Optimising the thermal environment and the ampacity of underground power cables using the gravitational search algorithm

Perović, Bojan; Tasić, D; Klimenta, Dardan; Radosavljević, Jordan; Jevtić, Miroljub; Milovanović, Miloš

doi:10.1049/iet-gtd.2017.0954

Cited by 10 publications

(9 citation statements)

References 18 publications

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“…lines at the crossing area are 1.1 m and 0.8 m, respectively. The value of 1.1 m corresponds to the optimal width of the cable bedding for the case of laying HV single-core cables in flat formation from [21], which is also in line with the values from [14]. The cable bedding height of 0.8 m is obtained by considering the height of the bedding-part below the lower cable line equals 0.1 m, and the height of the bedding-part above the upper cable line equals 0.4 m in relation to the axes of the cables; which is in accordance with [21] and [14].…”

Section: Resultssupporting

confidence: 80%

“…The value of 1.1 m corresponds to the optimal width of the cable bedding for the case of laying HV single-core cables in flat formation from [21], which is also in line with the values from [14]. The cable bedding height of 0.8 m is obtained by considering the height of the bedding-part below the lower cable line equals 0.1 m, and the height of the bedding-part above the upper cable line equals 0.4 m in relation to the axes of the cables; which is in accordance with [21] and [14]. Accordingly, the height of the bedding-part between the two cable lines is 0.3 m. For the first and second cable lines outside the cable crossing, the optimal height of their cable beddings is 0.5 m, while the ratio between the heights of the bedding-parts below and above the cables is the same as in the crossing area.…”

Section: Resultssupporting

confidence: 80%

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Increasing the ampacity of underground cable lines by optimising the thermal environment and design parameters for cable crossings

Perović¹,

Klimenta²,

Tasić

et al. 2022

IET Generation Trans & Dist

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The problem of optimising the thermal environment and design parameters of underground cable lines for cable crossings with the aim of increasing the ampacities of cables is considered in this paper. Particle swarm optimisation (PSO) algorithm, formulated as a continuous non‐linear optimisation problem with constraints, for solving this hot spot problem is applied. It is found, using the PSO algorithm, that there are a suitable size of cable bedding and an arrangement of cables within that bedding, which can eliminate or significantly mitigate the hot spot effect without the use of any additional cooling equipment. In this manner, the ampacities of both crossing cable lines increase by about 15% on average with respect to the case of a similar crossing with installation parameters commonly used. In addition, it is shown how the cross‐sectional areas of the conductors and metal screens and the metal screen bonding methods affect the optimal solution.

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Section: Resultssupporting

confidence: 80%

Section: Resultssupporting

confidence: 80%

Increasing the ampacity of underground cable lines by optimising the thermal environment and design parameters for cable crossings

Perović¹,

Klimenta²,

Tasić

et al. 2022

IET Generation Trans & Dist

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“…If the 110 kV underground cable line is already installed in accordance with fig. 2(b), if the cable trench is completely filled with quartz sand, and if it is planned to coat the pavement surface with, for instance, a cool pavement seal that costs about 3.7 $/m 2 and lasts up to 7 years [3,21], the appropriate repayment period can be reliably estimated for an electricity transmission tariff of 0.36 $c/kWh [22]. According to [3,21], two coats of a seal coating could cost an estimated 4440 $ per kilometer length of the cable line route.…”

Section: Resultsmentioning

confidence: 99%

Controlling the thermal environment of underground power cables adjacent to heating pipeline using the pavement surface radiation properties

Klimenta¹,

Perović²,

Klimenta³

et al. 2018

THERM SCI

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This paper shows how the pavement surface radiation properties can be used to control the thermal environment of 110 kV underground cables in order to increase their ampacity. It is assumed that the ampacity is additionally affected by the cable bedding size and an underground heating pipeline. Thanks to an experimental apparatus, some useful data were collected for the validation of two different finite element method based models that predict the effect of the pavement surface radiation properties on the cable ampacity. The first model corresponds to the experimental apparatus and actual indoor conditions, while the second one corresponds to the theoretical case and assumed outdoor conditions (taking into account the thermal effects of solar radiation, cable bedding size, and heating pipeline). This paper examines two possible cases of outdoor conditions, one corresponding to summer period (the most unfavorable ambient conditions) and another one corresponding to winter period (the most common winter conditions in Serbia). This proposed new method is based on the experimental data and generalized using the finite element method in COMSOL. It is found that the ampacity of the considered 110 kV cable line can be increased up to 25.4 % for the most unfavorable ambient conditions and up to 8 % for the most common winter conditions. [Project of the Serbian Ministry of Education, Science and Technological Development, Grant no. TR33046]

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“…10. The three main methods of laying the UGC are direct laying, draw-in system and solid system [88]. The advantages of UGC are its smaller voltage drops and low chances of developing faults, which ensures noninterrupted continuity of supply.…”

Section: ) Underground Cablementioning

confidence: 99%

Current and Future Communication Solutions for Smart Grids: A Review

et al. 2022

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A smart grid provides a bidirectional flow of electricity and information whilst ensuring wellbalanced electricity supply and demand. The key enabler for the smart grid is its robust communication infrastructure. Choosing the best communication technology for the smart grid is crucial as it involves a mixture of critical and non-critical traffic. This study provides a comprehensive review on smart grid communication and its possible solutions for a reliable two-way communication toward supporting diversified power grid applications. Existing networking methods along with their advantages and weaknesses are highlighted for future research directions. The communication network architecture in the smart grid, with details on each networking technology, switching methods and medium for data communication, is critically reviewed to identify the existing research gaps. A discussion on issues and challenges encountered in smart grid communication for current implementation is highlighted together with the recommendations for further improvement. Overall, the highlighted issues and recommendations from this study are useful to researchers, technology providers and industries to develop new communication technologies for the smart grid that will provide reliable, robust, and suitable two-way communication in the future.

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Optimising the thermal environment and the ampacity of underground power cables using the gravitational search algorithm

Cited by 10 publications

References 18 publications

Increasing the ampacity of underground cable lines by optimising the thermal environment and design parameters for cable crossings

Increasing the ampacity of underground cable lines by optimising the thermal environment and design parameters for cable crossings

Controlling the thermal environment of underground power cables adjacent to heating pipeline using the pavement surface radiation properties

Current and Future Communication Solutions for Smart Grids: A Review

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