Corona Charge Injection Prior to Sparkover in an Inversed Rod-Plane Gap Under Composite Voltages

Electrical breakdown in air in a point-plane topology involves complex processes that are still not fully understood. Unlike uniform-field topologies, the highly-divergent fields produced by point-plane topologies create pre-breakdown corona with volumetric space charge. It is known that space charges developed by corona discharge have significant impacts on the breakdown voltage in non-uniform electrode topologies. With large inter-electrode gaps (>cm) the breakdown voltage for a HV point cathode in air at atmospheric pressure is noticeably larger than a HV point anode. However, this paper shows that in shorter point-plane gaps in air (less than 10 mm), in the air pressure range 0.1-0.35 MPa, an HV point anode has a similar breakdown voltage which eventually is surpassed by the HV point cathode as the inter-electrode gap is increased. The inter-electrode gap at which the HV cathode has a higher hold-off voltage is found to be dependent on the gas pressure and radius of the point electrode.Index Terms -Electrical breakdown, Corona discharge, Air-filled plasma-closing switch, Point-plane electrode topology.

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Corona Charge Injection Prior to Sparkover in an Inversed Rod-Plane Gap Under Composite Voltages

Cited by 5 publications

References 14 publications

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Corona Charge Injection Prior to Sparkover in an Inversed Rod-Plane Gap Under Composite Voltages

Cited by 5 publications

References 14 publications

An effective Lightning Flash Algorithm solution to large scale non-convex economic dispatch with valve-point and multiple fuel options on generation units

An effective Lightning Flash Algorithm solution to large scale non-convex economic dispatch with valve-point and multiple fuel options on generation units

Platform Phenomenon of Insulation Characteristics of SF6under AC Superimposed Impulse Voltage

Polarity effects on breakdown of short gaps in a point-plane topology in air

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Platform Phenomenon of Insulation Characteristics of SF₆under AC Superimposed Impulse Voltage