Results 21 to 30 of about 5,648,704 (342)

Development of a ±660 kV DC transmission line arrester

open access: yesThe Journal of Engineering, 2019
In order to improve the lightning withstand level of ±660 kV DC transmission line in China, the authors had begun to develop the ±660 kV DC line arrester since 2014, which was developed successfully in 2016.
Shanqiang Gu   +6 more
doaj   +1 more source

Condition monitoring and severity estimation of rotor demagnetisation fault using magnetic flux measurement data

open access: yesIET Energy Systems Integration, 2021
This article studies and investigate the magnetic characteristics of a surface mounted permanent magnet (SPM)‐type brushless direct current (BLDC) motor when subjected to demagnetisation fault conditions.
Adil Usman   +2 more
doaj   +1 more source

Reformulation and generalisation of the air-gap element

open access: yesCoRR, 2023
published in ICS Newsletter (International Compumag Society)
Herbert De Gersem, Thomas Weiland
openaire   +2 more sources

Rotor loss and temperature variation under single and combined faults composed of static air‐gap eccentricity and rotor inter‐turn short circuit in synchronous generators

open access: yesIET Electric Power Applications, 2021
In this study, the rotor loss as well as the temperature variations due to the static air‐gap eccentricity (SAGE) and the rotor inter‐turn short circuit (RISC) in synchronous generators is presented.
Yu‐Ling He   +8 more
doaj   +1 more source

Study on clearance optimisation and altitude correction of 750 kV AC side for UHVDC converter transformer

open access: yesThe Journal of Engineering, 2019
AC system which ±800 kV converter station access to commonly used 500 kV voltage level. With the construction of the Northwest Energy Base, a large number of ultra-high-voltage direct current (UHVDC) project are constructing.
Yujian Ding   +3 more
doaj   +1 more source

Numerical Modelling for the Effect of Metal-mould Air Gaps on Shell Thickness in Horizontal Continuous Casting of Cast Iron [PDF]

open access: yesArchives of Foundry Engineering, 2023
This paper presents a numerical model for the horizontal continuous casting of cast iron (HCCCI). A computational three-dimensional (3D) steady-state, coupled with fluid flow and heat transfer simulation model was developed and validated against ...
A. Chawla, N.S. Tiedje, J. Spangenberg
doaj   +1 more source

Electric field analysis and structure design of the box of bird guard used in 220 kV transmission line

open access: yesThe Journal of Engineering, 2019
Bird activities including the defecation, nesting, and flight are easy to cause electrical faults of overhead transmission lines, study on the prevention measures of bird damage to transmission lines is of great significance to ensure the stable and ...
Yanjun Kuang   +4 more
doaj   +1 more source

An extended winding function model for induction machine modelling considering saturation effect

open access: yesIET Electric Power Applications, 2021
Winding function (WF) method is one of the electric machines modelling methods, which is used to simulate electric machines under different conditions.
Mehrdad Gholami   +2 more
doaj   +1 more source

Tower Air-gaps discharge characteristics and insulation coordination for UHV AC double-circuit line

open access: yesThe Journal of Engineering, 2019
In order to give out inverse V-type insulator tower air-gaps configuration of double-circuit UHV AC power transmission line, different distance air-gaps from high-voltage electrode to tower frame discharge tests of inverse V-string are carried out ...
Huo Feng, Nan Jing, Ye Qiming, Ma Yeming
doaj   +1 more source

Identification of slot discharges in rotating machine insulation system using variable frequency PD measurement

open access: yesHigh Voltage, 2018
Slot discharge studies are very important from the insulation diagnosis perspective. Further in practice, testing of rotating machines with power frequency requires sources which are quite bulky and costly.
Ramesh P. Nair   +3 more
doaj   +1 more source

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