具有可调分接头的变压器模型分析

Analysis on Transformer Model with Adjustable Tap

为寻求分接头调整时简单实用的变压器模型,介绍了两种常见模型在具有可调分接头调整计算中存在计算复杂、影响因素多、使用不便的问题,提出采用基于公共信息模型(CIM)的变压器模型。文中从结构形式、阻抗计算、形成导纳矩阵等方面详细分析了该模型的特点,并与常用变压器模型进行了对比,分析表明该模型能够自动适应变压器分接头的调整,而且参数计算简单,可以大大提高计算效率,非常适合电力系统计算。最后以双绕组有载调压变压器为例,分析了参数的实际计算过程,验证了该模型的简单性、方便性、准确性。

To build a simple and practical transformer model,two kinds of common transformer models that have such disadvantages as computational complexity,multiple influence factors and inconvenient application are analyzed,and the transformer model based on common information model（CIM） is proposed.The characteristics of proposed model is analyzed from such aspects as structure,impedance calculation and formation of admittance matrix,and this model is compared with the common transformer model,from which it is pointed out that the model can automatically adapt to the regulation of transformer tap,and the simplification parameters calculation is simple,which greatly improves the computational efficiency.In the end,the practical calculation process of parameters is analyzed with example of double-windings on-load tap changer,and the accuracy,simplification and convenience of this model are verified.