基于相序检测的矿井电网过流保护  

Based on Phase Sequence Detection Overcurrent Protection of Mine Power Network

作　　者：呼守信 

机构地区：[1]中国煤炭科工集团太原研究院有限公司,山西太原030006

出　　处：《机电产品开发与创新》2017年第4期124-126,共3页Development & Innovation of Machinery & Electrical Products

摘　　要：论文介绍了煤矿井下供电电网过电流保护系统中相敏保护和负序保护的基本原理,从理论上分析了相序检测在过流保护中的重要性。设计了矿井电网综合保护中相序检测和相序调整的硬件电路,提出了相序检测在软件设计中的实现方法。实验结果表明,该相序检测电路测量准确,动作可靠,调整方便,具有较高的应用价值。This paper narrates the fundamental principle of phase-sensitive and negative-sequence protection in overcurrent protective system in underground LV distribution network, analyzes the importance of phase-sequence detection in the protective system in theory. The hardware circuit of detecting and rectifying phase sequence is designed and the software design method is given. It has been proved by the experiments that this circuit is accurate to detect the phase sequence,reliable to operate the contactors,convenient to adjust the phase se- quence, and is of great applied value in mining industry.

关 键 词：矿井供电电网 相敏保护 负序保护 相序检测 

分 类 号：TP23[自动化与计算机技术—检测技术与自动化装置]