Consideration of Radiated Electromagnetic Wave from Partial Discharge Based on Half-Wave Dipole Antenna Model

In this article, a portable XLPE cable insulation detection device is introduced. Such a device utilizes electromagnetic coupling, UHF electromagnetic wave and acoustic emission to detect partial discharge signals in power cables. By analyzing the partial discharge signals and cable temperatures, the insulation status of XLPE power cables is judged.

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Design of Broadband Compact Canonical Triple-Sleeve Antenna Operating in UHF Band

Journal of Electromagnetic Engineering and Science ◽

10.26866/jees.2021.4.r.36 ◽

2021 ◽

Vol 21 (4) ◽

pp. 291-298

Author(s):

Chandana SaiRam ◽

Damera Vakula ◽

Mada Chakravarthy

Keyword(s):

Wireless Communication ◽

Instantaneous Frequency ◽

Dipole Antenna ◽

Frequency Range ◽

Broadband Antenna ◽

Operating Frequency Range ◽

Half Wave ◽

Measurement Results ◽

Antenna Configuration ◽

Good Agreement

In this paper, a novel compact broadband antenna at UHF frequencies is presented with canonical shapes. Hemispherical, conical and cylindrical shapes have all been considered for antenna configuration. The designed antenna provides an instantaneous frequency range from 370 to 5,000 MHz with omnidirectional characteristics. The antenna was simulated in CST Microwave Studio, fabricated and evaluated; the results are presented. The simulated and measurement results are in good agreement. The antenna has voltage standing wave ratio (VSWR) ≤ 1.9:1 in 400–570 MHz, 2,530–3,740 MHz and 4,180–4,620 MHz; it has VSWR ≤ 3:1 over the operating frequency range 370–5,000 MHz and the measured gain varies from -0.6 to 4.5 dBi over the frequency band. The concept of canonical-shaped antenna elements and the incorporation of triple sleeves resulted in a reduction of the length of the antenna by 62% compared to the length of a half-wave dipole antenna designed at the lowest frequency. The antenna can be used for trans-receiving applications in wireless communication.

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Simulation Analysis on the Propagation Characteristics of Electromagnetic Wave for Gis Partial Discharge

Information Technology Journal ◽

10.3923/itj.2013.5987.5992 ◽

2013 ◽

Vol 12 (21) ◽

pp. 5987-5992

Author(s):

Wang Xu-Hong ◽

Liu Qiu-Ping ◽

Fan Shao-Sheng

Keyword(s):

Electromagnetic Wave ◽

Simulation Analysis ◽

Partial Discharge ◽

Propagation Characteristics

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Current Detection Methods of Partial Discharge for Distribution Network Switchgear

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.521.313 ◽

2014 ◽

Vol 521 ◽

pp. 313-316

Author(s):

Yu Sheng Quan ◽

Lin Jie Fang ◽

Yan Wu ◽

Zi Jian Wang

Keyword(s):

Electromagnetic Wave ◽

High Frequency ◽

Partial Discharge ◽

Outer Wall ◽

Detection Methods ◽

Total Current ◽

Current Signal ◽

Current Detection ◽

Ground Line ◽

Frequency Current

There are many factors that can lead to partial discharge in the internal of switchgear. High-frequency current will be generated on the inner wall of switchgear when the electromagnetic wave generated by partial discharge reaches the enclosure of switchgear. In the same way, more complex current signal will be produced on the outer wall of the switchgear because of the electromagnetic radiation outside the enclosure. These two currents will flow to earth through the switchgear ground wire. We can determine whether the switchgear exist partial discharge and the severity of the partial discharge by comparing the current flowing through the outer wall and the total current flowing through the ground line.

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The Simulation Research of Partial Discharge Electromagnetic Wave Propagation Characteristics in GIS

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.860-863.2127 ◽

2013 ◽

Vol 860-863 ◽

pp. 2127-2130 ◽

Cited By ~ 1

Author(s):

Shan Jun Zhao ◽

Dong Shen Xu ◽

Zhao Li ◽

Lu Li ◽

Yi Wang ◽

...

Keyword(s):

Wave Propagation ◽

Electromagnetic Wave ◽

Electromagnetic Wave Propagation ◽

Partial Discharge ◽

Electromagnetic Signal ◽

Propagation Characteristics ◽

Electromagnetic Propagation ◽

Accurate Analysis ◽

Simulation Research ◽

Insulation Breakdown

GIS is the most important equipment in power grid. Partial discharge is the main cause leading to insulation breakdown. UHF detection is an effective method for PD detection in GIS. It is significant to obtain the electromagnetic propagation characteristics for the accurate analysis of detection results. The FDTD algorithm is present in this paper to study the electromagnetic signal in GIS. The amplitude and frequency characteristics are studied in this paper.

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