fault feeder detection

基本解释

Field operation shows that this device has high accuracy of earthed fault feeder detection especially for single phase ground fault through high-impedance.
经现场运行证明，采用融合电流算法的选线装置选线准确性高，对单相高阻接地故障具有极高的灵敏度。
Characteristics of single-phase-to-ground fault in distribution system are analyzed, and the faulty feeder detection methods based on steady and transient component are compared.
采用小波分析实现单相接地保护容易产生误判和漏判现象，采用暂态分量的大小和方向实现单相接地保护的方法需要准确计算暂态分量的频率和相位。
So, the thesis adopts a type of low loss DSP processor as main controller which composing the control and fault feeder detection system based on DSP in order to deal with the question.
因此论文采用了低功耗的数字信号处理器作为主控芯片，构成一种基于数字信号处理器的控制与选线系统。

故障选线
The idea of intellectualized relay is introduced in fault feeder detection for the non-effective earthing system. The tests and spot records of fault show that this arithmetic is good for all kinds of single fault .
把保护智能化的思想引入小电流故障选线中来，实验室仿真及现场运行记录表明算法准确有效。