Optimal Anti-Icing and De-Icing Coordination Scheme for Resilience Enhancement in Distribution Networks Against Ice Storms

Abstract

Ice storms can cause serious damage to power distribution systems, thus the development of effective anti-icing and de-icing strategies is of great significance. In this article, an optimal anti-icing and de-icing coordinated operation scheme is proposed to enhance the resilience of distribution systems against ice storms, which is based on the ice-melting capacity of distribution lines. Firstly, a comprehensive risk analysis for anti-icing and de-icing in ice storms is provided. Then, a novel critical condition for anti-icing initiation is proposed based on the weather forecast deviation and potential load loss in distribution systems. On this basis, the coordinated optimization model for anti-icing and de-icing in distribution networks with intelligent soft open point and energy storage systems is established, aims at minimizing the overall load loss. Considering the double risk of overloading anti-icing and de-icing methods, the power flow limit violation function is used in the optimization model to reasonably allocate the proportion of various risks. Finally, the proposed method is verified in the IEEE 33-node distribution network.