Method for determining the critical parameters of the sustainability of an energy system with integrated renewable energy sources

Abstract

This paper proposes a method for modeling the regime of a power system with integrated variable renewable sources - wind power units and solar PV installations, the generation of which is continuously changing in accordance with the random variability of wind speed and solar radiation. Wind speed and solar radiation data were obtained for real regions in which a 240 MW wind farm and a 230 MW solar PV power plant are currently under construction. A method is proposed for calculating the value of the critical stress in the system for indefinitely changing wind speed and the level of its fluctuations, which determine the stochastic variability of the system regime. For each interval of change in wind speed, a set of probable modes of the system and the corresponding critical voltages in the network of the system are determined. The computational experiments were performed for the 30-node IEEE scheme.