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High Reliability Relay Protection Setting Scheme of Distribution Network
2023 International Conference on Power System Technology (PowerCon), 2023Anning Wang
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Reliability assessment and improvement of digital protective relays
International Journal of System Assurance Engineering and Management, 2014The development of digital protective relays is considered as a real revolution in the field of power system protection. This is due to their wonderful features not available with older relay generations such as: multifunction, compactness, communication…etc.
Abdelkader Abdelmoumene +3 more
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Applying Reliability Centered Maintenance to a digital protective relay
2012 3rd IEEE PES Innovative Smart Grid Technologies Europe (ISGT Europe), 2012The implementation of Reliability Centered Maintenance (RCM) method can assist in achieving cost effectiveness, and allow a greater understanding of the risk level that organizations presently manage. This systematic method identifies the most applicable and effective maintenance plan to avoid each failure mode of the equipment. The work presented here
Helder Tavares +4 more
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Reliability testing and reliability analysis of the over-load protective relay
Journal of Zhejiang University-SCIENCE A, 2007The over-load protective relay is widely used for motor protection. The reliability of the over-load protective relay directly affects the safe running of a motor. The reliability testing and reliability analysis of the over-load protective relay is an important way to improve the reliability of products.
Jing-ying Zhao +4 more
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Increasing the Reliablity of the Measuring Circuits of Protection Relays
Power Technology and Engineering, 2016The primary current of a current transformer (CT) is calculated on the basis of the characteristics of the magnetization and the measured secondary current of the CT. This makes it possible to extend the linear range of operation of the measuring circuit of the protection and thereby increase the protection stability.
V. K. Vanin +3 more
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Methods of calculation of reliability of protective relay devices
Proceedings KORUS 2000. The 4th Korea-Russia International Symposium On Science and Technology, 2002A technique which accounts for the hardware reliability of devices and systems of protective relay of power systems is described. The model developed by the authors to account for reliability takes into account the work of functional and test diagnostic devices, and also checks of the serviceability of devices of protection after their refusal to ...
A.I. Shalin, A.V. Sholokhov
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The effect of Relay Protection on the Substation Reliability
2004This paper presents a model for evaluating the reliability of the substation actions after transmission grid faults. The model uses event and fault trees and later on it will be a part of the reliability model of the whole transmission grid. A comparison of different line protection systems by using the substation reliability model is included.
Pottonen, Liisa +2 more
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Application of Fuzzy Random Theory for Relay Protection Reliability
Advanced Science and Technology Letters, 2015Relay protection and safety device are regarded as the sentry of safe and reliable operation of the power grid. It plays a very important role in the power grid, and can determine whether the normal operation of the power system. This article considers the influence of the fuzzy uncertainty of relay protection failure rate to power system on the basis ...
Ganggang Hao +3 more
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Reliability analysis of protective relays in low voltage distribution network
2009 International Conference on Sustainable Power Generation and Supply, 2009A new reliability index is defined considering correct inaction, failure events and the failure probability of protected component in protective relays according to the risk theory. Relaying reliability is separated into the two different aspects of dependability and security in the calculation based on the losses resulted from failure events.
null Qingliang Wang, null Xiaojian Wang
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Formal Reliability Analysis of Protective Relays in Power Distribution Systems
2013Relays are widely used in power distribution systems to isolate their faulty components and thus avoid disruption of power and damaging expensive equipment. The reliability of relay-based protection of power distribution systems is of utmost importance and is judged by first constructing Markovian models of individual modules and then analyzing these ...
Adil Khurram +3 more
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