A Coordination of the Capacities of the Hybrid Renewable Energy System and the Seasonal Variable Load Following the Intermittent Generation

The use of renewable energy in conjunction with geothermal heat pumps as effective sources of heat or chill, on the one hand, solves the problem of energy supply and logistics to remote areas through the use of local resources (solar and wind), on the other hand, reduces emissions to the atmosphere by eliminating the use of fossil fuels. The study calculated the power generated by PV panels and wind turbines for various configurations of the power system and various load aggregation. The optimal configurations of the power system and the respective aggregation schemes were chosen so that the total generated capacity best met the power demand of the thermal stabilization system and at the same time configuration cost was minimal. Weather data used for calculations had 4 h temporal resolution, which was essential for our approach rather than averaged data. As a result of the work done, the optimal configuration which had the solar energy ratio of 0.84 and aggregation scheme of 40/40/20/20% and provided the thermal stabilization system power demand with a margin factor of 1.4 was chosen. The ratio of the power system nameplate capacity to the nameplate capacity of consumers was 3.26. The considered approach main feature is that the load (inverter heat pump) is following the power generation, so this method allows to significantly reduce the capacity of energy storage in autonomous systems.