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高压电器  2015 

异步联网工程柔性直流换流站过电压与绝缘配合

, PP. 104-108

Keywords: 模块化多电平换流器,柔性直流输电,异步联网,过电压,绝缘配合

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Abstract:

基于模块化多电平换流器(MMC)的柔性直流异步联网换流站过电压与绝缘配合是工程设计的关键技术之一,其研究对换流站关键设备选型、设计、制造和试验具有重要的指导作用。文中依托云南电网与南方主网鲁西背靠背直流异步联网工程开展研究,考虑了系统不同稳态运行状态的组合以及异步交流系统的特点,提出了柔性直流换流站的避雷器布置方案,对系统典型工况进行了仿真计算,确定了各避雷器的最大应力,并最终确定了换流站各设备的绝缘水平。研究结果为工程设计提供了重要依据。

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