Authors: Yuesheng Zheng Jinliang He Bo Zhang Wei Li Rong Zeng
Publish Date: 2010/01/05
Volume: 30, Issue: 1, Pages: 55-73
Abstract
Numerical simulations are presented for the ion flow effects on the negative direct current corona in air One dimensional equivalent steady corona model containing the continuity equations for electrons and ions on the basis of Townsend theory coupled with Poisson’s equation is applied The conductor radius and the electric field intensity on conductor surface keep constant under the standard atmosphere condition in this paper The results suggest that the space charges within the plasma region have no influence on the electric field distribution throughout the interelectrode gap which is only governed by the ion flow The influences of the gap distance and the corona current on the corona discharge within the plasma region have been investigated If the voltagecurrent characteristics of the negative corona discharge are measured the ion flow region and the plasma region can be investigated individually Based on Kaptzov’s hypothesis the plasma region can be investigated solelyThe authors would like to thank the financial support from State Key Laboratory of Control and Simulation of Power System and Generation Equipment in China Grants No SKLD09M03 National Nature Science Foundation of China Grants No 50777035 and No 50737001 and National Basic Research Program of China 973 Program Grant No 2009CB724504
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