• CSCD核心库收录期刊
  • 中文核心期刊
  • 中国科技核心期刊

ELECTRIC POWER CONSTRUCTION ›› 2023, Vol. 44 ›› Issue (3): 113-121.doi: 10.12204/j.issn.1000-7229.2023.03.012

• New Energy Power Generation • Previous Articles     Next Articles

Microgrid Frequency Control Based on Cooperative Control Theory

LI Jinghua(), ZHU Zhenduo, LAN Fei   

  1. Guangxi Key Laboratory of Power System Optimization and Energy-Saving Technology(Guangxi University), Nanning 530004, China
  • Received:2022-04-18 Online:2023-03-01 Published:2023-03-02
  • Supported by:
    National Natural Science Foundation of China(51977042)


To improve the dynamic performance of the microgrid frequency response, a microgrid frequency control strategy based on the cooperative control theory is proposed. According to the microgrid frequency characteristics and the frequency-regulation characteristics of the micro-sources, macro variables containing system dynamic performance and control indexes are built on the basis of cooperative control theory, and the cooperative control law of the microgrid frequency regulation is derived, then a microgrid cooperative controller is designed. The energy storage device quickly participates in frequency regulation when the system is disturbed and reduces the deterioration of frequency by releasing or absorbing power. The diesel generator then regulates the power of the microgrid according to the change of energy storage power and system frequency to ensure the reliability of power supply on the micro-source side. Finally, a simulation platform based on MATLAB/Simulink software is built to verify the proposed control strategy and to compare and analyze the microgrid frequency regulation effect under different control methods. The simulation results show that the proposed cooperative controller can fully utilize the frequency-regulation characteristics of the micro-source to quickly smooth out the frequency fluctuations caused by power imbalance in the microgrid when the microgrid power is disturbed.

Key words: microgrid, cooperative control, frequency stability, diesel generator, energy storage

CLC Number: