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The arc column mathematical model taking into account the thermodynamic processes in the damaged equipment is described in the article. The functioning of the model is based on the use of the first law of thermodynamics and the 2nd Kirchhoff's rule. Nonlinear dependencies of the electrical and thermodynamic parameters on temperature and pressure of the arc column plasma play an important role in the...
Urgency of the problem. Higher probability of the transverse asymmetry (short-circuit (SC)) in the 6–110 kV distribution grids as compared to the longitudinal-transverse and longitudinal asymmetry on overhead lines (phase wire breaks, breaks with SC) has led to less attention to it [1-8]. It should be noted, breaks of phase wires of overhead transmission lines (overhead lines), even at a short circuit...
The approach to creation of a refined math model of transient resistance electric arc that is suitable for analysis of relay protection operating and parameters monitoring in information signs multidimensional space, is outlined in the article. It describes experimental research of electric arc parameters, particularly determination of plasma conductivity for various temperatures. Obtained function...
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