雁崖煤业供电系统防越级跳闸保护系统的研究与应用

Research and Application of Anti-leapfrog Tripping Protection System for the Power Supply System of Yanya Coal Industry

为解决雁崖煤业供电系统继电保护选择性低、越级跳闸频繁发生问题,通过分析越级跳闸影响因素,从软、硬件两方面设计供电系统的防越级跳闸保护系统。结果表明:在采用保护系统时,系统运行平稳,跳闸故障次数为0,克服了供电系统越级跳闸,将短路故障影响控制在一定范围内。

In order to solve the problems of low selectivity of relay protection and frequent occurrence of leapfrog tripping in the power supply system of Yanya Coal Industry,the anti-leapfrog tripping protection system of the power supply system is designed from both software and hardware by analyzing the influencing factors of leapfrog tripping.The results show that when the protection system is adopted,the system runs smoothly and the number of tripping faults is 0,which overcomes the leapfrog tripping of the power supply system and controls the impact of short circuit faults within a certain range.