Affiliations: [a]
School of Electrical Engineering and Automation, Henan Institute of Technology, Xinxiang, Henan, China
| [b]
Henan Engineering Research Center of Key Equipment for New Energy Power Generation, Xinxiang, Henan, China
| [c]
Training Center of State Grid Zhejiang Electric Power Co., LTD. Hangzhou, Zhejiang, China
Correspondence:
[*]
Corresponding author. Jingkun Yao, School of Electrical Engineering and Automation, Henan Institute of technology, Xinxiang, Henan 453003, China. E-mail: jkyao@hait.edu.cn.
Abstract: In order to improve the coordinated control effect of hierarchical power balance of new energy microgrid, this paper applies fuzzy control method to this system, and proposes a hierarchical control strategy based on event-triggered communication. Each DG is regarded as a proxy, and the continuous actual value of output is replaced by the state prediction value. Moreover, two different event trigger condition functions for frequency and voltage are designed based on Lyapunov method respectively. At the same time, each DG only communicates with its neighbor DG aperiodic at the event trigger time, and finally all DG are restored to the reference value provided by the virtual leader. Finally, this paper constructs a coordinated fuzzy control simulation system for hierarchical power balance of new energy microgrid. Combined with the simulation results, the method proposed in this paper is feasible.
Keywords: New energy, microgrid, hierarchical power, balance, fuzzy control
