Multireservoir Simulation Using Multipurpose Constraints and Object-Oriented Software design

The hydroelectric short term planning is quite challenging in order to respect all the operational restrictions concerned with hydropower generation. A detailed simulation model combining multipurpose constraints and object-oriented software design is presented for short term decision support. The object-oriented design permits a mathematical structure that divides the decisions tasks from the regular hydroelectric computation. The main operational policy allows users to validate a hydro generation schedule towards an inflow forecasting. In other words, the simulator can accept hydro generation as data input and convert it to water flow variables (turbines discharge and spillage), using the inflow forecast and the initial reservoirs storage. The water balance equation, hydro generation and efficiency calculation modules are synchronized with the state-of-the-art of multireservoir operation. As an important result, this simulator can automatically correct the input data of the operational policy, saving substantially time into decision-making process. A test problem on 94-reservoir from Brazilian Integrated Hydropower Generation System was simulated over an hourly one-week horizon with fine performance, evidencing the simulation model capabilities against large scale hydropower operation problem.