To solve the disadvantage of slow action of existing feed protection switches, a leakage detection device for mine power supply network based on dual-controller was designed.
针对现有馈电保护开关动作慢的缺点，设计了一种基于双控制器的矿井供电网络漏电检测装置。
2
The leakage still can not be prevented by the spillway reinforcing treatment and grouting impervious for many years, the damage speed of the spillway concrete still fails to slow down.
多年来对溢流坝不断加固治理以及灌浆防渗，但是渗漏仍不能遏止，溢流坝混凝土的破坏速度仍未能减缓。
3
The abrupt change and the slow change of leakage current are identified and detected by the continuous moving variation method and the window moving variation method.