【作者】 杨国良； 李惠光；

【Author】 YANG Guoliang LI Huiguang (Yanshan University,Qinhuangdao Hebei,066004 China)

【机构】 燕山大学电气工程学院；

【摘要】 在风力发电系统中,由于电力电子设备的引入不可避免地存在谐波污染问题,系统所产生的谐波若不能得到有效抑制和滤除,会对风力发电系统产生很多不利影响,所以风力发电系统中谐波检测和抑制就具有非常重要的意义。利用小波多分辨分析的方法进行谐波检测,将含谐波的电流进行检测并分离出基波分量和谐波分量。通过仿真实验,证明此方法对风力发电系统的谐波检测具有很好的效果,为更好地分析和抑制谐波提供了可靠的理论依据。更多还原

【Abstract】 Harmonics contaminate will be been inevitably because of power electronic device being used in the wind power generation system,if the harmonics produced can’t be suppressed and filtered effectively,it causes much adverse influence to the system.It is very important to measure and suppress harmonics in the wind power generation system.The method of Multi-resolution wavelet is applied to the harmonics detection in this paper,fundamental component and harmonics component are measured and separated from the current including harmonics.It is proved that the harmonic signal can be measured by using the method of Multi-resolution wavelet analysis and good effectiveness is obtained by the simulation results,simulation validates the feasibility of the proposed method and supply credibility theory rule for further analysis and suppressing harmonics.更多还原