闽-台电网异频率直流互联的可行性研究

Feasibility Study of Different Frequency DC Interconnection of the Power Grid between Fujian and Taiwan

高压直流输电的超远距离、超大容量和低损耗的送电能力,使其成为电力电子应用技术最为活跃和重要的研究领域之一。对利用直流电缆输电,实现闽台电网的不同频率互联,增强电网的稳定性,保障闽台电网安全运行进行了研究后,得出的闽台直流联网系统应包括换流站、整流逆变站、接地极与接地极线路等。拟在福州和厦门建设两个换流站,使用两回路海底电缆连通台北和高雄换流站,实现相互送电,此研究对海底直流联网具有实际意义。

HVDC transmission has the transfering ability of long distance,super capacity and low loss which makes power electronics application technology one of the most active& important research fields.This paper studies how to use DC cable transmission to realize different frequency inter-connection of Fujian &Taiwan power grid to enhance the stability of the power grid and guarantee the safe operation of Fujian and Taiwan power grid.This paper lists the structure of dc transmission system based on the submarine cables,introduces the converter stations,rectifier inverter station,grounding electrodes and grounding electrode lines.Two converter stations are to be built in Fuzhou and Xiamen which use double-loop cable to connect the converter stations in Taibei and Gaoxiong to achieve mutual transmission & promote economic ties between Fujian & Taiwan.