Results 21 to 30 of about 31,489 (151)

Development of diagnostic and prognostic algorithms for SF6 puffer circuit breakers from transient waveforms: a validation proposal [PDF]

, 2009
- This paper presents a validation proposal for development of diagnostic and prognostic algorithms for SF6 puffer circuit-breakers reproduced from actual site waveforms.
Kam, Shui-cheong, Ledwich, Gerard
core   +1 more source

Investigation of TIG-welding plasma and the electrode contamination [PDF]

, 2006
TIG welding experiments have been used for the welded joints of the austenitic stainless steel and molybdenum. The aim of the experiments was to find the optimal welding parameters.
Bernáth, Andrea, Dobránszky, János, Szabolcs, Bella   +2 more
core  

Rapid analysis & design methodologies of High-Frequency LCLC Resonant Inverter as Electrodeless Fluorescent Lamp Ballast [PDF]

, 2007
The papers presents methodologies for the analysis of 4th-order LCLC resonant power converters operating at 2.63 MHz as fluorescent lamp ballasts, where high frequency operation facilitates capacitive discharge into the tube, with near resonance ...
Ang, Y A, Bingham, Chris, Foster, M, Stone, D A   +3 more
core   +1 more source

Study on Lightning-Induced Plasma Extinguishing in 10 kV Distribution Network Lines Based on Electronegative Gas Trifluoroiodomethane

Plasma
Plasma arcs generated by lightning strikes are prone to tripping distribution lines, especially 10 kV lines. To reduce the lightning-induced tripping rate of 10 kV distribution lines and ensure the safe operation of power systems, this paper proposes a ...
Ping Huang, Zhipeng Wu, Li Tian, Biao Zhang, Yuang Long, Zhenyu Liu, Yiyi Zhang   +6 more
doaj   +1 more source

Quasi-single phase permanent fault identification method and reclosing strategy based on multi-level confidence rules

International Journal of Electrical Power & Energy Systems
As global temperatures rise, the frequency of lightning increases, making lightning one of the principal threats to power-system security. Field incidents indicate that, within the automatic reclosing time window, multiple-stroke lightning can exhibit ...
Hongchun Shu, Baisong Liu, Weijie Lou, Yutao Tang, Haoming Liu, Yiming Han, Yue Dai, Ying Cao   +7 more
doaj   +1 more source

High-frequency transient suppression in the distribution network: analysis and performance enhancement of an intelligent switch protection on-column

Journal of King Saud University: Engineering Sciences
Adjacent feeder column switches in electrical distribution systems may malfunction or refuse to operate during fault line isolation due to the rapid propagation of fault current.
Haider M. Umran, Samir M. Umran
doaj   +1 more source

The Recognition of Fires Originating from Photovoltaic (PV) Solar Systems [PDF]

, 2015
There has been an observable increase in the fitting of photovoltaic (PV) solar panels on the roofs of buildings in the UK over the last decade. The origin of some fires in domestic and commercial properties has been attributed to PV systems.
Prometheus Forensic Services Limited, Smith, Simon Peter   +1 more
core  

A Dual Enhancement Switching Technology for Vacuum Circuit Breakers in Various AC-Based Operational Environments

IEEE Access
Vacuum circuit breakers (VCBs) have gained the attention of the medium voltage community for their involvement in various applications. However, the problem of arc-reignition is still under investigation with R-C snubber circuits considered as the most ...
Tamer Eliyan, Saad F. Al-Gahtani, Z. M. S. Elbarbary, Fady Wadie   +3 more
doaj   +1 more source

Study of arc and magnetic field parameters under delayed breaking condition of DB-DC VCB

AIP Advances
Taking the mechanical double-break DC vacuum circuit breaker (DB DC VCB) as the research object, the magnetic field and temperature field distribution between the breaks and the plasma characteristics under the working condition of gap difference caused ...
Chongyang Huang, Shurui Yang, Zengyu Shan, Zhengbo Li, Yundong Cao   +4 more
doaj   +1 more source

Safe-arm initiator Patent [PDF]

, 1970
Electroexplosive safe-arm initiator using electric driven electromagnetic coils and magnets to align ...
Parker, L. C.
core   +1 more source