中国电机工程学报2017，Vol.37Issue(8)：2270-2278,9.DOI:10.13334/j.0258-8013.pcsee.160898
计及频率偏移的动态谐波相量测量算法
Dynamic Harmonic Phasor Measurement Algorithm Considering Frequency Deviation
摘要
Abstract
Considering the power system's dynamic characteristics and frequency deviation, a dynamic harmonic phasor measurement algorithm was proposed based on Taylor series to attain harmonic phasor estimations. Firstly, the frequency of fundamental phasor was accurately attained by dynamic phasor estimation algorithm and the frequency deviation of harmonic phasor can be calculated according to the frequency estimation of fundamental phasor. Then, the corresponding coefficient matrix of the harmonic phasor calculated off-line in form of lookup table is selected to modify the initial harmonic phasor estimation attained via discrete Fourier transform (DFT). Simulated signals and filed data are employed to evaluate the performance of the proposed algorithm. The results show that the proposed algorithm provides more accurate harmonic phasor estimation under various conditions such as frequency deviation, frequency ramping and power oscillation, compared to that of DFT at the cost of minor computational burden increase. Compared with windowed and interpolated algorithms, the computational complexity of the proposed algorithm is dramatically reduced, so that it is more favorable to be adopted in field applications.关键词
泰勒估计/动态谐波相量模型/频率偏移/谐波测量/运算量优化Key words
Taylor approximation/dynamic harmonic phasor estimation/frequency deviation/harmonic measurement/computation optimization分类
信息技术与安全科学引用本文复制引用
张佳怡,符玲,熊思宇,麦瑞坤..计及频率偏移的动态谐波相量测量算法[J].中国电机工程学报,2017,37(8):2270-2278,9.基金项目
国家杰出青年科学基金(51525702) （51525702）
国家自然科学青年基金(51407150) （51407150）
中央高校基本科研业务费专项资金资助(2682015CX028). The National Science Fund for Distinguished Young Scholars (51525702) （2682015CX028）
National Natural Science Foundation of China (51407150) （51407150）
The Fundamental Research Funds for the Central Universities (2682015CX028) （2682015CX028）
