Results 1 to 10 of about 2,095 (173)

Modelling of Metal Oxide Surge Arresters in Simulation Software DYNAST [PDF]

open access: yes, 2020
This paper describes the possibilities for mathematical modelling of gap-less surge arresters in simulation software DYNAST. This tool does not belong to standard modelling softwares in the field of electric power engineering.
Síťař, Vladislav, Veleba, Jan
core   +2 more sources

Analytical & Experimental Analysis of Lightning Stokes Performance & Protection by MOV Based Simulation Model: A 33 KV Transmission Line Case Study [PDF]

open access: yes, 2021
Researchers are working on techniques to mitigate failure rates as low as possible to avoid potential harm, sustain high power efficiency for this a considerable number of estimation studies were already performed and several designs of methodologies ...
Baig, Faraz Ahmed   +3 more
core   +2 more sources

Study of a Combined Surge Protective Device for a Relay Protection Circuit in a UHV Converter Station

open access: yesIEEE Access, 2020
This article focuses on the problem that the voltage recovery time of relay protection circuits in converter stations is too long under lightning surges.
Yuqi Zhang, Weidong Zhang, Jianfei Ji
doaj   +1 more source

Reduction Reactive Power and Collapse Voltage Using Series Capacitors Compensation in Sudden Change Loads of Transmission Lines [PDF]

open access: yesEngineering and Technology Journal, 2012
The continuous increase of disturbances on the interconnected electric power system resulting in its inability to reliably meet demands. This paper presents an application of a series capacitor compensation in transmission line and shunt reactors ...
Hussein Thani Rishag
doaj   +1 more source

An intelligent protection scheme for series-compensated transmission lines connecting large-scale wind farms

open access: yesFrontiers in Energy Research, 2023
Series-compensated transmission lines (SCTLs) are increasingly preferred for transmitting bulk amounts of electricity generated from the present-day large-scale wind farm to the utility grid due to several technical and economic benefits. However, when a
M. S. Prabhu   +4 more
doaj   +1 more source

直流开断中MOV均衡特性选配方法研究

open access: yesGaoya dianqi, 2023
金属氧化物压敏电阻(metal oxide varistor,MOV)广泛应用于各种直流断路器中,用于抑制过电压、系统能量耗散与开断电压建立。受目前加工工艺限制,单MOV阀片通流能力有限,故断路器中多采用多柱并联结构。柱间电流分配不均会导致局部阀片超负荷耗能,造成开断失败甚至设备损坏。文中基于实验测量建立了一种直流开断工况下的MOV电气模型,基于该模型提出了MOV阀片均流选配方法。经实验验证,传统基于雷电冲击测试方法选配的MOV在直流开断工况的均流特性不能完全满足要求 ...
龙辰   +7 more
doaj  

Investigation on the Performance of Metal Oxide Varistors in Energy meter [PDF]

open access: yes, 2015
An Energy meter includes current and voltage input, a surge protection section, a measurement device. The measurement device will generate power consumption measurements based on current input and voltage input.
, Srinath kv, Dr. Andhe Pallavi
core   +2 more sources

Lightning protection for power transformers of Aqaba Thermal Power Station

open access: yesArchives of Electrical Engineering, 2020
In this paper, a study of the lightning phenomenon and its harmful effect on Aqaba Thermal Power Station (ATPS), located in the south-western border of Jordan, is presented using the Electromagnetic Transients Program – Alternative Transients Program ...
Wael Fawzi Abu Shehab   +2 more
doaj   +1 more source

Two basic ways to realise DC circuit breakers

open access: yesThe Journal of Engineering, 2019
As a key element of the DC grid, the technology of DC circuit breakers (DCCBs) still have difficulty to be widely used due to its large cost and volume. This paper studies the basic principle and its realisation methods for DCCBs.
Zheng Xu   +3 more
doaj   +1 more source

Flexural performance of textile fine grained mortar containing risk husk ash as a partial cement replacement in reinforced concrete beams [PDF]

open access: yes, 2018
External strengthening of RC beam become a popular method to reduce deterioration. Due to highest demanding on external strengthening, a new innovation was introduced called as textile fine grained mortar (TFGM).
Mohammad, Noor Shuhada
core  

Home - About - Disclaimer - Privacy