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针对煤矿井下供电系统存在的越级跳闸问题,提出了一种新型的区域选择性联锁保护方案。该方案在现有的矿用开关上装一个智能控制模块,该智能控制模块与现有的保护装置的速断保护配合工作,实现了区域选择性联锁保护功能。试验结果表明,该方案成本低、可靠性高、安装方便,具有一定的实用性。
Aiming at the problem of over-level trip in underground power supply system of coal mine, a new type of selective interlocking protection scheme is proposed. The program installs an intelligent control module on the existing mine switch, and the intelligent control module cooperates with the instantaneous protection of the existing protection device to realize the selective interlock protection function of the area. The test results show that the scheme has the advantages of low cost, high reliability, convenient installation and practicality.