| 引用本文: | 韩 坤,吴金龙,刘欣和,张 建,姚为正.大规模多节点模块化多电平柔性直流输电换流阀控制周期优化设计方法[J].电力自动化设备,2015,35(1): |
| HAN Kun,WU Jinlong,LIU Xinhe,ZHANG Jian,YAO Weizheng.Optimized design of converter valve control period for large-scale multi-node MMC-based HVDC-flexible[J].Electric Power Automation Equipment,2015,35(1): |
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| 摘要: |
| 提出了换流阀控制周期的优化设计方法。基于模块化多电平换流器（MMC）的工作原理、控制架构和调制方式，提出影响换流阀控制性能的3个关键指标，分别为换流阀输出电平数、直流电压波动、阀解锁初始电流冲击；理论分析了其对换流阀控制周期的定量约束，并通过仿真与试验验证了理论分析的正确性，最后得出同时满足这3个指标的最大控制周期作为换流阀控制周期的最优设计值，并给出了工程应用算例。 |
| 关键词: 直流输电； 柔性直流输电；多节点；模块化多电平换流器；换流阀；控制 优化；设计 |
| DOI： |
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| 基金项目:基金项目：国家高技术研究发展计划（863计划）资助项目（2012AA-050206） |
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| Optimized design of converter valve control period for large-scale multi-node MMC-based HVDC-flexible |
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HAN Kun1, WU Jinlong2, LIU Xinhe2, ZHANG Jian1, YAO Weizheng3
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1.Xu Ji Electric Co. Ltd.，Xuchang 461000，China;2.Xi’an Xu Ji Power Electronic Technology Co. Ltd.，Xi’an 710000，China;3.Xu Ji Group Co. Ltd.，Xuchang 461000，China
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| Abstract: |
| A method of optimized control period design is proposed for the converter valve control equipment used in large-scale multi-node HVDC-flexible based on MMC（Modular Multilevel Converter）. According to the working principle，control architecture and modulation modes of MMC，three key indicators influencing the control performance of converter valve are proposed：the number of valve output level，the DC voltage fluctuation and the initial surge current during valve unlocking. Their quantitative constraint on the converter valve control period is theoretically analyzed，which is verified by simulations and experiments. The result of optimized design is the maximum valve control period which satisfies three indicators simultaneously. An example of its engineering application is given. |
| Key words: DC power transmission HVDC-flexible multi-node modular multilevel converter converter valve control optimization design |
