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以增加发电机有功出力和投入负荷作为控制变量,计及待恢复负荷的重要性,建立了减小环网并列线路两端过大电压相角差的混合整数规划模型。基于二分法原理使参与调整的发电机数量最小,提出了系统恢复中环网并列合闸角最优调控算法。在该算法中,参与调整的发电机数量少且有功出力调整量小,在较短时间内达到环网并列条件的同时,能够协调恢复部分重要负荷。新英格兰10机39节点算例系统仿真验证了该算法的有效性。
In order to increase generator active output and input load as control variables, and to consider the importance of load to be restored, a mixed integer programming model was established to reduce the phase angle difference between excessive voltages across the ring network. Based on the principle of dichotomy, the number of generators involved in the adjustment is minimized, and the optimal regulation algorithm for the parallel closing angle of the ring network in the system recovery is proposed. In this algorithm, the number of generators involved in the adjustment is small and the amount of active power output adjustment is small, and the parallel condition of the ring network can be reached within a relatively short period of time, and some important loads can be coordinated and recovered. New England 10-machine 39-bus system simulation shows the effectiveness of the algorithm.