Results 61 to 70 of about 188 (115)
Supressores de Transitórios de Alta Frequência em Subestações Isoladas a Gás SF₆. [PDF]
, 2016 Transitórios de frequência muito alta, Very Fast Transients, devido a manobras ou flashovers em equipamentos de alta tensão isolados a gás SF₆ já são pesquisados e tem sua caracterização bem definida há mais de três décadas.
RODRIGUES FILHO, José Guilherme
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Gaoya dianqi, 2017 在特快速瞬态过电压（very fast transient overvoltage,VFTO）的研究进程中,隔离开关操作过程中电弧重燃与熄弧的等效模型的建立,对VFTO计算结果有着重要的影响。采用ATP-EMTP内建MODELS模块,结合Mayr电弧分析理论,并考虑电弧电流过零熄弧的影响,建立了一种动态电弧模型。将该模型应用于某500 kV GIS电站VFTO计算中,并与另两种模型进行比较,详细分析其特性,结果表明,与简单电弧模型相比,动态电弧模型考虑了弧道电阻动态变化过程,使得VFTO最大幅值减小 ...
刘文博 +5 more
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Gaoya dianqi, 2013 全封闭SF6气体绝缘组合电器（gas insulated switchgear,GIS）中隔离开关操作产生的特快速暂态过电压（very fast transient overvoltage,VFTO）会严重影响电力系统的稳定性及相关设备的安全运行。通过研究GIS隔离开关的击穿过程和电弧的发展变化过程,进而采用合理的电弧模型进行仿真计算,对于得到较为准确的VFTO波形有重要意义。笔者对当前VFTO仿真中GIS隔离开关的传统电弧模型、改进模型及电弧特性的试验研究等进行了详细的介绍 ...
刘教民 +4 more
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VFT insulation coordination study of a 400 kV GIS
, 2014 In November 2008 the Danish government decided that all overhead lines below 400 kV should be replaced by underground cables. This is due to a demand of reducing the overall visibility of the transmission system, sometimes referred to as the ...
Bak, Claus Leth +3 more
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VOLTAGE DISTRIBUTION ALONG REACTOR WINDING UNDER VERY FAST TRANSIENTS [PDF]
, 2011 Electricity is a necessity of the modern life due to its everywhere usage. Its proper continuity depends on the reliability of the equipments used in power system. The transformer is one of the basic components which are commonly used in the power system,
ANWAR, SAEED, EJAZ, SALMAN
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Time-domain Analysis of Multiconductor Transmission Lines Excited by Transient Electromagnetic Disturbances Based on the Analog Behavior Modeling [PDF]
, 2020 L'abstract è presente nell'allegato / the abstract is in the ...
DU, ZIWEIHUA
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Analysis of influential factors in determining Very Fast Transient Overvoltages of GIS substations [PDF]
, 2014 High voltage Gas Insulated Substation (GIS) is threatened by Very Fast Transient Overvoltage (VFTO) which is high amplitude and high frequency transient within the range from 100 kHz up to 50 MHz in power systems. Operation of Disconnecting Switch is the
Babaei, Maziar +2 more
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Self-Calibration Sensor for Contactless Voltage Measurement Based on Dynamic Capacitance. [PDF]
Sensors (Basel), 2023 Suo C +5 more
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Transmission Line Voltage Measurement Utilizing a Calibrated Suspension Grounding Voltage Sensor. [PDF]
Sensors (Basel), 2023 Huang R +5 more
europepmc +1 more source
Transient Overvoltages in Gas Insulated Systems [PDF]
Studio del transitorio elettrico di una linea di trasmissione mista a 400kV composta da OHL e GIL; utilizzando il software ElectroMagnetic Transient Program EMTP. Studio di sovratensioni interne, dovute a manovre di rete, e sovratensioni esterne dovute a
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