介绍了10 kV XLPE电缆电热老化试验的设计工作，包括试样的选择和处理，老化平台的搭建，老化条件和老化周期的确定。为了避免电缆两侧在高压下闪络，在外半导电层切口处安装应力锥。将干燥鼓风箱改造成电热老化箱，通过自行设计的高压套管将电压引入老化箱。结合XLPE结晶特性和国标的规定，选择90℃、103℃、114℃和135℃4个温度作为电缆老化的试验温度，3倍和4倍额定相电压作为老化电压。初步确定不同老化条件下的老化周期和取样阶段，在老化过程中根据实验结果对老化周期进行修正。
The design of electrical-thermal ageing test for 10 kV XLPE cable was introduced in the paper, which included the choice and treatment of samples, the construction of ageing platform, and the determination of ageing condition and ageing period. In order to prevent the flashover in the both sides of the cable under high voltage, the stress cone was installed in the incision site of outer semi-conductor layer. The air dry oven was transformed to electrical-thermal ageing oven, and the voltage was intro-duced into the ageing oven through self-designed high voltage bushing. According to the crystalline char-acteristics of XLPE and the stipulations of national standard, 90 ℃, 103 ℃, 114 ℃, and 135 ℃ were selected as the ageing temperatures, 3U0 and 4U0 were selected as the ageing voltages. The ageing period and sampling stages were confirmed preliminarily under different ageing conditions, and the ageing period would be revised according to the experimental results in the ageing process.
参考文献
| [1] | E. S. Cooper;L. A. Dissado;J. C. Fothergill.Application of Thermoelectric Aging Models to Polymeric Insulation in Cable Geometry[J].IEEE transactions on dielectrics and electrical insulation: A publication of the IEEE Dielectrics and Electrical Insulation Society,20051(1):1-10. |
| [2] | 蒋雄伟;贾志东;谢恒.绝缘材料老化寿命模型的研究进展[J].高电压技术,2000(3):44-46. |
| [3] | 张潮;刘桂云.绝缘材料电老化加速方法的探讨[J].老化与应用,1986(01):18. |
| [4] | 金天雄;刘飞;江平开;金石南;李哲凡.热老化XLPE电缆绝缘的介电击穿行为的研究[J].电线电缆,2008(6):28-31,39. |
| [5] | Motori A.;Sandrolini F..A contribution to the study of aging of XLPE insulated cables[J].IEEE Transactions on Power Delivery,19911(1):34-42. |
| [6] | Montanari G.C.;Simoni L..Aging phenomenology and modeling[J].IEEE transactions on electrical insulation. (Institute of Electrical and Electronics Engineers. Electrical Insulation Group). New York.,19935(5):755-776. |
| [7] | 陈广辉;王安妮;何东欣;杨凯;陈胜科;王伟;孙辉.交联聚乙烯绝缘空间电荷研究进展[J].绝缘材料,2012(4):27-30. |
| [8] | 朱晓辉 .交联工艺对交联聚乙烯绝缘特性的影响[D].天津大学,2010. |
| [9] | 朱晓辉;杜伯学.交联工艺对XLPE击穿特性的影响研究[J].绝缘材料,2011(3):53-56. |
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