Bilateral load following in a restructured power system with local controllers

In restructured power systems, load following is considered to be one among the many ancillary services necessary to support the transmission of electric power. This paper investigates the performance of a load following controller on each generator involved in bilateral contracts. A suitable control strategy is also proposed for the generators taking part in load following to share a portion of the uncontracted power demanded by the customers. Simulation studies carried out on a two-area interconnected power system show that the proposed control schemes are very effective for the generators taking part in load following.