Influence of aging mode on space charge distribution of AC XLPE cables

被引：4
作者：
机构：
[1] China Electric Power Research Institute
[2] State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University
来源：
Ouyang, B. (ouyangbenhong@epri.sgcc.com.cn) | 1600年 / Science Press卷 / 38期
关键词：
AC cable; Aging; Cross-linked polyethylene; Insulating material; Pulsed electro-acoustic (PEA) method; Space charge distribution;
D O I：
10.3969/j.issn.1003-6520.2012.08.043
中图分类号：
学科分类号：
摘要：
In order to investigate the relationship between the aging state of HV AC XLPE cable and the characteristic of space charge of XLPE, we studied the space charge distribution of HVAC XLPE cables under different aging modes. Moreover, we adopted pulsed electro-acoustic (PEA) method to measure the evolution of space charge inside the insulating materials that were got from different position of AC cables. It is found that the total charge amount of insulating materials from un-aged cables and cables under actual operation increases along the radial direction from inner to outer, while the total charge amount of insulating materials from accelerated aging cables decreases. Space charge of accelerated aging cables starts from the inside of the insulating materials, while it starts from the outside of cables aged under normal operation. It is suggested that the space charge characteristics of AC XLPE cable insulation varies with its aging state obviously, thus the space charge measurement can be used as an effective method for aging state assessment of AC XLPE cable.
引用
收藏
页码：2123 / 2128
页数：5
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