±320 kV/1000 MW柔性直流输电核心技术研发及应用

Key Technology Research and Application of the ±320 kV/1 000 MW VSC- HVDC

柔性直流输电技术是构成全球能源互联网骨干网架和实现清洁能源并网的重要手段,具有可向孤岛供电、提高风电场低电压穿越能力、能够灵活控制输出功率等优点。介绍±320 kV/1 000 MW柔性直流输电工程换流阀、阀基控制设备和控制保护系统核心技术研发及应用的相关成果,总结和分析换流阀电气、关键零部件优化设计、结构设计及试验技术,介绍换流阀控制、监视和保护系统的总体架构、原理、主要功能及动态模拟试验技术,对控制保护系统的分层架构、系统功能、保护配置及其实时数字仿真试验技术等方面进行全面的分析。±320 k V/1 000 MW柔性直流输电核心技术研发所取得的成果及其在厦门工程的示范应用对我国掌握高压大容量柔性直流关键技术具有重要意义,对进一步提高我国直流电力装备制造水平具有显著的促进作用。

VSC-HVDC transmission technology is an important means to constitute the backbone network of global energy interconnection and realize the integration of clean energy. There are many advantages of VSC-HVDC technology, such as supplying power to an isolated island, improving the low voltage ride through capability of wind power, controlling the output power flexibly, etc. The research, development and engineering achievements of ±320 kV/1 000 MW valve, valve base control equipment and control and protection system are introduced. The valve electrical design, optimization design of valve key components and parts, and the valve structural design and test technology are summarized and analyzed. The overall structure, working principle, main function and dynamic simulation test technology of the converter valve control, monitoring and protection system are also introduced. The control and protection system architecture, system function, protection configuration and real-time digital simulation test technology are comprehensively analyzed. The achievements of ±320 kV/1 000 MW VSC-HVDC key technology research and development and its demonstrated application in Xiamen project are of great significance for China to master the key technology of high voltage and large capacity VSC-HVDC, and obviously promote the DC power equipment manufacturing level in China.