DOI:10.35833/MPCE.2019.000341 |
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Decoupling Scheme for Virtual Synchronous Generator Controlled Wind Farms Participating in Inertial Response |
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Page view: 111
Net amount: 599 |
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Author:
Jiangbei Xi1,Hua Geng1,Xin Zou2
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Author Affiliation:
1.Department of Automation, Tsinghua University, Beijing, China;2.State Grid Economic and Technological Research Institute Co. Ltd., Beijing, China
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Foundation: |
This work was supported by Science and Technology Project of State Grid Corporation of China (No. 5102-201956300A-0-0-00). |
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Abstract: |
In this paper, the dynamic coupling between the wind turbine rotor speed recovery (WTRSR) and inertial response of the conventional virtual synchronous generator (VSG) controlled wind farms (WFs) is analyzed. Three distinguishing features are revealed. Firstly, the inertial response characteristics of VSG controlled WFs (VSG-WFs) are impaired by the dynamic coupling. Secondly, when the influence of WTRSR is dominant, the inertial response characteristics of VSG-WFs are even worse than the condition under which WFs do not participate in the response of grid frequency. Thirdly, this phenomenon cannot be eliminated by only enlarging the inertia parameter of VSG-WFs, because the influence of WTRSR would also increase with the enhancement of inertial response. A decoupling scheme to eliminate the negative influence is then proposed in this paper. By starting the WTRSR process after inertial response period, the dynamic coupling is eliminated and the inertial response characteristics of WFs are improved. Finally, the effectiveness of the analysis and the proposed scheme are verified by simulation results. |
Keywords: |
Wind turbine rotor speed recovery (WTRSR) ; inertial response ; virtual synchronous generator (VSG) ; decoupling scheme |
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Received:May 20, 2019
Online Time:2021/03/22 |
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