The development of multichamber arresters

Calculation of the composition of plasma of an arc pulsed discharge in a multichamber arrester

“…(i) a total of 86 equations, which were derived based on the law of mass action, of the following form: (1) where n i are the number densities of elements (atoms), n j is the number density of complex components (mol ecules), a i, j is the matrix of stoichiometric coefficients of reactions of decomposition of complex substances into atoms, K j (T, p) is the equilibrium constant of the corresponding reaction, and N = 7 is the number of chemical elements forming the system;…”

“…The use of multichamber arresters is now consid ered to be a new and promising way of protecting over head transmission lines from lightning overvoltages [1,2]. A multichamber arrester incorporates a great num ber of series connected chambers in which a pulsed arc discharge is initiated upon breakdown.…”

Optimization and Experimental Study of the Semi-Closed Short-Gap Arc-Extinguishing Chamber Based on a Magnetohydrodynamics Model

“…The arc can be extinguished because of the nonlinear voltage and current characteristics of the MOV, but the cost of installing MOV arresters in a whole line is costly. Multi-chamber arc-extinguishing structures were first proposed by Podporkin [6,7]. They have attracted wide attention because of their excellent arc-extinguishing performance, relatively simple processing technology and low cost.…”

“…Multi-chamber arc-extinguishing structures with different numbers of SSACs can be applied to different voltage levels and different arc-extinguishing capacities [6][7][8]. There are three main reasons for the excellent arc-extinguishing capability of multi-chamber arc-extinguishing structures that can be summarized as follows: (1) The short arc energy in each SSAC maintains its combustion, and the air heated by the arc in the chamber produces a high-speed airflow, which increases the convective heat dissipation of the arc [9].…”

“…However, the structures and parameters of the multi-chamber arc-extinguishing structures at present are designed by trial-and-error [6][7][8], and an arc-extinguishing mechanism is not yet available to provide a universal theory and method to design multi-chamber arc-extinguishing structures for various voltage levels. Some scholars have established simulation models of arcs in multi-chamber arc-extinguishing structures to study the characteristics of the plasma in an arc chamber [8], but more work is still needed to reveal the arc-extinguishing mechanism of the chamber including the arc An arc-extinguishing device is proposed and installed at the end of the electrode of the parallel gap to interrupt grounding fault currents caused by lightning flashover in 77 kV transmission lines [4].…”