Switching sequence modelling for network reconfiguration

Transmission switching as a powerful tool is utilized to change network topology during operations which, in turn, would lead to higher economic benefits of a power system. However, network reconfiguration includes a chain of time sequencing switching actions which can bring disturbances into systems. This paper proposes a model addresses the process of transmission switching. The objective is to minimize the time of network reconfiguration via appropriate arrangements of the switching sequences, switching time intervals and corresponding generation outputs under system operating limits and security constraints conditions. The proposed model is demonstrated on the IEEE 118-bus test system. Computational results show the importance and necessity of proper arrangements of switching sequence.