Analysis of the conditions for the operation of protection systems at the parallel operation of medium-voltage distribution networks

Parallel operation in medium-voltage distribution network has very positive effect on the losses associated with the transfer of energy through the network. These losses are considerably lower in case of the parallel operation, which also improves the voltage profile during the normal operation of the network. One of the key tasks of distribution companies is the minimization of power supply interruptions. It increases the supply reliability, which can be improved also by parallel operation of the medium-voltage network. An important requirement for parallel operation in medium-voltage distribution network is a deeper insight into phenomena going on during different types of operation and faults. The question that should be answered before parallel operation is established is whether the…