Comparison of some models of reaction kinetics in HV circuit breakers with SF₆after current zero

Abstract

In this paper, the solutions of three models of reaction kinetics in HV circuit breakers with SF6 after current zero are presented and compared. One model has been proposed by Bartlová, the co-author of this paper, the other two models under comparison have been taken over from the literature. In all the three models a constant pressure p(t) = 4 atm and the same dependence of temperature on time T(t) are assumed. For the description of the relation between equilibrium and kinetic composition in a system, the concept of asymptotic composition is introduced. A comparison of the composition and enthalpy of the products of SF6 dissociation and ionization for the given pressure and T(t) is made. General conclusions have been derived from the comparison.

Low-lying electronic states of SF2 and its ions as studied by the MRCI technique

“…Resulting excitation energies together with the MRCI/ aug-cc-pVQZ geometrical parameters serve as an input for the calculation of standard thermodynamic functions (using the concept of the partition function [3]), the necessary step in the simulation of the properties of the SF 6 quenching medium [19].…”

Dominant Physicochemical Properties of SF6/N2 Thermal Plasmas with a Two-temperature Chemical Kinetic Model

“…The dependence of temperature on time is under the recommendation of Bartlová [10]. As many reactions are reversible, the reverse rate constants (r kz ) are obtained with the assistance of the forward rate constant (r k ) and the relative equilibrium constant (K k ) [10]. With the recommendation of Gurvich et al [11], K k is given by…”

“…, NF, NS and 80 reactions, with 76 to be reverse ones. The reactions are obtained from the work of Girard et al [13], Adamec et al [11], Teulet et al [14], Woodall et al [15] and Bartlová et al [10] as shown in table 1.…”

Influence of concentration on the values of recombination and ionization rate coefficients of atoms S and F

“…The kinetics model considered in this paper is the model B described in detail in [1]. In the model total 63 reactions R 1 , R 2 , ..., R 63 are considered.…”

“…reactions (1) and (2) are not taken into account. • y o : the rate coefficient r 60 of the forward reaction of (1) was taken over from [3] r 60 = 3.023 × 10 17 T −1.5 exp(−120230/T ) mol −1 m 3 s −1 and r 61 = r 60 /K 60 , where K 60 is the equilibrium constant of the reaction (1).…”