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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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Very fast transient overvoltage analysis for 400KV GIS
8th International Conference on Advances in Power System Control, Operation and Management (APSCOM 2009), 2009The very fast transient overvoltage (VFTO) produced during isolator switching operation in EHV GIS substations could impose a potential risk of insulation breakdown in the equipment connected directly to the GIS. A quantitative assessment of the expected VFTO against the VFTO withstand capability of the concerned EHV equipment is necessary for power ...
H.K. Wong, null Shihe Chen
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Transient overvoltages and distance protections: problems and solutions
10th IET International Conference on Developments in Power System Protection (DPSP 2010). Managing the Change, 2010This paper investigates the relationship between post fault transient overvoltages and the functionality of the numerical distance protection. The study is conducted on a 66 kV network with a neutral earth resistor as method to earth the power system.
L. Torelli, S. Moorthy
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Calculation of Very Fast Transient Overvoltages in GIS
2005 IEEE/PES Transmission & Distribution Conference & Exposition: Asia and Pacific, 2005This paper refers to 500 kV gas insulated substation (GIS) of the Tian Huangping pumped storage power station in East China power system. With the current electro-magnetic transient program (EMTP) in world, we simulate and calculate the very fast transient overvoltages (VFTO) caused by operating of disconnect switch (DS), and the factors that ...
Tiechen Lu, Bo Zhang
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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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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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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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Transient Overvoltages And Its Prevention And Protection
International Journal of Engineering Trends and Technology, 2020Brindha N +3 more
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Analysis of transient overvoltages and Self Protection Overvoltage of PV inverters through RT-CHIL
Electric Power Systems Research, 2023Prottay M. Adhikari +5 more
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