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Stability Analysis and Parameter Optimization of Grid-connected Converter During Low Voltage Ride Through
ID：136 View Protection：ATTENDEE Updated Time：2021-12-03 10:41:46 Hits：960 Oral Presentation

Start Time：2021-12-16 09:45（Asia/Shanghai）

Duration：15min

Session：C Power system and automation » C3Session 15

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Abstract
When the grid voltage drops due to grid fault, the voltage source converter (VSC) under the weak grid will enter the stage of low voltage ride through (LVRT). Many countries have formulated corresponding standards, i.e. reactive power compensation is performed according to the grid voltage to support the grid. However, there are stability issues when using the LVRT strategy. This paper first reveals the conditions for the existence of equilibrium points and their distribution under the typical LVRT strategy. Besides, the setting of the current order is investigated for avoiding instability. Furthermore, the influence of bandwidths on stability range is analyzed and the selection of bandwidth to maintain stability is studied. Finally, the correctness of the theoretical analysis is verified by simulation.
Keywords
Voltage source converter,LVRT,nonlinear modeling,equilibrium point,transient stability
Speaker
Xiaoshun Guo
student Huazhong University of Science and Technology

Submission Author
Xiaoshun Guo Huazhong University of Science and Technology
Xinchun Lin Huazhong University of Science and Technology
Guangzhou Huang Huazhong University of Science and Technology
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Important Date

  • Conference Date

    Jul 11

    2023

    to

    Aug 18

    2023

  • Nov 10 2021

    Draft paper submission deadline

  • Dec 10 2021

    Registration deadline

  • Dec 11 2021

    Contribution Submission Deadline

Sponsored By
IEEE IAS
Organized By
IEEE IAS Student Chapter of Southwest Jiaotong University (SWJTU)
IEEE IAS Student Chapter of Huazhong University of Science and Technology (HUST)
IEEE PELS (Power Electronics Society) Student Chapter of HUST
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