A cylindrical electrostatic fluxmeter for corona studies

The electric field at a high voltage electrode is modified by corona discharge in the space surrounding the electrode. A knowledge of the resultant magnitude of the electric field is of value in the theoretical analysis of the corona. Systems of cylindrical geometry are of particular importance because of applications in electrostatic precipitators and in power loss from overhead transmission lines. The earlier methods of field measurement in corona discharges have not been suitable for measurement of the field strength at the electrode surface, especially in the case of power frequency corona. The paper describes a new technique employing a cylindrical rotating electrostatic fluxmeter. The device is capable of differentiating between conduction and displacement current when used as part of an active corona electrode.