Open AccessAnalysis of Arc Processes in Multi-chamber Arrester for Lightning Protection at High-voltage Overhead Power Lines
Author(s) -
Iurii Murashov,
V Frolov,
Dirk Uhrlandt,
Sergey Gortschakow,
D. Ivanov,
A. D. Sivaev
Publication year - 2017
Publication title -
plasma physics and technology
Language(s) - English
Resource type - Journals
eISSN - 2336-2634
pISSN - 2336-2626
DOI - 10.14311/ppt.2017.2.124
Subject(s) - lightning arrester , lightning (connector) , electrical engineering , mechanics , electric arc , overhead (engineering) , high voltage , transient (computer programming) , power (physics) , engineering , nuclear engineering , voltage , electrode , physics , computer science , thermodynamics , quantum mechanics , operating system
Nowadays multi-chamber arresters are widely distributed as devices of lightning protection of overhead power lines. A mathematical modelling of processes in the discharge chamber of multichamber arrester is necessary to carry out in order to improve its breaking capacity. A three-dimensional mathematical transient model of thermal, gas-dynamic and electromagnetic processes taking place in the discharge chamber of multi-chamber arrester is presented in the article. Basic assumptions, model equations, a computational domain and the boundary conditions are described. Plasma turbulence is taken into account. The results of the calculation i.e. distributions of plasma temperature and overpressure in the discharge chamber at different time points are shown. The analysis of the results was carried out. It is shown that the presence of cavities in the electrodes design promotes electric arc extinction in the discharge chamber of multi-chamber arrester.