Results 91 to 100 of about 2,108,671 (167)

Overvoltage protection network [PDF]

, 1974
Electrical equipment to be protected from overvoltage is connected with a possible source of overvoltage via an input conductor. A fuse is connected in series with the input conductor.
Cambra, J. M.
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RISK EVALUATION IN LIGHTNING AND OVERVOLTAGE PROTECTION [PDF]

, 2000
With the development of electronics several tendencies whose joint emergence redoubles the significance of damages to electronic parts is visible simultaneously today.
Tatár, Dénes
core   +1 more source

Design of Fault Protection Stra for Unified Power Flow Controller in Distribution Networks

Energies
The capacity of traditional distribution networks is limited. After large-scale distributed power sources are connected, it is difficult to consume them at the same voltage level, which can lead to transformer reverse overloading and voltage limit ...
Xiaochun Mou, Ruijun Zhu, Xuejun Zhang, Wu Chen, Jilong Song, Xinran Huo, Kai Wang   +6 more
doaj   +1 more source

Overvoltage protection for low voltage equipment

, 2013
Předkládaná diplomová práce je zaměřena na přepěťové ochrany nízkého napětí s použitím při ochraně budov, instalací, fotovoltaických elektráren, datových i anténních zařízeních v oblasti nízkého napětí.
Živný, Jiří
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Necessity of overvoltage protection studies for gas-insulated switchgear [PDF]

, 2017
Kaasueristeisten kytkinlaitosten määrä kantaverkossa lisääntyy tulevaisuudessa merkittävästi erityisesti korvausrakentamisen myötä. Kaasueristeinen kojeisto on herkkä ylijännitteille ja aiheuttaa vikaantuessaan pitkän keskeytyksen sähkönsiirtoon sekä ...
Tammi, Veli Juhani
core   +1 more source

Overvoltage protection of large power transformers:a real life study case [PDF]

, 2006
This paper demonstrates the results from a detailed study of the overvoltage protection of a particular 400/150 kV 400 MVA power transformer. The work presented here is based on real-life power system substation design and data and initiated by Danish ...
Bak, Claus Leth, Wiechowski, Wojciech Tomasz, Andresson, Einar, Lykkegaard, Jan, Einarsdottir, Kristin, Rasmussen, Jesper M.   +5 more
core   +2 more sources

Impact of Adding Fast Switching Fault Current Limiter (FSFCL) to the Neutral Point of 220 kV Transformer

Energies
In recent years, as the power grid continues to expand, the issue of asymmetrical short-circuit currents exceeding limits on the 220 kV medium-voltage side has become increasingly severe, and traditional current-limiting methods have certain limitations.
Lujian Dai, Jun Zhao, Meng Guo, Shuguo Gao, Chenmeng Xiang, Bin Wei, Weiqi Qin, Guoming Ma, Yuan Tian   +8 more
doaj   +1 more source

Long-term field measurement and characteristics of lightning-induced overvoltages on 10 kV distribution lines in high-altitude mountainous areas and optimization of insulation coordination

Results in Engineering
Aiming at the lack of measured data on lightning overvoltages in operational distribution networks and the irrationality of insulation coordination based on standard lightning impulse waveforms, this paper carries out large-scale and long-term ...
Li Shao, Ke Wang, Zhisong Xu, Hao Yang, Ran Huang, Bao Zhao, Hengxin He   +6 more
doaj   +1 more source

A CASE STUDY OF OVERVOLTAGE PROTECTION OF A MICROWAVE REPEATER STATION

, 2003
Ever since inception, the electric power and communication systems are exposed to dangerous overvoltage surges starting from lightning to service frequency temporary overvoltage waves with disastrous consequences.
Valsalal, P., Udayakumar, K.
core   +1 more source

Power plant lightning overvoltage protection of low voltage power electronics [PDF]

, 2018
The effects of direct lightning strike and flashover strike to 400kV system of nuclear power plant were inspected for perspective of low voltage power electronic devices. Protection methods were simulated with PSCAD transient simulator.
Pasonen, Riku
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