Results 1 to 10 of about 140 (122)

Once again on loading and capacity selection of autotransformers in transmission grids [PDF]

open access: yesE3S Web of Conferences, 2023
The aspects which have a bearing upon selection of capacity of autotransformers, such as load graphs, permissible temperature characteristics, n-1, n-2 modes, are considered.
Vasilenko Nikita   +2 more
doaj   +1 more source

Investigation of Steady State Two-Phase Short Circuit Modes Of Phase-Shifting Autotransformer with Hexagon Scheme and with Adjusting Autotransformer [PDF]

open access: yesProblems of the Regional Energetics, 2023
The purpose of work is to investigate two - phase short-circuiting modes of new autotransformer FACT’s - type device and is intended for power systems flexible connection.
Bosneaga V., Suslov V.
doaj   +1 more source

Calculation of protection function settings of new elements of the 500 kV transmission system [PDF]

open access: yesZbornik Radova: Elektrotehnički Institut "Nikola Tesla", 2022
In the paper the protection function setting calculations for elements of the transmission system are shown. Analyzed transmission system consists of the 500 kV and 230 kV voltage levels.
Sučević Nikola
doaj   +1 more source

Evaluation of ability to withstand short circuit and development of large capacity 500 kV autotransformer

open access: yesIET Electric Power Applications, 2023
Once the short circuit damage accident of a large capacity 500 kV transformer occurs suddenly, it will seriously affect the safe operation of the power grid.
Zhongxiang Li   +7 more
doaj   +1 more source

Actions to Handle Increasing Distributed Generation and Rising Voltage during Low-Demand Periods: Tap Staggering Practices and Field Tests in the Italian Transmission Network

open access: yesEnergies, 2023
This paper deals with the voltage regulation strategies implemented in the Italian transmission network to face the increasing problem of high voltages during time periods characterized by low demand.
Stefano Quaia   +3 more
doaj   +1 more source

Experimental evaluation of the limit condition for tap-staggered autotransformers through noise and vibration analysis

open access: yesEnergy Reports, 2022
The growing demand for electric energy and the development of green sources such as photovoltaic and wind power are requiring the integration of new systems in the already developed transmission network.
Edoardo A. Piana   +3 more
doaj   +1 more source

OPTIMIZATION OF DESIGN PARAMETERS OF AUTOTRANSFORMERS IN ICE MELTING SCHEME WITH NON-INDUCTIVE CIRCUIT ON 6-10 KV OVERHEAD POWER LINES

open access: yesElectrical engineering & Electromechanics, 2019
Purpose. The purpose of the paper is to determine the basic electrical characteristics and to develop a calculation method and algorithm for optimizing the design parameters of autotransformers intended for use in a melting ice scheme with a non ...
O. P. Lazurenko   +4 more
doaj   +1 more source

Statistical analysis amplitude-frequency characteristics of power transformer windings in operation

open access: yesИзвестия высших учебных заведений: Проблемы энергетики, 2017
In the work is given a statistical analysis of power transformer’s testing results obtained by using frequency response analysis method. The research has been done from the amplitude-frequency characteristics of low voltage windings for twelve ...
M. .. Ndayizeye   +2 more
doaj   +1 more source

Optimal design of a new step-down 18-pulse autotransformer

open access: yes工程科学学报, 2017
Aiming at the requirement for voltage regulation with a 18-pulse autotransformer-rectifier, a novel step-down 18-pulse topology was designed and optimized based on the advantage of present topologies.
NIU Lan   +3 more
doaj   +1 more source

Efficient Zero-Sequence Impedance Measurement in Autotransformers Using Low-Voltage Excitation

open access: yesApplied Sciences, 2023
In accordance with the IEEE standard, the zero-sequence impedance test of transformers necessitates an open or short circuit test on the high-voltage side winding.
Min Zhang   +6 more
doaj   +1 more source

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