Optimal Long Range hydro Scheduling in the Integrated Power System

The integrated power system which includes fossil fired, nuclear and hydro units has need for a planning model suitable for minimizing system energy costs over a specific time period in the long range time frame. This paper presents such a model. Predicted partial and total forced outages, scheduled down time for various unit maintenance activities, cost of operation for various valve loadings and stochastic river flow data are inputs to a program which yields hydro energy scheduling for most economic loading over the time frame.