基于激光诱导击穿光谱的装置参数优化与硅橡胶材料的主组分分析
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摘要
硅橡胶材料被广泛应用于输电线路外绝缘领域,但长期运行后会逐渐发生老化现象,目前缺乏可应用于现场的、有效的老化表征手段。基于激光诱导击穿光谱技术(LIBS)可以快速获取硅橡胶样品的元素组成,并结合热重分析方法有效地测量硅橡胶的主组分,相比于常规的元素测量手段,该方法具有良好的现场应用前景。由于光谱的质量对基于LIBS的硅橡胶老化分析影响较大,需优化LIBS参数获取高质量的光谱以进行材料组分分析。以新制高温硫化硅橡胶(HTV)为样品,对单脉冲激光能量、激光聚焦位置、光谱仪采集光谱的延迟时间对光谱质量的影响进行讨论,获得了新制HTV样品的烧蚀阈值与适用于硅橡胶材料组分分析的优化LIBS参数,最后利用热重分析仪测量了样品的主组分,发现与LIBS的测量结果有很好的对应关系。
Silicone rubber has been widely used in external insulation. But aging appears under the effect of high temperature, high humidity, and high electric field, causing the decrease of silicone rubber performance and threatening transmission line safety, while no analysis methods can be applied on site. Laser-induced breakdown spectroscopy(LIBS) can acquire the element composition of material with different depth in the silicone rubber, and characterize the silicone rubber aging through the change of the element composition with depth, with good field application prospect. However, spectral quality will influence the analysis of the silicone rubber aging based on the LIBS, it is necessary to optimize the LIBS parameters, improving the analysis precision. With HTV as a sample,the paper studies the effect of laser energy, laser focus position and spectral acquisition delay time on the spectral quality, and acquires optimized parameters. Eventually the principal ingredient of HTV material is analyzed by thermogravimetric analysis(TGA) and the LIBS, and the results show a good correspondence.
Silicone rubber has been widely used in external insulation. But aging appears under the effect of high temperature, high humidity, and high electric field, causing the decrease of silicone rubber performance and threatening transmission line safety, while no analysis methods can be applied on site. Laser-induced breakdown spectroscopy(LIBS) can acquire the element composition of material with different depth in the silicone rubber, and characterize the silicone rubber aging through the change of the element composition with depth, with good field application prospect. However, spectral quality will influence the analysis of the silicone rubber aging based on the LIBS, it is necessary to optimize the LIBS parameters, improving the analysis precision. With HTV as a sample,the paper studies the effect of laser energy, laser focus position and spectral acquisition delay time on the spectral quality, and acquires optimized parameters. Eventually the principal ingredient of HTV material is analyzed by thermogravimetric analysis(TGA) and the LIBS, and the results show a good correspondence.
引文
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[16]王希林,王晗,赵晨龙,等.基于激光诱导击穿光谱的室温硫化硅橡胶材料成分研究[J].电工技术学报,2016, 31(24):96-104.WANG Xilin, WANG Han, ZHAO Chenlong, et al.Composition analysis of room temperature vulcanized material with laser-induced breakdown spectroscopy technique[J]. Transactions of China Electrotechnical Society, 2016, 31(24):96-104.
[17] WANG X, WANG H, CHEN C, et al. Ablation properties and elemental analysis of silicone rubber using laserinduced breakdown spectroscopy[J]. IEEE Transactions on Plasma Science, 2016, 44(11):2766-2771.
[18] WANG X L, WANG H, JIA Z D, et al. A new method to measure RTV coatings thickness with laser-induced breakdown spectroscopy(LIBS)technique[C]. Montreal:IEEE Electrical Insulation Conference, 2016:81-84.
[19]王呈祥.短脉冲激光对阻尼橡胶材料的损伤特性研究[D].武汉:湖北工业大学,2016.
[20]陈列,王呈祥,汪幸,等.纳秒激光单脉冲对阻尼橡胶材料的损伤特性[J].激光与光电子学进展,2016,53(8):169-177.CHEN Lie, WANG Chenxiang, WANG Xing, et al.Damage properties of single pulse of nanosecond laser on damping rubber material[J]. Laser&Optoelectronics Progress, 2016, 53(8):167-177.
[2]王博,田禄,闫振华,等.RTV涂料复涂技术关键问题研究[J].陕西电力,2015,43(8):17-21.WANG Bo, TIAN Lu, YAN Zhenhua, et al. Study on several key problems in RTV re-coating technology[J].Smart Power, 2015, 43(8):17-21.
[3]张冠军,赵林,周润东,等.硅橡胶复合绝缘子老化表征评估研究的现状与进展[J].高压电器,2016,59(4):1-15.ZHANG Guanjun, ZHAO Lin, ZHOU Ruidong, et al.Review on aging characterization and evaluation of silicon rubber composite insulator[J]. High Voltage Apparatus,2016,59(4):1-15.
[4]汪佛池,黄成才,李永刚,等.硅橡胶复合绝缘子老化状态评估新判据[J].电网技术,2014, 38(11):3224-3229.WANG Fochi, HUANG Chengcai, LI Yonggang, et al. A new criterion to assess aging status of silicon rubber composite insulator[J]. Power System Technology, 2014,38(11):3224-3229.
[5]赵庆州,李昂,成立,等.太赫兹电磁波检测复合绝缘子内部缺陷可行性研究[J].陕西电力,2015,43(3):63-66,97.ZHAO Qingzhou, LI Ang, CHENG Li, et al. Feasibility study on THz detection of composite insulator internal defects[J]. Shaanxi Electric Power,2015,43(3):63-66,97.
[6]方茂欢.防污闪涂料受水影响特性及失效原因研究[D].北京:清华大学,2016.
[7]王天,卢明,景冬冬,等.RTV防污闪涂层老化分析方法[J].绝缘材料,2014,49(1):26-30.WANG Tian, LU Ming, JING Dongdong, et al. Aging analysis methods review of RTV insulator coating with anti-pollution flashover[J]. Insulating Materials, 2014,49(1):26-30.
[8]沈庆河.运行设备涂RTV涂料有效期探讨[C].深圳:2007中国电机工程学会高电压专委会学术年会,2007.
[9]李国芳.紫外老化对高温硫化硅橡胶力学和电气性能影响的研究[D].昆明:昆明理工大学,2015.
[10]贾志东,陆海,胡亚荣,等.高湿气候下RTV防污闪涂料的运行特性分析[J].电网技术,2014, 38(8):2291-2297.JIA Zhidong, LU Hai, HU Yarong, et al. Analysis of operating performance of RTV coating used in areas with humid climate[J]. Power System Technology, 2014, 38(8):2291-2297.
[11]李成钢,朱孟周,刘建军,等.110kV GIS复合套管硅橡胶老化分析与研究[J].绝缘材料,2015,50(6):58-61.LI Chenggang, ZHU Mengzhou, LIU Jianjun, et al.Ageing analysis and research of silicone rubber composite bushing for 110 kV GIS[J]. Insulating Materials, 2015,50(6):58-61.
[12]陈晓春,李洛琦,吴照国,等.挂网运行复合绝缘子伞裙性能研究[J].广东电力,2016, 29(6):104-108.CHEN Xiaochun, LI Luoqi, WU Zhaoguo, et al. Research on shed properties of network operating composite insulators[J]. Guangdong Electric Power, 2016, 29(6):104-108.
[13]高海峰,贾志东,关志成.运行多年RTV涂料绝缘子表面涂层老化分析研究[J].中国电机工程学报,2005, 25(9):158-163.GAO Haifeng, JIA Zhidong, GUAN Zhicheng. Aging sudy on RTV coating covered on insulators and energized for many years[J]. Proceedings of the CSEE, 2005, 25(9):158-163.
[14]赵芳,张谦,熊威,等.水中痕量重金属激光诱导击穿光谱高灵敏检测[J].环境科学与技术,2010, 33(3):137-140.ZHAO Fang, ZHANG Qian, XIONG Wei, et al. High sensitive detection of trace heavy metals in water by laserinduced breakdown spectroscopy[J]. Environmental Science and Technology, 2010, 33(3):137-140.
[15]李捷.应用激光诱导击穿光谱进行煤质测量的机理研究[D].武汉:华中科技大学,2010.
[16]王希林,王晗,赵晨龙,等.基于激光诱导击穿光谱的室温硫化硅橡胶材料成分研究[J].电工技术学报,2016, 31(24):96-104.WANG Xilin, WANG Han, ZHAO Chenlong, et al.Composition analysis of room temperature vulcanized material with laser-induced breakdown spectroscopy technique[J]. Transactions of China Electrotechnical Society, 2016, 31(24):96-104.
[17] WANG X, WANG H, CHEN C, et al. Ablation properties and elemental analysis of silicone rubber using laserinduced breakdown spectroscopy[J]. IEEE Transactions on Plasma Science, 2016, 44(11):2766-2771.
[18] WANG X L, WANG H, JIA Z D, et al. A new method to measure RTV coatings thickness with laser-induced breakdown spectroscopy(LIBS)technique[C]. Montreal:IEEE Electrical Insulation Conference, 2016:81-84.
[19]王呈祥.短脉冲激光对阻尼橡胶材料的损伤特性研究[D].武汉:湖北工业大学,2016.
[20]陈列,王呈祥,汪幸,等.纳秒激光单脉冲对阻尼橡胶材料的损伤特性[J].激光与光电子学进展,2016,53(8):169-177.CHEN Lie, WANG Chenxiang, WANG Xing, et al.Damage properties of single pulse of nanosecond laser on damping rubber material[J]. Laser&Optoelectronics Progress, 2016, 53(8):167-177.