Partial Discharge Transmission Characteristics and Measurement Technology for Long-distance Gas Insulated Transmission Line in Tunnel

Sasaki, Kensuke; Miyazaki, Akio; Gomi, Y.; Takinami, Naoki; Araki, T.; Nishima, Hideaki; Sudoh, Akihisa; Yamaguchi, Hiroaki; Kamei, Mitsuhito; Miyashita, Makoto

doi:10.1541/ieejpes1990.117.8_1181

Cited by 2 publications

(3 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recently, electromagnetic waves of extremely wide frequency range including the VHF to UHF bands have been used for partial discharge detection. In the so-called UHF method, with generally less noise, the frequency band of 300 MHz to 1.5 GHz is used, while in the case of a long-distance line such as GIL (gas-insulated line), the comparatively low-frequency band around 100 MHz, with less attenuation, is occasionally used [9]. Thus, the optimum detection frequency band is selected from a wide range of frequency bands up to 1.5 GHz for detecting the partial discharge in GIS, according to the noise level and system configuration.…”

Section: Introductionmentioning

confidence: 99%

“…As for the TEM mode, since the test can be conducted using a dummy pulse and the characteristics can be replaced as a transmission line, its propagation and resonance characteristics have been analyzed [8,9,14,15]. Among the propagation characteristics, the attenuation characteristic has been frequently reported because it is related to the sensor arrangement and detectivity [8,9,13,16,17]. On the other hand, reports on modal measurement and analysis of TE and TM modes are few.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Resonance characteristics and identification of modes of electromagnetic waves excited by partial discharges in GIS

et al. 2000

Self Cite

View full text Add to dashboard Cite

Electromagnetic waves are used for detection of partial discharges (PD) in GIS (gas‐insulated substations). A very wide frequency band up to 1.5 GHz is utilized for detection. There are three categories of electromagnetic wave which can be excited and propagate in coaxial cylindrical structures like GIS, namely, TEM, TE, and TM modes. The characterization and identification of each mode is indispensable to understanding the partial discharge phenomena in GIS. In this paper, peaks in the frequency spectrum excited by PD are identified in each mode and the resonant characteristics of each mode are studied. The following are the major results: (1) The resonance peaks appear at the frequencies defined by the spacer distance. (2) The intensity of each mode depends on the position of discharge source along the radial direction. The lower‐order modes including TEM are excited when a discharge source is located near the center conductor. On the other hand, higher‐order modes are excited when the discharge source is at the enclosure surface. (3) The experimental profile of each mode excited by PD along the radial direction approximately agrees with the general theory of electromagnetic wave propagation in coaxial cylindrical cavity. © 2000 Scripta Technica, Electr Eng Jpn, 131(2): 1–11, 2000

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Resonance characteristics and identification of modes of electromagnetic waves excited by partial discharges in GIS

et al. 2000

Self Cite

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

Resonance Characteristics and Identification of Modes of Electromagnetic Waves Excited by Partial Discharges in GIS

et al. 1998

Self Cite

View full text Add to dashboard Cite

SUMMARYElectromagnetic waves are used for detection of partial discharges (PD) in GIS (gas-insulated substations). A very wide frequency band up to 1.5 GHz is utilized for detection. There are three categories of electromagnetic wave which can be excited and propagate in coaxial cylindrical structures like GIS, namely, TEM, TE, and TM modes. The characterization and identification of each mode is indispensable to understanding the partial discharge phenomena in GIS. In this paper, peaks in the frequency spectrum excited by PD are identified in each mode and the resonant characteristics of each mode are studied. The following are the major results: (1) The resonance peaks appear at the frequencies defined by the spacer distance. (2) The intensity of each mode depends on the position of discharge source along the radial direction. The lower-order modes including TEM are excited when a discharge source is located near the center conductor. On the other hand, higher-order modes are excited when the discharge source is at the enclosure surface.

show abstract

Partial Discharge Transmission Characteristics and Measurement Technology for Long-distance Gas Insulated Transmission Line in Tunnel

Cited by 2 publications

References 1 publication

Resonance characteristics and identification of modes of electromagnetic waves excited by partial discharges in GIS

Resonance characteristics and identification of modes of electromagnetic waves excited by partial discharges in GIS

Resonance Characteristics and Identification of Modes of Electromagnetic Waves Excited by Partial Discharges in GIS

Contact Info

Product

Resources

About