Optimized reactive power characteristics for distributed generation sources in the low voltage network

Reactive power regulation of distributed generation sources in the low voltage network is by many professionals still considered as unnecessary, especially in the cable type networks. In this paper we show, that this is not true. We present optimized reactive power regulation characteristics of the distributed sources for the low voltage network. Characteristic is active power as well as voltage dependent with the aim of maintaining voltage in the low voltage network as constant as possible and at the same time minimizing network losses. Voltage ranges, reactive power regulation, distributed generation curtailments and reactive power characteristics comparison are analyzed and compared. Results clearly show that with proposed optimized reactive power characteristics of distributed generation sources in the low voltage network distributed generation active power curtailments are minimized, in majority of cases network losses are lowered and in the vast majority of cases voltage variations are smaller.