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Operational determination of the point of a short circuit in power lines

open access: yesИзвестия высших учебных заведений: Проблемы энергетики, 2023
RELEVANCE. An urgent task is to improve the reliability and quality of power supply. Very often, failures in operation are caused by damage to overhead and cable lines.
K. V. Suslov   +3 more
doaj   +1 more source

Short-Circuit Fault Analysis of the Sen Transformer Using Phase Coordinate Model

open access: yesEnergies, 2021
The Sen Transformer (ST) provides an economical solution for power flow control and voltage regulation. However, fault analysis and evaluation of the performance of the transmission protection system in the presence of a ST have not been investigated ...
Liang Bu, Song Han, Jinling Feng
doaj   +1 more source

Experimental study on short-circuit current characteristics of a photovoltaic system with low voltage ride through capability under a symmetrical fault

open access: yesEnergy Reports, 2022
Large number of photovoltaic (PV) power plants connected to a power grid can bring significant impacts to fault currents and the operation of protection systems.
Shuai Yuan   +2 more
doaj   +1 more source

Impact of the Short-Circuit Current Value on the Operation of Overhead Connections in High-Voltage Power Stations

open access: yesEnergies, 2023
This paper focuses on determining the effects of short-circuit current values on the operation of high-voltage substations. The analyses performed focused on the dynamic and thermal effects on the short-circuit current for different input data ...
Łukasz Kozarek   +11 more
doaj   +1 more source

Forces and Stresses in the Windings of a Superconducting Fault Current Limiter

open access: yesEnergies, 2022
This paper presents the design of a Superconducting Fault Current Limiter (SFCL) and calculation results of forces and stresses in the windings of a resistive fault current limiter.
Janusz Kozak
doaj   +1 more source

EVALUATION OF THE EFFICIENCY OF THE DEVICE FOR LIMITING TENSION OF THE WIRE IN A SHORT CIRCUIT

open access: yesИзвестия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2017
The intensity of the electrodynamic action of currents of a short circuit on the flexible conductors of overhead lines depends on the magnitude of currents of short-circuit. The commis sioning of new capacities is inevitably accompanied by an increase in
I. I. Sergey   +2 more
doaj   +1 more source

Short‐circuit current difference of parallel strands in winding turns and its influence on the distribution of electromagnetic force

open access: yesIET Electric Power Applications, 2023
Transformer winding turns often consist of multiple parallel strands. The spatial position variation of each strand affects the leakage inductance of each branch, resulting in an uneven distribution of short‐circuit currents within the winding turns. And
Yi Zhao   +5 more
doaj   +1 more source

Verification Methodology for Simulation Models of the Synchronous Generator on Transients Analysis

open access: yesApplied Sciences, 2021
During transients that occur in an electric network, large currents can flow and large electromagnetic torques can be developed in electric generators. Accurate calculation of currents and magnetic fields during transients is an important element in the ...
Branko Tomičić   +3 more
doaj   +1 more source

Parametric design method and application study of a 160‐kV resistive‐type DCSFCL in a three‐terminal flexible DC transmission system

open access: yesIET Generation, Transmission & Distribution, 2023
The intermittent access of renewable energy sources leads to a significant increase in fault short‐circuit currents in power grid. DC superconducting fault current limiters (SFCL) can limit short‐circuit currents in flexible DC transmission systems ...
Jianfa Wu   +7 more
doaj   +1 more source

Comparative Analysis of High-Voltage Power Line Models for Determining Short-Circuit Currents in Towers Earthing Systems

open access: yesEnergies, 2021
The article deals with the problems of single-phase short-circuit current distribution in overhead power lines. Short-circuit disturbances cause many negative phenomena in power networks.
Rafał Tarko   +3 more
doaj   +1 more source

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