| 引用本文: | 付 艳,黄金海,吴庆范,等.基于MMC多端柔性直流输电保护关键技术研究[J].电力系统保护与控制,2016,44(18):133-139. |
| FU Yan,HUANG Jinhai,WU Qingfan,et al.Key technologies research based on multi-terminal MMC-HVDC protection[J].Power System Protection and Control,2016,44(18):133-139 |
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| 摘要: |
| 基于MMC的多端柔性直流输电是直流输电的重要发展方向。对MMC多端柔性直流输电控制保护系统进行了研究，介绍了一种基于子模块电容电压优化平衡控制算法的控制策略，详细给出了柔性直流输电系统保护配置，对阀侧交流母线差动保护策略和换流器区保护策略等保护关键技术问题进行深入研究，给出了具体的解决策略。并搭建了多端MMC-HVDC仿真试验系统验证控制保护研究策略，详细分析了阀侧交流母线两相短路接地故障和换流器上桥臂短路故障仿真结果。所研究内容对多端MMC-HVDC工程的研究和发展有重要的借鉴意义。 |
| 关键词: 电压优化平衡 阀侧交流母线差动保护策略 换流器区保护策略 多端MMC-HVDC 仿真试验系统 故障仿真结果 |
| DOI：10.7667/PSPC151706 |
| 分类号: |
| 基金项目:河南省重大专项项目“高压大容量柔性直流输电装备关键技术研究及产品研制”;国家电网公司科技项目“±500 kV柔性直流电网超高速保护关键技术研究”。 |
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| Key technologies research based on multi-terminal MMC-HVDC protection |
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FU Yan,HUANG Jinhai,WU Qingfan,FAN Ziqiang,XU Pengjian,LU Mingming,FAN Xuefeng
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(XJ Electric Co., Ltd., Xuchang 461000, China)
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| Abstract: |
| The flexible multi-terminal HVDC based on MMC is an important development direction of HVDC. This paper researches the control and protection system of flexible HVDC based on MMC. It introduces one control strategy based on sub-module capacitor voltage optimization of balance control algorithm and provides the protection configuration of flexible HVDC system in detail. The key technical problems of protection including the strategy of valve side AC busbar differential protection and inverter area protection are researched further. And a specific solution strategy is provided. A multiterminal MMC-HVDC simulation test system is set up to examine control and protection strategy. Then it analyzes the fault simulation results of two-phase connected to ground in valve side AC busbar, and the short circuit in inverter up bridge arm. The research in this paper has important significance for the research and development of multiterminal MMC-HVDC project. |
| Key words: voltage optimization balance strategy of valve side AC busbar differential protection strategy of inverter area protection multiterminal MMC-HVDC simulation test system fault simulation results |
