基于MMC的高压直流三极输电技术Modular Multilevel Converter Based Tri-Pole HVDC Power Transmission Technology
俞露杰;赵成勇;
摘要(Abstract):
在借鉴传统高压直流三极输电和模块化多电平换流器型直流输电(modular multilevel converter based high voltage direct current,MMC-HVDC)的基础上,提出基于MMC的高压直流三极输电技术。该技术采用五电平子模块来满足极3直流电压极性和直流电流方向周期性变化的要求。首先分析了五电平子模块的工作模式和闭锁后故障等值电路,而后分析了基于MMC的高压直流三极输电的电流调制策略,设计了MMC相应的控制策略。最后基于PSCAD/EMTDC搭建了基于MMC的高压直流三极输电系统,仿真算例结果验证了该系统的可行性。
关键词(KeyWords): 五电平子模块;模块化多电平换流器;柔性直流输电;高压直流三极输电;交直流转换;电流调制
基金项目(Foundation): 国家863高技术基金项目(2013AA050105)~~
作者(Author): 俞露杰;赵成勇;
Email:
DOI: 10.13335/j.1000-3673.pst.2014.04.003
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