Optimal relay performance using advanced fault diagnostic techniques

Abstract

This paper describes application of Artificial Intelligence (AI) methods in the diagnostic operation of the protective relays in power system with a particular emphasis on neuro-fuzzy method, as a viable enhancement to the existing classical protection technique in use on the Nigeria's national grid. The proposed method is simulated to showcase its advantages over the existing methods. It will not replace the latter but rather serves as a means of improving its reliability as a protection scheme.This work can also be applied to any other complex power system spread over a wide geographical area like Nigeria's.

A Smart Strategy for Blocking the Distance Protection Function during VT Fuse Failure

“…The basic operation logic of the protection system is depending on the fault current, voltage value and locations. The power flow from the generation to the utility grid is a high dynamic network connecting via OHTL [6].…”

Advanced Control Techniques for Enhance the Power System Stability at OOS Condition

“…So, it is possible to simulate faults along the OHTL which ranges from conduction that failure to loss of insulation [3] . Power Swing Condition (PSC) can be defined as a variation in three phase power equalized for voltage and also three phase current flow [4] . The power flow from generator to the grid is a high dynamic network connecting via OHTL.…”