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针对煤矿井下变压器功率损耗与电力传输过程中线路损耗较大的问题,通过采用无功补偿装置来提高电气设备的有功功率,只有提高了电网的功率因数,减少输电中的功率损耗,利用新技术解决两相短路电流小、灵敏度不够的问题,提高专供供电电压等级才能彻底解决问题。但由于现在使用的鉴幅值的短路保护方法不灵敏,所以采用了相敏保护装置,以提高短路保护的可靠性。提高局部通风机的电压等级,增加了供电距离,提高了专供风机的运行可靠性。
Aiming at the problem of large power loss of transformer and power transmission loss in coal mine, by using reactive power compensation device to improve the active power of electrical equipment, only by improving the power factor of the power grid and reducing the power loss in power transmission, Solve the problem of two-phase short-circuit current, the sensitivity is not enough, to raise the voltage for the supply voltage can be completely solve the problem. However, due to the shortcomings of the short circuit protection methods currently used are not sensitive, so the use of phase sensitive protection device to improve the reliability of short circuit protection. Improve the local fan voltage levels, increasing the power supply distance, improve the reliability of the fan specifically for the operation.