Analysis of Monitoring System of Partial Discharge Electromagnetic Interference in Ultra-high Voltage Substation Environment

Abstract

In order to solve the existing noise reduction measures in substation is not comprehensive, and the lack of substation on-site interference measures, the monitoring system of partial discharge electromagnetic interference in ultrahigh voltage (UHV) substation environment is studied. First of all, the ultrahigh frequency (UFH) interference information in substation is analyzed. Then signal suppression measures are adopted according to the interference signals in the substation. Finally, the UFH monitoring system is established based on the random pulse interference signal elimination method based on fuzzy clustering analysis. The results show that the electromagnetic interference monitoring system of partial discharge in the environment of UHV substation studied in this research can significantly improve the detection and localization of partial discharge, and can have more choices in determining the frequency band, which is helpful to improve the accuracy of time delay measurement so as to improve the accuracy of localization. The result of this research provides a good guidance for solving electromagnetic interference problems in UHV substations in China.