Modelling and simulation of the ice melting process on a current-carrying conductor =

Péter, Zsolt

doi:10.1522/24695958

Cited by 10 publications

(16 citation statements)

References 23 publications

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“…For comparing conveniently, the simulated ice-melting times are calculated both by icicle-shaped model and by columnar model [8]. The relative difference between the simulated ice-melting time and the measured one is defined as…”

Section: Ice-melting Time (Imt) and Its Investigationmentioning

confidence: 99%

“…It is discussed with an emphasis on resisting the icing-accidents of power grid in China after the ice storm of 2008 [5]. A large number of studies concerning ice-melting modeling may be found in the literatures since 1950s when the ice-storm has been regarded as a threat to the power grid [6][7][8][9][10][11][12][13]. Refs.…”

Section: Introductionmentioning

confidence: 99%

“…Refs. [8,12] think that the cross-section shape of ice-melting is a domed rectangle, whose area can be calculated by the geometrical relationship between the conductor and the ice-layer. Thus the ice-melting time can be reckoned with a heat-balance equation.…”

Section: Introductionmentioning

confidence: 99%

“…Like refs. [8,12], refs. [6,9,11] assume that the cross-section shape of icing conductor is perfect circular.…”

Section: Introductionmentioning

confidence: 99%

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DC ice-melting model for wet-growth icing conductor and its experimental investigation

Fan

Jiang

Shu

et al. 2010

Sci. China Technol. Sci.

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Icicles are often formed under the downside surface of conductor in the wet growth icing of overhead power line. When the ice deposit around overhead power line is molten by Joule heat produced by current, the pattern of heat transfer of ice deposit with icicles is dissimilar to that without icicle, so the ice-melting model for the columnar icing conductor cannot be applied to icicle-shaped icing conductor. According to the heat-transfer characteristic of the icicle-shaped icing conductor, this paper puts forward a DC ice-melting model for the icicle-shaped icing conductor. Because this full model includes three-dimensional heat-transfer and interface movement, which cannot be solved in closed form, a finite element scheme in space-domain and a finite difference scheme in time-domain are employed to discretize the governing equations. Firstly the whole ice-melting process on the icicle-shaped icing conductor is simulated by this model. Then the simulated results are validated by ice-melting experiments in the artificial chamber. The study from the model and the experiments shows that the size and length of icicle as well as the space between the adjacent icicles are factors to affect ice-melting. With the shorter icicle space, the bigger icicle size and the longer icicle-length, the surface of ice layer is enlarged and then more heat is taken away by the convection and radiation, so the ice melting time will get longer. power line, icing, ice storm, ice melting, icicle Citation:Fan S H, Jiang X L, Shu L C, et al. DC ice-melting model for wet-growth icing conductor and its experimental investigation.

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Section: Ice-melting Time (Imt) and Its Investigationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Like refs. [8,12], refs. [6,9,11] assume that the cross-section shape of icing conductor is perfect circular.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

DC ice-melting model for wet-growth icing conductor and its experimental investigation

Fan

Jiang

Shu

et al. 2010

Sci. China Technol. Sci.

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“…Taking the literature [7], [8], for example, during the ice melting, when the thermal conductivity of gap is less than that of the ice, all of the generated heat is conducted away through the upper part of the ice layer above the conductor, and only the ice layer on the upper surface of conductor would melt. Therefore, the volume of melted ice can be obtained by the relation between the thickness of the ice layer and diameter of the conductor.…”

Section: Introductionmentioning

confidence: 99%

Simulation and Experimental Investigation of DC Ice-Melting Process on an Iced Conductor

Jiang

Fan

Zhang

et al. 2010

IEEE Trans. Power Delivery

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Ice melting with dc is one of the key technologies to prevent the Chinese power grid from ice storms. Especially after the severe ice storm in the southern part of China in early 2008, dc ice-melting technology has drawn more attention than ever before. However, there are few satisfactory methods to select correct parameters so the ice-melting project rarely achieves desired effects in some cases when applied in Hunan, Guizhou, and other provinces in China. Therefore, it is of great significance to develop a method to estimate parameters which is applicable in the practical situation for dc ice melting. To handle this, the factors, such as wind velocity, ambient temperature, current density and ice-layer thickness were analyzed and then a dc ice-melting model is put forward in this paper. Both the results of simulations and experiments show that the ice-melting process can be divided into three stages composed of temperature rising, ice melting, and ice shedding, among which the ice melting is the key stage consuming most of the ice-melting time. In this stage, an elliptic airgap is formed and widened gradually with an influence on the ice-melting time and the temperature of the conductor. The experiments in the artificial climate chamber demonstrate that the results of the presented model are consistent with those of the experiments generally, so it can be employed to estimate the parameters of ice melting in practical engineering as reference.

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Control scheme of the de‐icing method by the transferred current of bundled conductors and its key parameters

Jiang

Wang

Shu

et al. 2015

IET Generation, Transmission & Distribution

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Modelling and simulation of the ice melting process on a current-carrying conductor =

Cited by 10 publications

References 23 publications

DC ice-melting model for wet-growth icing conductor and its experimental investigation

DC ice-melting model for wet-growth icing conductor and its experimental investigation

Simulation and Experimental Investigation of DC Ice-Melting Process on an Iced Conductor

Control scheme of the de‐icing method by the transferred current of bundled conductors and its key parameters

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