Abstract：Interharmonics does very harm to the security and economical operation of power system. Therefore, it is necessary and important to do researches on analyzing harmonics and interharmonics accurately and reliably. For the actual signal of power system, harmonics and interharmonics is not often determined in advance. So in the FFT spectrum, it is not easy to determine that which are the actual frequency signal lines, which are the false spectral lines. Autoregression (AR) model is adopted in this paper to obtain each frequency component of signal. Then the double spectrum peaks interpolation algorithm of Rife-Vincent (Ⅲ) is used to correction the amplitude, frequency, and phase angle. Simulation results indicate that the proposed approach is more accurate.
张惠娟, 汪友华, 王艳廷, 宗世芳, 李呈祥. 基于AR模型的电力系统间谐波分析[J]. 电工技术学报, 2010, 25(7): 144-149.
Zhang Huijuan, Wang Youhua, Wang Yanting, Zong Shifang, Li Chengxiang. Power System Interharmonics Analysis Based on Autoregression Model. Transactions of China Electrotechnical Society, 2010, 25(7): 144-149.
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2010, Vol. 25 
