Zaburzenia jakości energii elektrycznej w sieciach dystrybucyjnych

Power quality assessment is one of the elements of the policy activities of the distribution system operator. Classic research methodology introduced elements such as 10 minutes averaging and is based on a defined set of parameters criterion. In the classification of electromagnetic disturbances are, however, short-term phenomenon or pulse oscillation, which can not be sufficiently recognized by the averaging mechanism used in the classical evaluation of the power quality. This paper presents the results of experiments measuring using synchronous power quality monitoring system to asses disturbances in the selected fields substation 110/20/10 kV. Particular attention was paid to the detection and analysis of low and medium frequency oscillation and impulse disturbances transferred to different voltage levels.