±800 kV柔性直流换流站换流变区域电气布置研究

  目的]  柔性直流输电技术不断发展，至今已经成为主流的直流输电技术。面对远距离、高电压、大功率的送电需求，±800 kV级特高压柔性直流输电技术的工程应用迫在眉睫。换流变压器作为柔性换流站的核心部分，相关区域的布置方案非常重要，将会对全站整体布置方案产生重要影响。  方法]  基于柔性直流换流站的技术基础，从电气接线、换流变压器布置、换流变广场布置、启动回路布置等方面进行分析，并根据其特点进行优化设计，提出了换流变区域的整体布置方案。  结果]  换流变区域的整体布置方案可靠性高、可实施性强，节约了占地面积和投资成本。  结论]  研究结果对±800 kV柔性直流换流站的工程应用有指导意义，有广泛的工程应用前景。

Research on VSC-UHVDC Converter Station Transformer Area Layout

  Introduction]  With the continuous development of VSC-HVDC technology, it has become the mainstream of DC transmission technology. For long-distance, high voltage, high power demands for power transmission, ± 800 kV VSC-UHVDC transmission engineering applications are imminent. As the core part of the VSC-UHVDC converter station, the layout of the converter transformer is very important and will have a significant impact on the general layout of the whole station.  Method]  Based on the technology of VSC-UHVDC, this paper analyzed single line diagram, the layout of converter transformer, layout of converter transformer square, and the layout of starting circuit. And according to the characteristics, this paper provided a superior design of converter transformer layout.  Result]  The layout is highly reliable and can be implemented, saving the space and investment cost.  Conclusion]  The research is instructive for the engineering application of the ± 800 kV DC converter station and has a wide range of engineering application prospects.