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INVESTIGATION OF ASYMETRIC MODES OF THREE-PHASE THREE LEGS PHASE SHIFTING TRANSFORMER WITH CONNECTION IN DELTA AND TWO ADDITIONAL WINDINGS [PDF]

open access: yesProblems of the Regional Energetics, 2014
The model of power three-phase three legs phase-shifting transformer with connection in delta and two additional windings is realized. Calculations and research of steady state asymmetric modes particularities of given transformer with such windings ...
Bosneaga V.A., Suslov V.M.
doaj  

Simulation study on converter transformer windings stress characteristics under harmonic current and temperature rise effect

open access: yesInternational Journal of Electrical Power & Energy Systems
High-frequency harmonic current leads to temperature increases and uneven stress distribution within ultra-high-voltage (UHV) converter transformer windings.
Jing Xu   +6 more
doaj   +1 more source

Method of ParametersDeterminationfor Multi-WindingTransformer Equivalent Circuitin the Form of Multi-BeamStar [PDF]

open access: yesProblems of the Regional Energetics, 2018
For the case of transformer with a number of windings four or more, the number of pair short-circuit impedances are morethan the number of beams of the corresponding star, which makes it impossible to obtain a sufficiently correct equivalent scheme in ...
Suslov V.M., Bosneaga V.A.
doaj   +1 more source

Localization of Dual Partial Discharge in Transformer Windings Using Fabry–Pérot Optical Fiber Sensor Array

open access: yesEnergies
The power transformer is one of the most critical core devices for energy exchange in power systems, and its safe and stable operation is directly related to the reliability of the power grid. Partial discharge is the main cause of insulation degradation
Feng Liu   +4 more
doaj   +1 more source

Design of Planar Transformer with DC Bus Converter for Airplane

open access: yesKongzhi Yu Xinxi Jishu, 2017
In consideration of the fact that 4 kW DC bus converter on airplane has large output current and the secondary winding of its transformer needs in parallel to bear high current, it designed a planner transformer.
XUE Kaichang, ZHONG Junjie, LONG Jiang
doaj  

COMPUTER SIMULATION OF A SUPERCONDUCTING TRANSFORMER SHORT-CIRCUIT

open access: yesInformatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska
High critical temperature superconductor power devices have unique characteristics that reduce energy losses during transmission and distribution of electricity. These superconductors allow for high current density, enabling the construction of smaller,
Leszek Jaroszyński
doaj   +1 more source

Induced Voltages Ratio-Based Algorithm for Fault Detection, and Faulted Phase and Winding Identification of a Three-Winding Power Transformer

open access: yesEnergies, 2014
This paper proposes an algorithm for fault detection, faulted phase and winding identification of a three-winding power transformer based on the induced voltages in the electrical power system.
Byung Eun Lee   +3 more
doaj   +1 more source

Investigation of Asymetric Modes of Three-phase Three - legs Phase-shifting Transformer with “Inverse Double Zigzag” Scheme of Windings Connections and Commutation in Neutral Point [PDF]

open access: yesProblems of the Regional Energetics, 2015
The model for power three-phase three limbs phase-shifting transformer with “inverse double zig-zag connection” was investigated. Calculations and research of steady state asymmetric modes of transformer with such windings connection were fulfilled ...
Bosneaga V.A, Suslov V.M.
doaj  

Simulation of checking of mechanical state of the transformer windings by nanosecond impulse.

open access: yesMATEC Web of Conferences, 2014
The detailed electrical model of the transformer windings was developed. The possibility of detecting negligible changes in the geometrical pattern of the windings was investigated by testing of the impulses with nanosecond rising edge.
Semenov A.S.   +3 more
doaj   +1 more source

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