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Релейная защита и противоаварийная автоматика района 220 кВ подстанции «Петровск - Забайкальск» - подстанции «Чита» Забайкальской энергосистемы [PDF]
, 2016 Объектом проектирования является релейная защита и автоматика линии 220 кВ «Петровск-Забайкальск– Чита» Забайкальской энергосистемы. Цель магистерской диссертации: разработать релейную защиту для линии и выполнить оценку экономической эффективности ...
Рощупкин, Евгений Викторович
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Coordinación óptima de elementos de protección en microredes [PDF]
, 2019 Tradicionalmente los sistemas de distribución han tenido una estructura radial, la cual impacta directamente en la coordinación de las protecciones empleadas.
Arbeláez Trejos, Daniela +1 more
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Improved protection system for phase faults on marine vessels based on ratio between negative-sequence and positive-sequence of the fault current [PDF]
, 2018 This paper presents a new method to protect the radial feeders on marine vessels. The proposed protection method is effective against Phase-Phase (PP) faults and is based on evaluation of the ratio between the negative-sequence and positive-sequence of ...
Bak, Claus +6 more
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Iranian Journal of Electrical and Electronic Engineering, 2015 Most studies in relay coordination have focused solely on coordination of overcurrent relays while distance relays are used as the main protection of transmission lines.
Y. Damchi, J. Sadeh, H. Rajabi Mashhadi
doaj
A novel scheme for current-only directional overcurrent relay
International Journal of Electrical Power & Energy Systems, 2016 Abstract Overcurrent relays are widely used as main protection in sub-transmission and distribution systems. In mesh and multi-source networks, application of directional relay is unavoidable. Traditional directional overcurrent relays use the reference voltage phasor as the polarizing quantity to estimate the direction of the fault.
Morteza Nojavan +2 more
openaire +1 more source
Hybrid mixed-integer non-linear programming approach for directional over-current relay coordination
The Journal of Engineering, 2019 This article proposes the optimal coordination problem of protective relays within a hybrid optimisation framework which is presented based on integer coded genetic algorithm (ICGA) and non-linear programming (NLP).
Mohammad Sadegh Javadi +4 more
doaj +1 more source
Improved Solutions for the Optimal Coordination of DOCRs Using Firefly Algorithm
Complexity, 2018 Nature-inspired optimization techniques are useful tools in electrical engineering problems to minimize or maximize an objective function. In this paper, we use the firefly algorithm to improve the optimal solution for the problem of directional ...
Muhammad Sulaiman +3 more
doaj +1 more source
Complexity, 2018 This paper presents the solution of directional overcurrent relay (DOCR) problems using Simulated Annealing based Symbiotic Organism Search (SASOS). The objective function of the problem is to minimize the sum of the operating times of all primary relays.
Muhammad Sulaiman +3 more
doaj +1 more source
Induction Motor Protection Systems [PDF]
Bakalářská práce je zaměřena na problematiku ochrany asynchronních strojů. Obsahuje základní informace o asynchronních strojích, metodách ochrany a diagnostiky jejich poruch.
Ibatullayev Aibek
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Opportunity for using WLAN with IEC 61850 and the future of this protocol [PDF]
, 2017 The unified protocols are unified in application interface, models, and seamless. They generate one standard protocol, one world called IEC 61850. IEC 61850 integrate the security, interoperability, modelling, mapping to a substation, and reliability ...
Aker, E. +5 more
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