Enhancement of voltage stability index of distribution system by network reconfiguration including static load model and daily load curve

The topology of distribution network can be modified time to time using sectionalizing and tie-switches for enhancement of voltage stability index to minimize system losses. This will also improve the voltage profile of each node. This paper proposes a novel method for hourly switching action for 16-node and 33-node radial distribution network for a single day by feeder reconfiguration considering static load model. At each node different load is considered. The active and reactive power of these loads are dependent on voltage magnitudes. The result shows that minimum voltage stability index is found at node where it has low voltage profile and higher losses.