电力系统间谐波检测方法

Monitoring Method of Power System Interharmonics

为了能够为间谐波的治理提供良好的依据,改进了支持向量机间谐波检测算法,并用Matlab仿真软件对该方法和基于最小二乘间谐波测量方法进行了对比评估。研究结果表明:在同等条件下基于改进型支持向量机间谐波检测方法计算精度略低,但可以在小样本的条件下测量间谐波。而基于最小二乘间谐波检测方法测量精度高、计算量小,但需要较长的时间窗口。

To provide a good basis for interharmonic treatment, the interharmonic detecting algorithm is improved based on support vector machines （SVM）, which is compared with least-squares algorithm using MATLAB. The results indicate that the interharmonic detecting method based on improved SVM has relatively low measuring accuracy, however, it can detect interharmonics in the small samples window. Meanwhile, the method based on leastsquares algorithm has the advantage of high detecting accuracy and low calculation amount, but it needs a relatively long time window under the same condition.