基于滑模变结构的含不平衡负荷微电网控制策略研究

朱鑫; 刘俊勇; 刘洋; 向月; 朱国俊; 戴松灵; 成思琪; 田昊

引用本文:	朱鑫,刘俊勇,刘洋,等.基于滑模变结构的含不平衡负荷微电网控制策略研究[J].电力系统保护与控制,2015,43(6):25-32.
	ZHU Xin,LIU Junyong,LIU Yang,et al.Study of micro-grid control strategy contained unbalanced load based on sliding-mode variable structure[J].Power System Protection and Control,2015,43(6):25-32

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基于滑模变结构的含不平衡负荷微电网控制策略研究
朱鑫¹, 刘俊勇¹, 刘洋¹, 向月¹, 朱国俊², 戴松灵², 成思琪¹, 田昊¹
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

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。

关键词: 微电网滑模变结构电能质量不平衡负荷控制策略

DOI：10.7667/j.issn.1674-3415.2015.06.005

分类号:

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

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

ZHU Xin¹, LIU Junyong¹, LIU Yang¹, XIANG Yue¹, ZHU Guojun², DAI Songling², CHENG Siqi¹, TIAN Hao¹

1.School of Electrical Engineering and Information, Sichuan University, Chengdu 610065, China;2.Economic and Technical Research Institute of Sichuan Electric Power Corporation, Chengdu 610065, China

Abstract:

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.

Key words: micro-grid sliding-mode variable structure control power quality unbalanced load control strategy

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