The Consumer Localization Distorting Power Quality: Studying of a Possibility

The article is devoted to the analysis of the power quality indicators registrations results on substation buses having a mixed load character (city networks, industrial and other electricity consumers) and determining the culprit of its distorting one. The research was carried out at several voltage classes of one substation - open type high-voltage switchgear 150, 110, 35 kV and 6 kV indoor switchgear. Usually, the energy supplying organization is automatically recognized as the culprit of electricity quality distortions. However, this article shows the results of experiments at the operating substation, confirming that the sources of power quality distortion are exclusively on the side of 6kV. At the same time, control of voltage distortions at the point of common connection of several consumers is not sufficient to localize distorting sources.