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Development planning of the electric power network at the Ravne steelworks

In the paper, we present a process of development planning for the distribution power network at the Ravne steelworks for a ten-year period, precisely for 2011–2020. In the first part we describe a general approach to network planning, lay down the planning objectives and determine the methodology and technical and economic criteria according to which the network will be developed. Next, the current state of the Ravne power network (topology, equipment, power consumption) is described. Based on the measurement results, the state of the power quality is assessed with a particular emphasize laid on the flicker and harmonic distortion. We then make a simulation model of the steelworks power distribution network by using the DIgSILENT PowerFactory program. In the last part we propose a development plan for the Ravne steelworks based on the general planning criteria. We considered the current state of the power network (load, power quality), age of the equipment used, planned reconstruction and the predicted growth in electricity consumption.