Gaoya dianqi, 2016 精确的隔离开关电弧模型对变电站特快速暂态过电压（very fast transient overvoltage,VFTO）的仿真有着关键性的作用。文中对开关电弧的电阻模型进行了优化,建立了电弧的分段模型。同时,笔者从间隙击穿,高频电弧熄弧对电弧重击穿的影响等方面进行了讨论,并以此为判据,建立了可以反映VFTO多次重燃过程的计算流程。根据实际测试线路,在ATP仿真软件中搭建了仿真电路并进行了暂态仿真。仿真结果表明,相对于单次燃弧的传统电弧模型,基于分段电阻的多次重燃弧模型可以更好地模拟实际开关特性 ...
张建功 +5 more
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Gaoya dianqi, 2010 在隔离开关切合容性小电流试验中,回路中可能会由于隔离开关的多次重燃而产生特快速暂态过电压（very fast transient overvoltage,VFTO）,这对试验回路中的设备和元件,尤其是试验变压器绕组绝缘构成了很大的威胁。笔者利用ATP-EMTP电磁暂态仿真软件计算了隔离开关进行分闸操作时在试验变压器端部出现的VFTO,分析了影响重燃过电压大小的因素,并研究了利用在试验变压器输出端加装保护间隙时的保护效果。仿真结果表明,分闸时重燃过电压与发生重燃的时间有关,与燃弧时间无关 ...
孟峥峥, 齐效华, 吕亮, 李彦明
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Gaoya dianqi, 2019 特快速暂态过电压（very fast transient overvoltage,VFTO）严重威胁到气体绝缘开关设备（gas insulated substation,GIS）和邻近设备的安全运行,在总结前人研究的基础上,文中提出应用小磁环加装大磁环抑制GIS中的VFTO。依托VFTO发生器和真实500 kV GIS组成的试验平台,分别在充电电压为460、500、540、560 kV情况下开展无磁环、40、80 cm小磁环串和80 cm小磁环串加装10 cm大磁环串的一系列对比试验 ...
高凡夫 +5 more
doaj
Evaluation of the efficacy of transient overvoltages suppression measures in different wind farm topologies using SF6 circuit breaker. [PDF]
Sci Rep, 2023 Eliyan T, Wadie F.
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A Smart Grid Overvoltage Identification System Associated with Partial Discharge Signal and Dielectric Loss Detection. [PDF]
Sensors (Basel), 2023 Chen G +6 more
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The Development of a Low-Cost Fresnel Lens UV Telescope with SiPM Array for Low-Light Atmospheric Transient Detection. [PDF]
Sensors (Basel)Chiritoi G, Popescu EM.
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Research the output characteristic of the 2MV very fast transient overvoltage generator [PDF]
Advances in Computer Science Research, 2015 Shaoquan Zhang +8 more
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Hybrid Forecast-Enabled Adaptive Crowbar Coordination for LVRT Enhancement in DFIG Wind Turbines. [PDF]
Entropy (Basel)Su X, Kim H, Kim C, Zhang M, Jung H.
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Fuzzy-logic-controlled DVR for enhancing the fault resilience of wind energy conversion systems. [PDF]
Sci RepNori AM +5 more
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A Low Cost Real-Time Transient Recorder for High Voltage Systems. [PDF]
Sensors (Basel), 2023 Grebović S +5 more
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