| 引用本文: | 董家伟,王志新,朱国忠,包俊.孤岛运行下垂逆变器二次调频方法[J].电力自动化设备,2022,42(5): |
| DONG Jiawei,WANG Zhixin,ZHU Guozhong,BAO Jun.Secondary frequency regulation method for droop inverters in island operation[J].Electric Power Automation Equipment,2022,42(5): |
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| 摘要: |
| 为消除下垂控制引起的微电网频率静差，提出一种基于积分超前补偿环节的孤岛运行的下垂逆变器二次调频方法。采用基于组件连接法的小信号状态空间分析法对系统参数进行分析和设计，实现了逆变器之间无需通信即可消除频率静差，且提高了逆变器下垂系数的稳定范围和多并联逆变器系统的稳定性。在MATLAB/Simulink上对多并联逆变器系统进行仿真，验证了所提方法的有效性。 |
| 关键词: 下垂控制 二次调频 小信号状态空间分析法 稳定性 逆变器 |
| DOI：10.16081/j.epae.202202005 |
| 分类号:TM73;TM464 |
| 基金项目:国家重点研发计划项目(2018YFB1503000,2018YFB1503001)；上海市科委科技计划项目(20dz1206100)；上海市经信委工业强基计划项目(2021) |
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| Secondary frequency regulation method for droop inverters in island operation |
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DONG Jiawei1, WANG Zhixin1, ZHU Guozhong2, BAO Jun3
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1.Department of Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;2.Shanghai Chint Power System Co.,Ltd.,Shanghai 200210, China;3.Shanghai Xilong Technology Co.,Ltd.,Shanghai 201517, China
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| Abstract: |
| In order to eliminate the static frequency error of microgrid caused by droop control, a secondary frequency regulation method of droop inverters in island operation is proposed based on integral lead compensation link. The small signal state space analysis method based on component connection method is adopted to analyze and design the system parameters, which realizes the elimination of static frequency error without communication between inverters, and improves the stability range of droop coefficient of inverters and the stability of multi-parallel inverter system. The simulation of a multi-parallel inverter system in MATLAB/Simulink is carried out, verifying the effectiveness of the proposed method. |
| Key words: droop control secondary frequency regulation small signal state space analysis method stability electric inverters |
