新型混合级联多电平换流器型静止同步补偿器的设计  

Research and Design of A Novel Hybrid Cascaded Multilevel Converter Based STATCOM

作　　者：杜翼[1] 江道灼[1] 林志勇[2] 周月宾[1] 尹瑞[1] 王玉芬[1] 梁一桥[1] 

机构地区：[1]浙江大学电气工程学院,浙江省杭州市310027 [2]国网湖南省电力公司电力经济技术研究院,湖南省长沙市410004

出　　处：《电网技术》2014年第11期3146-3152,共7页Power System Technology

摘　　要：构建了新型混合级联多电平换流器(hybrid cascaded multilevel converter,HCMC)型静止同步补偿器(static synchronous compensator,STATCOM)(即HCMC-STATCOM)的拓扑结构,并分析其工作原理,对两电平换流器直流电压和整形电路H桥子模块个数进行了优化设计。为实现两电平换流器和整形电路的协调控制及电容电压稳定控制,研究了两电平换流器和整形电路的调制策略,并提出了一种有效的控制方案。在PSCAD/EMTDC仿真平台上搭建了35 k V/±100 Mvar HCMC-STATCOM仿真模型,仿真结果表明了HCMC-STATCOM拓扑结构及其工作原理的可行性和控制方案的有效性。The topological structure of a novel hybrid cascaded multilevel converter（HCMC） based static synchronous compensator（STATCOM）,namely the HCMC-STATCOM,is constructed and its working principle is analyzed,and the optimization design of the DC voltage of two-level converter and the number of H-bridge submodules of the wave-shaping circuit（WSC） is carried out.To implement the coordinated control of two-level converter with WSC and the stable control of capacitor voltage,the modulation strategy for two-level converter and WSC is researched,and an effective control scheme is put forward.On PSCAD/EMTDC based simulation platform a simulation model for 35 kV HCMC-STATCOM with capacity of ±100Mvar is set up,and simulation results show that both the topological structure and the working principle of the proposed HCMC-STATCOM are feasible,and the proposed control scheme is effective.

关 键 词：混合级联多电平换流器 静止同步补偿器 拓扑结构 控制方案 建模仿真 

分 类 号：TM721[电气工程—电力系统及自动化]