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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

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

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

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

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

Core technologies for hydropower digitalization within the Energy Internet framework: a mini-review

open access: yesFrontiers in Water
Hydropower, a cornerstone renewable energy source globally, is undergoing a transformative evolution through digitalization technologies within the emerging Energy Internet paradigm.
Tingxiang Cao   +5 more
doaj   +1 more source

Coordination of adaptive distance protection in transmission and wind farm collector lines under resistive fault conditions [PDF]

open access: yesInternational Journal of Industrial Electronics, Control and Optimization, 2020
Distance relays calculate the path impedance between the fault point and the relay location by sampling the voltage and current at the relay location. By using the ratio of the impedance estimated by the relay to the impedance of the line where the relay
Jamshid Barati   +2 more
doaj   +1 more source

Flexible protection architectures using distributed optical sensors

open access: yes, 2012
In this paper we describe recent developments in flexible protection schemes that make use of passive fibre Bragg grating (FBG) based transducers for the distributed measurement of voltage and current.
Nishida, Tomonori   +15 more
core   +1 more source

An unexpected alternative viologen electron mediator site in tungsten‐containing formate dehydrogenase

open access: yesFEBS Letters, EarlyView.
An unexpected alternative interaction site for ethyl viologen was identified in formate dehydrogenase 1 from Methylorubrum extorquens. Combined mutagenesis, kinetic analysis, and docking revealed that aromatic residues near an iron–sulfur cluster enable flavin mononucleotide‐independent electron transfer, offering a framework for engineering improved ...
Eleni G. Poloniataki, Yong Hwan Kim
wiley   +1 more source

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