采用拉挤成型工艺制备了碳纤维增强环氧树脂复合材料导线芯,在外部绞合铝绞线制备成导线.并对线芯的密度和拉伸强度以及导线的应力应变曲线和弧垂等性能做了研究.结果表明,碳纤维复合芯的密度仅为1.60g/mm~3,断裂强度高达2874MPa,大大超过普通钢芯;由于在拉伸过程中复合芯只表现出弹性变化,而铝绞线要发生弹塑性变形,使导线的应力应变曲线上存在斜率的突然变化;线芯的热膨胀系数比铝绞线要小的多,使在温度升高到一定值时导线的弧垂基本不再增加,从而允许导线在更高的温度下使用.现场应用情况表明,新型导线完全可以取代传统钢芯导线,改造输电线路.
A carbon fiber reinforced epoxy resin composite core was made by pultrusion,and the conductor was made by twisting aluminum wire outside. The core's density and mechnics, as well as the conductor's stress-strain responseand sag,were studied. The density of the composite core is only 1.60g/mm~3, and its tensile strength is up to 2874MPa, which is much higher than stranded steel core. There is sudden change of slope in the stress-strain curve, because the core response in loading and unloading is entirely elastic, while the aluminum undergoes elastic-plastic deformation. The composte core has a much lower coefficient of thermal expansion than aluminum, which cause that the sag of the conductor hardly change when temprature increases to cerntain contant. Thus, the new conductor can be used at higher temperature. It was shown from field application that the traditional steel wire can be definitely replaced by the new one to trandform the transmission line.
参考文献
| [1] | 黄国飞,季世泽,蒋华君.碳纤维芯软铝绞线的特性研究与应用[J].电线电缆,2007(04):10-14. |
| [2] | 胡毅,刘庭.输电线路建设和运行中的制约与技术创新[J].高电压技术,2008(11):2262-2269. |
| [3] | 中国电机工程学会 .新型材料的输电技术[EB/OL].http://www.csee.net.cn,2006-11-11. |
| [4] | 朱岸明,于国夫,毛琛琳.碳纤维芯耐热导线及其在750 kV线路应用分析[J].电网与水力发电进展,2008(05):10-14. |
| [5] | Thrash F R.[J].IEEE Transmission Distribution Conf,1999(02):182-185. |
| [6] | James Carswell .Composite Technology Announces 30 Kilometer Sale of ACCC Cable in China and Begins Testing[EB/OL].http://www.compositetechcorp.com,2005-12-1. |
| [7] | 尤传永.架空输电线路新型重合材料合成导线的开发研究[J].电力建设,2004(11):1-6. |
| [8] | 甘兴忠.碳纤维复合芯软铝绞线等扩容量导线的性能及应用[J].电线电缆,2007(05):37-41. |
| [9] | 梁旭明,余军,尤传永.新型复合材料合成芯导线技术综述[J].电网技术,2006(19):1-6. |
| [10] | 朱爱钧,尤志巍,张锦秀.碳纤维复合导线在上海电网应用前景初探[J].华东电力,2007(10):93-95. |
| [11] | 3M.Aluminum Conductor Composite Reinforced Technical Notebook(795 Kcmil Family)[M].USA:Conductor and Accessory Testing,2002 |
| [12] | 杨宁.ACCC碳纤维复合芯导线技术在我国的应用前景分析[J].电气应用,2008(05):50-52. |
| [13] | 李哲曌,曾竟成,邢素丽,杜刚.碳/玻璃混杂纤维增强环氧树脂复合材料线芯的性能[J].机械工程材料,2007(10):29-31. |
| [14] | 黄家康;岳红军;董永祺.复合材料成型技术[M].北京:化学工业出版社,1999:430-432. |
| [15] | Alawar A;Bosze E J;Steven R .[J].IEEE Transactions on Power Delivery,2005,20(03):2193-2196. |
| [16] | Thrash R;Hudson G;Cooper D.Overhead Conductor Manual 1st[M].Georgia:Southwire Company,1994 |
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