Feeding Electricity Ring Grids with Minimum Interruption Using Fuzzy Logic Based Relay Coordination Scenarios Under Interruption Conditions

English (OpenAlex)

In order to secure continuous and high quality supply of electricity, it is essential to protect end users’ devices and network equipments against malfunction from production to consumption. Therefore, the protection of electrical equipment is essential and one of the devices performing the protection task is called the protection relay. Industrial plants and large consumers that possess a high variation in loads and variable generation resulting from the widespread implementation of distributed generation requires the adaptive operation of relays in protection systems to prevent undesired malfunctions. In this study, a novel fuzzy logic based adaptive relay coordination strategy with the advantages of reduced computational load and fast computing for distribution networks is proposed. In order to evaluate the performance of the developed relay coordination strategy, a real-world sample line for a ring-type distribution network has been simulated in PSCAD/EMTDC environment. The performance of the proposed system is validated with simulation results for different case studies.