet the real‐time requirement .The underground anti grade trip program is proposed based on the idea of substation‐area protection ,this program is implemented by a single‐stage communication network which is composed of a RT‐Ethernet constituted by substation‐area protection device and monitoring host .The main function of substation‐area protection device includes collecting electric information of distributing points from underground power supply system and confirming malfunction and upload malfunction information .The monitoring host locates the distributing point where the malfunctioning circuit lies by fault matrix method then sends a tripping order to the substation‐area protection device to impel the breaker nearest from the fault point to trip .Meanwhile the real‐time property of the anti grade trip system is guaranteed by the application of high performance RT‐Ethernet .Experimental results show that this program can make the breaker nearest from the fault point trip ,and in the mean time meets the real time requirements of the underground anti grade trip ,thus providing a new solution to the coal mine grade tripping .

关 键 词：站域保护 故障矩阵 实时以太网 防越级跳闸 

分 类 号：TD611[矿业工程—矿山机电]