对煤矿井下高低压保护定值整定研究

Study on fixed value setting of high and low voltage protection in coal mine

煤矿企业是耗电量较大的企业。所以,电源是否稳定对煤矿企业设备的稳定运行有着重要影响。如果电源不稳定很可能会引起保护的误动或者是拒动的情况。本文通过对煤矿井下高低压中的选择性漏电保护、三段式电流保护、非电量保护等原理进行相应的说明,并列举具体的整定方法。此外,还通过三段式电流保护实例进行分析说明。

Coal mine enterprise is a large power consumption enterprise. So, whether the power supply is stable hasan important influence on the stable operation of coal mine enterprise equipment, the power instability is likely tocause a malfunction or rejection of the protection. In this paper, the principle of selective leakage protection, threestage current protection, non electric quantity protection and so on are described in detail. In addition, the three stagecurrent protection examples are analyzed.