A magnitude-phase detection method for grid-connected voltage of wind power generation system | |
Zhang, Xiaoying2; Cheng, Zhizhuang2; Wang, Xiaolan2; Wen, Zhiwei1 | |
2012 | |
会议日期 | June 24, 2012 - June 26, 2012 |
会议地点 | Wuhan, China |
关键词 | Current voltage characteristics Dynamic response Electric power generation Electric power transmission networks Signal detection Wind power decouple Grid-connected operation Negative sequence components Phase detection Positive-sequence components PQR transformation Software phase locked loops Wind power generation systems |
页码 | 926-932 |
英文摘要 | In order to keep low-voltage ride-through under the grid faults for wind power generation system, the magnitude and phase information of the system grid-connected voltage must be detected fleetly and precisely so that the control subsystem of wind power generation system can tackle the faults. The conventional three-phase software phase-locked loop (SPLL) has a low speed of dynamic response because of the effects of negative-sequence and harmonic components. Also it can not exactly extract the fundamental positive-sequence magnitude and phase of three-phase voltage. This paper proposes a novel three-phase magnitude-phase detection method based on PQR transformation. The proposed method can decouple the fundamental positive-sequence component and negative-sequence component of three-phase voltage, and detect the magnitudes and phases of them respectively. The simulation results verify that the proposed method can overcome the shortcomings of conventional three-phase SPLL, track the magnitude and phase information of the fundamental positive-sequence voltage accurately and improve the speed of dynamic response effectively under the bad harmonic condition. The novel magnitude-phase detection method can be used to detect exactly the grid-connected voltage of wind power generation system. © 2012 Huazhong Univ of Sci & Tec. |
会议录 | Proceedings of 2012 International Conference on Modelling, Identification and Control, ICMIC 2012
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会议录出版者 | IEEE Computer Society |
语种 | 英语 |
内容类型 | 会议论文 |
源URL | [http://ir.lut.edu.cn/handle/2XXMBERH/116116] ![]() |
专题 | 电气工程与信息工程学院 |
作者单位 | 1.Gansu Electric Power Research Institute, Lanzhou 730050, China 2.School of Electrical and Information Engineering, Lanzhou University of Technology, Lanzhou 730050, China; |
推荐引用方式 GB/T 7714 | Zhang, Xiaoying,Cheng, Zhizhuang,Wang, Xiaolan,et al. A magnitude-phase detection method for grid-connected voltage of wind power generation system[C]. 见:. Wuhan, China. June 24, 2012 - June 26, 2012. |
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