Staged Solution Strategy for Reducing Active Network Loss Based on Transmission Switching

In view of the system active network loss has been neglect while using transmission switching control measures to solve the static problems such as line overloads, voltage violations, the reduce of active power loss is considered as a sub-problem of the above-mentioned static problems, and a staged solution strategy including screening and detailed analysis is proposed in this paper. This methodology firstly uses sensitivity method to screen the pre-switching scheme with high reliability, and then based on Newton-Raphson method to analyze in detail the transmission switching scheme which can meet the requirements of base-case system operation and reduce the active power loss of the system. The performance of the proposed methodology for transmission switching reduce system network loss is tested the IEEE300 node system. The advantages of the proposed methodology in terms of computational efficiency and accuracy are compared and the satisfactory results are obtained.