矿井高压电网单相接地“电流限值”的探讨  

DISCUSSION OF "CURRENT LIMIT VALUE" OF SINGLE-PHASE EARTHING IN MINE 6(10)kV NETWORK

作　　者：李润先[1] 

机构地区：[1]北京煤炭设计研究院

出　　处：《煤矿机电》1990年第5期26-33,共8页Colliery Mechanical & Electrical Technology

摘　　要：本文就接触电压值、电网过电压及接地保护装置类型对接地电流限值的影响等确定“电流限值”的因素作了深入分析探讨。然后,对供电网单相接地电流限值如何确定作了多方面的引证,结合我国矿井6kv电网现状提出了意见:煤矿6kV电网单相接地“电流限值”以10～15A为宜,以此作为电网补偿与否的分界点。The paper analyses in detail the factor in determining the 'Current Limit Value' with regard to the contact voltage, over voltage in network and the type of earthing protection device affecting the limit of earthing current. Inferences are drawn in various aspects as how to ascertain the limit walue of single-phase earthing current in power supply network. The writer gives opinion to the present condition of 6kV power supply network, and deems that it is preferable to take current limit at 10-15A as a critical point whether compensation is made in power supply network.

关 键 词：矿井 电网 高压 接地 电流 限值 

分 类 号：TD611.1[矿业工程—矿山机电]