On the comparison between a detailed turbine-generator EMTP simulation and corresponding field test results

摘要

The machines of the LG1 generating station may, under some circumstances, be isolated from the Hydro-Quebec system but remain connected to an unloaded transmission line. As a preliminary study indicated the risk of harmonic overvoltages, a more thorough EMTP investigation was performed in which the models and data were adjusted to reproduce recordings from a field test. The results from these simulations pointed out the need to use detailed modeling for similar studies. Furthermore, experience acquired during the process led to the recommendation on models and data selecting in order to guarantee more precise results. As a result, a test procedure to determine the parameters of a hydraulic turbine model is proposed.