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Mathematical modeling and experimental research on grounding current calculation of converter transformer core

open access: yesMeasurement + Control, 2023
When the converter transformer core is grounded at multi-points, a fault loop will be formed and a circulation will be generated, leading to local overheating of the magnetic core and decomposition of insulating oil.
Xiu Zhou   +6 more
doaj   +2 more sources

Capacitive Filter Based HVDC Converter for Reducing the Vibration and Noise of Converter Transformer

open access: yesIEEE Access, 2022
Harmonic currents generated by converters in the HVDC system flow into the converter transformer. The harmonic current and voltage in the converter transformer will cause electromagnetic vibration of windings and iron core, which result in serious noise ...
Liang Zhao   +4 more
doaj   +2 more sources

High proportion and large value harmonic current influence on the magnetic field, loss and temperature distribution for ultrahigh voltage converter transformer

open access: yesIET Electric Power Applications, 2023
The temperature distribution of ultrahigh voltage (UHV) converter transformer is the key to its service life, allowable load and safe operation.
Cong Liu   +5 more
doaj   +2 more sources

Research on the dynamic characteristics of electric field distribution of the ± 1100 kV Ultra high voltage converter transformer valve‐side bushing using weakly ionised gas conductance model

open access: yesHigh Voltage, 2022
Ultra high voltage (UHV) converter transformer valve‐side bushings are the key equipment indirect current (DC) transmission projects, and are subjected to high voltage and large current with large number of harmonics simultaneously.
Qingyu Wang   +5 more
doaj   +2 more sources

Design Requirement and DC Bias Analysis on HVDC Converter Transformer [PDF]

open access: yesE3S Web of Conferences, 2021
The converter transformer plays a critical role in the high-voltage direct current (HVDC) transmission system, which connects but separates the AC grids and the converter.
Peng Weijian   +4 more
doaj   +1 more source

Analytical modeling and calculation of core grounding current in converter transformer

open access: yesFrontiers in Energy Research, 2023
In recent years, the calculation of the core grounding current of the converter transformer is difficult, low precision, and time-consuming, especially when the core is grounded by multiple points.
Xiu Zhou   +6 more
doaj   +1 more source

Research on finite element simulation of converter transformer core under multi-point grounding fault

open access: yesEnergy Reports, 2023
The converter transformer is an electrical equipment with a symmetrical structure. Due to its symmetry, the ground current should be small when the core is grounded at one point.
Xiu Zhou   +8 more
doaj   +1 more source

Comprehensive Overview on HVDC Converter Transformer Design: Additional Discussions to the IEC/IEEE 60076-57-129 Standard

open access: yesIEEE Access, 2022
HVDC is an economical and technical advantageous technology for power transmission through long distances, asynchronous interconnections and long submarine cables crossing.
M. V. Czernorucki   +4 more
semanticscholar   +1 more source

Calculation of inlet capacitance for long-duration induction voltage test of single-phase three-winding converter transformers

open access: yesEnergy Reports, 2023
The converter transformer is one of the core equipment in the high-voltage DC (HVDC) transmission project. The capacity of the converter transformer is much larger than that of an ordinary AC transformer, and its main function is to convert the AC system
Shijie Li   +5 more
doaj   +1 more source

Modelling of magnetostrictive vibration and acoustics in converter transformer

open access: yesIET electric power applications, 2021
Suman Yadav, Department of Electrical Engineering, North Eastern Regional Institute of Science and Technology, Nirjuli, Arunachal Pradesh, India.
Suman Yadav, R. K. Mehta
semanticscholar   +1 more source

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