Numerical Modelling of Ice-Covered Insulator Flashover: The Influence of Arc Velocity and Arc Propagation Criteria [PDF]
Energies, 2018 This paper investigates the influence of arc velocity and propagation criteria on the parameters of a dynamic numerical mono-arc model used to predict flashover voltage of ice-covered insulators.
Issouf Fofana
exaly +7 more sources
Influence of Arc Size on the Ignition and Flame Propagation of Cable Fire
Energies, 2021 Cable fire caused by arc faults is one of the essential factors threatening the safe operation of a power system. The ignition and flame propagation of cable fire dependent on the characteristics of the arc discharge is lackingin in-depth understanding ...
Shuqun Wu, Zhenyu Zhu
exaly +3 more sources
Arc Plasma Propagation and Arc Current Profiles [PDF]
IEEE Transactions on Plasma Science, 2019 When electrical arcs occur in space, a plasma expands away from the arc-site, neutralizing adjacent surfaces (a current), and causing a current to be produced at the arc-site (source of neutralization current). The speed of this plasma expansion depends on the plasma species, which in turn depend on the ionizable materials near the initial ...
Ryan C Hoffmann +2 more
exaly +2 more sources
Flashover prediction of polluted composite insulators based on arc time constant and velocity using CNN–LSTM [PDF]
Scientific ReportsIn this paper, a unified arc model is proposed to bridge the gap between analytical arc models and flashover dynamics in real practice. This approach synergizes the arc time constant ( $${\tau}_{arc}$$ ) and arc velocity ( $${v}_{arc}$$ ) under pollution
Navid Fahimi, Hamid Reza Sezavar
doaj +2 more sources
Slab thermal transitions in the Aeolian arc driven by sub-slab mantle upwelling in the early Pleistocene [PDF]
Nature CommunicationsSlab tearing and associated asthenospheric upwelling can profoundly affect arc magmatism by heating subducting slabs, yet continuous temporal magmatic records for such slab thermal perturbations remain elusive.
Yuxiang Zhang +3 more
doaj +2 more sources
Dry band formation mechanism of composite insulator with generalized finite difference-time domain
电力工程技术, 2022 The pollution flashover of composite insulators is mainly the flashover caused by alternate occurrence of arc development and dry band formation. At present, researchers have investigated the development of insulator arc along the surface.
HE Jiahong, DONG Bowen, HE Kang
doaj +1 more source
Prediction of Arc Voltage of Electric Arc Furnace Based on Improved Back Propagation Neural Network [PDF]
SN Computer Science, 2021 The Production of the quality steel is achieved by melting iron and steel scraps by utilizing electric power in an electric arc furnace, it acts as one of the major troublesome load in the electric power system due to high nonlinear and chaotic nature, thereby creating severe power quality disturbances to the interconnected network, therefor the need ...
K. U. Vinayaka, P. S. Puttaswamy
openaire +1 more source
Modelling Surface Electric Discharge Propagation on Polluted Insulators under AC Voltage
Energies, 2021 In this contribution, a mathematical model allowing for the prediction of the AC surface arc propagation on polluted insulators under non-uniform electric field is proposed. The approach is based on the experimental concept of Claverie and Porcheron. The
Mohamed Lamine Amrani +6 more
doaj +1 more source
A Two-way Propagation Strategy for Maintaining Constraint Network Consistency [PDF]
Jisuanji gongcheng, 2020 The constraint satisfiability problem is a classic NP-hard problem,its basic algorithms are recursive backtracking and arc consistency algorithms.The combination of Arc Consistency(AC) and backtracking search can effectively reduce the size of solution ...
LI Xiao, SI Huaiwei, GUO Zongyi, LI Dongyu, TAN Guozhen
doaj +1 more source
IEEE Access, 2020 This paper proposes an arc propagation model based on electric and thermal field coupling to investigate the arc propagation mechanism around composite insulators.
Jiahong He, Chaopeng Zhang, Kang He
doaj +1 more source