A real-time innovative scheme for power losses calculation

In the deregulated electricity market, electric utilities aim to satisfy the electricity demand and simultaneously to increase their profit. In order to satisfy both objectives, electric utilities should provide electricity reliably to the customers in a cost effective way. In this paper an innovative scheme for accurately calculating the power losses of the system in quasi real time will be presented. In particular, the outputs of an extremely accurate state estimator are used for updating the loss coefficients in consecutive time intervals during the day. Then, the calculated losses are used in the economic dispatch tool for dispatching economically both losses and load changes to the available generators. The proposed methodology is tested using the IEEE 30 and 118 bus systems.