The Characteristics of Partial Discharge on Corona Defect in GIS based on Multi-Detection method

摘要

Gas insulated switchgear (GIS) is the most important equipment in the power grid. The partial discharge (PD) is the premonitory detection method for the insulation failure. The UHF detection method and acoustic detection method is the most used in filed. UHF method has excellent anti-interference performance and acoustic method has excellent defect location ability. Metal tip defect will appear on GIS for manufacturing and other reasons. The metal tip will lead to corona discharge under operating voltage. It is necessary to study the characteristics of corona discharge for fault detection and diagnosis. The experimental system is set up and the corona discharge characteristics on conductor and ground in actual GIS model are studied using above two methods. The comparing of the two methods is studied in this paper.%Wyładowanie niezupełne może być metodą detekcji złej izolacji w przełącznikach gazowych GIS. Doi wykrywania wyładowania najczęściej używa się metody UHV lub akustycznej. Pierwsza z nich jest odporna na zakłócenia druga bardzo dobrze pozwala na lokalizację