Fault location in the outer sheath of power cables

  • Qian Wang State Grid Chongqing Electric Power Co. Chongqing Research Institute, Chongqing 401123, China
  • Chao Tang College of Engineering and Technology, Southwest University
  • Gaolin Wu State Grid Chongqing Electric Power Co. Chongqing Research Institute, Chongqing 401123, China
  • George Chen School of Electronics and Computer Science, University of Southampton, Southampton SO17 1BJ, United Kingdom

Abstract

With the development of power systems in recent years, the total amount of power cables in operation hasincreased greatly, and there are growing reports of cable failure. Cable failures may be due to various intrinsicor extrinsic factors and can lead to massive economic loss. With regard to high-voltage cables, such as 110 kVpower cables, there are very few accurate reports on the actual fault observed. This article first analyses thepossible causes of power cable outer sheath failure. It then introduces the bridge and step voltage methods,which are traditionally used for cable fault locating, and describes a new method for accurate fault locatingin 110 kV cables, which uses the bridge method to pre-locate the fault and then the step voltage method toaccurately determine the precise fault locating. Field testing confirms the applicability of the new method foraccurate fault locating in 110 kV power cables. The results shown in this article may provide a good referencefor the development of future research in related fields.

References

[1] C. Zhang, M. Li, M. Liu, J. Yao, Analysis on cable sheath
circulating current and imperfect grounding, Shandong
Electric Power 3 (2) (2009) 6–9.
[2] Y. Liu, The principle and method of trouble-locating for
electric cables, Guangdong Society for Electrical Engineering
10 (5) (2004) 47–57.
[3] L. Zhang, Discuss on the online monitoring of outer
sheath for electric cables, Value Engineering 2 (12) (2010)
217–218.
[4] Z. He, The fault analysis and forcast of the outer sheath of
HV single-core cable, Hubei Water Power 64 (2) (2006)
77–79.
[5] C. Apisit, A. Ngaopitakkul, Algorithm improvement to
predict fault location of simultaneous fault in underground
cable, IEEJ Transactions on Power and Energy
133 (11) (2013) 799–805.
[6] M. Li, B. Xu, Y. Zhang, A novel sheath fault locating
method for high voltage power cable, Proceedings of the
IEEE International Conference on Properties and Applications
of Dielectric Materials 1 (1) (2003) 195–198.
[7] Y. Tian, P. L. Lewin, A. E. Davies, S. J. Sutton, S. G.
Swingler, Partial discharge detection in cables using VHF capacitive couplers, IEEE Transactions on Dielectrics and
Electrical Insulation 10 (2) (2003) 343–353.
[8] S.-W. Min, S.-R. Nam, S.-H. Kang, J.-K. Park, Fault location
algorithm for cross-bonded cables using the singularity
of the sheath impedance matrix, Electrical Engineering
89 (7) (2007) 525–533.
[9] S. M. Helles, S. Hvidsten, G. Balog, K. M. Furuheim,
Calculation of water ingress in a HV subsea XLPE cable
with a layered water barrier sheath system, Journal of
Applied Polymer Science 121 (4) (2011) 2127–2133.
[10] A. J. Reid, C. Zhou, D. M. Hepburn, M. D. Judd,
W. H. Siew, P. Withers, Fault location and diagnosis in a
medium voltage EPR power cable, IEEE Transactions on
Dielectrics and Electrical Insulation 20 (1) (2013) 10–18.
[11] J. C. Del Pino-López, P. Cruz-Romero, A. Bachiller-
Soler, Screen selection for the power frequency magnetic
field shielding of underground power cables, Dyna
(Spain) 88 (1) (2013) 105–113.
[12] D. Liu, Discuss on the fault locating and repairing of the
outer sheath for HV cable, Power & Energy 6 (5) (2012)
143–144.
[13] Y. Xia, Cheaking and repairing methods of outer sheath
of HV cable, Electrotechnical Application 31 (6) (2012)
49–52.
[14] Z. Ju, Analysis and discuss on the fault type of outer
sheath of HV cable, Applied Science and Technology
13 (17) (2009) 253–254.
[15] J. Cui, Z. Liang, Trouble-locating method of non-metallic
electric sheath for hv cable, Electric Power 34 (2) (2001)
61–63.
[16] China Electric Power Research Institute, Beijing, Regulations
of condition-based maintenance & test for electric
equipment, Q/GDW 168-2008 (2008).
Published
2014-10-25
How to Cite
WANG, Qian et al. Fault location in the outer sheath of power cables. Journal of Power Technologies, [S.l.], v. 94, n. 4, p. 250--258, oct. 2014. ISSN 2083-4195. Available at: <https://papers.itc.pw.edu.pl/index.php/JPT/article/view/630>. Date accessed: 22 oct. 2021.
Section
Energy Engineering and Technology

Keywords

Power cable outer sheath, Fault locating, Bridge method, Step voltage method

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