Limitation of fossil fuels and the environmental
constraints established by the Kyoto Protocol and other
governmental initiatives caused the allocation of distributed
generation (DG) to be a vital pillar in power system planning.
Improper selection of the sizing and siting of DG systems can
reduce their advantages. Network reconfiguration problem is to
find a best configuration of distribution systems that gives
minimum energy loss with satisfying the imposed operating
constraints. This paper investigates the effect of load model on
DG allocation and network reconfiguration problems. The
proposed algorithm implemented and tested on the 25-bus
unbalanced distribution system and the impact of load models is
demonstrated. The constraints involved include voltage limits,
line current limits, and radial topology.