160kV直流XLPE电缆绝缘的直流E-t特性
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摘要
目前关于XLPE电缆绝缘在直流电压下的击穿特性以及电压耐受指数的研究十分欠缺,在世界范围内依然缺少科学且有效的直流电缆绝缘的试验考核手段。为研究高压直流XLPE电缆绝缘在直流电压下的击穿特性和电压耐受特性,建立了一套高压直流试验系统,对高压直流电缆XLPE中层绝缘试样进行了击穿场强与击穿时间的关系试验,即E-t特性试验。基于反幂定律,采用两种方法对试验数据进行分析,得到直流电缆绝缘在70℃下的电压耐受指数以及其寿命分别为30年和40年时的耐受电场强度。
The research on the breakdown characteristics and electrical aging index of XLPE cable insulation under DC voltage is limited, so there lacks scientific and effective test method for DC XLPE cable insulation so far in the world. In order to study the insulation breakdown characteristics and aging characteristics of HVDC XLPE cables under DC voltage, we establish a high voltage DC test system. And then the relationship between breakdown strength and breakdown time of the HVDC XLPE cable slices of middle insulation is tested, which is called E-t characteristic test. Based on the inverse power law, two methods are used to analyze the experimental data, and the electrical aging lifetime index of DC cable insulation at 70 ℃ and the electric field when the electrical aging lifetime is 30 or 40 years are obtained.
The research on the breakdown characteristics and electrical aging index of XLPE cable insulation under DC voltage is limited, so there lacks scientific and effective test method for DC XLPE cable insulation so far in the world. In order to study the insulation breakdown characteristics and aging characteristics of HVDC XLPE cables under DC voltage, we establish a high voltage DC test system. And then the relationship between breakdown strength and breakdown time of the HVDC XLPE cable slices of middle insulation is tested, which is called E-t characteristic test. Based on the inverse power law, two methods are used to analyze the experimental data, and the electrical aging lifetime index of DC cable insulation at 70 ℃ and the electric field when the electrical aging lifetime is 30 or 40 years are obtained.
引文
[1]汤广福,贺之渊,庞辉.柔性直流输电工程技术研究、应用及发展[J].电力系统自动化,2013,37(15):3-14.TANG Guangfu,HE Zhiyuan,PANG Hui.Research,application and development of VSC-HVDC engineering technology[J].Automation of Electric Power Systems,2013,37(15):3-14.
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[4]KHALIL M S.International research and development trends and problems of HVDC cables with polymeric insulation[J].IEEE Electrical Insulation Magazine,2002,13(6):35-47.
[5]杜伯学,马宗乐,霍振星,等.电力电缆技术的发展与研究动向[J].高压电器,2010,46(7):100-104.DU Boxue,MA Zongle,HUO Zhenxing,et al.Recent research status of techniques for power cables[J].High Voltage Apparatus,2010,46(7):100-104.
[6]赵健康,赵鹏,陈铮铮,等.高压直流电缆绝缘材料研究进展评述[J].高电压技术,2017,43(11):3490-3503.ZHAO Jiankang,ZHAO Peng,CHEN Zhengzheng,et al.Review on progress of HVDC cables insulation materials[J].High Voltage Engineering,2017,43(11):3490-3503.
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[8]胡加励.高压XLPE绝缘电力电缆的电老化与寿命估计[J].哈尔滨电工学院学报,1987,10(2):188-193.HU Jiali.Electical aging and lifetime estimation of high voltage XLPEinsulated power cables[J].Journal of Harbin Institute of Electrical Technology,1987,10(2):188-193.
[9]钟力生,任海洋,曹亮,等.挤包绝缘高压直流电缆的发展[J].高电压技术,2017,43(11):3473-3489.ZHONG Lisheng,REN Haiyang,CAO Liang,et al.Development of high voltage direct current extruded cables[J].High Voltage Engineering,2017,43(11):3473-3489.
[10]HAMPTON R N.Some of the considerations for materials operating under high-voltage direct-current stresses[J].IEEE Electrical Insulation Magazine,2008,24(1):5-13.
[11]FOTHERGILL J C.The coming of age of HVDC extruded power cables[C]∥2014 IEEE Electrical Insulation Conference.Philadelphia,USA:IEEE,2014:124-137.
[12]ZHANG Y,LEWINER J,ALQUIE C,et al.Evidence of strong correlation between space-charge buildup and breakdown in cable Insulation[J].IEEE Transactions on Dielectrics and Electrical Insulation,1996,3(6):778-783.
[13]廖雁群,冯冰,罗潘,等.反幂定律应用于高压电缆寿命设计的研究进展[J].绝缘材料,2016,49(3):1-6.LIAO Yanqun,FENG Bing,LUO Pan,et al.Research progress of inverse power law applied in lifetime design of high voltage cable[J].Insulating Materials,2016,49(3):1-6.
[14]刘霞,于钦学,钟力生,等.高压XLPE电缆绝缘U-t特性研究综述[J].南方电网技术,2015,9(10):57-63.LIU Xia,YU Qinxue,ZHONG Lisheng,et al.Review on research of U-t characteristics of HV XLPE cables[J].Southern Power System Technology,2015,9(10):57-63.
[15]SAKAMOTO Y,FUKAGAWA H,NINOMIYA K,et al.Investigation on test method of DC XLPE cable[J].IEEE Transactions on Power Apparatus and Systems,1982,101(6):1352-1362.
[16]MURATA Y,ABE K,SUIZU M,et al.HVDC XLPE cable systems applicable for higher temperature and polarity reversal operation[C]∥The 8th International Conference on Insulated Power Cables.Paris,France:Jicable’11,2011:B4.1.
[17]WATANABE C,ITOU Y,SASAKI H,et al.Practical application of±250 kV DC XLPE cable for Hokkaido-Honshu HVDC link[J].Electrical Engineering in Japan,2015,191(3):18-31.
[18]Recommendations for testing DC extruded cable systems for power transmission at a rated voltage up to 500 kV:CIGRE TB496[S],2012.
[19]YOSHIFUJI N,NIWA T,TAKAHASHI T,et al.Development of the new polymer insulating materials for HVDC cable[J].IEEE Transactions on Power Delivery,1992,7(3):1053-1059.
[20]MONTANARI G C,GHINELLO J,PERUZZOTTI F,et al.Endurance characteristics of XLPE compounds under DC voltage[C]∥IEEE International Conference on Conduction and Breakdown in Solid Dielectrics.Vasteras,Sweden:IEEE,1998:439-442.
[21]LIU X,YU Q X,LIU M H,et al.DC electrical breakdown dependence on the radial position of specimens within HVDC XLPE cable insulation[J].IEEE Transactions on Dielectrics&Electrical Insulation,2017,24(3):1476-1484.
[2]赵庆波.国家电网促进清洁能源发展[J].电力技术经济,2009,21(5):1-4.ZHAO Qingbo.State grid contributes to the development of clean energy[J].Electric Power Technologic Economics,2009,21(5):1-4.
[3]BAHRMAN M P,JOHNSON B K.The ABCs of HVDC transmission technologies[J].IEEE Power Energy Magazine,2007,5(2):32-44.
[4]KHALIL M S.International research and development trends and problems of HVDC cables with polymeric insulation[J].IEEE Electrical Insulation Magazine,2002,13(6):35-47.
[5]杜伯学,马宗乐,霍振星,等.电力电缆技术的发展与研究动向[J].高压电器,2010,46(7):100-104.DU Boxue,MA Zongle,HUO Zhenxing,et al.Recent research status of techniques for power cables[J].High Voltage Apparatus,2010,46(7):100-104.
[6]赵健康,赵鹏,陈铮铮,等.高压直流电缆绝缘材料研究进展评述[J].高电压技术,2017,43(11):3490-3503.ZHAO Jiankang,ZHAO Peng,CHEN Zhengzheng,et al.Review on progress of HVDC cables insulation materials[J].High Voltage Engineering,2017,43(11):3490-3503.
[7]郑晓泉,CHEN G,DAVIES A E.交联聚乙烯电缆绝缘中的电树枝与绝缘结构亚微观缺陷[J].电工技术学报,2006,21(11):28-33.ZHENG Xiaoquan,CHEN G,DAVIES A E.Electrical tree and submicroscopic insulation structure w eakness in XLPE cable insulation[J].Transactions of China Electrotechnical Society,2006,21(11):28-33.
[8]胡加励.高压XLPE绝缘电力电缆的电老化与寿命估计[J].哈尔滨电工学院学报,1987,10(2):188-193.HU Jiali.Electical aging and lifetime estimation of high voltage XLPEinsulated power cables[J].Journal of Harbin Institute of Electrical Technology,1987,10(2):188-193.
[9]钟力生,任海洋,曹亮,等.挤包绝缘高压直流电缆的发展[J].高电压技术,2017,43(11):3473-3489.ZHONG Lisheng,REN Haiyang,CAO Liang,et al.Development of high voltage direct current extruded cables[J].High Voltage Engineering,2017,43(11):3473-3489.
[10]HAMPTON R N.Some of the considerations for materials operating under high-voltage direct-current stresses[J].IEEE Electrical Insulation Magazine,2008,24(1):5-13.
[11]FOTHERGILL J C.The coming of age of HVDC extruded power cables[C]∥2014 IEEE Electrical Insulation Conference.Philadelphia,USA:IEEE,2014:124-137.
[12]ZHANG Y,LEWINER J,ALQUIE C,et al.Evidence of strong correlation between space-charge buildup and breakdown in cable Insulation[J].IEEE Transactions on Dielectrics and Electrical Insulation,1996,3(6):778-783.
[13]廖雁群,冯冰,罗潘,等.反幂定律应用于高压电缆寿命设计的研究进展[J].绝缘材料,2016,49(3):1-6.LIAO Yanqun,FENG Bing,LUO Pan,et al.Research progress of inverse power law applied in lifetime design of high voltage cable[J].Insulating Materials,2016,49(3):1-6.
[14]刘霞,于钦学,钟力生,等.高压XLPE电缆绝缘U-t特性研究综述[J].南方电网技术,2015,9(10):57-63.LIU Xia,YU Qinxue,ZHONG Lisheng,et al.Review on research of U-t characteristics of HV XLPE cables[J].Southern Power System Technology,2015,9(10):57-63.
[15]SAKAMOTO Y,FUKAGAWA H,NINOMIYA K,et al.Investigation on test method of DC XLPE cable[J].IEEE Transactions on Power Apparatus and Systems,1982,101(6):1352-1362.
[16]MURATA Y,ABE K,SUIZU M,et al.HVDC XLPE cable systems applicable for higher temperature and polarity reversal operation[C]∥The 8th International Conference on Insulated Power Cables.Paris,France:Jicable’11,2011:B4.1.
[17]WATANABE C,ITOU Y,SASAKI H,et al.Practical application of±250 kV DC XLPE cable for Hokkaido-Honshu HVDC link[J].Electrical Engineering in Japan,2015,191(3):18-31.
[18]Recommendations for testing DC extruded cable systems for power transmission at a rated voltage up to 500 kV:CIGRE TB496[S],2012.
[19]YOSHIFUJI N,NIWA T,TAKAHASHI T,et al.Development of the new polymer insulating materials for HVDC cable[J].IEEE Transactions on Power Delivery,1992,7(3):1053-1059.
[20]MONTANARI G C,GHINELLO J,PERUZZOTTI F,et al.Endurance characteristics of XLPE compounds under DC voltage[C]∥IEEE International Conference on Conduction and Breakdown in Solid Dielectrics.Vasteras,Sweden:IEEE,1998:439-442.
[21]LIU X,YU Q X,LIU M H,et al.DC electrical breakdown dependence on the radial position of specimens within HVDC XLPE cable insulation[J].IEEE Transactions on Dielectrics&Electrical Insulation,2017,24(3):1476-1484.