小波变换作为新的数学分支，在这里用来提取电流行波信号中的故障信息，实现原理方案。
Wavelet transform was proved to be a suitable tool for the analysis of travelling waves and is utilized here to extract fault information from current travelling waves and implement protection scheme.
针对波阻抗方向继电器利用初始电压和电流行波的比值构成的特点，提出了基于小波变换的继电器算法。
According to the property that the surge impedance relay is realized by the ratio of voltage and current travelling waves, the relay's algorithm based on wavelets is present.
在行波故障测距中，传统的数据采集系统无法适应采集高速变化的暂态电压、电流行波的要求，难以实现故障的精确定位。
In traveling-wave fault locating, the traditional data acquisition system can not record the fast-changed traveling waves of voltage and current for accurate fault locating.
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