Transmission System Reconfiguration to Reduce Losses and Cost Ensuring Voltage Security

Abstract

The aim of this paper is to reduce the losses, total generation cost by switching of transmission line and to maintain voltage security under N − 1 contingency conditions. Generation cost is calculated and the priority list is made for switching the line. The problem is solved by ACOPF using Interior Point Method. In order to test the feasibility and effectiveness of the above method, a sample 6-bus system and IEEE 30-bus system have been used. The impact of switching on system parameter includes the generation cost, locational marginal pricing (LMP) and transmission losses, ensuring voltage security of the system.