基于国产基料的交联聚乙烯高压直流电缆绝缘材料电性能研究
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摘要
交联聚乙烯(crosslinked polyethylene,XLPE)高压直流电缆是直流电网的核心设备,将XLPE高压直流电缆绝缘料国产化具有重要意义。基于欧洲主流超净低密度聚乙烯(low density polyethylene,LDPE)与国内知名企业生产的2种超净聚乙烯,分别制备XLPE试样,并完成脱气处理。测量与评估3种XLPE试样的直流击穿电场强度、直流电导率、空间电荷特性等电气性能指标,综合评估交联材料电气性能。其中,一种国产交联聚乙烯材料的击穿场强与电导率性能指标接近于参考绝缘材料性能指标,其空间电荷性能指标优于参考绝缘材料性能指标,确定了XLPE高压直流电缆绝缘料国产化的可行性。
High voltage direct current(HVDC) XLPE cable is a key part of the HVDC transmission system. So developing HVDC XLPE cable using Chinese base material is very important. Based on one type of ultra-clean low density polyethylene(LDPE) from Europe and two types of Chinese ultra-clean LDPE, three kinds of XLPE samples were prepared and degassed. DC breakdown strength, DC conductivity and space charge behavior of three types of XLPE material have been tested and evaluated. It has been found that the electrical performances of one Chinese XLPE material is close to or even superior to those of reference XLPE material, which means that Chinese base material is available for HVDC XLPE cable from the point of the electrical performance.
High voltage direct current(HVDC) XLPE cable is a key part of the HVDC transmission system. So developing HVDC XLPE cable using Chinese base material is very important. Based on one type of ultra-clean low density polyethylene(LDPE) from Europe and two types of Chinese ultra-clean LDPE, three kinds of XLPE samples were prepared and degassed. DC breakdown strength, DC conductivity and space charge behavior of three types of XLPE material have been tested and evaluated. It has been found that the electrical performances of one Chinese XLPE material is close to or even superior to those of reference XLPE material, which means that Chinese base material is available for HVDC XLPE cable from the point of the electrical performance.
引文
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[22]Guo T C,Guo W W.A transient-state theory of dielectric relaxation and the Curie-Von Schweidler law[J].Journal of Physics C:Solid State Physics,1983,16:1955-1960.
[23]赵维佳,张翀,李文鹏,等.脱气对交联聚乙烯电缆绝缘电气性能的影响[C]//超/特高压直流输电技术会议,2018:340-344.
[24]Sarathi R,Supriyo Das,Anil Kumar C R,et al.Analysis of failure of crosslinked polyethylene cables because of electrical treeing:A physicochemical approach[J].Journal of Applied Polymer Science,2004,92(4):2063-2745.
[25]Zhang Kai,Li Lunzhi,Zhong Lisheng,et al.The mechanical properties of recyclable cable insulation materials based on thermo-plastic polyolefin blends[C]//Properties and Applications of Dielectric Materials(ICPADM),Sydney,NSW,Australia,2015:532-535
[26]Xu Yang,Luo Pan,Xu Man,et al.Investigation on insulation material morphological structure of 110 and220kV XLPE retired cables for reusing[J].IEEETransactions on Dielectrics and Electrical Insulation,2014,21(4):1687-1696.
[2]Saeedifard M,Iravani R.Dynamic performance of a modular multilevel back-to-back HVDC system[J].IEEETrans.on Power Delivery,2010,25(4):2903-2912.
[3]Purvins A,Wilkening H,Fulli G,et al.A European supergrid for renewable energy:local impacts and far-reaching challenges[J].Journal of Cleaner Production,2011,19(17):1909-1916.
[4]黄兴溢,张军,江平开.热塑性电力电缆绝缘材料:历史与发展[J].高电压技术,2018,44(5):1377-1398.Huang Xingyi,Zhang Jun,Jiang Pingkai.Thermoplastic insulation materials for power cables:history and progress[J].High Voltage Engineering,2018,44(5):1377-1398(in Chinese).
[5]尹毅,肖登明,屠德民.空间电荷在评估绝缘聚合物电老化程度中的应用研究[J].中国电机工程学报,2002,22(1):43-48.Yin Yi,Xiao Dengming,Tu Demin.An application of space charge in valuing the electric ageing degree of insulating polymer[J].Proceedings of the CSEE,2002,22(1):43-48(in Chinese).
[6]Chong Y L,Chen G,Hosier I L,et al.Heat treatment of cross-linked polyethylene and its effect on morphology and space charge evolution[J].IEEE Transactions on Dielectrics and Electrical Insulation,2005,12(6):1209-1221.
[7]Silva A L N,Tavares M I B,Politano D P,et al.Polymer blends based on polyolefin elastomer and polypropylene[J].Journal of Applied Polymer Science,1997,66(10):2005-2014.
[8]Hosier I L,Reaud S,Vaughan A S,et al.Morphology,thermal,mechanical and electrical properties of propylene-based materials for cable applications[C]//IEEEInternational Symposium on Electrical Insulation.Toronto:IEEE,2008:502-505.
[9]Zhou Yao,He Jinliang,Hu Jun,et al.Evaluation of polypropylene/polyolefin elastomer blends for potential recyclable HVDC cable insulation applications[J].IEEETransactions on Dielectrics and Electrical Insulation,2015,22(2):673-681.
[10]Tanaka T,Bulinski A,Castellon J,et al.Dielectric properties of XLPE/SiO2 Nanocomposites based on CIGRE WG D1.24 cooperative test results[J].IEEETransactions on Dielectrics and Electrical Insulation,2011,18(5):1484-1517.
[11]Chen Xi,Wang Xia,Wu Kai,et al.Effect of voltage reversal on space charge and transient field in LDPE films under temperature gradient[J].IEEE Transactions on Dielectrics and Electrical Insulation,2012,19(1):140-149.
[12]吴建东,尹毅,兰莉,等.纳米填充浓度对LDPE/Silica纳米复合介质中空间电荷行为的影响[J].中国电机工程学报,2012,32(28):177-183.Wu Jiandong,Yin Yi,Lan Li,et al.The influence of nano-filler concentration on space charge behavior in LDPE/Silica nanocomposites[J].Proceedings of the CSEE,2012,32(28):177-183(in Chinese).
[13]陈铮铮,赵健康,欧阳本红,等.直流电缆料工作温度和击穿特性的纳米改性研究[J].高电压技术,2015,40(4):1214-1227.Chen Zhengzheng,Zhao Jiankang,Ouyang Benhong,et al.Study on the nanoparticle-modification of working temperature and breakdown characteristics for insulating materials in DC cables[J].High Voltage Engineering,2015,40(4):1214-1227(in Chinese).
[14]Gustafsson A,Jeroense M,Ghorbani H,et al.Qualification of an extruded HVDC cable system at525kV[C]//JICABLE 15,Versailles,France,2015:1-7.
[15]https://www.prysmiangroup.com/sites/default/files/corpor ate/media/downloads/pdf/press-releases/PR_Prysmian_29092016_PLaser600kV_ENG.pdf.
[16]http://www.nkt.com/fileadmin/user_upload/01_Page_ima ges_global/general_images_pages/About_us/Innovation/640_kV_extruded_HVDC.pdf.
[17]https://www.borealisgroup.com/news/borlink-extruded-hi gh-voltage-direct-current-technology-sets-new-record-at-640-kilovolt.
[18]Yamanaka T,Maruyama S,Tanaka T.The development of DC±500kV XLPE cable in consideration of the space charge accumulation[C]//Proceedings of the 7th International Conference on Properties and Applications of Dielectric Materials,Nagoya,Japan,2003:689-694.
[19]蔡建超,刘美兵,何军,等.国产110kV XLPE电缆料的研发和性能[J].电线电缆,2012(6):28-31.Cai Jianchao,Liu Meibing,He Jun,et al.Development and properties of home-made 110k V XLPE cable material[J].Electric Wire&Cable,2012(6):28-31(in Chinese).
[20]李维康,张翀,闫轰达,等.高压直流电缆用交联聚乙烯绝缘材料交联特性及机理[J].高电压技术,2017,43(11):3599-3606.Li Weikang,Zhang Chong,Yan Hongda,et al.Crosslinking characteristic and mechanism of cross-linked polyethylene insulating materials used for high voltage direct current cables[J].High Voltage Engineering,2017,43(11):3599-3606(in Chinese).
[21]王海田,曹均正,张升,等.320kV交联聚乙烯直流电缆用国产基料选型研究[J].中国电机工程学报,2016,36(20):5696-5703.Wang Haitian,Cao Junzheng,Zhang Sheng,et al.Research on China-made base resin for 320kV HVDCXLPE cable[J].Proceedings of the CSEE,2016,36(20):5696-5703(in Chinese).
[22]Guo T C,Guo W W.A transient-state theory of dielectric relaxation and the Curie-Von Schweidler law[J].Journal of Physics C:Solid State Physics,1983,16:1955-1960.
[23]赵维佳,张翀,李文鹏,等.脱气对交联聚乙烯电缆绝缘电气性能的影响[C]//超/特高压直流输电技术会议,2018:340-344.
[24]Sarathi R,Supriyo Das,Anil Kumar C R,et al.Analysis of failure of crosslinked polyethylene cables because of electrical treeing:A physicochemical approach[J].Journal of Applied Polymer Science,2004,92(4):2063-2745.
[25]Zhang Kai,Li Lunzhi,Zhong Lisheng,et al.The mechanical properties of recyclable cable insulation materials based on thermo-plastic polyolefin blends[C]//Properties and Applications of Dielectric Materials(ICPADM),Sydney,NSW,Australia,2015:532-535
[26]Xu Yang,Luo Pan,Xu Man,et al.Investigation on insulation material morphological structure of 110 and220kV XLPE retired cables for reusing[J].IEEETransactions on Dielectrics and Electrical Insulation,2014,21(4):1687-1696.