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In this paper, based on COMSOL simulation,a simulation model of corona initiation for angular electrodes with different number of tips (quadrangular, hexagonal, octagonal), tip thickness (0.3 cm, 0.5 cm, 0.8 cm), and angle (10.72°, 16°, 20.72°) is established to investigate the effect of changes in the geometry of angular electrodes. The effect of the change of the angle electrode geometry on the corona onset voltage is investigated. By introducing the concept of equivalent radius, the effect of geometric variations in the number of tips, thickness and angle on the corona onset voltage was quantified. It was found that as the number of tips, tip thickness and angle of the angular electrode decreased, the equivalent radius of the angular electrode gradually decreased and the corona onset voltage gradually decreased; variations in the number, thickness, and angle of the unit tip had differences in the degree of influence on the corona voltage, with rates of 3.279%, 2.846%, and 0.678%, respectively.

Key Factors Affecting the Corona Onset Voltage of Electrostatic Precipitator Electrodes-Xin Cao

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