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A Dynamic Rating System for Power Cables (I) - Real Time CTM(Conductor Temperature Monitoring)  

남석현 (LG전선 전력연구소)
이수길 (LG전선 전력연구소)
홍진영 (LG전선 Engineering Team)
김정년 (LG전선 전력연구소)
정성환 (한국전기연구원 전력연구단)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers A / v.52, no.7, 2003 , pp. 414-420 More about this Journal
Abstract
The domestic needs for larger capability of power sources are increasing to cope with the expanding power load which results from the industrial developments & the progressed life style. In summer, the peak load is mainly due to the non-industrial reasons such as air-conditioners and other cooling equipments. To cover the concentrated peak load in stable, the power transmission lines should be more constructed and efficiently operated. The ampacity design of the underground cable system is generally following international standards such as IEC287, IEC60853 and JCS168 which regards the shape of 100% daily full power loads. It is not so efficient to neglect the real shapes of load curves generally below 60~70% of full load. The dynamic (real time) rating system tends to be used with the measured thermal parameters which make it possible to calculate the maximum ampacity within required periods. In this paper, the CTM(Conductor Temperature Monitoring) which is the base of dynamic rating systems for tunnel environment is proposed by a design of lumped thermal network ($\pi$-type thermal model) and distribution temperature sensor attached configuration, including the estimation results of its performances by load cycle test on 345kV single phase XLPE cable.
Keywords
Dynamic Rating; Underground Cable; Ampacity;
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  • Reference
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