Abstract
The rapid spread of storm floods over large areas requires flood management throughout the river basin by the creation an innovative system of flood control facilities of various functional purposes distributed in the area. The central part of the system is the hydro system with hydro power plant. In addition, the flood control facilities on the side tributaries with self-regulating reservoir are included in the system. To assess the effect of controlling extreme water discharges by flood control facilities, it is necessary to develop special mathematical models reflecting the specifics of their operation. Unified mathematical models of the operation modes of a hydro complex with hydroelectric power station and flood control facility are created. They are implemented in a computer program that provides the ability to determine the main parameters and operating characteristics of hydro systems when performing multivariate calculations in a wide range of initial data. This makes possible specifying the parameters and operation modes of each hydro system with the current economic and environmental requirements, to assess the energy-economic and environmental consequences in the operation of the system of flood control facilities distributed in the area. The article analyses the results of the extreme water discharge’s regulation by the hydro system on the main river and flood control facilities on the side tributaries, considering environmental requirements.
Highlights
In the conditions of the observed trend of global climate changes [1-3] and, changes in the river flow [4-6] an issue of flood management is acute, which requires a new approach of using hydroelectric power plant (HPP) in the flood situation [611]
Test calculations of the joint operation of the hydro complex with HPP and with one of the largest flood control facility on a side tributary of the river showed that the extreme consumption of water entering the reservoir on the main river is reduced by about 10%
This paper is one of the articles in the framework of the grant “Development of the scientific foundations and methods for reducing the risk of flooding by creating a system of flood control facilities distributed in the river basin, considering the requirements of environmental safety”
Summary
In the conditions of the observed trend of global climate changes [1-3] and, changes in the river flow [4-6] an issue of flood management is acute, which requires a new approach of using hydroelectric power plant (HPP) in the flood situation [611]. The task is complicated by the fact that in order to reduce land flooding in the practice of hydropower construction in recent years [24-28], preference has been given to the construction of hydro systems with a relatively small capacity of the reservoir and, with a reduced possibility of regulating river flow. In these conditions, the necessary additional regulating capacity is proposed to be placed on side tributaries of a river, creating flood control facilities with uncontrolled bottom and surface spillways. This will provide flood control throughout the river basin and minimize the damage during the floods [29, 30]
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