Compatibility of traditional and electronic generation dynamic characteristics in electric power systems

Abstract

The purpose of the paper is using the simplest scheme to show the negative effect of the wrong choice of inverter control laws on the dynamic stability of the electric power system with connected electronic generation. Today the small-scale generation based on renewable energy sources is becoming more and more widespread. In the majority of cases, it is non-synchronous. As distribution electrical networks combining synchronous and non-synchronous generation have a synchronous basis the small-scale generation using renewable energy sources is connected to the distribution network through an inverter. This type of generation is called electronic. To ensure the dynamic electro-mechanical compatibility of electronic generation and the external electrical system it is proposed to form the invertor control laws on the basis of a reference model, the electromechanical parameters of which are consistent with the data of the external network. The identification method of electromechanical parameters of the external power system is proposed for reference model adjustment. The results of method approbation on the example of a real 0.4 kV electric network based on the transient histogram results are presented.