Design Method and Experimental Study of Water-Blocking Special-Shaped Wire Conductor for Submarine Cable
The design and manufacture of water-blocking conductor is one of the key research topics in field of submarine cable. A new theoretical design method is proposed for trapezoidal wire water-blocking conductor with structures of constant cross section, which has strong versatility and high programmabi...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
State Grid Energy Research Institute
2021-04-01
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| Series: | Zhongguo dianli |
| Subjects: | |
| Online Access: | https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.202009090 |
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| Summary: | The design and manufacture of water-blocking conductor is one of the key research topics in field of submarine cable. A new theoretical design method is proposed for trapezoidal wire water-blocking conductor with structures of constant cross section, which has strong versatility and high programmability, suitable for design and manufacturing of water-blocking conductor with a cross-section ranging from 50 mm2 to 3500 m2. The problems such as difficult design & manufacturing and unreasonable conductor size could be solved, with a filling coefficient of conductor reaching more than 0.96. Then, the rationality of the theoretical design method and manufacturing process is verified through water-blocking, mechanical and electrical performance tests. The trapezoidal wire conductor structure has no adverse effect on the cable’s overall performance, and the water-blocking glue conductor is better than that of the water-blocking tape structure. Finally, according to theoretical calculation, the outer diameter of the trapezoidal wire conductor for medium voltage submarine cables designed with the proposed method are 3.9% ~ 7.0% smaller than that of compact circular conductor, which can reduce the manufacturing cost by 1.1%. With the larger conductor cross-section, the structure optimization is more significant, which verifies the economy of submarine cables with trapezoidal wire conductor structure. |
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| ISSN: | 1004-9649 |