复合材料杆塔及样品的多因子老化性能  

Multi-factor Aging Performance of Composite Material Tower and Samples

作　　者：王力农[1] 方雅琪 马亚运 邵建伟[1] 王军华[1] 吴雄[3] 

机构地区：[1]武汉大学电气工程学院,武汉430072 [2]国网冀北电力有限公司唐山供电公司,唐山063000 [3]国网电力科学研究院武汉南瑞有限责任公司,武汉430074

出　　处：《高电压技术》2016年第12期3881-3887,共7页High Voltage Engineering

摘　　要：复合材料杆塔以其优良的性能及发展前景受到国内外电力部门的密切关注,其长期运行的老化性能成为紧迫的研究内容。为此参考IEC 62217:2005/FDIS推荐的5 000 h多因子老化试验方法,首次进行10 k V复合材料杆塔及电力用复合材料样品的5 000 h多因子老化试验。建立10 k V复合材料杆塔制品的三维模型,采用有限元法对多因子老化室内杆塔各个部件的电位和电场分布进行了仿真,仿真结果与杆塔不同部位在试验结束后表现出的老化性能存在相关性。对进行老化试验后的电力用复合材料样品的弯曲模量和弯曲强度进行测试,测试结果表明大部分样品弯曲模量保留率都在90%以上,耐老化性能良好。综合考虑弯曲模量、弯曲模量保留率和弯曲强度,最终确定复合材料杆塔生产使用改性聚氨酯PU/1:1方格布材料和拉挤工艺。The domestic and foreign power sectors pay close attention to composite material tower for its excellent per- formance and development prospect, thus the long-term running aging performance of composite tower becomes urgent issues to be studied. There is not a general world-wide multi-factor aging standard for composite material tower at present. Consequently, we first ]proposed a 5 000 h multi-factor aging test mimicing the natural aging factors of composite material tower and samples for electric power, referring to the IEC 62217：2005/FDIS 5 000 h multi-factor aging test and according to the tests carried out for composite insulators. Then, we established a three-dimensional geometric model of 10 kV composite material tower＇s head part, and simulated the electric field and potential distribution of the composite tower placed inside the multi-factor aging test chamber by using finite element method. The simulation results and the aging performance show that different parts of the test composite tower at the end of the test may be related. Simulation analysis therefore can provide a reference for the design of composite tower. After the aging test, the bending modulus and bend- ing strength of the composite material samples for electric power are measured and all samples hold very high retention value maintaining at more than 90% of the original except for isophthalic unsaturated polyester （UP）/I：I ones which dis- plays the samples＇ very good aging resistant performance. After the bending modulus, bending strength, and bending modulus retention rate being considered, modified polyurethane（PU）/1：1 roving material and pultrusion process are final- ly determined to producted 10 kV composite material tower.

关 键 词：复合材料 多因子老化 有限元分析 弯曲模量 拉挤工艺 

分 类 号：TM75[电气工程—电力系统及自动化]