Comparative Analysis of Wind Farms Dynamic Coefficient of Unevenness in Various Energy Systems

In the context of integrating wind farms into power systems, it is imperative to ensure a reliable power supply to consumers. Changes in the operating modes of wind power plants (WPPs) should be compensated for by the ability of the control range of conventional power plants to load or unload active power. Therefore, when increasing the installed capacity of WPPs in power systems, improving the manoeuvrability characteristics of thermal power plants, including the expansion of the regulation range, is the main condition for reliable operation of the power system. The results of research on calculation of dynamic non-uniformity coefficient for different power systems with wind power plants are presented. Comparison of the results made it possible to establish that changes in WPP power with an amplitude of up to 40% of the installed or baseline WPP power and a fluctuation period of 15 minutes to 3 hours constitute the main time duration (about 90%). Using the Australian power system as an example, it is shown that the distribution of WPPs across the power system has a positive effect on load schedule levelling.