电网黑启动情况下高压直流输电系统启动条件分析

目前各电网的黑启动方案中,均未考虑在黑启动初期的直流启动.文中以天广直流为例,在PSCAD/EMTDC电磁暂态仿真软件中搭建了交、直流系统仿真模型,利用该模型研究了在电网黑启动初期直流的启动方式和条件.提出了采用绝对短路容量和有效惯性时间常数作为表征交流系统强度的指标.通过分析可知,当两侧交流系统都满足短路容量为单组滤...

Analysis on Start-up Conditions of HVDC System in Black-start

At present,the start-up of HVDC has not been considered at the initial stage of black-start in China.How to build the models of the AC system and HVDC with PSCAD/EMTDC is introduced,and then the start mode and start-up conditions of the HVDC in the initial stage of black-start are studied by the models.Two indices to measure the intensity of the AC system are proposed as the absolute short-circuit capacity and effective inertia constant.The HVDC can start-up in the monopolar constant current control startin...