Steel Mill with Arc Furnace

January 2017 filter Equipment at an arc furnace was commisioned at 33kV grid located in a german steel mill. Due to new energy supply requirements the power factor has to be improved (lowering of the reactive power) and additionally the grid interferences of the arc furnace has to be reduced.
A filter circuit / compensation is designed for 33kV / 50Hz with an effective compensation power of 38.2Mvar.
The filter is tuned to 138Hz and has a damping of 160Ω.