大型受端城市电网黑启动电源规划研究

Research on Black Start Power Source Planning in Large City Received-End Power Grid

广州电网负荷密集,交直流混联运行特性复杂,局部故障引发大面积停电风险日益凸显。以恢复重要用户供电和尽快启动近区主力电厂为目标,提出了黑启动电源布局规划的基本原则。给出了表征恢复速度的黑启动恢复级数实用化指标,探索了常规气电机组、现有机组加装储能、煤电机组FCB改造及柔直背靠背互联等4种方式的黑启动电源规划方案,并评估了“十四五”期间广州电网的黑启动能力,对指导大型受端城市电网黑启动电源规划具有一定的借鉴意义。

Guangzhou is the larger load center in the power grid,the AC/DC hybrid operation characteristics are complex,and the risk of large-area power outage caused by local fault is increasingly prominent.To restore the power supply of important users and start the main power plants in the near area as soon as possible,the basic principles of black start power planning are proposed.The fault recovery steps index of black is given,representing the recovery speed.Four types of black start power planning schemes are explored,including conventional gas turbine units,existing units with energy storage,FCB transformation of coal-fired power unit and back-to-back VSC HVDC interconnection.The black start capability of Guangzhou Power Grid during the"14th five year plan"period is evaluated,which has certain reference significance for guiding the black start power planning of large receiving end city power grid.