MODELING THE OPERATION OF A HYDRO–ACCUMULATING POWER PLANT IN THE PUMP MODE AT POWER SUPPLY FROM THE WIND POWER PLANT

• Date: 2019
• Main Author: Verbovij, А.
• Format: Article
• Language: Ukrainian
• Published: Institute of Renewable Energy National Academy of Sciences of Ukraine 2019
• Subjects: pumped hydroelectrical station; centrifugal pump; speed; frequency; voltage; current.
• Online Access: https://ve.org.ua/index.php/journal/article/view/231
• Journal Title: Vidnovluvana energetika

As the installed capacity of renewable energy sources on the basis of solar and wind power plants increases, the need for backup power sources increases. The serious disadvantages of renewable energy sources, which limit their widespread use, include the low density of energy flows and their variability over time. In particular, this factor influences the production of electricity by wind and photo power plants: the schedule of energy production is probabilistic. The source of the shunting power may be a pumped hydro electrical station. Hydropower plants for a long time have proven themselves to be relatively simple and reliable with maximum maneuverability - fast dialing and load relief, a large range of regulation. A simulation model of a pumped hydroelectrical station for powering an induction motor of a centrifugal pump from a wind turbine with an induction generator is developed. The known model is a wind turbine with an asynchronous generator in the composition of a wind-driven diesel system in an isolated electrical network, which was supplemented by an induction motor, switches, a centrifugal pump, connecting pipelines, tanks, sensors and devices for displaying the necessary characteristics. The model is implemented in the modern mathematical package MATLAB. The advantages and disadvantages of an induction generator are determined on the basis. With the help of the created model, theoretical studies of the work of a wind turbine with an induction generator were carried out using a stochastic component of wind speed. The influence of the stochastic component of wind speed on the output parameters of an induction generator, such as speed, frequency, voltage, current, are analyzed. Studies of an induction motor with load from a centrifugal pump in dynamic and quasi-static modes were also carried out. Ref. 25, fig. 6.