Open AccessThe Positive Role of the Partial Discharge Monitoring System in the Partial Discharge Detection of GIS Equipment
Author(s) -
Jiangtian Chen,
Dong Wei,
Zhi Wang,
Congcong Liu,
Weitao Shao,
Weiling Shao
Publication year - 2022
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2224/1/012046
Subject(s) - switchgear , partial discharge , oscilloscope , casing , line (geometry) , environmental science , engineering , electrical engineering , voltage , mechanical engineering , geometry , mathematics
When gas insulated metal enclosed switchgear and controlgear (GIS) has internal discharge, some faults are difficult to find during inspections due to the enclosed metal casing. This paper introduces the event of the floating potential discharge inside the GIS equipment of a 500kV substation found by GIS on-line monitoring system. Through on-site ultra-high frequency detection and precise positioning of the oscilloscope to determine the position of the discharge source at a certain switch, combined with the disassembly of the equipment, it is determined that the equipment defect is the discharge of the floating electrode of the switch fork.The results show that the on-line monitoring of GIS partial discharge has an important reference role in discovering the internal discharge of equipment during the test interval, and the monitoring and maintenance of GIS partial discharge on-line monitoring system should be strengthened in daily work.