摘要
为了准确地评估变压器产品的绝缘可靠性,借助于边界元计算方法,提出了变压器绝缘结构可靠性评价的全域电力线扫描法.给出了采用边界元法沿电力线平均电场强度求解和电力线绘制的一种计算方法,分析了该方法在不同步长取值时的求解误差、平均电场强度和电力线长度求解时的变化规律.应用该方法可以在求解区域全范围内确保变压器绝缘结构具有足够的安全裕度,通过实际变压器产品设计和制造的检验,证明了所提出的分析方法的正确性.
In order to evaluate the reliability of transformer insulation,the whole-region power-line scanning method was proposed based on the principle of boundary element method(BEM).A method for calculating the average electric field intensity and ploting the power line with BEM was given.The computation error as well as the variation rule in calculating the average electric field intensity and power line length at different steps were analyzed.With the proposed method,the safety margin of the transformer insulati...
出处
《沈阳工业大学学报》
EI
CAS
2010年第6期611-614,共4页
Journal of Shenyang University of Technology
基金
“十一五”国家科技支撑计划项目(2006BAA02A13)
关键词
变压器
绝缘
可靠性
边界元
电场
全域
电力线扫描法
transformer
insulation
reliability
boundary element
electric field
whole-region
power-line scanning method
