Results 31 to 40 of about 5,269 (164)
Gong-kuang zidonghua, 2014 The paper introduced basic principle, detection and determinants of partial discharge detection method based on a combination method of ultrasound and high-frequency current.
LUO Dongsong, LU Ye
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High Voltage, EarlyView.ABSTRACT Structural mechanics field simulation plays a critical role in the vibration characteristic analysis of electrical equipment. Existing structural field analysis of equipment based on numerical simulation faces challenges such as convergence difficulties and prolonged computational time, failing to meet the demand for real‐time prediction of ...
Wanqing Wang +6 more
wiley +1 more source
Research on the fitting method to describe the mathematical expression of VFTO in GIS
The Journal of Engineering, 2018 Very fast transient over voltage (VFTO) is a unique electromagnetic transient phenomenon occurring in Gas Insulated Substation (GIS), which determines the insulation level of the GIS (above 330 kV).
Reem A. Almenweer, Su Yixin, Wu Xixiu
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High Voltage, 2021 As the power load increases, the capacity of switchgear becomes larger so the problem of overheating of switchgears becomes more significant. Whether the switchgears operate safely and reliably affects the reliability and economy of the entire power ...
Xiaorui Wang +7 more
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Development of ± 550 kV DC GIS Basin Insulator
High Voltage, EarlyView.ABSTRACT The basin insulator is a core component of the insulation system for ± 550 kV gas‐insulated switchgear (GIS). This paper, using a finite element method for multi‐physics simulations of electric–thermal coupling, determines a geometry suitable for the industrial production of ± 550 kV GIS basin insulators.
Shaohua Cao +9 more
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Comparison of Dielectric Recovery After Arc Burning in SF6 Gas and Its Potential Alternatives
High Voltage, EarlyView.ABSTRACT Although sulphur hexafluoride (SF6) exhibits exceptional insulating properties, it is a potent greenhouse gas. Therefore, studying alternatives to SF6 is critical for developing environmentally friendly high‐voltage electrical equipment.
Ziqi Liu +4 more
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Diance yu yibiaoGas-filled switchgear is widely used in high altitude areas of China due to its wide adaptability and high reliability. Due to the reduction of atmospheric pressure in high altitude areas, the air cooling capacity is reduced, so the gas-filled switchgear
WANG Hao +5 more
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A Real-Time IR-Fusion Switchgear Contact Monitoring System (SCMS)
IEEE Access, 2017 In this paper, a real-time monitoring system for switchgear contacts (switchgear contact monitoring system) with continuous thermal monitoring is presented instead of infrequent scanning with a handheld infrared (IR) camera or IR window.
Yunfeng Yan, Donglian Qi, Hong Gu
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800 kV Fast Circuit Breaker: Mechanical Coupling Modelling, Buffer Design and Development
High Voltage, EarlyView.ABSTRACT The 800 kV fast circuit breaker (CB) used in ultra‐high voltage (UHV) converter transformer can reduce the total breaking time to 25 ms. It significantly improves the action speed and breaking capacity of the CB, with promising broad application prospects.
Enyuan Dong +6 more
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High Voltage, EarlyView.ABSTRACT To address the issue of low detection accuracy for zero‐value insulators in distribution lines, this study proposes a novel method for detecting these insulators based on the electroluminescence effect. Through theoretical analysis and experimentation, it was found that the luminescence intensity of ZnS:Cu electroluminescent material varies ...
Jianghai Geng +6 more
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