三序节点导纳矩阵在工程中的程序实现

Program Implementation of Three Sequence Node Admittance Matrix in Project

节点导纳矩阵作为电力系统分析计算中广泛采用的一种数学模型,是电力系统分析计算的基础,其计算的正确与否有着重要的意义。文中详细分析了在实际工程应用中遇到的三序网络节点和支路编号、YN/d接线方式的变压器在零序导纳矩阵计算中的处理及多回线路的处理三个问题,并对节点导纳矩阵的程序实现方法进行了改进。经过验证,该程序能正确计算电网模型的三序节点导纳矩阵,并已成功应用于多个实际工程。

Node admittance matrix is a mathematical model which is widely used in power system analysis and calculation,and is the base of power system analysis and calculation,the correct calculation of admittance matrix has very important significance.The paper analyzes in detail the questions such as node and branch numbering of three sequence network,YN/d transformer connection＇s calculation in zero sequence admittance,multi-lines processing,and the program is improved.The result shows that the program can calculate node admittance matrix of power system correctly and is applied to actual project successfully.