煤矿低压电网绝缘自检技术

Insulation Self-detection Technology for Coal Mine Low-voltage Power Grid

为了提高煤矿井下IT方式低压电网绝缘性能检测的准确性,通过在硬件方面构建模拟开关和在软件方面增加测试输出和模拟数字反馈的方法,搭建四大模块,包括电源模块、检测模块、模拟控制模块和显示模块,实现绝缘检测设备在工作之前完成自动自检,完成自检后开始系统绝缘检测,通过两级报警功能,提高系统绝缘保护安全性和报警信息的准确性。

In order to improve the accuracy of the insulation performance detection of the IT low-voltage power grid in the coal mine,the four modules including the power module,the detection module,the analog control module and the display module are built by constructing analog switches in hardware and adding test output and analog digital feedback in software.So these realize the automatic detection of the insulation detection equipment before the work.Then,the system starts insulation detection after the completion of the self-test.So these improve the safety of the system insulation protection and the accuracy of the alarm information through the two-level alarm function.