HEAT TESTS OF POWER CABLES WITH XLPE INSULATION AT DIRECT VOLTAGES UP TO 110 KV
DOI:
https://doi.org/10.20998/2074-272X.2015.6.07Keywords:
power cable, XLPE-cables, heat testAbstract
In this paper, experiment for determining the temperature difference between the elements of cable and in the open air is considered. The formation of a three cables laid in a plane with different spacing between adjacent cables. Tests to heat of cables for XLPE-polyethylene are used as a solid dielectric insulation. The line to XLPE-cables in group running horizontally, provided that the cables are of equal diameter and emit equal losses. It is limited to the following: the air flow around the cables may be necessary restricted by proximity to next cables. When single-core cables are installed in parallel the load current may not share equally between the parallel cables. This is because a significant proportion of the impedance of large conductors is due to self reactance and mutual reactance. Hence the spacing and relative location of each cable will have an effect on the current sharing. Calculation for each cable configuration is necessary. Possibility of using for determining the thermal properties of XLPE-cables a sheath applied over the cable surface with coefficient convection heat transfer between cable surface and the air region about it of equal zero. The work is devoted to creation of a method for calculation of the current rating of high-voltage cables in conditions function.References
Karpushenko V.P., Shchebeniuk L.A., Antonets Yu.O., Naumenko O.A. Sylovi kabeli nyz'koyi ta seredn'oyi napruhy. Konstruyuvannya, tekhnolohiya, yakist' [Power cables of low and medium voltage. Designing, technology, quality]. Kharkiv, Region-inform Publ., 2000. 376 p. (Ukr).
IEC 60287-1-1: 2001. Electric cables. Calculation of the current rating. Part 1-1: Current rating equations (100% load factor) and calculation of losses – General. – 65 p.
SIGRE № 303 «Revision of qualification procedures for high voltage and extra high voltage AC extruded underground cable systems», 2006.
IEC 60287-2-1: 2001. Electric cables. Calculation of the current rating. Part 2-1: Thermal resistance – Calculation of thermal resistance. – 84 p.
IEC 62067: Ed. 1.1b: 2006. Power cables with extruded insulation and their accessories for rated voltages above 150 kV (Um = 170 kV) up to 500 kV (Um = 550 kV) – Test methods and requirements. – 90 p.
HD 632 S1: 1998. Power cables with extruded insulation and their accessories for rated voltages above 36 kV (Um = 42 kV) up to 150 kV (Um = 170 kV) Part 2: Additional test methods.
Shchebeniuk L.A., Antonets T.Yu. To determine the capacity of high-voltage power cables with plastic insulation. Visnyk NTU «KhPІ» – Bulletin of NTU «KhPІ», 2011, no.3, pp. 152-157. (Ukr).
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Copyright (c) 2015 T. Yu. Antonets, Yu. M. Vepryk, L. A. Shchebeniuk
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