本文選題：雙饋風力發(fā)電機 + 三相短路電流��； 參考：《中國電機工程學報》2017年18期

【摘要】：直流母線串入直流卸荷電路(Chopper)保護是雙饋風力發(fā)電機(double fed induction generators,DFIG)常用的保護措施。Chopper保護動作對DFIG的暫態(tài)過程及其暫態(tài)短路電流有著重要影響,為此,該文針對Chopper啟動后的雙饋風力發(fā)電系統(tǒng)暫態(tài)過程建立含Chopper保護元件的暫態(tài)等值電路,通過分析Chopper保護投入后DFIG磁鏈、電壓的變化,推導出DFIG三相短路電流最大值以及周期分量有效值的計算模型。最后對比PSCAD/EMTDC的仿真結果,驗證了文中建立的三相短路電流計算模型的準確性。
[Abstract]:Chopper protection is a common protection measure for doubly-fed wind turbine with double fed induction generators and DFIG.Chopper protection has an important effect on the transient process and transient short-circuit current of DFIG. In this paper, a transient equivalent circuit with Chopper protection element is established for the transient process of doubly-fed wind power generation system after Chopper start-up. The variation of DFIG flux and voltage after the Chopper protection is put into operation is analyzed. The calculation model of the maximum value of DFIG three-phase short-circuit current and the effective value of periodic component is derived. Finally, compared with the simulation results of PSCAD/EMTDC, the accuracy of the three-phase short-circuit current calculation model established in this paper is verified.
【作者單位】： 河海大學能源與電氣學院;中國電建集團華東勘測設計研究院有限公司;
【基金】：國家自然科學基金項目(51377047,51190102)~~
【分類號】：TM315
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本文編號：1903799