Title :
Development of detection method with a magnetic field sensor for incomplete contact in gas insulated switches and bus connecting parts
Author :
Fujinami, H. ; Takuma, T. ; Kawamoto, T.
Author_Institution :
Central Res. Inst. of Electr. Power Ind., Tokyo, Japan
fDate :
1/1/1995 12:00:00 AM
Abstract :
This paper describes a detecting method of incomplete contact in gas insulated switches and bus connecting parts. The principle of the method is to measure the change in magnetic field caused by the current distribution at an abnormal contact point. Fundamental studies with small-size bus models have shown that incomplete contact can be reliably detected with an opto-magnetic sensor in the case of aluminum enclosures. A feasibility study was also conducted for a full-scaled 300 kV GIS structure with more realistic incomplete contact conditions
Keywords :
current distribution; electrical contacts; gas insulated switchgear; magnetic field measurement; magneto-optical sensors; switchgear testing; 300 kV; GIS; abnormal contact point; aluminum enclosures; bus connecting parts; current distribution; feasibility study; gas insulated switchgear; incomplete contact detection; magnetic field sensor; opto-magnetic sensor; Aluminum; Current distribution; Current measurement; Gas insulation; Geographic Information Systems; Joining processes; Magnetic field measurement; Magnetic sensors; Switches; Switchgear;
Journal_Title :
Power Delivery, IEEE Transactions on
