Title :
Fault Line Detection of Non-Effectively Earthed Neutral System Based on Modulus Maximum Determining Polarity
Author :
Yue Qing-Yu ; Mu Long-Hu ; Wang Li-yan
Author_Institution :
Dept. of Electr. Eng., Tongji Univ., Shanghai
Abstract :
The traditional signal analysis method couldn´t supply the part time-frequency characteristics of saltation signal. This paper analyzes the theory of fault line detection of non-effectively earthed neutral system based on modulus maximum determining polarity. A simulation of the non-effectively earthed neutral system is built here. It verifies the correctness and practicability of the method which is used in fault line detection, and shows a way of how to choose the wavelet function and the character scale. All of the results in this paper present a plausible way to transient protection and fault line detection.
Keywords :
earthing; fault diagnosis; power system protection; wavelet transforms; MU wavelet function; character scale; fault line detection; modulus maximum determining polarity; non-effectively earthed neutral system; transient protection; Circuit faults; Electrical fault detection; Fault detection; Grounding; Power system transients; Signal analysis; Signal processing; Time frequency analysis; Wavelet analysis; Wavelet transforms;
Conference_Titel :
Power and Energy Engineering Conference, 2009. APPEEC 2009. Asia-Pacific
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-2486-3
Electronic_ISBN :
978-1-4244-2487-0
DOI :
10.1109/APPEEC.2009.4918376
