电力电缆接头处XLPE/EPDM双层接口的电气特性

Conference Record of the 1998 IEEE International Symposium on Electrical Insulation (Cat. No.98CH36239) Pub Date : 1998-06-07 DOI:10.1109/ELINSL.1998.704678

W. Choi, Jin-Yeol Yoon, Kang-Sik Park, Sang-Ok Han

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引用次数: 4

摘要

接口故障主要是电力电缆绝缘材料主要由双层结构组成，XLPE/EPDM层压在电缆接头上。制备了XLPE/EPDM层压板的界面，研究了其击穿和导电特性随热处理时间的变化规律。结果表明:在交联聚乙烯(XLPE)和三元乙丙橡胶(EPDM)生产过程中，特别是在热处理过程中，绝缘材料内部挥发性交联副产物(如苯乙酮、cumyl醇、/spl α /-甲基苯乙烯)对击穿强度和导电电流有影响。在较长的热处理时间内，XLPE/硅油(12500 cSt)/三元乙丙橡胶的击穿强度和传导电流比XLPE/润滑脂/三元乙丙橡胶更稳定。

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Electrical characteristics of the XLPE/EPDM double layered interface at the power cable joint

The main fault in the interface is that power cable insulating materials are mainly composed of a double layered structure, XLPE/EPDM laminates in cable joint. In this paper, an interface of XLPE/EPDM laminates was produced and the breakdown and conduction characteristics were investigated as a function of heat treatment time. The results showed that breakdown strength and conduction current were influenced by volatile crosslinking by-products (e.g. acetophenone, cumyl alcohol, /spl alpha/-methyl styrene) which remained inside the insulating material during the production of XLPE and EPDM, especially during the heat treatment process. The breakdown strength and conduction current of XLPE/silicone oil (12500 cSt)/EPDM was more stable than XLPE/Grease/EPDM over long heat treatment times.

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来源期刊

Conference Record of the 1998 IEEE International Symposium on Electrical Insulation (Cat. No.98CH36239)

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