基于多线圈耦合的变压器数学模型及其应用

发布时间：2017-12-27 09:05

本文关键词：基于多线圈耦合的变压器数学模型及其应用　出处：《中国电机工程学报》2006年21期 　论文类型：期刊论文

【摘要】：在常用的电力系统稳态故障分析软件中,变压器模型通常按绕组接线组别、中性点接地方式分正序、负序和零序分别给出,造成系统零序网络阻抗参数和正负序不同,因而对多重故障和特殊故障的分析变得困难。而对变压器内部故障,人们通常避免分析,以免除极其繁杂的运算。该文构建了一种用节点导纳阵描述的多线圈耦合的变压器数学模型。它无需区别三序网络,能方便地与用序分量描述的其它系统元件接口,有利于实现电力系统稳态故障分析软件的模块化。该模型在提高计算精度的前提下大大减少了变压器外部故障的计算量,对变压器内部故障,文中也提出了基于该模型的近似算法。在需要对电力网络中任意位置的故障进行仿真计算的软件中,该算法由于编程简单、
[Abstract]:In the steady state power system fault analysis software commonly used in transformer winding connection, usually according to the model of neutral grounding mode divided into positive, negative and zero sequence are given respectively, resulting in zero sequence network impedance system parameters and the positive and negative sequence of different, so the analysis for multiple faults and special fault difficult. In the internal fault of the transformer, people usually avoid analysis in order to avoid extremely complex operations. In this paper, a mathematical model of a multi coil coupled transformer described by a node admittance array is constructed. It does not need to distinguish the three order network, it can conveniently interface with other system elements described by sequence components, and is helpful for realizing the modularization of power system steady-state fault analysis software. The model can greatly reduce the amount of calculation of external faults and improve the accuracy of the transformer, and it also proposes an approximate algorithm based on the model. In the software that needs to simulate the fault of any position in the power network, the algorithm is simple because of its programming.
【作者单位】：武汉大学电气工程学院武汉大学电气工程学院武汉大学电气工程学院武汉大学电气工程学院武汉大学电气工程学院
【分类号】：TM403
【正文快照】： 0引言在现有的电力系统分析软件中,对于稳态短路故障的算法,主要是根据故障的位置和性质,分别列出故障后电力系统的正、负、零各序等值电路,再运用各种整合和化简的方法进行分析[1-9]。造成三序网络分列的原因是变压器特殊的元件特性,随接线组别和中性点接线方式不同,它呈现

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