Enhancement of Protection Scheme for Distribution System Using the Communication Network

One of the main challenges to design a proper protection scheme is the dynamic change in the architecture for the microgrid. The settings of the relays needs to be updated with every configuration in the system to isolate the fault. In this paper, a centralized control approach is proposed to monitor the modes of the microgrid and helping the relays to define the fault location and clear it from the system. The proposed technique helps to identify the shortest path from the source to the fault location. The Main Control Center (MCU) is responsible for adjusting the relays settings based on the current topology and the shortest path to the fault point. This technique is investigated on IEEE 14 bus microgrid system for all the possible fault paths. The proposed scheme is able to clear the fault by isolating the minimum part of the system and certifying the endurance of the power to supply the different loads in the system.