In aerospace applications, low pressure, corona discharges occurs at lower voltage level than on the ground. What would be the long term effect of corona on the insulation, conductors ?
Can this facilitate the breakdown or modify the creepage distance and create a treeing effect ?
Dear colleague,
It is known that DC corona discharge at lower air pressures should have higher critical intensity. So I think that negative impact of corona on insulation (aging) will diminish for lower air pressures.
It is assumed that DC corona does not create electrical treeing. But perhaps this does not exclude the possibility of water treeing.
Would reduced the voltage surge, and would increased the insulation detoriation(ageing)...
The important aspects are power losses and electromagnetic interferences caused by corona. Both problems are described in numerous publications.
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