The estimation of hydroelectric power station functioning efficiency at the poor power quality

The method of estimating the effectiveness of hydroelectric power stations functioning according to power quality indexes was elaborated. Formulae for estimating the life time of electric equipment isolation at the poor power quality were got, and formulae for estimating indexes of safety of electric power stations at the poor power quality were elaborated. Areas characterizing the effectiveness of hydroelectric power station functioning at power distortions were defined.