A Comprehensive Inertia Control Method for Improving the Dynamic Characteristics of Hybrid AC-DC Microgrid

被引：0
|
作者：
Shi J. [1 ,2 ]
Li Y. [1 ]
He L. [1 ]
Wang Z. [1 ]
Jiao S. [1 ]
机构：
[1] College of Electrical and Information Engineering, Hunan University, Changsha
[2] Powerchina Central China Electric Power Engineering Corporation Limited, Zhengzhou
来源：
Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | 2020年 / 35卷 / 02期
关键词：
Hybrid AC-DC microgrid; Inertia control; Interconnecting converter; Wind turbine generator and energy storage combined system;
D O I：
10.19595/j.cnki.1000-6753.tces.181573
中图分类号：
学科分类号：
摘要：
Hybrid AC-DC microgrid has the problems of power balance and low inertia, thus this paper proposes a comprehensive inertia control method considering the inertial support capability of wind turbine generator (WTG) and energy storage (ES). Firstly, based on the configuration of hybrid AC-DC microgrid, the comprehensive inertia control principle is briefly analyzed. Secondly, the expression of the inertia power provided by WTG and ES in the hybrid microgrid is deduced in detail, and the WTG-ES combined inertia control strategy is proposed. Regarding the power balance in hybrid microgrid, based on the coupling relationship between the AC frequency and DC voltage, the expression of inertial transmission power of interconnecting converter is derived. Finally, a hybrid AC-DC microgrid model is built in Matlab/Simulink to verify the proposed comprehensive inertia control strategy. The simulation results show that the proposed control strategy can make full use of the large inertia characteristics, and participates in the frequency and voltage regulation with WTG to provide inertial support for the system. This strategy can maintain the power balance in hybrid microgrid while ensuring the power quality at both sides, which improves the dynamic performance the hybrid microgrid. © 2020, Electrical Technology Press Co. Ltd. All right reserved.
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页码：337 / 345
页数：8
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