62 煤矿机电 2015年第4期 周晓东,丰胜成,郭志强,杨晋伟.煤矿井下高低压开关整定值计算与分析[].煤矿机电,2015(4):62-65. doi:10.16545/j.cnki.cmet.2015.04.018 煤矿井下高低压开关整定值计算与分析 周晓东,丰胜成,郭志强,杨晋伟 (潞安集团李村煤矿,山西长治046600) 摘要:煤矿供电为一类负荷,供电的可靠稳定对煤矿安全至关重要.目前国家对煤矿开关整定 计算没有统一标准,各个煤矿整定都不尽相同,而按电力系统整定方式整定对煤矿供电又并不适 用.对此根据多年的经验,对井下高低压开关整定值进行了分析计算,所得出的整定值在李村煤矿 应用后满足了矿井的供电要求. 关键词:电流保护;电压保护;漏电保护;非电量保护 中图分类号:TM773 文献标识码:B文章编号:1001-0874(2015)04-0062-04 Calculation and Analysis of High/Low Voltage Switch Setting Value at Underground Mine Zhou Xiaodong Feng Shengcheng Guo Zhigiang Yang Jinwei Licun Mine Lu'an Group Lu'an 046600 China) Abstract:The power supply in coal mine is the first class load.The reliability and stable of the power supply plays an important role for coal mine safety.There is no national standard for the calculation of mine switch setting and the setting calculation is different in each coal mine.However the setting method in power system are not suitable for the coal mine power supply.According to the experience in many years calculates and analyzes the setting value of high/low voltage switch at underground mine then gets the setting value.Applies the value in Licun mine it proves that the method can satisfy the power supply requirements. Keywords:current protection;voltage protection;leakage protection;non-electrical protection 整定值设置不当的情况,导致有时保护出现误动和 0引言 拒动情况,影响到矿井的安全生产.本文从实际应 煤矿井下供电主要由高压隔爆开关、低压馈电 用出发,分析了如何正确计算开关整定值,以供研究 开关、电磁启动器、电缆等组成,由于煤矿环境恶劣, 探讨. 井下开关经常发生短路、过负荷、漏电等故障,因此 1电流保护 《煤矿安全规程》中规定井下开关应装设有短路、过 负荷、漏电保护等,这些保护对矿井安全供电起...