Application of double-layer Ether CAT and optical fiber interlock net in short circuit protection
Application of double-layer Ether CAT and optical fiber interlock net in short circuit protection作者机构：School of Electrical Engineering and Automation Henan Polytechnic University Jiaozuo 454000 China College of Computer Science and Technology Henan Polytechnic University Jiaozuo 454000 China Kaifeng Measurement & Control Technology Co. Ltd. Kaifeng 475000 China
出 版 物：《Journal of Coal Science & Engineering(China)》 (煤炭学报（英文版）)
年 卷 期：2013年第19卷第3期
页 面：402-406页
学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 081203[工学-计算机应用技术] 08[工学] 0835[工学-软件工程] 0812[工学-计算机科学与技术（可授工学、理学学位）]
基 金：the Provincial Key Project of Henan(112102210004) the Open Fund of Control Engineering Discipline of Henan(KG2011-16)
主 题：coal mines relay protection Ethernet optical fibers interlock
摘 要：The selectivity of short circuit protection of high voltage lines in coal mines cannot be realized by existing protection systems. To solve this problem, a scheme based on double layer Ether CAT and optical fiber interlock net was proposed. The system is mainly composed of double layer Ether CAT, optical fiber interlock net, ground monitoring station, underground control stations and integrated protection devices with Ether CAT communication interface and interlock interface. Double layer Ether CAT and optical fiber interlock net cooperate with each other, when one is interrupted, the other net carl realize selectivity of short circuit protection independently, Results of test show that the system can achieve selectivity of short circuit protection reliably, determine the fault location quickly, shorten troubleshooting time and improve safety and reliability of the power network in coal mines.
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