Metallic Particle Motion in 3-Phase SF<sub>6</sub> Gas Insulated Bus

Yanabu, S.; Ōkubo, H.; Matsumoto, Shoichi; Aoyagi, H.; Kobayashi, Noboru

doi:10.1109/mper.1987.5527307

Cited by 6 publications

(7 citation statements)

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“…As a consequence, the moving distance of the particle in the horizontal direction is also increased, and it would need a higher voltage to be lifted off. However, according to (11), the initial position and the friction coefficient has little impact on the critical lifting voltage U H , and the critical jumping is almost independent on such quantities.…”

Section: Critical Jumping Pointmentioning

confidence: 99%

Motion behaviour of metallic particle under diverging conducting electrode considering the random collision and reflection

Sun

Luo

Liu

et al. 2020

IET Science, Measurement &Amp; Technology

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An improved model for the motion dynamics of a metallic particle located in the non-uniform electric field area in the gas insulated system is proposed. To represent the special area, a diverging conducting electrode is used in this study. Based on the fluid mechanics theory, the forces imposed on metallic particle are first developed. The motion process is then divided into two modes, i.e. the particle rolls on the electrode surface and moves in the gap. The collision and reflection processes between the particle and the electrode are crucial to the motion, and they are fully considered in the proposed model. The trajectory of the particle under different voltages is obtained. The evolution of metallic particle is divided into four stages, and it is featured by four quantities, i.e. the critical jumping point, the minimum horizontal position, the falling point, and the motion time. The characteristics for each stage are analysed, and the sensitivity analysis of the quantities are performed. The impacts of the applied voltage, the particle radius, the initial position etc. are discussed. The results provide guidance for particle trap design.

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Section: Critical Jumping Pointmentioning

confidence: 99%

Motion behaviour of metallic particle under diverging conducting electrode considering the random collision and reflection

Sun

Luo

Liu

et al. 2020

IET Science, Measurement &Amp; Technology

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“…Without the influence of the gas buoyancy, if + > is establish, the conducting particle will float from the ground electrode surface and eventually reach the high voltage electrode. When the particles approach the high voltage electrode, the gap discharge will be produced between the particle and the high voltage electrode [9][10][11]. This discharge will lead to two results: 1) The particle changes the polarity； 2) The partial discharge causes the gap breakdown.…”

Section: Fig 2 Test Set-upmentioning

confidence: 99%

Investigation of states recognition of motion conducting particles under DC voltages using the pulse current method

Dong

Liu

Gao

et al. 2013

2013 Annual Report Conference on Electrical Insulation and Dielectric Phenomena

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Gas insulated switchgear (GIS) is widely used in the power system, due to its high reliability and great insulation characteristics. However, partial discharge (PD) caused by particle contamination in GIS threatens the stability and reliability of power system. Experiments have been carried out to observe the motion trials of single macroscopic conducting particle under DC voltages. Simultaneously, the pulse current signals have been measured. The result shows that the dominant frequency of PD signals for conducting particle under DC voltage is in the range of 0~7 MHz. In this paper, a method that recognized the particle states is proposed based on pulse characteristic parameter maps which consist of time intervals between pulses (Δt), discharge numbers (n) and discharge charges (q). The result indicates that pulse characteristic parameter maps can be used to recognize the motion states of metallic particle.

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“…In the other hand the application of three-phase power apparatus in the electric power system has been increasing. The design of three-phase in one tank such as three-phase power cable and three-phase gas insulated switchgear has been applied in the electric power system [8][9].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Distribution, Pattern, and Vector of Electric Field in the Inter Phases Region of Three-phase Gas Insulated Switchgear

Khayam

2013

ijeei

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This paper deals with the electric field characteristics in the inter-phases region of three-phase gas insulated switchgear (GIS). The electric field in a three-phase construction of a simplified GIS model was analyzed. The results show that in the interphases region the direction and the magnitude of electric field vector varies with the location of the observation point while in the phase-enclosure region the direction of the electric field vector tends to linear and constant. There is no zero electric field on the particle tip of a particle in the inter-phases region, except S90 particle. There is zero electric field on the particle tip of a particle in the phase-enclosure region every half cycle of applied voltage. The maximum electric field of the particles on the inter-phases region generally is higher than one of the particles on the phase-enclosure region. The electric field vector locus in the inter-phases region varies: linear, elliptic, or circular while one in phase-enclosure region is constant and linear.

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Metallic Particle Motion in 3-Phase SF₆ Gas Insulated Bus

Cited by 6 publications

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Motion behaviour of metallic particle under diverging conducting electrode considering the random collision and reflection

Motion behaviour of metallic particle under diverging conducting electrode considering the random collision and reflection

Investigation of states recognition of motion conducting particles under DC voltages using the pulse current method

Analysis of Distribution, Pattern, and Vector of Electric Field in the Inter Phases Region of Three-phase Gas Insulated Switchgear

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Metallic Particle Motion in 3-Phase SF6 Gas Insulated Bus

Cited by 6 publications

References 0 publications

Motion behaviour of metallic particle under diverging conducting electrode considering the random collision and reflection

Motion behaviour of metallic particle under diverging conducting electrode considering the random collision and reflection

Investigation of states recognition of motion conducting particles under DC voltages using the pulse current method

Analysis of Distribution, Pattern, and Vector of Electric Field in the Inter Phases Region of Three-phase Gas Insulated Switchgear

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Metallic Particle Motion in 3-Phase SF₆ Gas Insulated Bus