Tailoring Electric Field Distortion in High-Voltage Power Modules Utilizing Epoxy Resin/Silicon Carbide Whisker Composites with Field-Dependent Conductivity

Based on the basic theory of electromagnetic field, the Electric Field Distortion (EFD) in power frequency electric field caused by induced current of human body has been analyzed. The enhancement factor of the electric field distortion is introduced to reduce the influences caused by human body in the measurement of high voltage electric fields. The Ansoft Maxwell is used to simulate and calculate the electric field distribution under the influence of the human body to have the value of enhancement factor. In addition, the enhancement factor has been corrected by experiment with the electromagnetic field analyzer EFA300. With the enhancement factor introduced in this paper, the measurement error can be reduced.

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Research on the electric field intensity distribution of high-voltage cable terminal improved by non-linear material

Manufacturing Review ◽

10.1051/mfreview/2021018 ◽

2021 ◽

Vol 8 ◽

pp. 23

Author(s):

Guowei Li ◽

Yong Wang ◽

Xuexia Xu

Keyword(s):

Field Strength ◽

Electric Field ◽

High Voltage ◽

Silicone Rubber ◽

Internal Field ◽

Field Distortion ◽

Non Linear ◽

Calculation Results ◽

Linear Material ◽

Silicone Rubbers

The electric field distortion caused by the high voltage current environment in the cable terminal will greatly increase the failure probability and reduce the operation safety; therefore, it is necessary to ensure the uniform distribution of the electric field in the terminal. This paper briefly introduced the high-voltage cable terminal and non-linear materials. The traditional silicone rubber and the silicone rubber added with nano-SiO2 were prepared. The electrical conductivity of the two silicone rubbers was tested, and the electric field of the cable terminal was simulated. The results demonstrated that the nano-SiO2 improved silicone rubber had a higher non-linear conductivity and was less affected by temperature. The calculation results of the simulation model also showed that the distribution of the internal field strength was more uniform, and the maximum field strength on the reinforced insulation was smaller after the improved silicone rubber was used as the reinforced insulation.

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Analysis And Study On Distribution Of Defect Electric Field On Basin-type Insulator In GIS

E3S Web of Conferences ◽

10.1051/e3sconf/20185301015 ◽

2018 ◽

Vol 53 ◽

pp. 01015

Author(s):

Qikun Feng ◽

Nianqin Dai

Keyword(s):

Electric Field ◽

Power System ◽

Simulation Model ◽

High Voltage ◽

Electric Network ◽

Operation And Maintenance ◽

Field Distortion ◽

Actual Operation ◽

Simulation Results ◽

Gas Insulated Substation

With the increase of electric network voltage in power system, the internal discharge phenomenon of gas insulated substation (GIS) during operation often happens. In this paper, a 3-D simulation model of GIS with metal protrusion on basin-type insulator was utilized to study the effect of metal protrusion on the electric field distortion in GIS. It can be concluded from simulation results that the electric field increases with the height of metal protrusion when the radius is constant, while decrease with the increase of radius of metal protrusion. In addition, the metal protrusion near high voltage conductor lead to more severe electric field distortion than that near grounded enclosure. This work is of significance for the actual operation and maintenance of GISs in the power system.

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Electric field investigation in high voltage power modules using finite element simulations and partial discharge measurements

38th IAS Annual Meeting on Conference Record of the Industry Applications Conference, 2003. ◽

10.1109/ias.2003.1257662 ◽

2004 ◽

Cited By ~ 26

Author(s):

D. Frey ◽

J.L. Schanen ◽

J.L. Auge ◽

O. Lesaint

Keyword(s):

Finite Element ◽

Electric Field ◽

High Voltage ◽

Partial Discharge ◽

Field Investigation ◽

Finite Element Simulations ◽

Power Modules ◽

Discharge Measurements

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Synthesis of Silicon Carbide Whiskers in Electric Field Furnace

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.368-372.831 ◽

2008 ◽

Vol 368-372 ◽

pp. 831-833

Author(s):

Chang Hong Dai ◽

Zu Wei Song ◽

Ru Zhao

Keyword(s):

Activation Energy ◽

Silicon Carbide ◽

Carbon Black ◽

Electric Field ◽

Influencing Factors ◽

High Voltage ◽

Raw Materials ◽

Silicon Carbide Whiskers ◽

Sic Whiskers ◽

Reaction Speed

A new heating apparatus for synthesizing SiC whiskers was introduced. SiC whiskers were synthesized in electric field furnace with carbon black and SiO2 powders as raw materials and some influencing factors were discussed. SiC whiskers with diameter of 0.1-0.4μm, length of 5-70μm and average purity of 99.6% were acquired at lower temperatures of 1200-1400°C for a shorter holding time of 2-4h. The results showed that the high voltage field has great catalysis action on synthetic of SiC whiskers by reducing activation energy and enhancing reaction speed.

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