一种基于直角坐标注入电流模型的交直流潮流计算方法  

Algorithm with AC/DC power flow calculation based on rectangular coordinate current-injecting model

作　　者：邓红雷[1] 张莉彬 唐崇旺 刘昭 Deng Honglei;Zhang Libin;Tang Chongwang;Liu Zhao(School of Electric Power,South China University of Technology,Guangzhou 510640,China)

机构地区：[1]华南理工大学电力学院,广州510640

出　　处：《电测与仪表》2020年第24期29-34,共6页Electrical Measurement & Instrumentation

基　　金：国家自然科学基金资助项目(51777079)。

摘　　要：潮流计算是电力系统中各种计算的基础,文中提出了一种基于直角坐标注入电流模型的交直流潮流计算方法。分析了交直流混合系统的数学模型,从直角坐标形式的牛顿法出发,将交直流系统耦合系数矩阵与交流系统雅克比矩阵进行相同的变换,形成注入电流的修正方程,得出了直角坐标电流注入模型的新型耦合系数矩阵的表达式。雅可比矩阵大大简化,不仅改善了收敛性,提高了计算速度和效率,同时程序实现也更加简单,节省了内存容量。Power flow calculation is the basis of all kinds of calculation in power system.This paper presents an AC/DC power flow calculation method based on rectangular coordinate injection current model.Firstly,the mathematical model of AC/DC hybrid system is analyzed.Starting from the Newton method in rectangular coordinate form,the coupling coefficient matrix of AC/DC system and Jacobian matrix of AC system are transformed to form a modified equation of injection current.The new expression of coupling coefficient matrix of current injection model in rectangular coordinate is obtained.Jacobian matrix is greatly simplified,which improves convergence and the calculation speed and efficiency,meanwhile,the program implementation is simpler,thus saving memory capacity.

关 键 词：交直流混合系统 潮流计算 耦合系数矩阵 直角坐标 电流注入模型 

分 类 号：TM933[电气工程—电力电子与电力传动]