Abstract:
GIS (Gas Insulated Switchgear) is an important equipment and responsible for power distribution and fault excision in power grid. The live detection methods have the adva...Show MoreNotes: This article was mistakenly omitted from the original submission to IEEE Xplore. It is now included as part of the conference record.
Metadata
Abstract:
GIS (Gas Insulated Switchgear) is an important equipment and responsible for power distribution and fault excision in power grid. The live detection methods have the advantages such as detecting without power failure, discovering and alerting equipment defects early and timely, avoiding equipment failures and power grid accidents. The GIS is inspected by live detection methods like ultrasonic, UHF (Ultra High Frequency), vibration and gas decomposition products. The test signals are analyzed based on electromagnetic field theory. The reason and development process of discharge are explained by the principle of capacitance partial voltage and chemical reaction equation. It is found that there are vibration and discharge phenomena in the 110kV GIS busbar PT disconnector. The ablation trace is found on the fork, reed and drive pin after offline disassembly. Meanwhile, amount of metal sulfide power is found near the discharge point. The reason of discharge is probably the lack of pressing force of the reed. Then the contact among the fork, reed and drive pin is loose and cause the floating discharge. The offline disassembly result verifies the validity of online detection. The online detection prevents a severe accident of unplanned outage of busbar caused by the discharge..
Notes: This article was mistakenly omitted from the original submission to IEEE Xplore. It is now included as part of the conference record.
Published in: 2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE)
Date of Conference: 25-29 September 2022
Date Added to IEEE Xplore: 13 February 2023
ISBN Information:
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