Application of Steel Enterprises Via Arcing Coil Grounding Method in 10 kV Distribution Network
This paper analysed the changes in different grounding systems before and after the single-phase grounding,and the advantages and disadvantages of the 10 kV power supply system grounded by the arc-cancelling coil.Proposed in the iron and steel enterprises 10 kV power supply system by arcing coil grounding system application,combined with the accident occurred in the enterprise elaboration due to the system capacitance to ground is large,the occurrence of single-phase grounding,the fault point is easy to produce arc,and develop into a phase-to-phase short circuit.At the same time,intermittent arcing occurs and series resonance overvoltage occurs,posing a threat to the insulation of the entire system.It is finally concluded that the safety of power supply in steel enterprises is greatly improved by selecting grounding transformer and arcing coil device in 10 kV power supply system of steel enterprises.
iron and steel enterprisesarcing coiladvantages and disadvantages
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