IMMUNITY IMPROVEMENT OF A LOW-IMPEDANCE RESTRICTED EARTH FAULT RELAY BY MAKING ITS MECHANISM INTELLIGENT BASED ON SUPPORT VECTOR MACHINE

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EBADI ALI; HOSSEINI SEYYED MEHDI; ABDOOS ALI AKBAR

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Journal Paper

Paper Information

Journal: COMPUTATIONAL INTELLIGENCE IN ELECTRICAL ENGINEERING (INTELLIGENT SYSTEMS IN ELECTRICAL ENGINEERING) Year:2018 | Volume:9 | Issue:2 Page(s): 29-39

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Title

IMMUNITY IMPROVEMENT OF A LOW-IMPEDANCE RESTRICTED EARTH FAULT RELAY BY MAKING ITS MECHANISM INTELLIGENT BASED ON SUPPORT VECTOR MACHINE

Author(s)

EBADI ALI | HOSSEINI SEYYED MEHDI | ABDOOS ALI AKBAR | Issue Writer Certificate

Keywords

CURRENT TRANSFORMER SATURATIONQ2

RESTRICTED EARTH FAULTQ1

POWER TRANSFORMERQ2

SUPPORT VECTOR MACHINEQ2

Abstract

Low-impedance RESTRICTED EARTH FAULT (REF) relay is a unit of digital protection system of POWER TRANSFORMERs that its duty is detecting single phase to ground faults on the transformer terminal and turning it to core faults on its windings. It is a fast and sensitive type of protection schemes. However, during external fault with high magnitude fault currents and flowing magnetizing inrush current of POWER TRANSFORMER, due to Current Transformer (CT) saturation, it may be exposed to maloperation. In this paper, immunity improvement of a REF relay is shown by making its algorithm intelligent. To do so, in the first step, major parameters used in the operating characteristic of a conventional REF relay and neutral current are chosen to be employed as the training input of SUPPORT VECTOR MACHINE (SVM) classifier. Then, a sample power system including a POWER TRANSFORMER and related CTs is simulated by using PSCAD/EMTDC software under many different operating conditions involving internal fault, external fault, and inrush current. Finally, SUPPORT VECTOR MACHINE is trained using obtained simulation results and after validating its accuracy, is employed as the intelligent core of the new REF protection scheme.

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APA: Copy

EBADI, ALI, HOSSEINI, SEYYED MEHDI, & ABDOOS, ALI AKBAR. (2018). IMMUNITY IMPROVEMENT OF A LOW-IMPEDANCE RESTRICTED EARTH FAULT RELAY BY MAKING ITS MECHANISM INTELLIGENT BASED ON SUPPORT VECTOR MACHINE. COMPUTATIONAL INTELLIGENCE IN ELECTRICAL ENGINEERING (INTELLIGENT SYSTEMS IN ELECTRICAL ENGINEERING), 9(2 ), 29-39. SID. https://sid.ir/paper/203002/en

Vancouver: Copy

EBADI ALI, HOSSEINI SEYYED MEHDI, ABDOOS ALI AKBAR. IMMUNITY IMPROVEMENT OF A LOW-IMPEDANCE RESTRICTED EARTH FAULT RELAY BY MAKING ITS MECHANISM INTELLIGENT BASED ON SUPPORT VECTOR MACHINE. COMPUTATIONAL INTELLIGENCE IN ELECTRICAL ENGINEERING (INTELLIGENT SYSTEMS IN ELECTRICAL ENGINEERING)[Internet]. 2018;9(2 ):29-39. Available from: https://sid.ir/paper/203002/en

IEEE: Copy

ALI EBADI, SEYYED MEHDI HOSSEINI, and ALI AKBAR ABDOOS, “IMMUNITY IMPROVEMENT OF A LOW-IMPEDANCE RESTRICTED EARTH FAULT RELAY BY MAKING ITS MECHANISM INTELLIGENT BASED ON SUPPORT VECTOR MACHINE,” COMPUTATIONAL INTELLIGENCE IN ELECTRICAL ENGINEERING (INTELLIGENT SYSTEMS IN ELECTRICAL ENGINEERING), vol. 9, no. 2 , pp. 29–39, 2018, [Online]. Available: https://sid.ir/paper/203002/en

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