Journal of Shanghai Jiao Tong University

Journal of Shanghai Jiaotong University >

2024 , Vol. 58 >Issue 12: 1946 - 1956

DOI: https://doi.org/10.16183/j.cnki.jsjtu.2023.257

New Type Power System and the Integrated Energy

Participation of Energy Storage Batteries in Primary Frequency Control for Power Grid Considering Dynamic Frequency Inertia Characteristics

  • CAI Zhenhua ,
  • LI Canbing ,
  • YANG Tongguang ,
  • WEI Juan ,
  • GE Rui ,
  • LI Lixiong
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  • 1. Key Laboratory of Energy Monitoring and Edge Computing for Smart City of Hunan Province, Hunan City University, Yiyang 413000, Hunan, China
    2. College of Electrical and Information Engineering, Hunan University, Changsha 410082, China
    3. School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
    4. National Electric Power Dispatching and Control Center, Beijing 100024, China

Received date: 2023-06-19

  Revised date: 2023-08-29

  Accepted date: 2023-10-09

  Online published: 2023-10-25

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Abstract

The inertial of the system and the maximum frequency deviation caused by the energy storage batteries when participating in grid frequency regulation need to be improved. Virtual synchronous generator control (VSG) for grid side converter is expected to improve the performance of storage battery energy participation in grid primary frequency regulation. Therefore, participation of energy storage batteries in primary frequency control for power grid is proposed considering dynamic frequency inertia characteristics. To utilize the inertial support and primary frequency regulation capability of the energy storage batteries for the grid, an additional active power module is constructed, and the active power generated by the virtual inertial control and droop control strategies of the energy storage batteries are used as additional power for variable rotor inertial control and output feedback model predictive control, respectively. For the mismatch between the inertia characteristics of the virtual synchronous machine and the grid demand, a variable rotor inertia control strategy considering system frequency deviation and system frequency change rate is designed to realize the real-time adjustment of rotor inertia to the system frequency. The output feedback model prediction control of VSG is further proposed to achieve dynamic prediction and compensation of system frequency deviation by establishing a feedback channel between rotor angular frequency increment and torque increment. A comparative analysis with three existing control strategies shows that the control strategy proposed can make full use of the frequency regulation capability of the energy storage battery and VSG to effectively reduce the frequency deviation and frequency variation rate of the grid.

Key words： inertial response; primary frequency regulation; virtual synchronous generator (VSG); variable rotor inertial control; output feedback model predictive control

Cite this article

CAI Zhenhua , LI Canbing , YANG Tongguang , WEI Juan , GE Rui , LI Lixiong . Participation of Energy Storage Batteries in Primary Frequency Control for Power Grid Considering Dynamic Frequency Inertia Characteristics[J]. Journal of Shanghai Jiaotong University, 2024 , 58(12) : 1946 -1956 . DOI: 10.16183/j.cnki.jsjtu.2023.257

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