Technical and economic feasibility of conversion to a higher voltage distribution

The proper selection of the voltage level combinations when uprating voltages in an existing distribution system is very important as this would result in significant economic savings. The paper discusses the effects of high-voltage and distribution system primary voltage on the system characteristics and performance as practised in the Turkish system. It is shown that a higher primary distribution voltage minimises the investments on the high-voltage system and a completely new primary distribution system provided that it is accompanied by some means of feeder automation