一种基于功率转移系数的交直流混联受端电网切负荷方案配置方法

摘要

In hybrid AC/DC receiving-end grid,power shortage and power transfer would occur after DC blocked faults,and it could cause chain faults.A load shedding scheme configuration method is proposed through analysis of power transfer coefficient of DC or load shedding buses and AC transmission lines,along with consideration of load importance factor.The simulation results for a hybrid AC/DC receiving-end grid in Zhejiang power grid proves feasibility and effectiveness of proposed method.%针对交直流混联受端电网在直流发生闭锁故障后,会产生功率缺额,而潮流转移过程中可能造成交流通道过载,引发连锁故障的问题,提出了一种切负荷方案配置方法.通过分析直流系统及切负荷点与不同交流通道之间的功率转移系数,并综合考虑不同负荷的重要性对其进行修正,得到满足限制条件的优化切负荷方案在浙江电网系统中进行了仿真验证,结果证明了所提方法的可行性和有效性.