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Overvoltage transient protection network design
Proceedings of the International Conference on Electromagnetic Interference and Compatibility, 1999Transient over-voltages caused by lightning, couples on to data communication or instrumentation signal lines and introduce serious fault alarm conditions and damage instrumentation electronics. Protection circuits to minimise the transient over-voltage are commercially available for variety of installation requirements.
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Suppression of Transient Overvoltages on Instrumentation Wiring Systems
IEEE Transactions on Industry Applications, 1985Modern electronic analog instrumentation equipment is vulnerable to damage by transient overvoltages appearing on signal and power supply wiring. Experience with overvoltages and relatively simple techniques to avoid damage are discussed.
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Transient overvoltage in distribution networks in rural areas
2016 33rd International Conference on Lightning Protection (ICLP), 2016A surge sensitivity study of distribution transformers in rural areas of Cundinamarca — Colombia was performed. The analysis took into account the grounding resistance magnitude and the transient overvoltage injection point. Lightning overvoltages are introduced in the IEEE 13 bus system test feeder by using the EMTP-ATP program, results show that ...
Luis Eduardo Perdomo Orjuela +2 more
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Equations for some transient overvoltage test waveforms
IEEE Transactions on Electromagnetic Compatibility, 1988Simple equations are provided that satisfy the definitions of five of the most common transient overvoltage test waveforms: the ringwave specified in ANSI C62.41-1980, the fast transient specified in IEC 801, and the 8/20- mu s 1.2/50- mu s, and 10/1000- mu s waveforms.
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Effects of very fast transient overvoltages on transformer
IEE Proceedings - Generation, Transmission and Distribution, 1999An analytical solution is found using the Laplace transform to describe the very fast transient overvoltage (VFTO) in the gas insulated switchgear (GIS) connected directly to a transformer. The oscillation frequencies, and other properties, are explicitly given in terms of system parameters. The magnitude of VFTO at the transformer is suppressed due to
Y. Shibuya, S. Fujita, T. Shimomura
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Modeling of transient overvoltages in wind power plants
2014 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC), 2014Compared with conventional power plants, wind power plants (WPP) have their own characteristic, which are more vulnerable to transient overvoltages. Transient overvoltages may contribute to insulation failures of step-up transformers. In WPPs, the transient overvoltage is mainly caused by switching operations of vacuum circuit breakers.
B. Liu, W. H. Tang, X.D. Chen, Q. H. Wu
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Transient Overvoltages And Its Prevention And Protection
International Journal of Engineering Trends and Technology, 2020Arun kumar V +3 more
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Very Fast Transient Overvoltage of UHVAC System
2017Compared with 500 kV EHV GIS substation, 1000 kV UHV GIS/HGIS substation has different characteristics in terms of switchgear, system structure, insulation margin, requirements on safety and stability and importance. And the hazardness of very fast transient overvoltage (VFTO) on UHV GIS is much heavier than that in 500 kV power system.
Yang Li, Guoming Ma, Hao Zhou
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Influence of operation mode on HGIS fast transient overvoltage and enclosure overvoltage
4th International Conference on Information Science, Electrical, and Automation Engineering (ISEAE 2022), 2022Peng Lu +5 more
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Behavior of synchronous machines subjected to transient overvoltages
10th International Conference on Harmonics and Quality of Power. Proceedings (Cat. No.02EX630), 2004Voltage transients play an important part in the area of power quality. Transient overvoltages cause machine tripping due to breaking by overvoltage protection, which may lead to production losses. Apart from that, large torque peaks that may cause damage to the shaft or equipment connected to the shaft. High current peaks occur as well, which leads to
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