In addition to electrical defects, gpo3 laminated switchgear (GIS) also has mechanical defects during operation The mechanical defects of GIS are mainly caused by the poor contact of its conductive circuit. The mechanical defects of GIS during the operation of gpo3 laminate will lead to mechanical vibration of the equipment. Long term mechanical vibration will lead to air leakage of the equipment, the decline of seismic performance and even the generation of electrical defects, affecting the safe operation of the equipment In this paper, aiming at the vibration detection of mechanical defects of GIS equipment, the source of GIS vibration signal during operation is analyzed Poor contact defect of disconnector was built in the laboratory
The vibration signal characteristics of gpo3 laminate under high current are studied. The results show that the fundamental frequency of GIS vibration signal is 100 Hz. When there are mechanical defects such as poor contact of disconnector, gpo3 will increase the amplitude of its shell vibration signal, in which the 200 Hz and 300 Hz components will increase significantly Using GIS shell vibration detection can effectively realize the live detection of GIS equipment mechanical state
