Results 131 to 140 of about 329 (178)
Temporary overvoltage capability of surge arresters for 1000 kV power systems
Electrical Engineering in Japan (English Translation of Denki Gakkai Ronbunshi), 1996 AbstractInsulation level (LIWV 2250 kV) of 1000 kV gas insulated switchgear will be adopted by installing high performance 1000 kV surge arresters. But when temporary overvoltage (TOV) is generated in power systems at line faults and load rejection including Ferranti effects, high performance surge arresters flow discharge current according to the ...
Shingo Shirakawa
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Study of different techniques to mitigate temporary overvoltage in photovoltaic system
Materials Today: Proceedings, 2022Abstract This paper investigates the cause of temporary overvoltage in PV system and different ways to mitigate them. Temporary overvoltage is an undesired phenomenon in distributed generation system which needs to be eliminated using different transformer configuration and grounding banks.
Manam Ravindra
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A study of temporary overvoltage at HVDC rectifier stations
2011 IEEE Electrical Power and Energy Conference, 2011 This paper presents a study of Temporary Overvoltage (TOV) on the Manitoba Hydro rectifier system under the proposed development of a new HVDC link and generations. The TOV assessment is based on a full load rejection of three Bipoles, which should result in the highest temporary fundamental frequency overvoltage.
Chenghong Zhou, Pei Wang
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Temporary Overvoltage (TOV) Test Values for SPDs in Japan
2018 34th International Conference on Lightning Protection (ICLP), 2018 In IEC 61643-11:2011 [1], the temporary overvoltage (TOV) test method and test values to confirm the safety of the SPD in TOV are specified. However, this TOV test values is based on the three phase 4 wire Y connection 230/400V system defined by the IEC 60364series, which are different from the actual situation in Japan.TOV caused by faults in low ...
Kensuke Kaito +2 more
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Temporary Overvoltage and GPR Characteristics of Distribution Feeders With Multigrounded Neutral
IEEE Transactions on Power Delivery, 2010Three-phase four-wire multigrounded neutral (MGN) is the preferred distribution line configuration in North America. Its performance characteristics, such as temporary overvoltage (voltage swell) and ground potential rise (GPR), are difficult to understand and assess due to the presence of a neutral conductor and the conductor's multiple grounding ...
Yunfei Wang, Wilsun Xu
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Investigation and mitigation of temporary overvoltage caused by harmonic filters in an oil refinery
2021 Southern African Universities Power Engineering Conference/Robotics and Mechatronics/Pattern Recognition Association of South Africa (SAUPEC/RobMech/PRASA), 2021 Harmonic distortion caused by non-linear loads pose a threat to power quality that may result in failures or damage to various components of the electrical system. In this work the harmonic distortion in an oil refinery is investigated using the ATP/EMTP software. Harmonic filters are used to reduce harmonic distortion by diverting harmonic currents in
Prenushka Ayar +2 more
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CCECE 2010, 2010 This paper presents a comprehensive analysis of the impact of Distributed Generator Interface Transformer (DGIT) configuration on Temporary Over Voltage (TOV) on the healthy phases in a distribution feeder during an unsymmetrical fault. Three common types of transformer configurations are investigated both analytically and using EMTDC/PSCAD ...
Pouyan Saifi +3 more
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Sustainability, 2021 In general, a temporary overvoltage (TOV) on the healthy phases occurs because of the neutral-shift phenomenon during a single line-to-ground (SLG) fault.
Namhun Cho +2 more
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Temporary Overvoltage Mechanism Analysis of Renewable Energy
2024 IEEE 2nd International Conference on Power Science and Technology (ICPST)Shiyun Xu
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