基于恢复路径转移系数的电网黑启动分区策略

Black-start Network Partitioning Based on the Restoration Path Altering Coefficient

在电网发生大停电之后对系统进行合理分区可以缩短系统的整体恢复时间,加快恢复进程。文中对黑启动分区进行了研究,提出了一种基于路径转移系数的分区优化方法。该方法考虑恢复过程中设备投运失败的可能性,在选择恢复路径的过程中建立了基于转移路径系数的评价函数,以此评价函数作为分区指标对系统进行分区。在考虑电力系统运行方式的基础上建立了分区的优化目标函数,并采用交叉粒子群优化算法实现分区恢复优化问题。本文以IEEE118节点系统为例验证了模型和算法的有效性。

Reasonable network partitioning schemes for black start restoration after large scale blackout of a power system can increase the restoration efficiency and shorten the duration of the restoration process.In this paper,a network partitioning method for black-start restoration is proposed by establishing an index of path altering flexibility as the evaluation function to find the optimal path from a node to be restored to the restored system,considering the possibility of operating failure of the relevant equipment.An objective function for partitioning optimization is established considering the operation condition of the power system,and the cross particle swarm optimization algorithm is employed to solve the optimization problem of the partitioning schemes.The numerical results on the IEEE 118 power system verify the effectiveness of the proposed method.