Results 91 to 100 of about 59,015 (252)
High Voltage, EarlyView.ABSTRACT Large‐capacity generator circuit breaker (GCB) based on vacuum interrupter technology is the key power equipment to ensure the safe operation of the power system. When the short‐circuit current was forced to cross zero, the large‐capacity GCB was difficult to generate a zero‐voltage environment through freewheeling, the vacuum interrupter (VI)
Xiangyu Han +8 more
wiley +1 more source
Gaoya dianqi, 2011 根据多年积累的SF6分解产物检测数据和对多起SF6电气设备故障的分析结论,笔者阐述了通过SF6分解产物体积分数检测判断SF6电气设备是否存在故障的理论依据和实际可行性,分析了SF6电气设备故障诊断的实际案例和故障诊断过程,为SF6电气设备的监督检测和故障诊断提供参考。
李国兴, 姜子秋, 王晓丹
doaj
AIP AdvancesWith the widespread application of new environmentally friendly insulating gases in high-voltage power equipment, the large amounts of existing SF6 in such equipment will gradually be phased out, highlighting the challenges of its recovery and ...
Dongwei Sun +8 more
doaj +1 more source
A new airtight sampling method for sulfur hexafluoride (SF6) in groundwater
MethodsXIn the past 20 years, sulfur hexafluoride (SF6) has been considered a highly reliable tracer for assessing modern water (< 65 yrs old) in groundwater.
Raka Sunderland +3 more
doaj +1 more source
AIP Advances, 2018 The high-temperature effect gas SF6 is used in the power industry, and its emissions are increasing daily. Therefore, the degradation of SF6 is particularly important.
Ying Zhang +4 more
doaj +1 more source
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
wiley +1 more source
Gaoya dianqi, 2015 文中阐述了SF6电气设备中的SF6气体密度下降和微水超标的危害性,并综合分析了SF6电气设备中SF6气体密度和微水监测的现状。为了预防这些危害,提出并研制了SF6电气设备中气体内部微水和密度的在线监测装置,该监测装置通过对SF6气体的循环,实现了内部微水和密度的在线监测,实时了解SF6气室内部水分含量和密度值的变化情况,这对掌握SF6气体的状态,及时预防和排除安全事故,从而保证供电设备的正常运行很有价值。
李秀广 +7 more
doaj
Study of the turbulent mixing zone induced by the Richtmyer-Meshkov instability using Laser Doppler Velocimetry and Schlieren visualizations [PDF]
, 2012 An experimental study of the compressible mixing generated by the Richtmyer-Meshkov instability (RMI) is carried out in a vertical shock tube by means of two-components Laser Doppler Velocimetry (2C-LDV) measurements and Time-resolved Schlieren ...
Bouzgarrou, Ghazi +4 more
core
Negative ion Time Projection Chamber operation with SF$_{6}$ at nearly atmospheric pressure
, 2017 We present measurements of drift velocities and mobilities of some innovative negative ion gas mixtures at nearly atmospheric pressure based on SF$_{6}$ as electronegative capture agent and of pure SF$_{6}$ at various pressures, performed with the NITEC ...
Baracchini, E. +5 more
core +1 more source
Anisotropy in Dry‐Type Valve‐Side Bushings of Converter Transformer: Phenomena and Effects
High Voltage, EarlyView.ABSTRACT The safe and stable working of dry‐type valve‐side bushings, important components of converter transformers, is essential. In recent years, poor design has led to several core breakdown, flashover and cracking failures. The bushing cores, composed of crepe paper and aluminium foil, exhibit significant anisotropic physical properties due to its
Gaoyi Shang +6 more
wiley +1 more source