Space charge accumulation and breakdown in LDPE and LDPE/MgO nano-composite under high dc stress at various temperatures

Yoshida, Jun; Maezawa, T.; Miyake, Hiroaki; Tanaka, Yasuhiro; Takada, Tatsuo; Sekiguchi, Y.; Murata, Y.; Reddy, C. C.

doi:10.1109/ceidp.2009.5377837

Cited by 28 publications

(17 citation statements)

References 7 publications

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“…It strongly depends upon the environment condition, such as temperature, humidity, atmospheric pressure and so on [20,29,30]. Figure 10 shows the breakdown strength of pure PI film and PI/Al 2 O 3 nanocomposites with different doped wt% nano-Al 2 O 3 content measured at 25 and 230 ℃ respectively.…”

Section: Breakdown Voltage In Different Temperature Environmentmentioning

confidence: 99%

Investigation of temperature effects on voltage endurance for polyimide/Al₂O₃nanodielectrics

Luo

Liu

et al. 2014

IEEE Trans. Dielect. Electr. Insul.

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In order to investigate the effects of inorganic nanofillers on the electrical properties of polyimide (PI), PI/Al 2 O 3 nanocomposites films were prepared via the in-situ polymerization. The hybrids films were characterized by scanning electron microscope (SEM) and Fourier transform infrared spectroscopy (FTIR). The dielectric behaviors of pure PI and PI/Al 2 O 3 samples were studied as a function of the measured frequencies and temperatures. Meanwhile, the breakdown strength of pure PI and PI/Al 2 O 3 samples measured at 25 and 230 ℃ was analyzed. The corona-resistant lifetime of samples under bipolar continuous square impulse voltage (BCSIV) was performed. With the wt% content of Al 2 O 3 nanoparticles increasing, the real (ε') and imaginary (ε") of relative permittivity present an increasing tendency, while electrical breakdown strength declines obviously. The Al 2 O 3 nanofillers improved the corona-resistant property of PI and the corona-resistant lifetime of PI/Al 2 O 3 sample with 25 wt% (weight percent) of nano-Al 2 O 3 particles is over 23 times longer than that of the pure PI film. Besides, the temperature is an important factor which would significantly influence the electrical properties of pure PI and PI/Al 2 O 3 samples. The elevated temperature would reduce the breakdown voltage and corona-resistant property.

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Section: Breakdown Voltage In Different Temperature Environmentmentioning

confidence: 99%

Investigation of temperature effects on voltage endurance for polyimide/Al₂O₃nanodielectrics

Luo

Liu

et al. 2014

IEEE Trans. Dielect. Electr. Insul.

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“…95 Nanodielectrics 96,97 became a fashionable topic over the years, and it is believed that in these materials charge injection may be suppressed. [98][99][100][101] While huge amounts of both positive and negative packetlike charge injection was observed when investigating LDPE samples by PEA, this phenomenon was absent in nano-MgOfilled LDPE even at high field. 102 Similar results were reported for MgO 100 or Al 2 O 3 108 filled epoxy resins.…”

Section: Fillermentioning

confidence: 99%

Research progress on space charge characteristics in polymeric insulation

Zhang¹,

Christen

Meng³

et al. 2016

J. Adv. Dielect.

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Due to their excellent electrical insulation properties and processability, polymer materials are used in many electrical products. It is widely believed that space charge plays an important role for the electric field distribution, conduction, ageing, and electric breakdown of polymeric insulation. This paper reviews measurements and characteristics of space charge behavior which mainly determined by the pulsed electro-acoustic (PEA) measurement technique. Particular interests are the effects of the applied voltage, the electrodes, temperature, humidity, microstructure, additives, and filler materials on accumulation, distribution, transport, and the decay of space charge in polymeric materials. This review paper is to provide an overview on various space charge effects under different conditions, and also to summarize the information for polymeric materials with suppressed space charge and improved electrical behavior.

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“…Recently, it is very interesting to find out that the nano-sized magnesia particles (MgO), among the various nanoparticles, offer LDPE excellent electrical insulating properties and therefore become the promising candidate filler for HVDC cables. It has been reported that addition of a small amount of MgO nanoparticles to LDPE polymer can increase the volume resistivity [9], enhance the breakdown strength [10][11][12][13], prevent the extension of electrical tree [14], reduce the relative permittivity [15] and suppress the accumulation of space charge [16]. What should be emphasized is that the space charge is a key parameter for evaluating the quality and service life of HVDC cables made of LDPE [17,18].…”

Section: Introductionmentioning

confidence: 98%

Improved electrical insulating properties of LDPE based nanocomposite: Effect of surface modification of magnesia nanoparticles

Zhang

Chen

et al. 2014

Composites Part A: Applied Science and Manufacturing

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Space charge accumulation and breakdown in LDPE and LDPE/MgO nano-composite under high dc stress at various temperatures

Cited by 28 publications

References 7 publications

Investigation of temperature effects on voltage endurance for polyimide/Al₂O₃nanodielectrics

Investigation of temperature effects on voltage endurance for polyimide/Al₂O₃nanodielectrics

Research progress on space charge characteristics in polymeric insulation

Improved electrical insulating properties of LDPE based nanocomposite: Effect of surface modification of magnesia nanoparticles

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Space charge accumulation and breakdown in LDPE and LDPE/MgO nano-composite under high dc stress at various temperatures

Cited by 28 publications

References 7 publications

Investigation of temperature effects on voltage endurance for polyimide/Al2O3nanodielectrics

Investigation of temperature effects on voltage endurance for polyimide/Al2O3nanodielectrics

Research progress on space charge characteristics in polymeric insulation

Improved electrical insulating properties of LDPE based nanocomposite: Effect of surface modification of magnesia nanoparticles

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Product

Resources

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Investigation of temperature effects on voltage endurance for polyimide/Al₂O₃nanodielectrics

Investigation of temperature effects on voltage endurance for polyimide/Al₂O₃nanodielectrics