Electric Field and Current Density in the Impulse Corona Discharge in a Rod/Plane Gap

摘要: Measurements have been made of corona discharges in positive rod/earthed plane systems subjected to impulse voltages up 200 kV. For this an electrostatic fluxmeter for the examination electric fields and charge densities present has developed used. current so obtained during discharge are compared with conventional measurements total densities. These show that transient at centre is a double pulse time separation 0.1 1.0 μ s. The first shown by be due induced on surface second electron emission from surface. At electrode space field can as great 8 kV/cm, conduction density 45 A/m 2 . duration decaying space-charge several seconds. construction, calibration synchronization fluxmeter, which measure down 10 V/cm resolution 0.5 ms, described. principles device separating displacement com­ponents process discussed.