Title :
Measurements and modelling in the current zero region of vacuum circuit breakers for high current interruption
Author :
Kaumanns, Johannes
Author_Institution :
Inst. fur Allgemeine Elektrotechnik, Tech. Hochschule Aachen, Germany
Abstract :
Post arc current and voltage measurements with high time resolution were carried out with industrial vacuum circuit breakers for investigating their current zero conditions and current interruption. Based on experimental results, plasma parameters were estimated by means of a modified “continuous transition model”. Dielectric effects in the post arc current zero region were detected and modelled. At lower current amplitudes (Iˆ<16 kA), typical post arc currents were obtained. At higher current amplitudes, the probability of higher post arc current charges increases without the occurrence of breakdowns. It has been shown that charge generation takes place in the post arc current region
Keywords :
circuit-breaking arcs; electric breakdown; electric current measurement; insulation testing; plasma; short-circuit currents; switchgear testing; vacuum arcs; vacuum breakdown; vacuum circuit breakers; voltage measurement; breakdown probability; charge generation; continuous transition model; current amplitudes; current zero region; dielectric effects; high current interruption; industrial vacuum circuit breakers; plasma parameters; post arc current charges; post arc current measurements; post arc voltage measurements; Circuit breakers; Circuit testing; Current measurement; Dielectrics; Electric breakdown; Parameter estimation; Plasma measurements; Thermal stresses; Vacuum arcs; Voltage measurement;
Conference_Titel :
Discharges and Electrical Insulation in Vacuum, 1996. Proceedings. ISDEIV., XVIIth International Symposium on
Conference_Location :
Berkeley, CA
Print_ISBN :
0-7803-2906-6
DOI :
10.1109/DEIV.1996.545365
