Integration of New RES in Power System of North Macedonia

The goal of the paper is to investigate and evaluate the impact of integration of new planned renewable energy sources (RES) on the operating parameters of the transmission networks. The paper presents methodology and algorithm for developing software module for RES impact assessment on the elements loading of the transmission networks (lines and transformers) and on network buses voltages within grid code defined limits and short circuit currents level. According to the methodology software module is developed using PYTHON platform. The integrated calculations in the module are part of standard planning mechanisms of power system and maintaining the predefined level of security of supply and reliability of power system elements and substations. The module is tested and evaluated on transmission network individual forecasted model of power system of North Macedonia for the year 2025.