Известия Томского политехнического университета: Инжиниринг георесурсов (Oct 2022)
ENERGY EFFICIENT ALGORITHM FOR CONTROLLING PHOTOVOLTAIC POWER PLANT WITH ELECTROCHEMICAL AND THERMAL ENERGY STORAGE
Abstract
The relevance of the work is determined by the growing demand for energy, especially for environmentally friendly. Photovoltaic power generation is very promising in areas with high insolation, where centralized power systems are not available or where available electricity is expensive. However, the high cost of photovoltaic power plant equipment limits its wide application. One way to reduce the cost of a photovoltaic installation is to store electrical energy not only in electrochemical batteries, but also in the form of heated water in less expensive water heating installations, which will reduce the cost of a photovoltaic installation by reducing the battery capacity while providing the consumer with hot water. One of the urgent tasks is the development of control algorithms for photovoltaic power plants with a hybrid electrochemical and thermal system for storing electricity. The main aim of the work is to develop the algorithm for controlling the energy balance of an autonomous photovoltaic power plant with electrochemical and thermal energy storage. Methods: analytical methods for studying photovoltaic power plants with an aggregate method of solar energy storage: in electrochemical and thermal batteries, computer simulation methods, method of comparison with previous scientific studies. Results. The authors developed the structure of the control system for energy balance of a photovoltaic power plant with electrochemical and thermal storage of electricity and proposed the algorithm for functioning of the control system using MPPT technologies. The structure and functioning algorithm were tested on the example of optimizing the energy balance of a social facility in Iraq by modeling in the Matlab software package.
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