Interference Fit and Mechanical Property Computation of Silicone Rubber Accessory in HV Cable Joint

被引：0
|
作者：
Xie Q. [1 ]
Wang X. [1 ]
Fu M. [2 ]
Hui B. [2 ]
Liu T. [2 ]
机构：
[1] College of Civil Engineering, Tongji University, Shanghai
[2] Electric Power Research Institute, China Southern Power Grid Co., Ltd., Guangzhou
来源：
Xie, Qiang (qxie@tongji.edu.cn) | 2018年 / Science Press卷 / 44期
关键词：
Constitutive model; HV cable; Interfacial stress; Interference fit; Magnitude of interference; Silicone rubber accessory;
D O I：
10.13336/j.1003-6520.hve.20180131021
中图分类号：
学科分类号：
摘要：
The silicone rubber accessory in the cable joint is the weak part of the high voltage(HV) cable system. In order to study the influence of interference fit on the interfacial stress of the cable and accessory, uniaxial tensile tests were carried out on silicone rubber material and then the constitutive model was obtained. Then, based on a typical failure case, a cable connector was simplified as a theoretical model. The interference pressure was studied by theoretical analysis and finite element simulation. The results indicated that the maximum interfacial pressure could be observed at the location where the thickness of the semiconducting layer was greatest. The Yeoh model was suitable for the semiconducting layer and insulating layer rubber with high computational efficiency and robustness. In addition, the magnitude of interference and thickness of insulating layer would influence the interfacial stress, among which the magnitude of interference was the dominant factor. For this failure case, the interference magnitude increased by 0.01 m and the interfacial stress would increase by 0.17 MPa, while the insulating layer thickness increased by 0.01 m and the interfacial stress would increase by 0.006 5 MPa. So it is necessary to focus on controlling the magnitude of interference in the stress design of cable joint. © 2018, High Voltage Engineering Editorial Department of CEPRI. All right reserved.
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页码：498 / 506
页数：8
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