Novel Dual-FCL Connection with Neuro fuzzy controller connected to smart grid with battery energy storage system

Abstract

The improving potential of power systems, bigger available fault currents may cause the existing circuit breakers to become under-rated. Extreme powerful pressure during serious faults may outcome in failing of circuit breakers to open. Larger fault currents may also negatively impact synchronization of the generators, reduce the life of electrical machines, or even cause complete failure of equipment. Fault present limiters (FCLs) are able to avoid all of these troublesome activities by restricting currents during faults and by improving the robustness of generator. The DUAL FCL positioning strategy is confirmed in a power network containing four buses in a ring agreement. The system receives power from turbo-generators (36 MW). This dual-FCL relationship decreases fault current efforts of the DG by 98.5% (from 41 to 1 kA), and preserves the circuit breakers within their duty limits when a three-phase fault happens at a bus linked with the DG. Otherwise, when a three-phase fault happens in the infinite system, this connection limits the fault present participation of the DG from 4.8 to 0.4 kA, and frequency oscillations of the DG from 0.14 to 0.01 Hz. The power continuity in the local network is improved; as the voltage sag at the bus linked with the DG is decreased by 98% during and after serious short-circuit faults. In this in order to control successfully Neuro-Fuzzy operator is used.