Study of the operation of synchronous generator voltage regulator during the creation of post blackout start-up path

This paper presents the influence of automatic voltage regulator (AVR) of synchronous generator on the process of creation of post black-out start-up path. Two elements of AVR have a significant impact on this process underexcitation limiter (UEL) and load compensation (LC). The authors present a theoretical investigation and simulation results that illustrate how the mentioned elements of AVR affect voltage levels in a power system during the creation of start-up path. The results of the study show that present procedures of the preparation of start-up path in Polish Power System should be modified.