Analysis of the parameters of the parallel-operating synchronous and asynchronous generator at the pow-er plant based on the simulation model

Abstract

Relevance: In recent years, many countries around the world have been paying special attention to energy resource conservation, the creation of new alternative energy sources, and the rational use of existing renewable energy sources (REMs). According to the review of key performance indicators for 2020, the largest share of renewable energy sources falls on Sweden - 60.1%, Finland - 43.8% and Latvia - 42.1%. The main sources of energy production in these countries are hydroelectric power plants (HPPs) and wind power plants (WPPs), as well as biomass processing sources. In this context, special importance is attached to autonomous systems that impose requirements for the simplicity of power source design, ease of maintenance, relatively low mass (kVA/kg), and overall dimensions, as well as ensuring the stability of operating parameters. Studies have shown that when using short-circuited rotor (AG) asynchronous generators as a power source, compared to other types of mechanical converters, AG has higher energy performance, superior dynamic and static characteristics, high technical reliability, simplicity of construction, and low cost. Therefore, the use of AG in autonomous stations, as well as in energy systems driven by any type of primary motors, is of great importance for conducting research aimed at solving pressing problems in electric power engineering.

Aim: analysis and justification of the results based on the simulation model of a parallel-operating synchronous generator (SG) and an AG in autonomous mode.

Methods: methods for analyzing the established and transient modes of electric power systems based on simulation modeling were used.

Results: The influence of power source load change on the stability of its state parameters, consisting of a short-circuited rotor asynchronous generator, was analyzed. Based on the analysis results, appropriate proposals were made for the use of asynchronous generators in renewable energy sources.