Design of UHVDC Wall Bushing and its Electric Field Simulation

2013 ◽  
Vol 753-755 ◽  
pp. 2526-2530
Author(s):  
Yu Mei Li ◽  
Tao Ding ◽  
Qiu Dong He
Keyword(s):  
Field Theory ◽  
Electric Field ◽  
High Voltage ◽  
Power Transmission ◽  
Work Conditions ◽  
Technical Parameters ◽  
Field Simulation

Reviewing and analyzing insulation mechanism of high voltage wall bushing, the structure of 1100kV UHVDC wall bushing and its key technical parameters are designed according to work conditions. Insulation structure and electric field of key bushing parts are simulated by ANSYS11.0. And the solution is optimized by SubProblem method based on the DC field theory. The result indicated that the parameters of designed solution could meet the needs of 1100kV UHVDC power transmission project.

scholarly journals Electric Field Simulation Around Contaminated SIR Insulators Using MATLAB

2018 ◽  
Vol 8 (1) ◽  
pp. 2542-2545
Author(s):  
G. Satheesh ◽  
B. Basavaraja ◽  
P. M. Nirgude
Keyword(s):  
Electric Field ◽  
High Voltage ◽  
Transmission Lines ◽  
Silicone Rubber ◽  
Insulator Surface ◽  
Field Simulation

High voltage insulators are mainly used to support transmission lines. This paper focuses on simulating the electric field along the surface of contaminated Silicone Rubber (SIR) insulators. The electric field (EF) distribution is important to determine the EF stress occurring on the insulator surface. So, the EF distribution is analyzed using a FEM tool in MATLAB under various conditions. Two types of insulators, straight and alternate sheds, were considered. Results showed that higher EF stresses occurs on the trunk portions of both straight shed and alternate shed types. Also, the results showed higher EF magnitude on the straight shed compared to the alternate shed, under both clean and contamination conditions.

scholarly journals Study on Surface Electric Field Simulation of High Voltage Transmission Line Assembly

2014 ◽  
Vol 02 (04) ◽  
pp. 554-563
Author(s):  
Liankai Chen ◽  
Wenqing Lai ◽  
Jun Wang ◽  
Guoyi Jiang ◽  
Yan Zhou ◽  
...  
Keyword(s):  
Electric Field ◽  
Transmission Line ◽  
High Voltage ◽  
High Voltage Transmission Line ◽  
Field Simulation ◽  
Surface Electric Field ◽  
High Voltage Transmission

scholarly journals Quantitative Analysis of Plant Growth Exposed to Electric Fields

2015 ◽  
Vol 16 (2) ◽  
pp. 207
Author(s):  
Hussein Ahmad ◽  
Mohd Hafizi Ahmad ◽  
Noor 'Aliaa Awang ◽  
Izzah Hazirah Zakaria
Keyword(s):  
Quantitative Analysis ◽  
Electric Field ◽  
Electric Fields ◽  
High Voltage ◽  
Transmission Lines ◽  
Power Transmission ◽  
Germination Rate ◽  
Power Transmission Lines ◽  
High Power Transmission ◽  
Electromagnetic Radiations

<p>Electromagnetic radiations present in the environment has a profound effect on the growth of vegetable plant primarily grown under the high power transmission lines. The high electric field generated due to ultra high voltage causes the increase and reduction in the size of the plants. Numerous research have been carried out to investigate the effect of electric field on the plants. However, the knowledge in term of quantitative analysis on the effect of electric field on the growth of vegetables is not entirely understood. Thus, this paper presents a study conducted to investigate the effect of high voltage DC electric fields on the young vegetables growth namely ‘Choy Sam’ and bean sprout. The experimental setup was designed which composed of two parallel plate electrodes. This research was focused on the percentage of germination and growing rate of young vegetables. The growth of the young vegetables during exposure was calculated by using statistical methods. The analysis of the results showed that the electric fields and the electric fields treated water have influenced the germination rate and height of stems of both young vegetables causing the increase in stem height.</p><p> </p>

scholarly journals Reduction of the Environmental Impact of Electric Field Generated by High Voltage Power Transmission Lines

Energies ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 6388
Author(s):  
Rafał Tarko ◽  
Konrad Kochanowicz ◽  
Wiesław Nowak ◽  
Waldemar Szpyra ◽  
Tadeusz Wszołek
Keyword(s):  
Environmental Impact ◽  
Electric Field ◽  
High Voltage ◽  
Transmission Lines ◽  
Computational Models ◽  
Power Transmission ◽  
Power Lines ◽  
Design Parameters ◽  
Noise Emission ◽  
Field Influence

The growing interest in the negative environmental impact of overhead power lines of high and extra-high voltage stems from the increasing ecological awareness of societies. Consequently, a number of respective legal restrictions have been issued and actions have been undertaken to reduce this impact, especially in the electric field of the power frequency. The aim of this paper is to analyze the possibilities of reducing the width of electric field influence zones by changing the design parameters of power lines and defining the spatial distribution of its conductors. This analysis was carried out using the developed and experimentally verified models for determining the electric field and audible noise in the power line environment. The computational models were used to analyze the width of the electric field influence zones of 400 kV lines and the noise levels at the borders of these zones. The research focused on single and double circuit 400 kV power lines. It was revealed that a reduction in electric field emissions is accompanied by an increase in noise emission. However, the analyses confirmed that the width of the electric field influence zones can be significantly reduced if the most important design and construction parameters of the line are properly selected. The obtained conclusions are valid not only for 400 kV lines, but also set directions to follow when changing the parameters of high voltage transmission lines of other rated voltages (above 100 kV).

scholarly journals Electric Field Analysis of Press-Pack IGBTs

2018 ◽  
Vol 64 ◽  
pp. 04006
Author(s):  
Tang Xinling ◽  
Pan Yan ◽  
Chen Yanfang ◽  
Fu Pengyu ◽  
Zhao Zhibin
Keyword(s):  
Electric Field ◽  
High Voltage ◽  
Failure Modes ◽  
Power Transmission ◽  
Electrical Insulation ◽  
Field Analysis ◽  
Insulation Failure ◽  
Igbt Module ◽  
The Press ◽  
Electric Field Analysis

High voltage IGBT module is the ideal option for the VSC-HVDC power transmission application. At present, wire-bonded technology and press-pack technology are available packaging technologies for high voltage IGBT. The press-pack IGBTs have such advantages as low inductance, low thermal impedance and short circuit failure mode than the wire-bonded IGBT module, which especially suit for high voltage power transmission application by series connection. However, the electrical insulation failure modes of press-pack IGBTs are much less known with limited literature published. In this paper, we presented the electric field analysis of a 3D press-pack IGBT model under DC rating voltage test condition. The electric field distribution of the press-pack IGBT stack was solved as an electrostatic problem by employing the finite element method. The results revealed the potential electrical insulation failure modes of the press-pack IGBTs: corona discharge at the edge of silver plate, partial discharge at the micro gap between die and PEEK frame and creeping discharge at the surface of PEEK frame.

scholarly journals Estimating the electric field response to the Halloween 2003 and September 2017 magnetic storms across Scotland using observed geomagnetic fields, magnetotelluric impedances and perturbation tensors

2020 ◽  
Vol 10 ◽  
pp. 48 ◽  
Author(s):  
Fiona Simpson ◽  
Karsten Bahr
Keyword(s):  
Magnetic Field ◽  
Electrical Conductivity ◽  
Electric Field ◽  
Electric Fields ◽  
High Voltage ◽  
Transmission Lines ◽  
Power Transmission ◽  
Impedance Tensor ◽  
Power Transmission Lines ◽  
Peak Electric Field

Geomagnetic storms generate heightened magnetovariational activity, which induces electric fields that drive hazardous currents known as geomagnetically induced currents (GICs) through man-made technological conductors including power transmission lines, railway networks and gas pipelines. We multiply magnetotelluric (MT) impedances from 23 sites in Scotland and northern England with measured geomagnetic field spectra from the Halloween 2003 and September 2017 storms to estimate maximum peak-to-peak, electric field magnitudes and directions for these storms, which we present as hazard maps. By sampling these electric fields in the direction of the longest (>50 km), high-voltage (275 and 400 kV) Scottish power transmission lines and integrating along their lengths, we estimate their associated transmission-line voltages. Lateral electrical conductivity variations in the Earth generate horizontal magnetic field gradients. We investigate the effect of these gradients on electric field estimates obtained using remote magnetic fields by applying a correction to the impedance tensor derived from the magnetic perturbation tensor between the local MT site and the remote magnetic field site. For the September 2017 storm, we also compare our estimated electric fields with a unique dataset comprising measured storm-time electric fields from 7 MT sites. We find that peak-to-peak, electric field magnitudes may have reached 13 V/km during the Halloween storm in some areas of the Scottish Highlands, with line-averaged electric fields >5 V/km sustained along a number of long-distance, high-voltage power transmission lines; line-averaged electric fields for the September 2017 storm are 1 V/km or less. Our surface electric fields show significant site-to-site variability that arises due to Earth’s internal 3D electrical conductivity structure, as characterised by the MT impedance tensors.

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