乙丙橡胶绝缘中因气泡引起的局部放电研究

摘要：

With the primary advantages of flexibility and an inherent resistance to failures caused by electrochemical degradation, Ethylene-Propylene Rubber (EPR) cables have been widely used in special fields, e.g. coal mine, oil production and submarine cable. However, the cables insulated with EPR will inevitably contain some defects. Cavities are one of the typical defects resulting in partial discharges (PDs) in extruded power cables. The cavity is of a lower relative dielectric permittivity of εr=1 than insulation materials (e.g. s, of cross-linked polyethylene (XLPE) included the spherical cavity is 2.3). As shown in Figure 1, the strength enhancement of the ellipsoidal cavity with same dimensions is directly proportional to relative dielectric permittivity of insulation materials around cavities.

关键词： 乙丙橡胶 绝缘性能 局部放电 机理分析

作者: Zhipeng Lei Jiancheng Song Xiaohui Cui Muqin Tian Chuanyang Li

作者单位: Shanxi Key Laboratory of Coal Mining Equipment and Safety Control College of Electrical and Power Engineering, Taiyuan University of Technology, Taiyuan, 030024, China

会议类型: 国内会议

会议名称: 第十四届全国工程电介质学术会议

会议地点: 西安

会议语种:中文

页码: 117-118

在线出版日期: 2013-10-17（万方平台首次上网日期，不代表论文的发表时间）