MODELING OF FLOW IN RIVER AND STORAGE WITH HYDROPOWER PLANT, INCLUDING THE EXAMPLE OF PRACTICAL APPLICATION IN RIVER DRINA BASIN

Goal of the mathematical modeling and simulation of a physical system is to provide the user with the relevant information used in design and/or management decision-making. Spatial decomposition formulates the mathematical models of water flow with the parameters and rules describing the water route. Calculation of the inlet hydrograph transformation along the river section and storage was exercised by virtue of the hydrological methods that are actually a simplified solution of the fundamental differential equations of flow. Calculation of discharge through hydro-technical structures, such as spillways, foundation outlets etc., are shown in hydraulic equations or water level-discharge relations. Storage management includes direct or indirect planning of the hydropower plant operation, as well as meeting other water management requirements. Hydropower plant work plan can be created on the basis of water level management in the storage or desired electricity generation. Efficient numerical algorithms provide for processing of input event series and initial values that describe the state in the river and storage, resulting in the series of events on all important locations of the physical system. An example illustrates the application of the mathematical models of flow in the river, wave transformation in the storage and electricity generation calculation. The example covers the part of the River Drina basin between the profiles of “Zvornik” HPP and “Bajina Bašta” HPP.