Journal of Shanghai Jiao Tong University

Journal of Shanghai Jiaotong University >

2024 , Vol. 58 >Issue 12: 1903 - 1914

DOI: https://doi.org/10.16183/j.cnki.jsjtu.2023.246

New Type Power System and the Integrated Energy

Transient Frequency Interaction Between Grid-Following and Grid-Forming Sources in Windfarm Under Severe Grid Faults

  • ZHANG Yu ,
  • ZHANG Chen ,
  • BAO Yanhong ,
  • WU Feng ,
  • CAI Xu
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  • 1. School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
    2. NARI Group Corporation, State Grid Electric Power Research Institute, Nanjing 211106, China

Received date: 2023-06-15

  Revised date: 2023-07-24

  Accepted date: 2023-08-07

  Online published: 2023-08-16

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Abstract

To address the issues of transient stability in heterogeneous wind farms with grid-forming energy storage, a transient analysis model of the heterogeneous system is developed, which incorporates both grid-following wind turbine units and grid-forming energy storage sources. The mechanism of frequency interaction among heterogeneous power sources during severe grid short-circuit faults is revealed by the model. It is discovered that grid-forming energy sources with slower rotor angle dynamics exhibits a frequency pinning effect on those with faster rotor angle dynamics, and the latter has a rotor angle co-driving effect on the former under the condition of frequency pinning. By solving the critical d-axis current, the impacts of wind power integration rate, the proportion of energy storage installation, and other parameters on frequency interaction are analyzed. The effects of wind turbine unit reactive power injection and the current limiting strategy of grid-forming energy storage sources are also discussed. Finally, the proposed mechanisms are comprehensively validated by simulations using MATLAB/Simulink platform.

Key words： heterogeneous system; windfarm; battery energy storage sources; transient stability; frequency pinning effect

Cite this article

ZHANG Yu , ZHANG Chen , BAO Yanhong , WU Feng , CAI Xu . Transient Frequency Interaction Between Grid-Following and Grid-Forming Sources in Windfarm Under Severe Grid Faults[J]. Journal of Shanghai Jiaotong University, 2024 , 58(12) : 1903 -1914 . DOI: 10.16183/j.cnki.jsjtu.2023.246

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