A Multi-Agent based Critical Load Restoration Using Islanded Operation of DGs in Radial Distribution Network

In low-voltage distribution systems, distributed generators (DGs) connected to radial distribution feeders can supply power to critical loads during major disasters. These networks are generally built by using low-inertia DGs that can adapt to changes of operation. Therefore, during disasters, the using of DGs for power restoration is a better choice to provide reliable power for critical loads. Irrespective of the low-inertia advantages of DGs, the disadvantage is that large load steps may cause system instability. Thus, a well-designed control method is necessary to make the system stable. This paper demonstrates a multi-agent system (MAS) based critical loads restoration method and emergency control strategy using the islanded operation of DGs. A modified IEEE 8 nodes distribution feeder system with two synchronous generators is developed in Matlab/Simulink. The simulation results show the effectiveness of the suggested model.