Results 21 to 30 of about 2,307,869 (240)

Effect of non standard characteristics of overcurrent relay on protection coordination and maximizing overcurrent protection level in distribution network

open access: yesAlexandria Engineering Journal, 2022
This research employs the capabilities of 7SJ602 model (overcurrent and earth fault relay) for better performance and faster response. The Semiens 7SJ602 model is connected to the real radial system of an Egyptian Substation to protect the feeder ...
Abdallah Reda   +2 more
doaj   +1 more source

ДОСЛІДЖЕННЯ ПОХИБОК ТРАНСФОРМАТОРІВ СТРУМУ У СИСТЕМАХ РЕЛЕЙНОГО ЗАХИСТУ В УСТАЛЕНИХ ТА ПЕРЕХІДНИХ РЕЖИМАХ ЕНЕРГОСИСТЕМИ

open access: yesElektrotehnìka ta Elektroenergetika, 2016
Мета роботи. Визначення максимальних величин струмових та кутових похибок трансформаторів струму та характеру їх зміни в усталених та перехідних режимах енергосистеми, за яких можливий вихід величин похибок за межі діапазону нормованих значень, а також у
V. V. Nitsenko   +2 more
doaj   +1 more source

Application of evolutionary algorithms for optimal directional overcurrent relay coordination [PDF]

open access: yes, 2014
Includes bibliographical references.Relay coordination is necessary to ensure that while protection relays operate as fast as possible, they are also able to isolate only the faulted parts of the system from the network, ensuring that a power system ...
Stenane, Ndabeni Moses
core   +1 more source

Achieving full diversity in multi-antenna two-way relay networks via symbol-based physical-layer network coding [PDF]

open access: yes, 2013
This paper considers physical-layer network coding (PNC) with M-ary phase-shift keying (MPSK) modulation in two-way relay channel (TWRC). A low complexity detection technique, termed symbol-based PNC (SPNC), is proposed for the relay.
Lv, Tiejun   +4 more
core   +1 more source

Study of Coordination on Protection Relay in High Voltage Transmission 150 kV (Payakumbuh – Koto Padang, West Sumatra)

open access: yesMATEC Web of Conferences, 2018
The disturbance of the high voltage transmission can be caused by a short circuit, overload, lightning surge, and other natural disturbances. That disturbance can lead to disruption of the distribution of electricity and damage to the electric power ...
Zulkarnaini Zulkarnaini, Rizki Muhammad
doaj   +1 more source

The relay protection system’s composition in an intelligent substation.

open access: yes, 2021
The relay protection system’s composition in an intelligent substation.
Kai Yang (73590)   +2 more
core   +1 more source

Text-To-Text Transfer Transformer Based Method for Generating Startup Scenarios for New Equipment in Power Grids

open access: yesApplied Artificial Intelligence
Power grids often develop specialized startup plans for new equipment to standardize the commissioning process, which presents distinct challenges compared to other types of startup plans.
Wenbiao Tao   +7 more
doaj   +1 more source

Research on Power System Relay Protection Method Based on Machine Learning Algorithm [PDF]

open access: yesE3S Web of Conferences, 2019
With the development of power industry, there are gradually high permeability distributed energy systems. However, the existing relay protection is difficult to be effectively applied in this type of power system.
Fang Jingying, Zhang Xiangyun
doaj   +1 more source

Development of the mathematical model for operation of digital substations relay protection complexes

open access: yesОмский научный вестник, 2023
The issues of introduction of electrical digital substations in the Russian Federation are considered. An existing criteria analysis for assessing the modern relay protection devices efficiency is carried out and an assessment of their sufficiency is ...
A. V. Simakov   +2 more
doaj   +1 more source

Peculiarities of the relays intended for operating trip coils of the high-voltage circuit breakers [PDF]

open access: yesSerbian Journal of Electrical Engineering, 2007
Parameters of the subminiature electromagnetic relays used as output elements in microprocessor relay protection, do not correspond to technical specifications on these relay protection. The reasons of this discrepancy are analyzed.
Gurevich Vladimir
doaj   +1 more source

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