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最后，利用所开发的电牵引谐波渗透程序ethp对一规模较大的实际电网进行了谐波分布计算，并分析了计算结果。
In the end, using the developed program ETHP (Electric Traction Harmonic Penetration), an actual large scale network is studied, and the calculation results are analysed.
该方法基于随机矢量加法法则，考虑到不同电压等级之间谐波的相互渗透作用，提出了可行的解决途径。
In terms of the summation rule of random vectors, the approach effectively solves the problem involved in the effect of the harmonic emission on the individual voltage levels.
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