Transmission Line Switching For Loss Reduction And Reliability Improvement

This paper describes the reduction in losses and improvement in reliability with the transient and permanent outage of lines in transmission system. Each line switching is carried out for minimum loss results followed by load flow to get the objective of paper. All the buses are constrained by constant active power except the slack bus, so marginal losses under switching will be supplied through slack bus. Power system component under repair considered as permanent outage and transient outages are for short duration. Switching rate for permanent outages will be minimum because it is replaceable but not in transient outage. Reliability is observable key for both the outages. Capacity Outage is used to evaluate the transmission system reliability parameter Expected Energy Not Supplied (EDNS) under load curtailments at the buses.