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176988

Microprocessor-Controlled Differential Protection of a Power Transformer.

Article

Last updated: 22 Jan 2023

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Tags

Electrical Engineering

Abstract

 The paper presents a developed algorithm or a digital filter for the Fast computation of the fundamental and higher harmonics of the differential current of a differential protected power transformer. The derived algorithm is based upon the discrete Fourier transform ( DFT). An estimation technique is used in the algorithm to compare the magnitude of the second-harmonic of the differential current with its fundamental content. Then a microprocessor trip command is given or blockad depending on the result of comparison. 
The proposed computation algorithm has been coded on a microprocessor unit. Necessary prephirals have been built to link the microprocessor to a complete differential protection scheme on a single-phase power transformer. The whole protective set-up is put into working order for test. 
Laboratory experimental investigations of performance of the protective scheme showed accurate discriminative operation of the relaying circuit for different abnormal conditions. The algorithm is simple, fast and highly discriminative and can be implemented in power system protection. 

DOI

10.21608/bfemu.2021.176988

Authors

First Name

Ahmed

Last Name

Hassan

MiddleName

Abdul-Maguid

Affiliation

Department of Electrical Engineering., College of Eng., University., of Basrah., Irag.

Email

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City

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Orcid

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First Name

Mustafa

Last Name

Ibrahim

MiddleName

Mohammed

Affiliation

Department of Electrical Engineering., College of Engineering., University of Basrah., Irag.

Email

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City

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Orcid

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Volume

10

Article Issue

1

Related Issue

25502

Issue Date

1985-06-01

Receive Date

1985-04-16

Publish Date

2021-06-01

Page Start

93

Page End

100

Print ISSN

1110-0923

Online ISSN

2735-4202

Article File

BFEMU_Volume 10_Issue 1_Pages 93-100.pdf

PDF . 58.3kB

Link

https://bfemu.journals.ekb.eg/article_176988.html

Detail API

https://bfemu.journals.ekb.eg/service?article_code=176988

Order

6

Type

Research Studies

Type Code

1,205

Publication Type

Journal

Publication Title

MEJ. Mansoura Engineering Journal

Publication Link

https://bfemu.journals.ekb.eg/

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Article

Created At

22 Jan 2023