摘要
煤矿井下供电系统存在供电距离短、延伸级数多的特点,短路保护难以整定,越级跳闸的现象时有发生,传统意义上的光纤纵差保护难以解决。结合煤矿井下供电保护技术的现状,分析了造成矿井供电越级跳闸的主要原因,对煤矿系统领域常见的"防越级跳闸"原理进行了阐述,并针对近几年矿井防越级跳闸技术的推广及应用情况,对目前市场多种防越级跳闸的技术特点和性能进行对比分析,提出了防越级跳闸系统建立应注意的问题。
Coal mine power supply system have the features that power distances are short,extended series are more,short circuit protections are difficult to adjust,the phenomenon of override trip happen occasionally,and the optical fiber differential protection in the traditional sense is difficult to solve.Combines with the status quo of coal mine power supply protection technology,analyzes the main reason of override trip,expounds the principles of com-mon “Anti-override trip”in coal mining system area.Aiming at the promotion and application of mine anti-over-ride trip technology in recent years,contrastively analyzes the technical features and the performance of a variety of anti-override trip in the current market.Proposes the matters needing attention of anti -override trip system con-struction.
出处
《山西焦煤科技》
2014年第2期51-53,56,共4页
Shanxi Coking Coal Science & Technology
关键词
电网监控
防越级跳闸
保护
光纤
Power grid monitoring
Anti-override trip
Defender
Optical fiber
