Chornous E. An improvement method of estimate safety electrical equipment district coal mine in network malfunction

Subject of inquiry - safety of district power supply network and protective ground connection. Object of inquiry - the development of estimate method of district mine power-supply system level danger for men and elaboration recommendation by increase of safety network. Analysis - mathematical simulation of power-supply system and ground district network. It explore the integral characteristics of dangerous level district network for men. It demonstrated, integral characteristics are as optimization criteria of compensate equipment parameters and operating mode. The currents of network and spreading currents are explored in the mode of two-phase short circuit on set about the in space points of ground connection. It is set that in this emergency situation existent facilities of current defence are uneffective. Results to use applied-research institutes for several procedure by dangerous level district mine network. Area of application - protection of labour, coal industry, electroenergetics.