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Reducing the Number of Tests Cases for Reliability Assessment of Protective Relays
IEEE Transactions on Power Delivery, 2018This paper presents a methodology to perform application tests in protective relays. It is based on using the Gabriel graph to select, from a large number of events generated by a Monte Carlo-based procedure, a smaller subset that is able to predict the relay performance without compromising the quality of the estimator.
Joao R. Ricardo S. Souza +2 more
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Reliability Analysis of Relay Protection Based on the Fuzzy-Markov Model
International Journal of Hybrid Information Technology, 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 Assessment of the Digital Relay Protection System
2019The quantitative assessment attempt of reliability indicators for the specific digital structure of the relay protection system by analogy with an assessment of similar digital systems in other industries is given in this work. The reliability models of system components are provided. The calculation sequence is shown.
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Analysis of protection failure effect and relay coordination on reliability index
2014 The 1st International Conference on Information Technology, Computer, and Electrical Engineering, 2014A power system must be able to deliver the electric power even though some disturbance occurs. The failure of the protection system to localized fault can cause catastrophic failure of a system or blackout. In this research, an algorithm based on Monte Carlo simulations is proposed to obtain the reliability index that considers the overcurrent relay ...
I.G.N Satriyadi Hernanda +3 more
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Redundant Relay Protection Devices for Power Systems Reliability Model
2020 5th International Conference on Green Technology and Sustainable Development (GTSD), 2020The study’s purpose was to develop a mathematical model for the redundant RP systems functioning under health poll and to study the influence of RP failures on the RP reliability indicators. The study result was to find the dependence on the initial characteristics of such indicators as the unavailability factor, average time between failures in ...
Andrey Trofimov, Alexandra Khalyasmaa
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Reliability Analysis of Protective Relaying for 3rd Generation Smart Substation
2019 IEEE 8th International Conference on Advanced Power System Automation and Protection (APAP), 2019In this paper, the 3rd generation localization protection is different from the working environment of traditional protection system, which leads to the special structure of the localization protection device. This paper establishes the reliability analysis model of the grounding protection for the combination and operation characteristics of the ...
Lu Zhihao +3 more
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Reliability Assessment of Protective Relays in Harmonic-Polluted Power Systems
IEEE Transactions on Power Delivery, 2017Proliferation of distributed generations (DGs) and power-electronics-based loads is bringing about more harmonic-polluted power signals. While some failures may occur as a consequence of nonsinusoidal current or voltage waveforms, existing reliability models of protection relays have not taken the harmonic-related failures into consideration.
J. Jedrzejczak +4 more
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A Novel Markov Model for Protective Relay Reliability
IEEE Transactions on Power Delivery, 2023Xingzhu Wang +3 more
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Notice of Retraction Reliability analyses of digital protection relay system
2013 International Conference on Quality, Reliability, Risk, Maintenance, and Safety Engineering (QR2MSE), 2013With the development of substation automation technology entering the digital era, digital relay protection system become inevitable. Digital protection system has a series of advantages, but its reliability problem had not been concerned also. In this paper, the difference between digital relay protection and the conventional protection had been ...
Xia Tian +3 more
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Research on the Reliability of Power System Relay Protection
Foreign Language Science and Technology Journal Database Engineering Technology, 2022openaire +1 more source