Secondary Frequency and Voltage Regulation Strategy of Microgrid based on Distributed Consensus Algorithm
Fei Zhai, Yong Gang Shi, Bao Xie, Jianhui Su, Xun Jiang · 2023
In view of the defects of traditional droop control with differential regulation and the problems of uneven power sharing, slow regulation speed and complex controller design in some distributed secondary control methods, this paper proposes a secondary control strategy of microgrid based on distributed consensus algorithm. It uses the control quantity information of the distributed generations on the adjacent nodes collected by the communication network to obtain the secondary regulation quantity and send it to the droop control to shift the droop curve. After the load fluctuation occurs, the system can not only realize the rapid and stable frequency and voltage regulation, but also ensure the reasonable sharing of the output power of the distributed generations involved in the regulation. Finally, a model was built on MATLAB/Simulink platform to verify the effectiveness of the proposed control strategy.