Space Charge Formation and Physicochemical Properties of Aged XLPE Cable Insulation

被引：0

作者：

Li, Shengtao ^{[1
]}

Li, Weiwei ^{[1
]}

Li, Jianying ^{[1
]}

Wang, Xia ^{[1
]}

Li, Huan ^{[1
]}

Jing, Yu ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Xian 710049, Shaanxi, Peoples R China

来源：

PROCEEDINGS OF 2012 IEEE INTERNATIONAL CONFERENCE ON CONDITION MONITORING AND DIAGNOSIS (IEEE CMD 2012) | 2012年

关键词：

Aging; cross-linked polyethylene; space charge; physicochemical properties;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The influence of different aging modes on the space charge accumulation properties and physicochemical properties of insulating materials in cross-linked polyethylene (XLPE) cables was investigated. The XLPE samples were obtained from unaged cables, 1-year laboratory accelerated aged cables and 30-year practical cables. Pulsed electro-acoustic (PEA) technique was used to measure the distribution of space charge in the insulating materials. Fourier-Transform Infrared (FTIR) and Thermo-gravimetric analysis were used to reveal details of their physicochemical properties. It was found that homo-charges accumulated at the Al electrode for the unaged cables, while the hetero-charges for aged cables. It was also found that the charge accumulation rate of unaged cables is highest, that of 30-years practical cable is second, and for the accelerated aging cables for 1 year, the rate of charge accumulation is lowest. It was also found that a new absorption peak appeared in the aged XLPE cables comparing with unaged cables. The hetero-charges appear to be intimately related to the ionization of aging products, injection and transportation of charges.

引用

页码：408 / 411

页数：4

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