Influence of Distributed Generation on Distribution Network Performance during Network Reconfiguration for Service Restoration

The effect of location and sizing of distributed generation to the power losses and voltage profile during network reconfiguration for service restoration are investigated in this paper. The location of the distributed generation was identified using the pre-determined sensitivity indices, while evolutionary programming was used to determine the size of the installed distributed generations. The simulation was conducted by applying three phase fault at an identified location. After the fault is isolated, the network is reconfigured by changing the open/closed states of the tie lines and sectionalising switches for service restoration while minimising the total power losses in the network. Network reconfiguration was implemented using the TOPO application in the power system simulation programme for planning, design and analysis of distribution system (PSS/Adept). The simulation was conducted on the 69-bus distribution system.