井下高压隔爆开关欠电压保护改造方案研究

Study to Scheme for Innovating Undervlotage Protection for High Pressure Explosion-Proof Switch Used in Underground Mine

提出一种井下高压隔爆开关欠电压保护改造的新型方案。对井下高压隔爆开关中的欠电压保护装置设置2～3s的延时,并设置在井下大量的高压线路开关上,当出现各类停电故障并需短时恢复时,能显著减少全面恢复供电的时间。

The paper put forward a new kind of scheme for innovating undervoltage protection for high pressure explosion-proof switch used in underground mine. Undervoltage protection unit for high pressure explosion-proof switch used in underground mine was set 2~3 s delay which was set at switches in high voltage network, when various power cut malfunction appears and instant recovery demanded, the scheme could obviously reduce the time of recovering power overall.