IMPLEMENTATION OF NETWORK FLOW PROGRAMMING TO THE HYDROTHERMAL COORDINATION IN AN ENERGY MANAGEMENT-SYSTEM

Hydrothermal Coordination (HTC), consisting of hydro optimization and thermal unit commitment, is a major function in a power system for all ocating its generating resources to achieve the system's maximum econo my. This paper is divided into two major parts. In the first part the optimality conditions of an Incremental Network Flow Programming (INFP ) is described. In the second part the implementation of INFP in an EM S system and its interface with the existing Unit Commitment (UC) soft ware is presented. Some new features are described in detail. The comb ined HTC and UC package has been delivered to a power utility, Tenaga National Berhad (TNB) in West Malaysia. ESCA's internal tests and Fact ory Acceptance Tests have shown that NFP with a modified Superkilter a lgorithm is a powerful tool for hydro network flow optimization.