Corona characteristics of conductor bundles under impulse voltages

Attenuation and deformation characteristics of lightning impulse corona traveling along bundled transmission lines

“…11, there is a little difference in the energy dissipated by corona between conductors with different bundle spacing, specifically the energy presents only minor increase with conductors and another bundle of six conductors). Specifically, the similar conclusion in [10] is obtained that the dynamic capacitance of corona increases with the increase of conductor radius. Similarly, the energy dissipated by the impulse corona increases with the number and radius of subconductors.…”

“…Corona cage experiments were conducted by Maruvada in 1970s to analyze the lightning and switching impulse corona on 4 different kinds of bundled conductors [10]. During recent decades, several other experiments have been carried out to obtain the lightning impulse corona characteristics of conductors in the corona cage or conductors above the ground plane [11][12][13][14].…”

Corona Modelling for the Calculation of Transients on Transmission Lines

“…Experimental results indicate that the q -v characteristic for fast impulses [10] or high frequency a.c. [12] is narrower than for slow ones. This is shown in detail in Fig5.…”

“…We would like to refer, in particular to the set of measurements reported in Ref. [10] After parameter identification the model is complete and can be used for simulation purposes. Fig.6 has served for the validation of the static model.…”

“…Non-uniformities of the corona layer are ignored for the purpose of fully symmetrical representation and the movement of charges is described by the simple assumption of discontinuous friction-like behaviour, corresponding to the idealized assumption of a sudden increase of mobility from zero to infinity above a critical electric field intensity. Thus the model is not a true representation of the physical phenomena, only a substitute which produces external q -v characteristics similar to those available from measurements [10]. But It is assumed that the corona geometry is cylindrical.…”