THE DESIGNING FEATURES FOR CONSUMER ENERGY SUPPLY SYSTEMS BASED ON PHOTOVOLTAICS

Abstract

The key task of improving the efficiency of Ukraine's energy system is to develop integrated generation systems that use renewable energy sources, among which solar energy has one of the highest potentials, and to expand it. The introduction of combined generation systems using multiple energy sources is quite promising for improving the efficiency of energy supply to low-consumption facilities. The results of the design of such systems are significant indicators of both the efficiency of the plant as a whole and the investment. In this article design calculations were carried out for the construction of a photovoltaic station, which should provide uninterrupted power supply to a group of consumers of an individual residential building for 6 hours in the absence of an external power grid. The required power reserve to supply a certain group of consumers with various types of storage devices was determined, which based on the initial power consumption plan, as well as the required power of the PV module array to compensate for battery discharge. To verify the correctness of the design calculations the operation of the plant and battery packs of different types for one year were simulated. The modeling results showed a slight impact of battery types on the efficiency of the plant, and a significant difference in the storage capacity of different types of batteries for the same level of electricity demand. In the course of further work, the advantages of modular photovoltaic power plants for backup power supply and their component composition were determined. The methodology for calculating the parameters of the station components reflects the peculiarities of selecting equipment for the technical implementation of photovoltaic stations. A number of technical solutions for the construction of stations based on the design results are proposed.