MODELING OF POWER BALANCE IN THE COMBINED SYSTEM WITH RENEWABLE ENERGY

• Дата: 2021
• Автор: Kuznietsov, М.
• Формат: Стаття
• Мова: Ukrainian
• Опубліковано: Institute of Renewable Energy National Academy of Sciences of Ukraine 2021
• Теми: combined power system; renewable energy; simulation model; power balance; random process.
• Онлайн доступ: https://ve.org.ua/index.php/journal/article/view/295
• Назва журналу: Vidnovluvana energetika

The purpose of the paper is the possibilities of estimating the expected balance of capacities in the combined power system. A feature of the combined local system with solar and wind power is the random fluctuations of current capacity due to changes in weather factors. Means such as energy storage and auxiliary local generators are used to balance electricity generation and consumption. The object of research is hybrid power systems that have the properties of a local grid. The elements of the system are wind and solar power plants, power balancing devices, as well as electricity consumers. The research method is a mathematical modeling of random processes of energy consumption and generation, which allows us to analyze the current power balancing and obtain integrated characteristics of the energy balance. The operation of the balance regulating means is presented as a dynamic system, and balancing is considered as a superposition of random processes of generation and consumption. The peculiarity of the study is the simultaneous consideration of rapid changes of wind and solar, variability of the load and the possibilities of current regulation. Analytical research allows us to determine the characteristics of the probability distribution of the resulting processes. An adaptive simulation model with the possibility of variation of input parameters is proposed, which present the processes of energy generation and load taking into account the intermediate control powers. As a result of the research, a method of presenting the current states of the power system is proposed, which allows us to obtain estimates of probable modes. The model allows the construction of many states of the system and the search for optimal solutions. The significance of the obtained results is the proposed research method for the calculation of the required indicators, and some practically important estimates are obtained. Bibl. 16, fig. 8.