Analytical Calculation of Coupled Magnetothermal Problem in Gas Insulated Transmission Lines

Sun, Guangling; Jin, Xiangchao; Xie, Zhihui

doi:10.12928/telkomnika.v11i4.1150

Cited by 2 publications

(6 citation statements)

References 10 publications

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“…Let us consider the operating temperature of the three-phase high-current busduct presented in Figure 1. At a steady state, the heat generated and dissipated in the three-phase high-current busduct satisfies the following equations [12,13,28]:…”

Section: Magneto-thermal Modelingmentioning

confidence: 99%

“…where P and P e are the power losses in the phase conductor and in the enclosure, respectively, Q C and Q eC are the convection heat transfer of the phase conductor and the enclosure, respectively, and Q R and Q eR are the radiation heat transfer of the phase conductor and the enclosure, respectively. For the phase conductor, the convection and radiation heat transfer are [12,13,28]…”

Section: Magneto-thermal Modelingmentioning

confidence: 99%

“…Until recently, no critical failure has been reported from any installation in the world [18]. GILs have several advantages, such as low transmission losses and high transmission efficiency, low capacitive load, low electromagnetic field, high reliability, no electric and thermal aging, low environmental influence and a high level of safety concerning surrounding equipment or nearby personnel [21][22][23][24][25][26][27][28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

“…In the last three decades, the prediction of the operating temperature of high-current busducts has been the subject of a number of investigations [7,8]. Most of them deal with specific busduct configurations [4,5,10,[12][13][14][15]17,27,28,31]. The heating of busducts has been studied both numerically and experimentally.…”

Section: Introductionmentioning

confidence: 99%

“…The heating of busducts has been studied both numerically and experimentally. In many cases, the problem has been formulated as a magneto-thermal one, linking the busduct ampacity with the operating temperature [5,[9][10][11]21,22,28]. In this contribution, an analytical method to determine the temperature of a tubular high-current busduct with isolated phases was proposed.…”

Section: Introductionmentioning

confidence: 99%

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Determination of the Operating Temperature of the Gas-Insulated Transmission Line

2020

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Gas-insulated lines (GILs) have been increasingly used as high-current busducts for high-power transmission. Temperature is one of the most important factors affecting the performance and ampacity of GILs. In this paper, an analytical method was proposed to determine the temperature of a three-phase high-current busduct in the form of a single pole GIL. First, power losses in the phase conductors and enclosures were determined analytically with the skin, and proximity effects were taken into account. The determined power losses were used as heat sources in thermal analysis. Considering the natural convection and radiation heat transfer effects, the heat balance equations on the surface of the phase conductors and the screens were established, respectively. Subsequently, the temperature of the phase conductors and the enclosures were determined. The validation of the proposed method was carried out using the finite element method and laboratory measurements.

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Section: Magneto-thermal Modelingmentioning

confidence: 99%

Section: Magneto-thermal Modelingmentioning

confidence: 99%