Contact Temperature Prediction in Three-Phase Gas-Insulated Bus Bars With the Finite-Element Method

Wu, Xiaowen; Ning, Shu; Li, Hong Tao; Li, Ling

doi:10.1109/tmag.2013.2282033

Cited by 27 publications

(10 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…В роботах [17]- [20] пропонується визначати електромагнітні параметри електротехнічних систем перетворення змінного струму на основі реалізації моделі електромагнітного поля для завдання в time step формулюванні. Такий підхід дозволяє враховувати нелінійність властивостей активних матеріалів, гармонійний склад струмів і напруг, але вимагає значних витрат часу на чисельну реалізацію через необхідність збіжності розрахунку кожного часового шару.…”

Section: аналіз досліджень і публікаційunclassified

“…Система рівнянь (1), (2) доповнюється умовами калібрування Кулона, умовами сполучення областей з різними електричними і магнітними властивостями і умовами електричної і магнітної ізоляції на зовнішніх межах реалізується методом кінцевих елементів в структурі засобів ПО COMSOL Multiphysics. Температурний режим шинопроводу розраховувався відповідно до [20].…”

Section: викладення основного материалу і аналіз отриманних резулunclassified

See 1 more Smart Citation

Analysis of the Shop Networks Basburs Parameters at Higher Harmonic Current Actions

Bezverkhnia¹,

Kotsur²,

Yarymbash³

et al. 2019

E&E

View full text Add to dashboard Cite

Section: аналіз досліджень і публікаційunclassified

Section: викладення основного материалу і аналіз отриманних резулunclassified

Analysis of the Shop Networks Basburs Parameters at Higher Harmonic Current Actions

Bezverkhnia¹,

Kotsur²,

Yarymbash³

et al. 2019

E&E

View full text Add to dashboard Cite

“…Dhotre et al [9] developed electromagnetic fluid temperature simulation model for high-voltage circuit breaker, and analyzed its temperature rising characteristics, while symmetrical boundary conditions are proposed to simplify the model and to reduce the calculation burden. Additionally, Wu et al [10] built an electromagnetic-fluidthermal coupling simulation model for three-phase gas insulated bus and analyzed temperature distribution and characteristics, considering temperature characteristics of SF6 gas based on Sutherland's law.…”

Section: Introductionmentioning

confidence: 99%

“…Particularly, magneticthermal-fluid field is directly coupled and thermal-stress is sequentially coupled. In contrast, work [6][7][8][9][10] only considered current loss as heat source for thermal field without considering thermal influence on metal conductivity, which means the magnetic-thermal field is sequentially coupled rather than directly coupled.…”

Section: Introductionmentioning

confidence: 99%

Multi-Physical Coupling Field Study of 500 kV GIL: Simulation, Characteristics, and Analysis

et al. 2020

View full text Add to dashboard Cite

With the construction of a large number of hydropower stations, transmission lines crossing a river and urban utility tunnels, gas insulated transmission line (GIL) has been applied widely due to its large transmission capacity, low environmental impact and high reliability. Accurate modelling of physical quantities and their characteristics of GIL provides a theoretical basis for its design and operation, which is of great significance to ensure the safety and reliability of GIL operation. The mathematical model and their relationship of GIL multi-physical fields are analyzed at first, upon which simulation model of GIL is built. Secondly, multi-physical coupling field model of electric, magnetic, thermal, fluid and stress field for GIL is studied, while simulation results are basically in consistent with experimental data to verify effectiveness of the model. Thirdly, distribution of multi-physical fields and their relationship are simulated and analyzed, while proximity effect, edge effect and compression factor of GIL multi-physical field are discussed. The results show that the radial temperature inside GIL is higher at the top, lower at the bottom, leading to uneven distribution of thermal expansion displacement, while the axial temperature distribution is basically uniform, which falls firstly and then rises near basin insulator thus results in edge effect. Proximity effect leads to asymmetric distribution and a slight increase of temperature inside GIL as well as a dramatic increase of air velocity around GIL. In addition, when ambient temperature is lower than-5 ℃, the compression factor is much lower than 1 and the effect of compression factor should be considered in simulation. INDEX TERMS GIL, multi-physical coupling field, finite element method, multi-physical characteristics. I.

show abstract

“…Several numerical and analytical methods have been studies in the past few years, among which [12]- [14] made steady-state and transient analyses, while a 2D analysis was carried out in both [15] [16]. Because of the slow transient thermal characteristic and fast electric transients of busbars, the temperature change caused by a fast and periodic change current can be ignored [17] [18]. A laminated busbar design and a stray parameter analysis of three-level converters based on the HVIGBT series connection were conducted in [19] to provide a practical method.…”

Section: Introductionmentioning

confidence: 99%

Improvement on the Laminated Busbar of NPC Three-Level Inverters based on a Supersymmetric Mirror Circulation 3D Cubical Thermal Model

He¹,

Xu²,

Geng³

2016

Journal of Power Electronics

View full text Add to dashboard Cite

Laminated busbars with a low stray inductance are widely used in NPC three-level inverters, even though some of them have poor performances in heat equilibrium and overvoltage suppression. Therefore, a theoretical method is in need to establish an accurate mathematical model of laminated busbars and to calculate the impedance and stray inductance of each commutation loop to improve the heat equilibrium and overvoltage suppression performance. Firstly, an equivalent circuit of a NPC three-level inverter laminated busbar was built with an analysis of the commutation processes. Secondly, on the basis of a 3D (three dimensional) cubical thermal model and mirror circulation theory, a supersymmetric mirror circulation 3D cubical thermal model was built. Based on this, the laminated busbar was decomposed in 3D space to calculate the equivalent resistance and stray inductance in each commutation loop. Finally, the model and analysis results were put into a busbar design, simulation and experiments, whose results demonstrate the accuracy and feasibility of the proposed method.

show abstract

Contact Temperature Prediction in Three-Phase Gas-Insulated Bus Bars With the Finite-Element Method

Cited by 27 publications

References 9 publications

Analysis of the Shop Networks Basburs Parameters at Higher Harmonic Current Actions

Analysis of the Shop Networks Basburs Parameters at Higher Harmonic Current Actions

Multi-Physical Coupling Field Study of 500 kV GIL: Simulation, Characteristics, and Analysis

Improvement on the Laminated Busbar of NPC Three-Level Inverters based on a Supersymmetric Mirror Circulation 3D Cubical Thermal Model

Contact Info

Product

Resources

About