Protection Coordination Index Assessment Using Fuzzy Logic Controller

This paper proposes the assessment method of the protection coordination index (PCI) for overcurrent protection relay and upstream relay. The protection coordination index is an indicator of how properly the equipment is protected by protective relay. The PCI is used to check the appropriateness of...

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Main Authors: Choong-Koo Chang, Ahmed Mohamed Elmashtoly
Format: Article
Language:English
Published: MDPI AG 2022-02-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/15/4/1377
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author Choong-Koo Chang
Ahmed Mohamed Elmashtoly
author_facet Choong-Koo Chang
Ahmed Mohamed Elmashtoly
author_sort Choong-Koo Chang
collection DOAJ
description This paper proposes the assessment method of the protection coordination index (PCI) for overcurrent protection relay and upstream relay. The protection coordination index is an indicator of how properly the equipment is protected by protective relay. The PCI is used to check the appropriateness of the protection coordination for both the component-wise and pair-wise. The protection index of each protection component of the integrated digital relay is assessed by a fuzzy logic controller. Then the device-level protection index and the composite protection coordination index between up and downstream relays are also assessed. Since the setting criteria of the overcurrent relays are given in a certain range rather than a crisp value, it is difficult to indicate the protection level of the protective system as an index. Currently, there is no way of knowing how well the overcurrent relay setting is. Thus, a method was proposed to evaluate the protection index of overcurrent systems using fuzzy logic. This is the unique research result of this paper.
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spelling doaj.art-531913ae51d24e0ab140bdb6502616e12023-11-23T19:43:02ZengMDPI AGEnergies1996-10732022-02-01154137710.3390/en15041377Protection Coordination Index Assessment Using Fuzzy Logic ControllerChoong-Koo Chang0Ahmed Mohamed Elmashtoly1Department of Nuclear Power Plant Engineering, KEPCO International Nuclear Graduate School (KINGS), 658-91 Haemaji-ro, Seosang-myeon, Ulju-gun, Ulsan 45014, KoreaDepartment of Nuclear Power Plant Engineering, KEPCO International Nuclear Graduate School (KINGS), 658-91 Haemaji-ro, Seosang-myeon, Ulju-gun, Ulsan 45014, KoreaThis paper proposes the assessment method of the protection coordination index (PCI) for overcurrent protection relay and upstream relay. The protection coordination index is an indicator of how properly the equipment is protected by protective relay. The PCI is used to check the appropriateness of the protection coordination for both the component-wise and pair-wise. The protection index of each protection component of the integrated digital relay is assessed by a fuzzy logic controller. Then the device-level protection index and the composite protection coordination index between up and downstream relays are also assessed. Since the setting criteria of the overcurrent relays are given in a certain range rather than a crisp value, it is difficult to indicate the protection level of the protective system as an index. Currently, there is no way of knowing how well the overcurrent relay setting is. Thus, a method was proposed to evaluate the protection index of overcurrent systems using fuzzy logic. This is the unique research result of this paper.https://www.mdpi.com/1996-1073/15/4/1377fuzzy logic controllerovercurrent relayprotection indexprotection coordination indexprotection level assessment
spellingShingle Choong-Koo Chang
Ahmed Mohamed Elmashtoly
Protection Coordination Index Assessment Using Fuzzy Logic Controller
Energies
fuzzy logic controller
overcurrent relay
protection index
protection coordination index
protection level assessment
title Protection Coordination Index Assessment Using Fuzzy Logic Controller
title_full Protection Coordination Index Assessment Using Fuzzy Logic Controller
title_fullStr Protection Coordination Index Assessment Using Fuzzy Logic Controller
title_full_unstemmed Protection Coordination Index Assessment Using Fuzzy Logic Controller
title_short Protection Coordination Index Assessment Using Fuzzy Logic Controller
title_sort protection coordination index assessment using fuzzy logic controller
topic fuzzy logic controller
overcurrent relay
protection index
protection coordination index
protection level assessment
url https://www.mdpi.com/1996-1073/15/4/1377
work_keys_str_mv AT choongkoochang protectioncoordinationindexassessmentusingfuzzylogiccontroller
AT ahmedmohamedelmashtoly protectioncoordinationindexassessmentusingfuzzylogiccontroller