Title :
Testing procedure for metal oxide varistors protecting EHV series capacitors
Author :
Strenstrom, L. ; Lindberg, P. ; Samuelsson, J.
Author_Institution :
ASEA HV Apparatus, Ludvika, Sweden
fDate :
4/1/1988 12:00:00 AM
Abstract :
Test procedures for metal oxide varistors used as overvoltage limiting protectors for EHV series capacitors are proposed. Basic varistor parameters are defined. The factors that must be taken into account and the test requirements are discussed. Special attention is devoted to the problem of power frequency current sharing among many parallel connected columns. The application of the procedures to the world´s largest 500 kV series capacitor installation with metal oxide varistors as overvoltage protection is briefly described
Keywords :
overvoltage protection; power capacitors; semiconductor device testing; varistors; 500 kV; EHV series capacitors; SDT; metal oxide varistors; overvoltage limiting protectors; overvoltage protection; power capacitors; power frequency current sharing; test requirements; Capacitors; Costs; Frequency; Protection; Resistors; Silicon carbide; Spark gaps; Testing; Varistors; Voltage control;
Journal_Title :
Power Delivery, IEEE Transactions on
