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Development of 500-kV XLPE cables and accessories for long distance underground transmission line. Part 3: Electrical properties of 500-kV cables

Journal Article · · IEEE Transactions on Power Delivery
DOI:https://doi.org/10.1109/61.489315· OSTI ID:244793
 [1];  [2];  [3];  [4];  [5];  [6];  [7]
  1. Tokyo Electric Power Co. (Japan)
  2. Chubu Electric Power Co., Inc., Nagoya (Japan)
  3. Kansai Electric Power Co., Osaka (Japan)
  4. Furukawa Electric Co., Ltd., Tokyo (Japan)
  5. Sumitomo Electric Industries Ltd., Osaka (Japan)
  6. Hitachi Cable Ltd. (Japan)
  7. Fujikura Ltd., Tokyo (Japan)
+ Show Author Affiliations

500-kV XLPE-insulated cable with an insulation thickness of 27 mm has been developed for long-distance transmission lines. Basic studies on 500-kV XLPE cable have shown that contaminants in the insulation may be the factor determining electrical performance. This hypothesis is justified by the good correlation obtained between statistical estimations of the size of the largest contaminant in the insulation and the electrical characteristics of full-sized cables. Voltage-withstand and long-term tests have confirmed the design values for minimum breakdown stress, for AC and impulse voltage, and for the degradation coefficients.

OSTI ID:
244793
Report Number(s):
CONF-950727--
Journal Information:
IEEE Transactions on Power Delivery, Journal Name: IEEE Transactions on Power Delivery Journal Issue: 2 Vol. 11; ISSN ITPDE5; ISSN 0885-8977
Country of Publication:
United States
Language:
English

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Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
EHV AC SYSTEMS
ELECTRIC CABLES
ELECTRICAL INSULATION
PERFORMANCE
POWER TRANSMISSION LINES
UNDERGROUND POWER TRANSMISSION