东北—华北联网高岭背靠背直流工程动态性能研究

Research on Dynamic Performance of Gaoling Back-to-Back HVDC Project for Interconnection of Northeast China Power Grid with North China Power Grid

东北—华北联网高岭直流输电工程是目前世界上容量最大的背靠背工程。为了验证和评估直流系统的动态响应性能,专题开展了高岭直流输电工程的动态性能研究工作。文中以2008年冬季大负荷方式作为研究的基本方式,仿真分析了直流控制系统的小信号稳定性和暂态响应,以及交流系统和直流系统发生严重故障时控制系统的响应性能。结果表明高岭背靠背直流输电系统具有良好的动态特性。

The Gaoling back-to-back HVDC power transmission project for the intercormection of Northeast China power Grid with North China power Grid is the back-to-back project with the highest capacity up to now in the world. To verify and evaluate the dynamic response performance of HVDC system, as a special topic, the dynamic performance of Gaoling HVDC power transmission project is researched. In this paper, taking the high load mode in the winter of 2008 as the basic operation mode to be researched, the small signal stability and transient response of HVDC control system as well as the response performance of control system under severe accident occurred in AC and DC system are simulated and analyzed. Simulation results show that the Gaoling back-to-back HVDC power transmission project possesses good dynamic characteristic.