空间电荷与直流电导联合测试技术用于纳米MgO抑制XLPE中空间电荷的研究

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (767 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract The nanocomposite is produced by adding different concentrations of nano-MgO, whose particle size is 70nm, to cross linked polyethylene (XLPE). The high field conduction and space charge distribution of samples are studied with a jointing measuring apparatus of dc conduction and space charge. It is found that the conduction mechanism of XLPE and the composites of nano-MgO/XLPE are not dominant by space charge limited current (SCLC) at the room temperature. At the same time, space charge injection threshold of the samples was calculated. It is shown that the addition of nano-MgO could increase the threshold 30.69% higher than that of pure XLPE. Moreover, it is found that the dc conduction of nano-MgO/XLPE decreases firstly and then increases with the increment of nano-MgO content as dc electrical stress is below the injection threshold. Space charge distribution in all samples is investigated and it is found that nano-MgO could well decrease the hetero-charge accumulation and inhibit electron injection in XLPE.

Key words： Polymer nanocomposite nano-MgO joint measuring apparatus of DC conduction and space charge space charge injection threshold

Received: 06 August 2010 Published: 20 March 2014

PACS:

TM215

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	Zheng Yu
	Wu Jiandong
	Wang Qiaohua
	Wang Yaqun
	Yin Yi

Cite this article:

Zheng Yu,Wu Jiandong,Wang Qiaohua等. Research on the Space Charge Suppressing Mechanism of Nano-MgO in XLPE with a Joint Measuring Technology of DC Conduction and Space Charge[J]. Transactions of China Electrotechnical Society, 2012, 27(5): 126-131.

URL:

http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2012/V27/I5/126

[1][1] Yewen Z, Lewiner J, Alquie C.Evidence of strong correlation between space2charge buildup and breakdown in cable insulation[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 1996, 3 (6): 778-783.
[2][2] Takada T, Hayase Y, Tanaka Y. Space charge trapping in electrical potential well caused by permanent and induced dipoles for LDPE /MgO nanocomposite[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2008, 15(1): 152-160.
[3][3] Hayase Y, Aoyama H, Matsui K, et al. Space charge formation in LDPE/MgO Nanocomposite film under ultra-high DC electric stress[J]. IEEJ Transactions on Fundamentals and Materials, 2006, 126(11): 1084- 1089.
[4][4] 王雅群, 尹毅, 李旭光, 等. 纳米MgO掺杂聚乙烯中空间电荷行为的研究[J]. 电线电缆, 2009(3): 20-23.
Wang Yaqun, Yin Yi, Li Xuguang, et al. Study of the space charge behaviour in polyethylene doped with nano-MgO[J]. Electric Wire & Cable, 2009(3): 20-23.
[5][5] Alison J M. A high field pulsed electro-acoustic apparatus for space charge and external circuit current measurement within solid insulators[J]. Measurement Science and Technology, 1998, 9(10): 1737-1750.
[6][6] Takada T, Sakai T. Measurement of electric fields at a dielectric/electrode interface using an acoustic transducer technique[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 1983, 18(6): 619-628.
[7][7] Fukunaga K, Miyata H, Sugimori M, et al. Measurement of charge distribution in the insulation of cables using pulsed electroacoustic method[J]. Electrical Engineering in Japan, 1990, 110(9): 647-648.
[8][8] 尹毅, 韩社教, 屠德民. 固体绝缘中空间电荷测量装置的研制和应用[J]. 中国电机工程学报, 2000, 20(8): 1-5.
Yin Yi, Han Shejiao, Tu Demin. Developing and application of apparatus of space charge measurement in solid insulating materials[J]. Proceedings of the CSEE, 2000, 20(8): 1-5.
[9][9] 陈季丹, 刘子玉. 电介质物理学[M]. 北京: 机械工业出版社, 1980.
[10][10] Many A, Rakavy G.Theory of transient space-charge limited currents in solids in the presence of trapping[J]. Physical Review, 1962, 126(6): 1980- 1988.
[11][11] Suh K S, Lee C R, Noh J S, et al.Electrical conduction in Polyethylene with semiconductive electrodes[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 1994, 1(2): 224-230.
[12][12] Montanari G C. The electrical degradation threshold of polyethylene investigated by space charge and conduction current measurements[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2000, 7(3): 309-315.
[13][13] 尹毅, 陈炯, 李喆, 等. 纳米SiO_x/聚乙烯复合材料强场电导特性的研究[J]. 电工技术学报, 2006, 21(2): 22-26.
Yin Yi, Chen Jiong, Li Zhe, et al. High field conduction of the composites of low-density Polyethylene/Nano-SiO_x[J]. Transactions of China Electrotechnical Society, 2006, 21(2): 22-26.
[14][14] Dissado L A, Laurent C, Montanari.Demonstrating a threshold for trapped space charge accumulation in solid dielectrics under DC field[J].IEEE Transactions on Dielectrics and Electrical Insulation, 2005, 12: 612-620.
[15][15] Fabiani D, Montanari G C, Laurent C, et al. Polymeric HVDC cable design and space charge accumulation Part 1: insulation/semicon interface[J]. IEEE Electrical Insulation Magazine, 2007, 23(6): 11-19.
[16][16] Fothergill J, Stevens G, Laurent C, et al. Characterizing HV XLPE cables through electrical and microstructural measurements performed on cable peelings: the effect of surface roughness and thermal treatment[C]. Proceedings of IEEE Conference on Electrical Insulation and Dielectric Phenomena, Victoria, Canada, 2000.
[17] Montanari G C, Mazzanti G, Fabiani D, et al. Investigation of dc threshold of polyethylenes as a tool for insulation characterization[C]. Proceedings of IEEE Conference on Electrical Insulation and Dielectric Phenomena, Austin, USA, 1999.