摘要
介绍含铁磁元件电力网络的合闸暂态过电压的模拟计算方法,其中铁磁元件的非线性特性励磁曲线采用逐点线性化方式加以处理。首先给出了变压器的等值电路模型,再以该模型为基础,运用国际上流行的电磁暂态计算软件ATP分别对计及与不计变压器励磁支路的系统网络进行了合闸暂态模拟,对比模拟结果表明:非线性励磁曲线的考虑能在一定程度上对合闸过电压产生影响。
A simulation method is proposed in this paper for transient calculation of the power networks containing ferromagnetic elements. In the method, the nonlinear magnetizing curve of power transformer is represented by the procedure of point by point piecewise. The energized transients are simulated with ATP, form which the transient overvoltages are obtained. The influence of magnetizing curve on the overvoltages is investigated by comparison of the simulated results including the magnetizing curves with those excluding the magnetizing curves.
出处
《电力学报》
2005年第3期235-236,239,共3页
Journal of Electric Power
关键词
铁磁元件
励磁曲线
过电压
ferromagnetic element
magnetizing curve
over-voltage
作者简介
张瑛（1978-）,女,陕西西安人,在读硕士研究生,电力系统电磁暂态研究;
张小青（1957-）,男,安徽合肥人,教授,电力系统电磁暂态研究.
