Distributed generation

Ukraine’s energy sector is undergoing rapid transformation due to both the need to restore generation capacity following large-scale infrastructure damage and the accelerated transition to renewable energy sources (RES). Accurate forecasting of electricity production from solar and wind power plants is a key factor for balancing the energy system and reducing investment risks associated with the development of distributed generation.

A problem of approximation of the primary energy flow parameters change function by linear approximations to ensure a minimal error is considered in the paper. A representation of the parameters of voltage and internal resistance of equivalent generators of renewable sources as linear functions allows an increase in the level of energy transmitted to the load. To solve the problem set, it is proposed to approximate the primary energy flow parameters change function by the system of Franklin orthonormal functions.