Measurement of positive direct current corona pulse in coaxial wire-cylinder gap

被引：33
|
作者：
Yin, Han [1 ]
Zhang, Bo [1 ]
He, Jinliang [1 ]
Wang, Wenzhuo [1 ]
机构：
[1] Tsinghua Univ, Dept Elect Engn, Beijing 100084, Peoples R China
来源：
PHYSICS OF PLASMAS | 2014年 / 21卷 / 03期
基金：
中国国家自然科学基金;
关键词：
BIPOLAR HVDC TRANSMISSION; ION-FLOW FIELD; ELECTRIC-FIELD; FINITE; PERFORMANCE; LINES;
D O I：
10.1063/1.4868966
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
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. (C) 2014 AIP Publishing LLC.
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页数：8
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