TY - GEN
T1 - A Communication-less Secondary Frequency Control Method for Islanded Microgrids Based on Mode Switching
AU - Wang, Jiazhi
AU - Wu, Tong
AU - Liu, Zeng
AU - Liu, Jinjun
AU - Shi, Yidong
N1 - Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - A communication-less secondary frequency control method based on mode-switching is proposed in this paper to compensate for the frequency deviations in the islanded microgrids consisting of several distributed generators connected in parallel, where the droop control strategy is applied. To realize this, the secondary controller changes its control strategy during the secondary control processes. In detail, after the secondary control is triggered by obvious frequency deviations, the secondary controller switches to the first mode to make the output power of each distributed generator be the same through a proportional regulator. Then, the secondary controller switches to the other two modes in turn to eliminate the frequency deviations. The proposed method can achieve the frequency recovery and power sharing goals of secondary control at the same time with communication-less manner. Meanwhile, the triggering delay phenomenon is verified having no influence on the proposed method compared to conventional secondary frequency control based on proportional-integral regulator. Both software simulation and hardware experiments are used to verify the proposed method.
AB - A communication-less secondary frequency control method based on mode-switching is proposed in this paper to compensate for the frequency deviations in the islanded microgrids consisting of several distributed generators connected in parallel, where the droop control strategy is applied. To realize this, the secondary controller changes its control strategy during the secondary control processes. In detail, after the secondary control is triggered by obvious frequency deviations, the secondary controller switches to the first mode to make the output power of each distributed generator be the same through a proportional regulator. Then, the secondary controller switches to the other two modes in turn to eliminate the frequency deviations. The proposed method can achieve the frequency recovery and power sharing goals of secondary control at the same time with communication-less manner. Meanwhile, the triggering delay phenomenon is verified having no influence on the proposed method compared to conventional secondary frequency control based on proportional-integral regulator. Both software simulation and hardware experiments are used to verify the proposed method.
KW - communication-less
KW - islanded microgrids
KW - mode switching
KW - secondary frequency control
UR - https://www.scopus.com/pages/publications/85143752007
U2 - 10.1109/PEAC56338.2022.9959123
DO - 10.1109/PEAC56338.2022.9959123
M3 - 会议稿件
AN - SCOPUS:85143752007
T3 - PEAC 2022 - 2022 IEEE International Power Electronics and Application Conference and Exposition, Proceedings
SP - 688
EP - 692
BT - PEAC 2022 - 2022 IEEE International Power Electronics and Application Conference and Exposition, Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 3rd IEEE International Power Electronics and Application Conference and Exposition, PEAC 2022
Y2 - 4 November 2022 through 7 November 2022
ER -