雙饋風力發(fā)電系統(tǒng)諧波檢測分析
王嘉毅，張延遲，徐祥平，高海凌
(上海電機學院 電氣學院，上海 200240)
摘 要： 介紹了雙饋風力發(fā)電系統(tǒng)諧波，利用Matlab 軟件搭建了2 MW 風電機組的模型，結(jié)合IEC 61400-21 標準，通過快速傅里葉變換，分別對發(fā)電機定子側(cè)、轉(zhuǎn)子側(cè)和變流器網(wǎng)側(cè)諧波電流進行分析，并從功率的角度對風電場中的諧波電流檢測與傳統(tǒng)的諧波電流檢測進行了比較。仿真結(jié)果表明，雙饋風力發(fā)電系統(tǒng)諧波主要來自于網(wǎng)側(cè)變流器，且與風機的發(fā)電功率無關(guān)。
關(guān)鍵詞： 風力發(fā)電；諧波分析；Matlab 仿真
中圖分類號：TM315；TM712 文獻標識碼：A 文章編號：1007-3175(2015)03-0047-05
Harmonic Analysis and Detection of Double-Fed Wind Power Generating System
WANG Jia-yi, ZHANG Yan-chi, XU Xiang-ping, GAO Hai-ling
（School of Electrical Engineering, Shanghai Dianji University, Shanghai 200240, China）
Abstract: This paper presented harmonics of a double-fed wind power generating system. The software Matlab was adopted to simulate the model of 2MW wind turbine generator. Combined with the international standard IEC 61400-21, this paper analyzed the harmonic current of generator stator, the generator rotor and the grid side of the converter respectively by fast Fourier transform (FFT) and made comparison between harmonic current detection in wind farms and the traditional harmonic current detection from power point of view. The simulation results show that the harmonic of double-fed wind power generating system is mainly from the grid side of converter and has nothing with the generating power of wind turbine.
Key words: wind power generating; harmonic analysis; Matlab simulation
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