Economic dispatch with piecewise linear incremental function and line loss

This paper proposes a method for calculating the economic generation dispatch for generating units with a piecewise linear incremental cost function, at the same time considering total power loss in transmission lines. The sorted table method is presented to treat the piecewise linear function. For considering the power loss, power loss function and penalty factor are developed to couple with the cost function. Finally lambda iteration method is used to obtain the optimal solution of the economic dispatch problem. The presented method has been tested using a 6 bus system and the solution is given.