Analysis of Electrical Power Quality Parameters at the High Voltage Level

The paper focuses on the parameters of electricity power quality in the power grid at the level of 110 kV. One of the latest revisions of the PN-EN 50160 standard expands the area of its application to the high voltages. Because of that, tests were done to determine the main parameters of power quality at the point of delivery of the electricity to the customer at 110 kV voltage level. Obtained results, with power quality analyser help, were analysed and compared with the limits contained in the relevant standardization documents.