HVDC系统中MMC换流器控制策略研究  

Research on Control Strategy for MMC Converter in HVDC System

作　　者：曹乐萌 赵巧娥 高金城 李奕凯 CAO Lemeng ZHAO qiaoe GAO Jincheng LI Yikai(Department of Electric Power Engineering, Shanxi University, Taiyuan 030013, China State Grid Yangquan Power Supply Company, Yangquan 045000, China)

机构地区：[1]山西大学电力工程系 [2]国网山西省电力公司阳泉供电公司

出　　处：《智慧电力》2017年第10期31-36,共6页Smart Power

摘　　要：针对模块化多电平换流器动态跟踪性能和均压控制方面的研究与优化,首先建立了MMC的数学模型,通过引入内模控制与比例积分控制完成了其双闭环控制器的设计,然后基于最近电平逼近控制用快排Partition算法优化了电容电压均衡控制方法。最后在Matlab/Simulink中搭建两端MMC-HVDC模型进行仿真,结果表明所提出的控制策略具有良好的动态性能和鲁棒性,并且能够在均压的同时提高排序效率。For studying and optimizing the dynamic tracking performance and voltage balance control of modular multilevel converter （MMC）, the paper first establishes a mathematical model of MMC, and designs the double closed loop controller by introducing internal model control and proportional integral control. Then the paper optimizes the capacitor voltage balance control method based on the nearest level control quick sorting Partition algorithm is used to optimize. Finally, the paper establishes MMC-HVDC model in MATLAB/Simulink. The simulation resuhs show that the proposed control strategy has good dynamic performance and robustness, and can improve sorting efficiency while capacitance voltage balancing.

关 键 词：模块化多电平换流器 内模控制 比例积分控制 电容均压 快排Partition算法 

分 类 号：TM721.1[电气工程—电力系统及自动化]