Simulation research on eddy-current loss of cable trench structure of metal top pipe

Abstract

Eddy-current loss will cause waste of electric energy and affect service life of cable. In order to study the method of reducing eddy-current loss of cable trench in metal top pipe, a finite element simulation model was established. Firstly, influence factors of eddy-current loss were determined through a theoretical analysis, including arrangement mode of cable phase, top pipe size and cable distance. Finite element method was then used for optimal calculation of structure of cable trench and effective optimization design method was proposed. Results indicate that: for three-phase multiloop cable trench of metal top pipe, phase arrangement mode has important influence on eddy-current loss. For top pipe size, a comprehensive consideration of eddy-current loss and pipe stability should be taken in the thickness selection, and slotting position could only be at the position with maximum loss density. Both increase of distance between cable loop and top pipe and reduction of spacing between cables on the same loop will contribute to reduction of eddy-current loss of top pipe. Therefore, a cable trench structure commonly used in engineering was optimized and then its eddy-current loss was reduced by 70% effectively.

Keywords

Cable trench eddy-current loss finite element method optimization design

Get full access to this article

View all access options for this article.

References

Zhou

Zhao

Liu

Chen

and Zhang

, Key technical analysis and prospect of high voltage and extra-high voltage power cable, High Voltage Engineering 40(9) (2014), 2593–2612. doi: 10.13336/j.1003-6520.hve.2014.09.001.

Liu

and Luo

, Mathematical method of temperature calculation of power cable conduct or in real time, High Voltage Engineering 31(5) (2005), 52–54. doi: 10.13336/j.1003-6520.hve.2005.05.019.

Guillermo

Enrique

and Stephan

, Novel technique for the calculation of eddy current losses and Lorentz forces in foil winding transformers, International Journal of Applied Electromagnetics and Mechanics 55(1) (2017), 75–88. doi: 10.3233/JAE-160144.

Niu

Wang

and Zhang

, Study of ampacity of single-core cable based on iterative method, High Voltage Engineering 32(11) (2006), 41–44. doi: 10.13336/j.1003-6520.hve.2006.11.010.

Liu

and Cao

, Research and application of online temperature and load monitoring for power cables, Transmission and Distribution Technology 4(11) (2007), 11–14.

Zhen

and Ge

, Numerical calculation of ampacity for XLPE cables in cluster laying, High Voltage Engineering 36(2) (2010), 481–487. doi: 10.13336/j.1003-6520.hve.2010.02.030.

Wael

, Configuration optimization of underground cables for best opacity, Power Delivery IEEE Transactions on 25(4) (2010), 2037–2045. doi: 10.1109/TPWRD.2010.2046652.

Cheng

Xue

Zhou

Liu

and Yue

, Ampacity Calculation of 27.5 kV Single-phase single-core cross linked polyethylene power cables in electrified railways, High Voltage Engineering 38(11) (2012), 3067–3073.

Yuan

, The research on loss of metallic sheath and armored layer in high voltage submarine cable, Harbin University of Science and Technology, 2014.

10.

Zhu

, The research of the eddy current of cable bracket, Shanghai Electric Power 23(5) (2009), 400–402.

11.

Wang

C.C.

D.M.

Liu

and Peng

J.K.

, An improved optimal design scheme for high voltage cable accessories, Dielectrics and Electrical Insulation, IEEE Transactions on 21(1) (2014), 5–15. doi: 10.1109/TDEI.2013004102.

12.

Liu

and Pu

, The eddy current loss calculation and analysis of large cross-section cable hardware, Sichuan Electric Power Technology 38(4) (2015), 78–82. doi: 10.16527/j.cnki.cn51-1315/tm.2015.04.019.

13.

Grilli

Pardo

Stenvall

Nguyen

D.N.

Yuan

and Gömöry

, Computation of losses in HTS under the action of varying magnetic fields and currents, IEEE Trans. Appl.Supercond. 24(1) (2014), 78–110, doi: 10.1109/TASC.2013.2259827.

14.

Liu

and Liang

, Finite element mesh generation and decision criteria of mesh quality, China Mechanical Engineering 23(3) (2012), 368–377.

15.

Wei

and Cheng

, The analysis of FEM grid classification, Shanxi Science & Technology of Communications 5(5) (2007), 71–73.

16.

Yang

Gao

Chen

M.N.Y.

Wei

Peng

Q.J.

and Zou

L.F.

, Reactive power calculation of power cable under complex operation environment based on poynting vector, International Journal of Applied Electromagnetics and Mechanics 49(3) (2017), 375–385. doi: 10.3233/JAE-150013.

17.

Shen

Geng

Zhang

and Coombs

T.A.

, Optimization Study on the magnetic field of superconducting halbach array magnet, Physica C: Superconductivity and Its Application 538 (2017), 46–51, doi: 10.1016/j.physc.2017.05.009.

18.

Shen

Geng

Zhang

Grilli

and Coombs

T.A.

, Investigation of AC losses in horizontally parallel HTS tapes, Supercond. Sci. Technol. 30(7) (2017). doi: 10.1088/1361-6668/aa6fc2.

19.

Shen

Geng

Zhang

Dong

and Coombs

T.A.

, Investigation and comparison of AC losses on stabilizer-free and copper stabilizer HTS Tapes, Physica C: Superconductivity and Its Application 541 (2017), 40–44, doi: 10.1016/j.physc.2017.07.013.

20.

Damell

C.A.

Bacon

M.L.

and Shaw

R.A.

, Cable cleats-a global technique to protect three-phase single conductor cables during short-circuits, in: Fifty-first Annual Conference on Petroleum and Chemical Industry Technical IEEE (2004), pp. 143–150. doi: 10.1109/PCICON.2004.1352791.

21.

Anders

G.J.

Chaaban

Bedard

and Ganton

R.W.

, New approach to ampacity evaluation of cables in ducts using finite element technique, Power Delivery, IEEE Transactions on 7(10) (1987), 30–31. doi: 10.1109/MPER.1987.5526725.

22.

Gela

and Dai

J.J.

, Calculation of thermal fields of underground cables using the boundary element method, Power Delivery, IEEE Transactions on 3(4) (1988), 1341–1347, doi: 10.1109/61.193929.

23.

Wang

, Resesrch of new technologies of improving power cable capacity, North China Electric Power University, 2008.