Load restoration of electricity distribution systems using a novel two-stage method

This paper proposes a new comprehensive load restoration (LR) method for electrical distribution networks. Since two main technologies of switching equipment are there in the modern distribution networks, namely manual switches (MSs) and remote-controlled switches (RCSs), this article has benefited from this concept effectively. A two-stage algorithm that provides the system operators with the ability to recover part of the loads in the shortest possible time by RCSs is proposed. After this step, the remaining loads will be restored by a combination of MSs and RCSs. The other strength of this algorithm is to provide accurate and practical solutions so that the sequence of switching actions is clearly defined. Also, using an innovative index called expected weighted energy not supplied as the objective function of the main problem will ensure the operators recover the maximum amount of load in the shortest time possible. This novel method was applied on a sample standard IEEE distribution test network. The simulation results proved the effectiveness of this proposed method. A two-stage algorithm to achieve optimal, accurate, and applicable solutions for SR in distribution networks. Many important considerations include the time of occurrence of the failure and the daily load curve of the network, the position of the maintenance team, the load transfer capability as well as the traffic conditions. image