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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Zhang, Xiaoying Cheng, Zhizhuang Wang, Xiaolan Wen, Zhiwei |
| Copyright Year | 2012 |
| Description | Author affiliation: School of Electrical and Information Engineering, Lanzhou University of Technology, 730050, China (Zhang, Xiaoying; Cheng, Zhizhuang; Wang, Xiaolan) || Gansu Electric Power Research Institute, Lanzhou 730050, China (Wen, Zhiwei) |
| Abstract | 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. |
| Starting Page | 926 |
| Ending Page | 932 |
| File Size | 1285195 |
| Page Count | 7 |
| File Format | |
| ISBN | 9781467315241 |
| e-ISBN | 9780956715715 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2012-06-24 |
| Publisher Place | China |
| Access Restriction | Subscribed |
| Rights Holder | Huazhong Univ of Sci & Tec |
| Subject Keyword | Voltage fluctuations Grid-connected operation Wind power generation Harmonic analysis Decouple Magnitude-phase detection PQR transformation Power grids Voltage control Power harmonic filters |
| Content Type | Text |
| Resource Type | Article |
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