等温松弛电流法在XLPE电缆老化状态评估中的应用 

林敏1，张子阳1，李淑琦2，吴建东2，尹毅2 
(1 江苏省电力公司，江苏 南京 210024；
2 上海交通大学 电气工程系，上海 200240) 
 

摘 要： 设计了一种新型的等温松弛电流测试系统，测试电路中考虑到微电流测试的抗干扰问题，基于该套系统分别研究了未老化、人工加速老化和实际运行的XLPE 绝缘电缆的等温松弛电流，研究表明采用等温松弛电流法不仅能够有效评估实验室电缆的老化程度，同时能够有效评估现场运行电缆。
关键词： 等温松弛电流法；绝缘电缆；极化；退极化；电缆老化
中图分类号：TM247+.1 文献标识码：A 文章编号：1007-3175(2014)09-0046-04

Application of Constant Temperature Relaxation Current Method in XLPE Insulated Power Cable Ageing State Evaluation 

LIN Min1, ZHANG Zi-yang1, LI Shu-qi2, WU Jian-dong2, YIN Yi2 
（1 Jiangsu Electric Power Company, Nanjing 210024, China;
2 Department of Electrical Engineering, Shanghai Jiaotong University, Shanghai 200240, China） 
 

Abstract: This paper designed a new type of constant temperature relaxation current test system, which considered the anti-interference problem of micro-current test in the testing circuit. On the basis of this system, this paper studied the non-ageing, manual speedup ageing and constant temperature relaxation current of actually running cross linked polyethylene (XLPE) insulated power cable. Research shows that adopting the constant temperature relaxation current method could not only evaluate the ageing degree of cable in lab effectively, but also evaluate the site running cable.
        Key words: constant temperature relaxation current method; insulated power cable; polarization; depolarization; cable ageing

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