中南大学学报（自然科学版）Issue(1)：123-129,7.DOI:10.11817/j.issn.1672-7207.2016.01.018
基于双层优化结构的统一潮流控制器阻尼控制策略
Damping control strategy for UPFC based on two-layer optimization structure
摘要
Abstract
Damping controller of unified power flow controller (UPFC) may degrade its damping performance or even cause power system instability when its stabilizing signal is delayed for a certain period. Based on the newly constructed UPFC damping control model with signal transmission delay, UPFC damping control strategy design problem was discussed by taking into account of damping ratio and delay margin. The design problem was converted to a constrained optimization problem and then a two-layer optimization structure algorithm (TLOSA) was proposed to solve it. In TLOSA, delay margin was solved by free-weight matrix based linear matrix inequality (LMI) method for inner layer and optimal damping control strategy was searched by particle swarm optimization for outer layer. The results show that the proposed algorithm has low conservativeness and is easy to be implemented. The proposed algorithm can obtain optimal UPFC damping control strategy which ensures that power system can damp low frequency oscillation effectively and tolerance a certain signal transmission delay.关键词
统一潮流控制器/时滞系统/灵活交流输电系统/辅助阻尼控制器/粒子群优化算法Key words
unified power flow controller (UPFC)/time-delay system/flexible AC transmission systems (FACTS)/supplementary damping controller/particle swarm optimization分类
信息技术与安全科学引用本文复制引用
李婷,杨波..基于双层优化结构的统一潮流控制器阻尼控制策略[J].中南大学学报（自然科学版）,2016,(1):123-129,7.基金项目
国家自然科学基金资助项目(51007042,51577136)；湖南省教育厅科研项目(14C0782)(Projects(51007042,51577136) supported by the National Natural Science Foundation of China （51007042,51577136）
Project(14C0782) supported by the Scientific Research of Education Department of Hunan Province) （14C0782）
