Title :
DC dielectric characteristics and conception of insulation design for DC GIS
Author :
Hasegawa, T. ; Yamaji, K. ; Hatano, M. ; Aoyagi, H. ; Taniguchi, Y. ; Kobayashi, A.
Author_Institution :
Kansai Electr. Power Co. Inc., Osaka, Japan
fDate :
10/1/1996 12:00:00 AM
Abstract :
In order to discuss the dielectric performance of DC GIS, the flashover characteristics of gas-insulated bus were studied under conical- and disk-type spacers. The test involves the investigation on effect of electrification for charge to be accumulated in spacers and the effect of metallic particles. As the result, it was found that the dielectric characteristics of conical-type spacer are better than disk type. Moreover, the dielectric performance of DC GIS is more affected by the characteristics of coaxial electrode system than spacer surface with regard to metallic particle. On the basis of the results of these tests, this report presents the conception of insulation design for DC GIS
Keywords :
HVDC power transmission; design engineering; electrodes; flashover; gas insulated switchgear; insulation testing; switchgear testing; 2800 A; 2800 MW; 500 kV; DC GIS; charge accumulation; coaxial electrode system; conical-type spacer; dielectric performance; disk-type spacers; electrification; flashover characteristics; gas-insulated bus; insulation design; metallic particles; Conductors; Dielectrics and electrical insulation; Flashover; Gas insulation; Geographic Information Systems; HVDC transmission; Insulation testing; Lightning; Switches; Voltage;
Journal_Title :
Power Delivery, IEEE Transactions on
