基于以太网的煤矿井下电网防越级跳闸研究  

Study on Override Trip Prevention for Underground Coal Mine Power Grid Based on Ethernet

作　　者：许丹[1] 郭益督 

机构地区：[1]河南理工大学电气学院,河南焦作454000 [2]国家电网驻马店供电公司,河南驻马店463000

出　　处：《煤炭工程》2014年第10期196-197,201,共3页Coal Engineering

基　　金：河南省控制工程重点学科开放基金(KG2011-16);河南省重点公关项目(112102210004);河南理工大学青年基金(Q2010-50)

摘　　要：针对目前煤矿井下供电系统防越级跳闸方案存在难以满足速动性要求的问题,文章提出了一种基于交换式以太网的防越级跳闸方案。分析了保护系统的工作原理,设计了一套智能联锁装置,通过收发连锁信号对各级保护设置不同的闭锁时间而实现保护的选择性,最后对以太网进行实时性仿真实验,验证了网络的稳定性、可靠性和实时性。仿真结果表明:该方案可有效地防止越级跳闸事故发生,确保煤矿井下供电系统安全运行。Aiming at the current condition that, the override trip prevention schemes for power grid of underground coal mine failed to satisfy the requirement of quick - action, a prevention scheme for override trip was proposed based on switched Ethernet. The paper analyzed the working principle of the prevention system, designed a set of intelligent interlocking device, achieved selective protection by sending and receiving interlocking signal to set different blocking time at various levels, and validated the stability, reliability and real - time of the Ethernet. The simulation results show that the scheme can prevent override trip accidents effectively, ensuring safe operation of power system in underground coal mine.

关 键 词：交换式以太网 煤矿供电系统 越级跳闸 实时性 

分 类 号：TD608[矿业工程—矿山机电]