摘要
基于同时考虑ε(电容系数)、γ(电导率)的复合介质的暂态电场的数学模型,采用含有参数θ的时间离散方法进行暂态电场计算.并以换流变压器阀侧绕组端部和套管引出端为分析对象,研究了直流极性反转电压下绝缘介质电阻率比值及电压反转时间对电场分布的影响.
This paper is based on the mathematic al model of the transient electric fi eld,which involves bothε(permittivity)andγ(conductivity)of the dielectrics.To solve the tran sient electric field,two -point dif ference method with the parameterθis used for the time discretization.The effects of different voltage reversal time in-tervals on the electric field distribution,in the ends of valve -side win dings and the bushing barrier system of converter transformer,are examined under polarity reversal voltage(PR),changing from one steady state to an-other.
出处
《沈阳工业大学学报》
EI
CAS
2001年第6期467-470,共4页
Journal of Shenyang University of Technology
