Salman, AmmarAmmarSalmanDallmer-Zerbe, KilianKilianDallmer-ZerbeSinger, RolandRolandSingerStrasser, K.K.StrasserRogalla, SönkeSönkeRogalla2022-03-132022-03-132016https://publica.fraunhofer.de/handle/publica/39610510.1109/ENERGYCON.2016.7513987Increasing installation of renewable energy generators and increasing amount of small grid-connected generators, such as Combined Heat and Power (CHP) units influences large-disturbance voltage stability in distribution grids [1]. Due to this reason grid codes demand standardized simulation models. In Germany TR4-models are obligatory [2]. This publication focuses on the behavior of a synchronous generator (SG) during short-circuits. All presented TR4-models are validated according to low voltage ride through (LVRT) measurements in a laboratory environment. An improved model is presented that shows less deviation in comparison to standard model implementation. The improved model is applied within an exemplary distribution grid simulation.enLeistungselektronikNetze und Intelligente SystemeWechselrichter in Netzenconference paper