Abstract In order to define the influence mechanism of humidity on the ion flow field of HVDC conductor, the positive ion flow field of HVDC conductor under different humidity was measured by using the coaxial cylindrical electrode in the artificial climate chamber, and the influence of humidity on the ion flow field was analyzed. By introducing the charging parameter, which is used to characterize the charge capacity of suspension droplets, the charge characteristics of suspension droplets and electric field components under different humidity were calculated. The calculation results show that the charge characteristics of the suspension droplets in the ion flow field are different when the relative humidity is less and more than 60%. When the relative humidity is less than 60%, the charge capacity of suspension droplets is poor and almost does not change with the humidity, the space charge is mainly ions and charged droplets have less effect on the ion flow field, the corona discharge characteristics and ion mobility change with humidity are the main factors affecting the ion flow field. When the relative humidity is more than 60%, the charge capacity of suspension droplets increases linearly with the humidity, and the space charge density of the suspension droplets increases rapidly, which becomes one of the main factors affecting the ion flow field.
Shen Nanxuan,Su Zihan,Zhang Yuanhang等. Influence of Humidity on the Charge Characteristics of Suspension Droplets and the Characteristics of Ion Flow Field[J]. Transactions of China Electrotechnical Society, 2022, 37(13): 3422-3430.
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2022, Vol. 37 
