Abstract
An integrated Smart Grid system has been developed for matching the production and consumption of electric power based on a prediction of changes in the battery capacity. Advanced decisions on the change in power transmission capacity have made it possible to regulate voltage in the distribution system by maintaining the power factor of the photoelectric charging station. Voltages at the input to the hybrid inverter and in the distribution system were measured to assess their ratio. Comprehensive mathematical and logical modeling of the photoelectric charging station was performed based on the mathematical substantiation of architecture and operation maintenance. A dynamic subsystem including such components as mains, a photoelectric module, a hybrid inverter, batteries, a two-way counter Smart Meter and a charger formed the basis of the proposed technological system. Time constants and coefficients of mathematical models of dynamics in terms of estimation of changes in the battery capacity and power factor of the photoelectric charging station were determined. A functional estimate of changes in the battery capacity and power factor of the photoelectric charging station was obtained. Maintenance of voltage in the distribution system was realized based on resulting operation data to estimate a change in the battery capacity. Advanced decision-making has made it possible to raise the power factor of the photoelectric charging station up to 40 % due to matching the electric power production and consumption. Maintenance of operation of the photoelectric charging station using the developed Smart Grid technology has enabled prevention of peak loading of the power system due to a 20 % reduction of power consumption from the network.
Highlights
Distributed generation of electric energy using renewable sources requires connection to Smart Grid technologies for integration into the electric network
Advanced decisions were made during this period to raise the level of power transmission to the network (Table 4, Fig. 7, 8) to maintain voltage in the distribution system and consume the battery capacity
It was proposed to maintain voltage in the distribution system based on a prediction of changes in the battery capacity and power factor of the photoelectric charging station
Summary
Distributed generation of electric energy using renewable sources requires connection to Smart Grid technologies for integration into the electric network. Study [2] tackles forecasting change in the battery capacity for connection to Smart Grid technologies It presents an integrated system of maintaining the operation of a wind-solar electrical system. Maintaining of power factor of the photoelectric charging station as regards redistribution of produced and consumed electricity is an urgent problem of further development of Smart Grid technologies To this end, it is necessary to predict changes in battery capacity and power factor of the photoelectric charging station when measuring the input voltage of a hybrid inverter and voltage in the distribution system to assess their ratio. The power factor of photoelectric charging stations is maintained by coordination of production and consumption of electric energy This enables the prevention of peak loads in the electric network in conditions of satisfaction of growing consumer demands
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