| 引用本文: | 罗 程,赵成勇,张宝顺,倪晓军,翟晓萌,郭春义.MMC控制系统时序逻辑与子模块故障监测[J].电力自动化设备,2015,35(5): |
| LUO Cheng,ZHAO Chengyong,ZHANG Baoshun,NI Xiaojun,ZHAI Xiaomeng,GUO Chunyi.Sequential logic and sub-module fault detection of MMC control system[J].Electric Power Automation Equipment,2015,35(5): |
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| 摘要: |
| 对模块化多电平换流器（MMC）采用站级控制器、子模块控制器（SMC）和阀基控制器（VBC） 3层控制系统。设计了SMC与VBC之间的时序逻辑，保证了控制系统的实时性。当硬件模拟电路检测到子模块出现过电压或者欠电压时，如果过电压或者欠电压时间超过20 μs，则SMC将故障信息传送至上层控制，有效降低了保护系统误动的概率。对采用了上述控制系统的MMC物理模拟系统进行了稳态实验，实验结果表明，系统能够有效控制直流电压、输送功率，并使子模块电压稳定在150 V左右。 |
| 关键词: 模块化多电平换流器 换流器 物理模拟系统 控制系统 时序逻辑 子模块故障 |
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| 基金项目:国家自然科学基金资助项目（51177042）；国家高技术研究发展计划（863计划）资助项目（SS2013AA050105） |
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| Sequential logic and sub-module fault detection of MMC control system |
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LUO Cheng, ZHAO Chengyong, ZHANG Baoshun, NI Xiaojun, ZHAI Xiaomeng, GUO Chunyi
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State Key Laboratory for Alternate Electrical Power System with Renewable Energy Sources，North China Electric Power University，Beijing 102206，China
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| Abstract: |
| A three-layer control system consisting of the station controller，SMC（Sub-Module Controller） and VBC（Valve Base Controller） is applied to MMC（Modular Multilevel Converter）. The sequential logic between SMC and VBC is designed to guarantee its real-time performance. In order to effectively reduce the malfunction probability of protection system，only the information of a sub-module overvoltage or undervoltage fault，which is detected by the hardware analog circuit for more than 20 μs，is sent to the superordinate controller by SMC. A steady-state experiment of the proposed control system is carried out in a physical MMC simulation system and the results show that it controls the DC voltage and transmission power effectively and keeps the sub-module voltage around 150 V. |
| Key words: modular multilevel converter electric converters physical simulation system control system sequential logic sub-module fault |
