Results 151 to 160 of about 453,863 (195)

Secondary arc of LEO spacecraft solar array

2017 4th International Conference on Electric Power Equipment - Switching Technology (ICEPE-ST), 2017
High voltage solar array (HVSA) and extreme high voltage solar array (EHVSA) are important demands for spacecraft in the future. The electrostatic discharge will be caused by the interactions between the high voltage solar array and the plasma in the space environment in LEO.
Zhu Liying, Liu Zhigang, Zhang Xiaofeng, Wu Jianwen, Huo Wenlei   +4 more
openaire   +1 more source

Field Verification of Secondary Arc Extinction Logic

IEEE Transactions on Power Delivery, 2016
Single-phase trip and high-speed reclose (SPTR) schemes applied on extra-high-voltage (EHV) lines offer significant benefits over three-phase schemes as they help maintain synchronism and stability in sparse transmission networks. However, a secondary arc may persist and prevent timely recovery of the air insulation.
Mukesh Nagpal, Ska-Hiish Manuel, Bryan E. Bell, Ralph P. Barone, Charles Henville, Devinder Ghangass   +5 more
openaire   +1 more source

Long arcs in free air: Stationary parameters for secondary arc current range

2014 Power Systems Computation Conference, 2014
The major part of disturbs in electrical systems occurs in transmission lines. These disturbs are in most cases single-phase and transitory and mainly caused by atmospheric electrical discharges. In this paper, the voltage-current cross relation characteristic of the secondary arc was investigated using open air experimental data.
Athos Garcia, Maria Cristina Tavares
openaire   +1 more source

Electrostatic Discharge and Secondary Arcing on Solar Array—Flashover Effect on Arc Occurrence

IEEE Transactions on Plasma Science, 2008
A good representativeness of the test setup used for the qualification of solar arrays is fundamental. We know now that the flashover current involved in the electrostatic discharge is related with the total dielectric surface neutralized during the electrostatic discharge.
V. Inguimbert, D. Sarrail, J.-C. Mateo-Velez, R. Reulet, L. Levy, F. Boulay, D. Payan   +6 more
openaire   +1 more source

Secondary Arc Current of UHVAC System

2017
Compared with EHV lines, the UHV transmission lines have high voltage, long transmission line, large phase-to-phase capacitance, and mutual inductance values, which make it to have larger secondary arc current and higher recovery voltage, requiring measures to be taken to control the secondary arc current and recovery voltage, or the success rate of ...
Qiang Yi, Hao Zhou, Sha Li
openaire   +1 more source

Secondary arc extinction and detection real and simulated

IET 9th International Conference on Developments in Power Systems Protection (DPSP 2008), 2008
Removal of a single line to ground fault by isolating only the faulted phase frequently leads to the creation of a secondary fault arc. Auto reclose protection schemes depend upon the absence of a secondary arc prior to reclosing. Consequently, there is great benefit from a technology to determine secondary arc extinction detection. The testing of SAED
J. Giesbrecht, D.S. Ouellette, C.F. Henville   +2 more
openaire   +1 more source

Mitigation of Secondary Arcing in Spacecraft Electronic Equipment

IEEE Transactions on Aerospace and Electronic Systems, 2019
Here we present experimental data that demonstrate the possibility to detect defects in protective dielectrics covering printed circuit boards (PCBs) and to prevent secondary arcing after primary arc events. The detection of defects in a PCB is based on its plasma scanning and measurements of plasma-to-PCB electron currents through defects, allowing ...
Alexander V. Batrakov, Sergey B. Suntsov, Sergey A. Popov, Anton V. Schneider, Elena L. Dubrovskaya, Alexander V. Seloustev, Alexander A. Hvalko   +6 more
openaire   +1 more source

A Probabilistic Approach for Secondary Arc Risk Assessment

IEEE Transactions on Power Delivery, 2004
A probabilistic methodology for secondary arc extinction time calculations is presented. The proposed approach permits the calculation of the probability of secondary arc extinction as a function of time and represents an extension of the well-known deterministic model proposed in , where the extinction time is obtained from EMTP-type simulations and ...
J.H.N. Nava, R.A. Rivas, A.J. Urdaneta
openaire   +1 more source

Secondary Arc Formation Within a Distributed Energy Railgun

IEEE Transactions on Plasma Science, 2008
Experimental results comparing a breech-fed scheme and two distributed energy schemes for a free-running arc are presented. Analysis and observations of the issues associated with distributed energy switching of a plasma arc in the railgun are explored.
R.W. Karhi, J.J. Mankowski, J.C. Dickens, M. Kristiansen, D.A. Wetz   +4 more
openaire   +1 more source

Research on Secondary Arc for UHV Transmission Lines

2009 Asia-Pacific Power and Energy Engineering Conference, 2009
A dynamic mathematical model-Johns arc model which could be used to simulate the dynamic secondary arc in the process of single-phase auto-reclosure after transient single-phase faults is presented and actualized in PSCAD/EMTDC. This model is used in the digital faults simulations of the first ultra high voltage (UHV) transmission line of 1000 KV class
Song Xiang, Jun Wen, Hui-Yuan Zhang, Xiang-Ning Xiao   +3 more
openaire   +1 more source