Measurement of positive direct current corona pulse in coaxial wire-cylinder gap
- Department of Electrical Engineering, Tsinghua University, Beijing 100084 (China)
In this paper, a system is designed and developed to measure the positive corona current in coaxial wire-cylinder gaps. The characteristic parameters of corona current pulses, such as the amplitude, rise time, half-wave time, and repetition frequency, are statistically analyzed and a new set of empirical formulas are derived by numerical fitting. The influence of space charges on corona currents is tested by using three corona cages with different radii. A numerical method is used to solve a simplified ion-flow model to explain the influence of space charges. Based on the statistical results, a stochastic model is developed to simulate the corona pulse trains. And this model is verified by comparing the simulated frequency-domain responses with the measured ones.
- OSTI ID:
- 22251882
- Journal Information:
- Physics of Plasmas, Vol. 21, Issue 3; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
Similar Records
Multicomponent kinetic model of negative and positive short-space corona in air
Current-voltage characteristics of dc corona discharges in air between coaxial cylinders