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of measures for intra-day of regulating incoming water flow rates from the Nizhny Novgorod HPP and their discharge through the spillway of the Nizhny Novgorod low-pressure hydroelectric complex requires a specific algorithm for dispatcher Научные проблемы водного транспорта / Russian Journal of Water Transport No66, 2021 154 actions of the created hydraulic system. At the same time, there are serious difficulties in predicting the water regime in time. As previous studies have shown there is a large unevenness and irregularity of water discharges not only during one day, but also in the same periods of every day, as well as week, month, and year. Тhis article analyzes the boundary conditions when introducing measures of regulating runoff, develops a mathematical model and an algorithm for solving the problem of intraday regulation, describing the sequence of actions for solving the problem of "smoothing" the flow rates supplied to the lower stream of the Nizhny Novgorod low-pressure hydroelectric complex. The implementation of the proposed measures is carried out according to a three-stage (or two-stage) schedule for regulating the flow rate and water level. The proposed measures will improve the hydraulic and hydrological conditions of the downstream reach of the Nizhny Novgorod low-pressure hydroelectric complex by which the necessary depths for navigation will be created. Conditions have also been made to mitigate erosion processes

naučnye problemy vodnogo transporta

Mathematical model and algorithmic process of solving the problem of the intra-day regulation of discharge of water through the Nizhny Novgorod low-pressure hydroelectric complex