A study on stability enhancement of distributed generators

Large number of 400 V distributed generators (DGs) connected to existing electric systems may have a great impact on their dynamic behaviour when external disturbances occur, such as a three-phase short circuit fault. This paper presents an investigation about the transient stability and the capacity of DG to withstand disturbances in the distribution network. Three proposed solutions to avoid the loss of generation are presented. The RTDS (real time digital simulator) platform is used for analysis of system performance.