柔性直流输电换流器子模块程序远程升级研究与应用

Research and Application of Program Remote Upgrade for Sub-modules in VSC-HVDC Converter

介绍了柔性输电领域的模块化多电平换流器及其控制系统架构,分析了换流器子模块的工作原理和子模块控制器的软件功能。针对工程现场需要升级程序的困难,提出了一种可以在换流器上使用的远程升级方法,研究了其硬件架构、换流器在启动过程中的程序升级方法和流程,分析了程序升级的安全可靠性,并在配套的多端动模实验系统上验证实施。

Modular nmltilevel converter （MMC） has been widely applied in the VSC-HVDC （voltage source converter-high voltage direct current transmission） field. In MMC application, it is very difficult to upgrade the program of the sub-modules of MMC. The structure of VSC-HVDC control system and sub-module of MMC is described, the program function of sub-module controller is analyzed. A method of program remote upgrade for MMC is introduced, the design of main hardware modules and software flowchart of the program upgrading system is presented. Safety and reliability evaluation of program remote upgrade for MMC is also described. This work is applied and verified based on dynamic simulation experiment platform for MMC research.