MV cable lifetime improvement analysis through transformer tap changes

Bojie Sheng, Faisal Peer Mohamed, Wah Hoon Siew, Brian G Stewart

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

32 Downloads (Pure)


Cable life depends mainly on the thermal stress, which relates to the current applied on the cable. Voltage changes in medium voltage (MV) cables due to transformer tap changes will also change the current flowing through the cable, which will change the cable temperature. In order to extend the cable life, this paper aims to simulate and analyse the potential thermal lifetime improvement of cables through long-term tap changes within the statutory levels. Firstly, the IEC standard (60287) method for rating and modelling cables is applied to evaluate the cable temperature under different voltages and relative currents. Different cable configurations will also be considered in simulations as temperature is dependent on the cable dimensions. Then, typical thermal lifetime analytical expressions will be used to evaluate the long-term influence of voltage changes. Lastly, the obtained thermal lifetime assessments under different transformer tap changes and different cable configurations will provide a potential understanding of cable lifetime changes through implementation of permitted regulatory voltage changes.
Original languageEnglish
Title of host publication2017 IEEE Conference on Electrical Insulation and Dielectric Phenomena
Place of PublicationPiscataway, N.J.
Number of pages4
Publication statusPublished - 15 Jan 2018


  • cable life
  • voltange changes
  • medium voltage cables
  • energy demand


Dive into the research topics of 'MV cable lifetime improvement analysis through transformer tap changes'. Together they form a unique fingerprint.

Cite this