Title :
The effect of the electric field of the grounded electrode on the capacitance of compressed-gas capacitors
Author_Institution :
Nat. High Voltage Meterage Station, Wuhan, China
Abstract :
Summary form only given. A loss tangent between an earthed electrode and a high-voltage electrode on the order of 10/sup -2/ has been measured in a 100-kV capacitor. This induces heating of the electrodes, which results in a slow irregular increase in capacitance. Thus, capacitors do not exhibit high stability at rated voltage. For measurements requiring high stability, the working voltage is usually limited to 1/3 of the rating.<>
Keywords :
electric variables measurement; high-voltage techniques; measurement errors; measurement standards; power capacitors; stability; 100 kV; HV; compressed-gas capacitors; earthed electrode; electric field; grounded electrode; heating; high-voltage electrode; loss tangent; measurement standards; stability; Capacitance; Capacitors; Dielectric losses; Electrodes; Fluctuations; Insulation; Stability; Sulfur hexafluoride; Temperature; Voltage;
Conference_Titel :
Precision Electromagnetic Measurements, 1990. CPEM '90 Digest., Conference on
Conference_Location :
Ottawa, Ontario, Canada
DOI :
10.1109/CPEM.1990.110060
