School of Mechanical Electronic and Information Engineering, China University of Mining and Technology-Beijing

针对矿用照明供电系统发生远距离短路故障时无法精准有效地检测难题,提出了一种检测不同位置多点电流信号保护方法。该方法将煤矿照明保护线路划分为多个区块,在不同区块发生不同故障时线路的电压与电流的大小会随之发生不同变化,以此为依据可以判断出故障类型和短路点具体在那一区块,做出相应的保护措施。此种保护方法相比传统照明信号综合保护装置的短路检测方法其精确度得到很大提高,并且不受供电距离的影响,可以对短路故障定位故障发生的区块和故障分类,同时根据实际情况搭建出照明供电系统仿真模型,验证了上述方法的可行性。

As the long-distance short-circuit faults cannot be accurately and effectively detected in the mine lighting power supply system, we proposed a short-circuit protection method by detecting multi-point current signals at different locations. In this method, the lighting protection circuit is divided into multiple blocks, and the magnitude and phase of the voltage and current will change when different faults occur in different blocks. Based on this, the fault type and the specific location of the short circuit point in a certain block can be determined, and corresponding protection measures can be taken. Compared with the short-circuit detection method of traditional lighting signal comprehensive protection devices, this method greatly improves the accuracy without being affected by the power supply distance. It can locate the short-circuit fault block, and identify the fault type. Meanwhile, a simulation model of the lighting power supply system is built according to the actual situation in the mine to verify the feasibility of the proposed method.

国家自然科学基金项目(52074305)

王红磊,卢其威.基于多点电流电压信号的矿用照明供电系统短路保护研究[J].煤炭工程,2024,56(4):85-90.