Dynamic Characteristics Of Corona Discharges In Point-Plane Electrode Topologies Influenced By Space Charge

Author(s):  
I.V. Timoshkin ◽  
S.J. MacGregor ◽  
M.J. Given ◽  
J. R. Beveridge ◽  
J. M. Lehr

The dissipation of space charge following the growth of impulse corona discharges in positive rod/earthed plane gaps has been measured with an electrostatic fluxmeter. A method is described to determine the spatial distribution and magnitude of the space charge together with the associated electric field. Initial positive ion densities of up to 100 μC m -3 have been found. The total positive space charge deposited in a 40 cm gap at 160 kV is 500 nC. Electrons emitted from the plane electrode as a result of corona channels crossing the gap are shown to be trapped in the discharge space as negative ions. The recovery of the gap over several seconds is largely due to ionic drift to the electrodes. A theoretical derivation of the rate of deionization agrees with observed values.


High Voltage ◽  
2018 ◽  
Vol 3 (2) ◽  
pp. 126-132 ◽  
Author(s):  
Bian XingMing ◽  
Zhu JunYu ◽  
Yang Wei ◽  
Wan ShuWei ◽  
Qi Lei ◽  
...  

1986 ◽  
Vol 106 (4) ◽  
pp. 157-163
Author(s):  
Takashi Ishikawa ◽  
Motoshige Yumoto ◽  
Takao Sakai

Author(s):  
Avinash S Bhangaonkar ◽  
Kalpesh K Dudani ◽  
Shrikrishna V Kulkarni

The phenomenon of corona has been addressed in this paper. The theoretical description of the events occurring during such a discharge has been given. Experiments have been conducted to detect corona using ultra-high frequency (UHF) antennas. The results obtained have been analyzed for their frequency content on the basis of these physical processes. An attempt has been made to understand the effect of space charge on the radiated field.


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