链式STATCOM补偿不平衡负载分析及控制  

Analysis and Control of Unbalanced Load Compensation Capability of Cascaded STATCOM

作　　者：唐治德[1] 陈伟[1] 罗建[1] 邓明锋 

机构地区：[1]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400030 [2]福建省电力有限公司电力科学研究院,福建福州350000

出　　处：《华南理工大学学报（自然科学版）》2014年第12期120-126,共7页Journal of South China University of Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(51277191)

摘　　要：三角形链式STATCOM在负载不平衡补偿中发挥着重要作用,是提高电能质量的重要手段.文中通过理论分析,推导出三角形链式STATCOM在补偿额定无功电流时负序电流补偿范围的计算方法.针对链式三角型STATCOM分相控制动态响应慢、精确度低的缺点,对三角形链式STATCOM采用分序控制,以实现无功和负序分量的综合补偿.最后在Matlab/Simulink环境中搭建±10 k V·A/(380 V)三角形链式STATCOM对系统进行仿真,仿真结果证明了不平衡补偿范围计算方法及所采用控制策略的正确性.The cascaded STATCOM with delta configuration plays an important role in the unbalanced load compen- sation, and it is an important means to improve power quality. In this paper, through theoretical analysis, a method of calculating the compensation range of negative sequence current is proposed for compensating the rated reactive current by using the cascaded 10kV · A/（380V） STATCOM with delta configuration. As the individual phase con- trol of the cascaded STATCOM with delta configuration shows a slow dynamic response and a low precision, the in- dividual sequence control is adopted to handle the cascaded STATCOM with delta configuration, thus realizing a comprehensive compensation for reactive and negative sequence components. Finally, in the Matlab/Simulink envi- ronment, a 10kV · A/（380 V） STATCOM with delta configuration is built to simulate the system, and the results prove the correctness of the calculation method and the control strategy.

关 键 词：STATCOM 不平衡补偿 计算方法 补偿范围 分序控制 

分 类 号：TM761[电气工程—电力系统及自动化]