Results 71 to 80 of about 1,585 (211)
A New Cost Effective Approach to Suppress Very Fast Transients on Power Transformers Connected to Gas Insulated Substations [PDF]
, 2016 This thesis investigates the feasibility of a new method to prevent internal resonance in transformers connected to gas insulated substation due to very fast transient overvoltage in the GIS.
Babaeilaktarashani, Mehdi
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Dianci bileiqi, 2012 目前,由于多种因素,金属氧化物避雷器在抑制特快速暂态过电压（VFTO）方面的应用有限。为了满足VFTO下避雷器的动态特性的需求,笔者介绍一种适用于VFTO计算的避雷器模型,由于避雷器电容效应,造成高频下残压和放电电流之间存在时间延迟,导致避雷器响应速度变慢。结合实例,对采用文中建议的模型和IEEE建议的模型下的VFTO做了仿真分析。结果表明 ...
曲振旭 +4 more
doaj
Cavity reactor critical experiment Progress report, period ending 31 Jul. 1968 [PDF]
Configuration and flux density maps for cavity reactor critical ...
core +1 more source
Gaoya dianqi, 2023 在气体绝缘开关设备（gas insulated switchgear,GIS）中，隔离开关在操作过程中会产生快速暂态过电压（very fast transient overvoltage,VFTO），精确的隔离开关电弧模型对快速暂态过电压的仿真起着关键的作用。文中在分段电弧的基础之上，利用ATP-EMTP软件搭建了隔离开关多次重燃弧模型；为了研究负载端残余电荷对VFTO的影响，文中选取多组不同幅值的残余电压。仿真结果表明：基于分段电弧的多次重燃弧模型产生的VFTO谐波幅值比传统的时变电阻电弧模型要大 ...
张普, 莫付江, 刘欣桐, 王凡
doaj
A comparison of transformer HF models and their application to PQ analysis [PDF]
, 2011 This research work is devoted to the comparison of some proposed high-frequency (HF) models of transformers and their application to power quality (PQ) studies.
Arroyo Gutiérrez, Alberto +4 more
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Self-Calibration Sensor for Contactless Voltage Measurement Based on Dynamic Capacitance. [PDF]
Sensors (Basel), 2023 Suo C +5 more
europepmc +1 more source
Modeling of impulsive propellant reorientation [PDF]
The impulsive propellant reorientation process is modeled using the (Energy Calculations for Liquid Propellants in a Space Environment (ECLIPSE) code. A brief description of the process and the computational model is presented.
Chato, David J. +2 more
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Dianci bileiqi, 2017 近些年来,SF6气体绝缘变电站（GIS）以优异的电气性能在国内外得到了广泛应用,但是运行中隔离开关（DS）的分合闸操作会引起快速暂态过电压（VFTO）,对电力设备绝缘造成严重威胁,已经引起了许多电力系统专家与学者的高度重视。国内外学者针对GIS中VFTO防护的问题,从VFTO的产生和传播过程两个方面进行了大量研究,提出了利用快速动作隔离开关、慢速动作隔离开关、分合闸电阻、铁氧体磁环、金属氧化物避雷器等来抑制VFTO的方法。分析了目前所研究的几种主要防护VFTO方法的研究现状 ...
南保峰 +6 more
doaj
Transmission Line Voltage Measurement Utilizing a Calibrated Suspension Grounding Voltage Sensor. [PDF]
Sensors (Basel), 2023 Huang R +5 more
europepmc +1 more source
Detection of immature rice weevils, Sitophilus oryzae L. (Curculionidae, Coleoptera) by audio amplification [PDF]
, 1954 LD2668 .T4 1954 P47Master of ...
Pesho, George Robert.
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