Motion Characteristics of Metal Powder Particles in AC GIL and Its Trap Design

Zhan, Zhenyu; Wang, Dong; Xie, Jun; Xin, Weifeng; Wang, Wei; Zhang, Zhenqian

doi:10.1109/access.2021.3077649

Cited by 10 publications

(4 citation statements)

References 16 publications

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“…The van der Waals force is also analyzed considering the interaction between dust [142] . Previous studies have shown that these theories can be consistent with experiments under specific circumstances.…”

Section: Gρ Amentioning

confidence: 99%

China's 10-year progress in DC gas-insulated equipment: From basic research to industry perspective

Zhang

et al. 2022

iEnergy

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The construction of the future energy structure of China under the 2050 carbon-neutral vision requires compact direct current (DC) gas-insulation equipment as important nodes and solutions to support electric power transmission and distribution of long-distance and large-capacity. This paper reviews China's 10-year progress in DC gas-insulated equipment. Important progresses in basic research and industry perspective are presented, with related scientific issues and technical bottlenecks being discussed. The progress in DC gas-insulated equipment worldwide (Europe, Japan, America) is also reported briefly.

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Section: Gρ Amentioning

confidence: 99%

China's 10-year progress in DC gas-insulated equipment: From basic research to industry perspective

Zhang

et al. 2022

iEnergy

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“…The dispersion of the particle motion distribution increased and then decreased with the increase in diameter. The literature [11] studied the motion and distribution characteristics of metal and semiconductor particles with different particle sizes by constructing a scaled-down GIL model, and a trapping coefficient was proposed to characterize the trap trapping effect.…”

Section: Introductionmentioning

confidence: 99%

Study on the Capture Effect of Particle Trap in 1000 kV AC GIL

et al. 2023

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In this paper, a 1000 kV gas insulated transmission line (GIL) prototype with a basin insulator and a three-post insulator structure was designed and developed to study the particle motion behavior in an ultra high voltage (UHV) GIL. Particle traps were arranged on the convex side of the basin insulator and near the three-post insulator. Aluminum and copper particles were arranged in front of and on the surface of the traps. A short-time voltage application procedure and a graded long-time voltage application procedure were designed to investigate the difference in the capture effect of the traps on the two types of particles when the test voltage was applied to the prototype through these two voltage application procedures. The results of the study show that the particle motion behavior is complex under AC voltage. The placement of the particles, their own properties and the voltage application procedure all affect the motion behavior of the particles. The trap with the grid structure is effective in capturing particles near both the convex side of the basin insulator and the three-post insulator. At the end of the test, some of the particles went inside the trap and some of them gathered at the edge of the trap. The graded long-time voltage application procedure with a small voltage application gradient and a long duration enables the particles to move sufficiently at a lower voltage to be trapped.INDEX TERMS Particle trap, particle motion, trap capture, UHV GIL.

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“…Judging from the operating experience of GIL in recent decades, insulation failure has always been one of the most important factors affecting the safety and reliability of GIL. In particular, metal particles generated during production, transportation, installation, and operation of GIL equipment are the most common insulation defects [ 4 ]. If these insulation defects cannot be found and dealt with in time, it is likely to endanger other non-faulty components and even develop into insulation faults, threatening the safety of the power supply.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation Research on Partial Discharge of Particle Defects at Epoxy Interface Excited by High-Frequency Sinusoidal Voltage

Chen

Wang

et al. 2023

Polymers

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In order to improve the effectiveness of partial discharge detection in attached metal particle insulators, this paper proposes a partial discharge detection method for particle defects in insulators under high-frequency sinusoidal voltage excitation. In order to study the development process of partial discharge under high-frequency electrical stress, a two-dimensional plasma simulation model of partial discharge with particle defects at the epoxy interface is established under plate–plate electrode structure, which realizes the dynamic simulation of particulate defect partial discharge. By studying the microscopic mechanism of partial discharge, the spatial and temporal distribution characteristics of microscopic parameters such as electron density, electron temperature, and surface charge density are obtained. Based on this simulation model, this paper further studies the partial discharge characteristics of epoxy interface particle defects at different frequencies, and verifies the accuracy of the model from two aspects of discharge intensity and surface damages through experimental means. The results show that with the increase in the frequency of applied voltage, the amplitude of electron temperature shows an increasing trend. However, the surface charge density gradually decreases with the increase in frequency. These two factors make partial discharge severest when the frequency of the applied voltage is 15 kHz.

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Motion Characteristics of Metal Powder Particles in AC GIL and Its Trap Design

Cited by 10 publications

References 16 publications

China's 10-year progress in DC gas-insulated equipment: From basic research to industry perspective

China's 10-year progress in DC gas-insulated equipment: From basic research to industry perspective

Study on the Capture Effect of Particle Trap in 1000 kV AC GIL

Numerical Simulation Research on Partial Discharge of Particle Defects at Epoxy Interface Excited by High-Frequency Sinusoidal Voltage

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