The protection of power system is quick detection and localization of fault in order to act rightly and clear out the fault.
电力系统的保护就是通过对故障进行快速的检测、定位，达到正确动作、消除故障的目的。
Wavelet analysis, also called wavelet transform, is a new analysis method with good time frequency localization characteristic, so it is suitable for fault analysis of power system.
小波分析(或称小波变换)是一种新的时频分析方法，它具有良好的时频局部化特性，适用于电力系统故障分析。
Coupled with the observation noise in the network environment, the Internet has become a complex dynamic system, which a great challenge for traditional deterministic fault localization technique.
加之网络中存在一定的观测噪声，互联网俨然变成了一个复杂的动态系统，这为传统确定性故障定位技术提出了新的要求和挑战。
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