基于改进PSO-Prony算法的谐波和间谐波分析  

Harmonics and Interharmonics Analysis Based on Improved PSO-Prony Algorithm

作　　者：何君如 杨俊华[1] 吴捷[2] 

机构地区：[1]广东工业大学自动化学院,广东广州510006 [2]华南理工大学电力学院,广东广州510641

出　　处：《陕西电力》2016年第4期33-37,共5页Shanxi Electric Power

基　　金：国家自然科学基金项目资助(51307025)

摘　　要：针对传统的谐波和间谐波检测方法受噪声影响较大这一问题,提出了一种有效的抑制噪声影响的方法。通过分析噪声条件下传统Prony算法在谐波和间谐波特征参数检测中存在的局限性,并根据噪声对谐波和间谐波信号的频率检测结果影响较小,对幅值检测结果影响较大的特点,提出了基于PSO算法和Prony法的谐波和间谐波检测新算法PS0-Prony算法。通过仿真分析表明,该方法准确有效,对不同强度的噪声都有较好的抗噪效果,为电力系统谐波和间谐波分析提供了一种新方法。The traditional harmonics and interharmonics detection method is greatly influenced by noise. In order to solve the problem, a kind of effective solution of noise suppression is proposed. By analyzing limitations of the traditional Prony algorithm in harmonics and interharmonics characteristic parameters detection, taking advantage of the characteristic of smaller impact on the frequency of harmonics and interharmonics signal ＆ larger influence on amplitude under the condition of noise, PSO-Prony algorithm is proposed tot harmonics and interharmonics detection method based on PSO algorithm and Prony algorithm. The simulation results show that this method is accurate, effective and has better antinoise performance under different intensity noise, which supplies a new method of power system harmonics and interharmonics analysis.

关 键 词：谐波分析 间谐波 PRONY算法 PSO-Prony算法 

分 类 号：TM714[电气工程—电力系统及自动化]