Mitigation of DOCR miscoordination through distance relays and non-standard overcurrent curves

Castillo, Claudia; Enrı́quez, Arturo Conde; Fernández, Erika

doi:10.1016/j.epsr.2018.06.012

Cited by 21 publications

(6 citation statements)

References 13 publications

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“…The used model of OC relays consists of five settings for coordination improvement during using the distance relay. The results reduce the number of not coordinated relays [2]. Economic and technical benefits of relays and fuses are integrated in the adaptive protection.…”

Section: Literature Reviewmentioning

confidence: 98%

Non Standard Overcurrent Relay for High Response With Self Backup Protection

Reda

Ibrahim²,

AbdelGawad

2022

Journal of Al-Azhar University Engineering Sector

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The ABB REF 615 relay model is an overcurrent and earth fault relay used to protect the feeder of the real radial system of 66/11 KV Egyptian Substation NO.7 in 10 th Ramadan. The main objective of this paper is to create non-standard characteristics in overcurrent relays to improve the response and to operate under its failing. In the proposed model, a combined setting is utilized and consists of NI and VI curves. The working area of overcurrent relay is divided into two areas. In the first area, the VI curve is operated as back up of NI curve and in the second area, the NI curve is operated as back up of VI curve. The simulation results are verified by ETAP software. The results prove that the developed model has two advantages. The first advantage is reducing the operating time by 40% over the conventional model. The second advantage is providing self back up protection in the relay and increases the protection level if any setting fails to operate.

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Section: Literature Reviewmentioning

confidence: 98%

Non Standard Overcurrent Relay for High Response With Self Backup Protection

Reda

Ibrahim²,

AbdelGawad

2022

Journal of Al-Azhar University Engineering Sector

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“…In these kinds, all the phases are short circuit to earth or to each other. These faults are considered as a balance case and giving a sense that the system remain symmetrical [19,20]. The bulks severe kind of fault is that included maximum current, for this reason, the calculations of balanced short circuit case are achieved to find these maximum currents.…”

Section: Symmetrical Faultsmentioning

confidence: 99%

Design and Implementation of Overcurrent Relay to Protect the Transmission Line

Ibrahim¹,

Ibrahim²,

Hamoodi³

2020

International Journal of Engineering Research and Technology

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“…In this case, the behavior of DOCRs in large networks included distance relays also becomes important. Reference [69] provides a solution for ensuring coordination between the distance protection and DOCRS under these conditions. In another similar study, Marcolino et al tried to provide optimal coordination using GA in a system where distance relay for phase-to-phase and DOCR for phase-to-ground failures [70].…”

Section: Zubic Et Al Presented a New Dr Algorithm Based On Maximum Overlap Discrete Wavelet Transform (Modwt)mentioning

confidence: 99%

Trends in Power System Protection Researches: A Review of Fundamental Relays

Onat

2018

Balkan Journal of Electrical and Computer Engineering

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Power system protection is one of the main element of modern energy management concept. The main task of these systems is to deactivate the faulty element or network part as soon as possible. The protection relays, called intelligent electronic devices, also have different functions than these basic functions. However, overcurrent, distance and differential protection are still used as the three basic components. In this study, current studies on these relays for coordination of the protection system have been analyzed. The research topic is limited to the main functions of the relays. Further study will examine the tasks that these relays have in providing data to the energy management system. It can also focus on the concept of wide area protection, event recording and modern communication protocols.

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Mitigation of DOCR miscoordination through distance relays and non-standard overcurrent curves

Cited by 21 publications

References 13 publications

Non Standard Overcurrent Relay for High Response With Self Backup Protection

Non Standard Overcurrent Relay for High Response With Self Backup Protection

Design and Implementation of Overcurrent Relay to Protect the Transmission Line

Trends in Power System Protection Researches: A Review of Fundamental Relays

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