Critical Node Identification Method of Power Grid Based on the Improved Entropy Weight Method

It is very important to accurately identify the critical nodes of power grid for its safe and stable operation. In this paper, a method identifying based on improved entropy weight (IEWM) proposed, IEWM corrects issues with information overlap between evaluation indices inconsistency (EW) value (EV). First, considering topology operating conditions, structural factor state are established. On basis, used assign weights different voltage levels, which strengthens consideration node levels in identification makes results more accurate effective. Simulation experiments IEEE 30-bus 118-bus systems verify accuracy proposed paper.