基于滑模变结构的含不平衡负荷微电网控制策略研究  

Study of micro-grid control strategy contained unbalanced load based on sliding-mode variable structure

作　　者：朱鑫[1] 刘俊勇[1] 刘洋[1] 向月[1] 朱国俊 戴松灵 成思琪[1] 田昊[1] 

机构地区：[1]四川大学电气信息学院,四川成都610065 [2]四川省电力公司电力经济技术研究院,四川成都610065

出　　处：《电力系统保护与控制》2015年第6期25-32,共8页Power System Protection and Control

基　　金：中欧中小企业节能减排科研合作资金项目(SQ2011ZOF000004)~~

摘　　要：不平衡负荷会增加系统运行电压的不平衡度和谐波畸变率,影响微电网电能质量。利用滑模变结构控制鲁棒性强、动态响应性好的特点,将其应用于含不平衡负荷微电网运行控制中。对各系统建立了相关数学模型,并设计了相应的控制策略,实现了微电网不同运行模式间的平滑切换。PSCAD/EMTDC仿真结果表明了该方法的可行性和有效性。Unbalanced load increases imbalance and harmonic distortion of system operating voltage, which results in the influence of power quality in micro-grid. Sliding-mode variable structure control is proved to be robust and has plenty of remarkable dynamic response characteristics, so that it could be applied to the micro-grid operation with unbalanced load control. The mathematical model of the system is established, and an appropriate control strategy is designed to achieve a smooth mode-switch among diverse micro-grid operating modes. The experimental results of PSCAD/EMTDC show the feasibility and effectiveness of the proposed approach.

关 键 词：微电网 滑模变结构 电能质量 不平衡负荷 控制策略 

分 类 号：TM732[电气工程—电力系统及自动化]