STUDY ON WAVELET ENTROPY THEORY ANDADAPTABILITY OF ITS APPLICATION IN POWER SYSTEM
Qian Qing-quan · Power System Technology · 2004
The real-time data gathering in power system contain the complexity and uncertainty of system model and it is very important to mine and fuse one or a series of universal applicable quantities from these data to detect the fault or stability of the system. Here, the feasibility of applying wavelet entropy to power system fault detection and judgment is analyzed. The concept of wavelet entropy based on wavelet analysis theory is researched and the definitions of two kinds of wavelet entropy and corresponding calculation methods are put forward. It is verified by simulation results that the wavelet entropy can be used in fault detection of transmission line, and the prospects of applying wavelet entropy to power system fault detection, judgment and fault classification are discussed.