特高压直流输电控制保护系统实时仿真技术的研究及应用

采用模拟高压直流输电一次系统的RTDS平台与直流工程的实际控制装置相结合的方法,实现直流工程的仿真验证平台的搭建,存在占地面积大、接线复杂的问题。提出了一种直流输电控制保护系统实时仿真的技术。使用Matlab/Simulink图形化的方式一比一搭建直流控保程序,通过代码转换及多线程优化调度方案将图形化程序转变为CBuilder代码文件,构建高集成度的RTDS自定义元件,只需采用单个RTDS计算单元实现了整个直流工程换流站的控保程序计算。在RTDS仿真平台上对所提出的技术进行了验证,试验结果表明该技术有效、可行。该仿真技术使交直流混联大电网的实时仿真问题变得更加经济、高效。

Research and application of real-time simulation technology for UHVDC control and protection system

By combining RTDS platform of HVDC primary system with actual control device of HVDC project, the simulation and verification platform of HVDC project is built, which has the problems of large area and complex wiring. A real-time simulation technology for HVDC transmission control and protection system is proposed. And the HVDC control and protection program is built one by one by using the graphical method of Matlab/Simulink. Then the graphical program is transformed into a CBuilder code file through code conversion and multi-threaded optimal scheduling scheme, and a highly integrated RTDS custom component is constructed. Only one single RTDS computing unit is used to realize the calculation of control and insurance program of the whole HVDC project converter station. The proposed technology is validated on RTDS simulation platform, and the experimental results show that the technology is effective and feasible. The simulation technology makes the real-time simulation of AC/DC hybrid power grid more economical and efficient. This work is supported by National Key Research and Development Program of China (No. 2016YFB0900600).