±1000kV特高压直流在我国电网应用的可行性研究

Feasibility of ± 1000 kV Ultra HVDC in the Power Grid of China

根据我国电网特点和特高压交直流建设情况,探讨了±1000kV特高压直流在我国电网发展中应用的可行性。在考虑设备制造能力的基础上,分析了±1000kV特高压直流的基本配置方案和经济性,并从多个角度分析±1000kV特高压直流对系统安全稳定的影响,具体包括接入系统方式、对送端和受端系统稳定性的影响以及多直流馈入问题等。最后,文章给出了±1000kV特高压直流发展需解决的技术问题,并对发展前景进行了展望。

According to the power system characteristics and ultra-high Voltage AC/DC system construction in China, this paper discusses the application and feasibility of ±1000kV ultra-high voltage DC （UHVDC） in the power grid of China. Based on the ability of industrial manufacture for UHVDC equipment, the basic scheme of UHVDC and economical advantages are analyzed. From different points of view, this paper analyzes the influence of UHVDC on the security and stability of power system, including UHVDC connection pattern, influence on the stability of both rectifier and inverter side AC system, and problems of multi-infeed HVDC. Finally, this paper recommends technological problems which need to be solved, and the prospect of the ±1000kV UHVDC application in China.