Referenced Items are not available for this document.
Numerous power utilities have installed advanced distributed temperature sensing (DTS) systems to measure the temperature of underground cables. This paper presents a general procedure for real-time assessment of underground cable ratings based on DTS. After the identification and location of hot spots on a cable, the cable installation data, load, and DTS-recorded temperature over a period of time are used to estimate soil thermal parameters and assess cable ratings under normal and overloading conditions. In order to accurately estimate soil thermal parameters, a combined technique of the finite-element method and gradient-based optimization is used. The technique was validated in the laboratory and applied to a rating assessment of a 230-kV/500-MVA cable circuit. The assessed continuous and emergency ratings are helpful in improving the operation of this circuit
Published in:
Power Delivery, IEEE Transactions on
(Volume:21
,
Issue:
4
)
Date of Publication: Oct. 2006
- Page(s):
- 1763 - 1769
- ISSN :
- 0885-8977
- INSPEC Accession Number:
- 9105493
- Digital Object Identifier :
- 10.1109/TPWRD.2006.874668
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 02 October 2006
- Issue Date :
- Oct. 2006
- Sponsored by :
- IEEE Power & Energy Society
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