串联型微电网分散式频率控制策略  

Decentralized Frequency Control Scheme of Cascaded-type Microgrid

作　　者：李浪 罗朝旭 周克 田鹏 LI Lang;LUO Zhao-xu;ZHOU Ke;TIAN Peng(Moutai Institute,Renhuai 564507,China;不详)

机构地区：[1]茅台学院,酿酒工程自动化系,贵州仁怀564507 [2]湖南工业大学,电气与信息工程学院,湖南株洲412007

出　　处：《电力电子技术》2024年第1期81-84,89,共5页Power Electronics

基　　金：国家自然科学基金(62263022);贵州省级科技计划(ZK[2022]YB539)。

摘　　要：为了解决现有串联型微电网分散式控制频率跌落问题,此处提出了一种串联型微电网分散式频率恢复控制策略。该控制策略利用串联型微电网线路电流公共信息,通过本地获取的线路电流频率构造频率恢复项,将其作为偏置加入功率因数角下垂控制中,实现了分散式频率恢复控制。通过稳态分析,阐明了所提控制策略的机理。实时仿真结果表明:所提控制方法能有效解决现有串联型微电网频率跌落问题,随着负载变化均能将系统的频率控制在给定值,该控制策略提高了系统的频率质量,完全分散式的控制方式提高了系统的可靠性。In order to solve the frequency drop problem of the existing decentralized control schemes for cascadedtype microgrid,a decentralized frequency restoration control scheme for cascaded-type microgrid is proposed.The control strategy uses the common information of transmission line current for cascaded-type microgrid,then constructs the frequency restoration term through the local line current frequency.Based on the power factor angle droop control,the frequency restoration term is added,the decentralized frequency restoration control is realized.Further,the mechanism of the proposed control strategy is revealed by the steady-state analysis.The real-time simulation results show that the proposed control method can effectively solve the frequency drop problem for cascaded-type microgrid,and the frequency of the system can be controlled at a given value with the load changes.The proposed control strategy improves the frequency quality of the system,and the fully decentralized control manner improves the reliability of'the system.

关 键 词：串联型微电网 分散式控制 频率恢复 

分 类 号：TN819.1[电子电信—信息与通信工程]