特高压直流输电工程可行性研究主要技术原则

特高压直流输电工程输送容量巨大、输电距离遥远、电压等级进入特高压范畴,对电网规划建设和安全稳定运行影响深远,对工程建设条件要求更高。根据特高压直流输电工程不同于常规直流输电工程的特点,总结归纳世界上第1批特高压直流输电工程可行性研究工作,就可行性研究阶段输电方案拟定、换流站站址及接地极极址选择、线路路径选择以及系统方案比较等主要技术原则,分析特高压直流输电工程可行性研究中应注意把握的主要技术内容。

The main technical principles of feasibility studies on UHVDC transmission projects

Compared with common electric power transmission projects, UHVDC transmission projects have a great influence on planning, construction and stable operation of electric networks, and require strict conditions of constructions because of greater transmission capacity, widely transmission distance and higher voltage class. According to the characteristics of UHVDC transmission projects, which are different from conventional UHVDC transmission projects, the feasibility studies of the first batch of UHVDC transmission projects on the world were summarized. The main technical principles and contents of the feasibility studies for UHVDC transmission projects, such as the power transmission scheming at feasibility study stage, selections of converter station site and earth electrode site, line route option and comparison of system schemes, etc., were researched and analyzed.