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Overview of 220kV XLPE cable system China application

Information Source:Henan Huadong Cable Co., Ltd Release date:2014-03-06

Domestic 220kV ~ 500kV EHV cable adopts tower production, has been put into operation 12 tower has 11 base tower has developed a 220kV cable, which has 5 seats with the production of 500kV cable, the 5 tower in Hebei Baofeng Cable Corporation has developed the 500kV cable, and in 2002 October in the Wuhan high the test cable. Production EHV cable tower crosslinking is imported production line, the two line is equipped with some tower.

EHV XLPE cable has a formal international standard, IEC 62067:2001 rated voltage of 150kV (Um=170kV) or 500kV (Um=550kV) Extrusion insulation power cables and accessories test methods and requirements. 220kV XLPE cable in China, the corresponding national GB/Z18890-2002 has on 2002-11-25 release, in 2003 June the formal implementation. In comparison with the corresponding standard 220kV ~ 500kV EHV cable IEC standard and national standard of China and other voltage level, the biggest difference is that, after passing through the EHV XLPE cable system type test, to be pre identification of a year (PQ) testing, qualified only after entering the network use.

Because the grid will use a large number of extra high voltage cable transmission, in order to ensure the safety and reliability of EHV cable into the power grid, the former state power company invested in arms high built EHV cable laboratory, laboratory can completely according to IEC standard and national standard of China for EHV cross-linking of a series of test cable and accessories, including factory test, test, type test sample, pre qualification test and the corresponding research test. All test equipment in the laboratory of computer measurement and control, imported the most advanced equipment. Have a large number of domestic and foreign to enter the EHV XLPE power cable and accessories test China grid operation.

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