温度梯度场下高压直流电缆绝缘与附件绝缘XLPE/SR双层介质空间电荷特性研究
Study on Space Charge Characteristics between XLPE and SR for HVDC Cable Insulation and Accessory Insulation under Temperature Gradient Field
DOI: 10.12677/SG.2019.96029, PDF,    国家自然科学基金支持
作者: 齐佳乐, 周一帆, 王 伟, 郭泰龙：华北电力大学，高电压与电磁兼容北京市重点实验室，北京
关键词: 直流电缆；电缆附件；空间电荷；界面；温度梯度；M-W极化模型；DC Cable； Cable Accessory； Space Charge； Interface； Temperature Gradient； M-W Polarization Model
摘要: 直流电缆在运行过程中，直流电缆及附件组成的复合绝缘界面处易积聚空间电荷。电缆负载运行引起绝缘层形成内高外低的温度梯度，温度梯度的存在会影响双层介质空间电荷行为特性。为此，研究了电缆主绝缘交联聚乙烯(Cross-linked Polyethylene, XLPE)和附件应力锥绝缘硅橡胶(Silicone Rubber, SR)组成的双层介质平板试样在不同直流电场和不同温度梯度下的空间电荷特性，基于Maxwell-Wagner极化模型模拟了温度梯度下双层介质内部空间电荷和电场分布。结果表明：界面电荷极性与SR侧电极处的电荷极性相同，且随着温度梯度的增加，界面处积聚电荷增多，XLPE侧电荷增加，SR侧电荷减少，同时SR介质内部电场逐渐削弱，界面处电场畸变更加严重，双层介质内部电场强度最大值出现在XLPE下电极界面处；基于M-W极化模型可以有效表征温度梯度场下直流低电场作用的双层介质内部空间电荷特性。
Abstract: During the operation of the DC cable, the space charge is easily accumulated at the composite insulation interface composed of the DC cable and the accessory. The cable load operation causes the insulation layer to form a high temperature gradient inside and outside, and the existence of the temperature gradient affects the space charge behavior of double-layered insulation. Space charge characteristics in Double-layered Insulation of flat specimens between XLPE and SR are studied under different DC electric fields and different temperature gradients. Space charge and electric field distribution under temperature gradient in double-layered insulation were simulated based on Maxwell-Wagner polarization model. The results show that the polarity of the interface charge is the same as that of the SR side electrode, and as the temperature gradient increases, the accumulated charge increases at the interface, the charge on the XLPE side increases, the charge on the SR side decreases. At the same time, the internal electric field of the SR medium is gradually weakened, and the electric field distortion at the interface is more serious. The maximum electric field strength of the double-layered insulation appears at the lower electrode interface of the XLPE. Based on the M-W polarization model, the internal space charge characteristics of the double-layered insulation under DC field of the temperature gradient field can be effectively described.
文章引用：齐佳乐, 周一帆, 王伟, 郭泰龙. 温度梯度场下高压直流电缆绝缘与附件绝缘XLPE/SR双层介质空间电荷特性研究[J]. 智能电网, 2019, 9(6): 263-273. https://doi.org/10.12677/SG.2019.96029

参考文献

[1] 杜伯学, 李忠磊, 杨卓然, 等. 高压直流交联聚乙烯电缆应用与研究进展[J]. 高电压技术, 2017, 43(2): 14-24.
[2] 钟海杰, 王佩龙, 王锦明, 等. 用于抑制界面空间电荷的直流电缆附件设计[J]. 高电压技术, 2015, 41(4): 126-132.
[3] Ieda, M. (1987) Carroer Injection, Space Charge and Electrical Breakdown in Insulating Polymers. IEEE Transactions on Electrical Insulation, EI-22, 261-267.
[Google Scholar] [CrossRef] 
[4] Zhang, Y., Lewiner, J., Alquie, C. and Hampton, N. (1996) Evidence of Strong Correlation between Space-Charge Buildup and Breakdown in Cable Insulation. IEEE Transactions on Dielectrics and Electrical Insulation, 3, 778-783.
[Google Scholar] [CrossRef] 
[5] Fabiani, D., Montanari, G.C., Laurent, C., et al. (2008) HVDC Cable Design and Space Charge Accumulation, Part 3: Effect of Temperature Gradient. IEEE Electrical Insulation Magazine, 24, 5-14.
[Google Scholar] [CrossRef] 
[6] Montanari, G.C. (2011) Bringing an Insulation to Failure: The Role of Space Charge. IEEE Transactions on Dielectrics & Electrical Insulation, 18, 339-364.
[Google Scholar] [CrossRef] 
[7] Hozumi, N., Takeda, T., Suzuki, H. and Okamoto, T. (1998) Space Charge Behavior in XLPE Cable Insulation under 0.2-1.2 MV/cm dc Fields. IEEE Transactions on Dielectrics and Electrical Insulation, 5, 82-90.
[Google Scholar] [CrossRef] 
[8] 吕亮, 方亮, 王霞, 等. 硅橡胶中空间电荷的形成机理[J]. 中国电机工程学报, 2003, 23(7): 139-144.
[9] See, A., Dissado, L.A. and Fothergill, J.C. (2001) Electric Field Criteria for Charge Packet Formation and Movement in XLPE. IEEE Transactions on Dielectrics and Electrical Insulation, 8, 859-866.
[Google Scholar] [CrossRef] 
[10] Chen, G., Tanaka, Y., Takada, T. and Zhong, L. (2004) Effect of Polyethyleneinterface on Space Charge Formation. IEEE Transactions on Dielectrics and Electrical Insulation, 11, 113-121.
[Google Scholar] [CrossRef] 
[11] Delpino, S., Fabiani, D., Montanari, G.C., et al. (2008) Feature Article-Polymeric HVDC Cable Design and Space Charge Accumulation. Part 2: Insulation Interfaces. Electrical Insulation Magazine IEEE, 24, 14-24. ttps://doi.org/10.1109/MEI.2008.4455499
[12] 王霞, 朱有玉, 王陈诚, 等. 空间电荷效应对直流电缆及附件绝缘界面电场分布的影响[J]. 高电压技术, 2015, 41(8): 214-221.
[13] N. Vu, T., Teyssedre, G., Vissouvanadin, B., Le Roy, S. and Laurent, C. (2015) Correlating Conductivity and Space Charge Measurements in Multi-Dielectrics under Various Electrical and Thermal Stresses. IEEE Transactions on Dielectrics and Electrical Insulation, 22, 117-127.
[Google Scholar] [CrossRef] 
[14] 兰莉, 吴建东, 王雅妮, 等. 低密度聚乙烯/乙丙橡胶双层介质的界面空间电荷特性[J]. 中国电机工程学报, 2015, 35(5): 1266-1272.
[15] 郭高飞, 李文鹏, 王亚林, 等. 不同涂层对XLPE和EPDM双层绝缘介质空间电荷特性的影响[J]. 绝缘材料, 2019(7): 80-85.
[16] Takada, T. and Sakai, T. (1983) Measurement of Electric Fields at a Dielectric/Electrode Interface Using an Acoustic Transducer Technique. IEEE Transactions on Electrical Insulation, EI-18, 619-628.
[Google Scholar] [CrossRef] 
[17] Boggs, S., Damon, D.H., Hjerrild, J., Holboll, J.T. and Henriksen, M. (2001) Effect of Insulation Properties on the Field Grading of Solid Dielectric DC Cable. IEEE Transactions on Power Delivery, 16, 456-461.
[Google Scholar] [CrossRef] 
[18] Montanari, G.C. and Morshuis, P.H.F. (2005) Space Charge Phenomenology in Polymeric Insulating Materials. IEEE Transactions on Dielectrics and Electrical Insulation, 12, 754-767.
[Google Scholar] [CrossRef] 

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