摘要
考虑到现有基于双级矩阵变换器的统一潮流控制器(IMC-UPFC)并联侧无功功率范围的受限问题,提出一种基于模型预测控制(MPC)的IMC-UPFC并联侧无功范围扩展方案。论文推导了IMC-UPFC串联侧线路电流预测模型和并联侧无功预测模型,建立了以控制线路潮流和扩展并联侧无功范围为目标的综合代价函数,通过合理地选取使综合代价函数最小化的IMC的最优开关状态,以达到其控制目标。MPC控制策略具备算法简单及无需额外设置调制规则等优势。两节点网络IMC-UPFC的Matlab/Simulink仿真对比结果表明,所提IMC-UPFC的MPC控制策略有效地扩大了IMC-UPFC并联侧无功范围,进一步证实了该方案的合理性与有效性。
Considering the intrinsic limitations of reactive power range of shunt side for the unified power flow controllers based on indirect matrix converters(IMC-UPFC),a model predictive control(MPC)strategy is proposed to enlarge the reactive power range of the shunt side in this paper. The prediction model of line current for series side and the reactive power of shunt side for IMC-UPFC were deduced, and a comprehensive cost function was formed to control the power flow in the transmission line and extend the reactive power range of shunt side. Then, the optimal switching state of IMC with minimum cost function was synthesized to achieve the control objectives. MPC control strategy has the advantages of simple algorithm and no additional modulation rules. And the Matlab/Simulink simulation results for IMC-UPFC in two-bus network show that the proposed MPC control strategy can effectively enlarges the reactive power range of IMC-UPFC in shunt side, and further proves the rationality and correctness of the scheme.
作者
韩建
李幸
罗德荣
王帅
黄守道
Han Jian;Li Xing;Luo Derong;Wang Shuai;Huang Shoudao(National Engineering Research Center of Energy Conversion and Control Hunan University,Changsha 410082 China)
出处
《电工技术学报》
EI
CSCD
北大核心
2020年第7期1498-1508,共11页
Transactions of China Electrotechnical Society
基金
国家自然科学基金项目(51607063)
中国留学基金项目(201806135013)资助。
关键词
双级矩阵变换器
统一潮流控制器
模型预测控制
并联侧无功扩展
Indirect matrix converters (IMC)
unified power flow controllers (UPFC)
model predi ctive control(MPC)
extending the reactive power range of shunt side
