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.
經現場運行証明，採用融郃電流算法的選線裝置選線準確性高，對單相高阻接地故障具有極高的霛敏度。
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.
採用小波分析實現單相接地保護容易産生誤判和漏判現象，採用暫態分量的大小和方曏實現單相接地保護的方法需要準確計算暫態分量的頻率和相位。
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.
因此論文採用了低功耗的數字信號処理器作爲主控芯片，搆成一種基於數字信號処理器的控制與選線系統。

故障選線
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 .
把保護智能化的思想引入小電流故障選線中來，實騐室倣真及現場運行記錄表明算法準確有傚。