改进电流注入型牛顿法潮流计算方法研究  

Research on Improved Current Injection Newton Method for Power Flow Calculation

作　　者：吴发旺 徐睿 曹博源 WU Fawang;XU Rui;CAO Boyuan(Shibei Power Supply Branch,State Grid Chongqing Electric Power Company,Chongqing 401147,China;School of Engineering Management,Nanjing University,Nanjing 210009,Jiangsu Province,China;State Grid Electric Power Research Institute,SMEPC,Shanghai 200437,China)

机构地区：[1]国网重庆市电力公司市北供电分公司,重庆401147 [2]南京大学工程管理学院,江苏南京210009 [3]国网上海市电力公司电力科学研究院,上海200437

出　　处：《电力与能源》2025年第1期33-40,共8页Power & Energy

摘　　要：随着分布式电源渗透率的日益增加,其不确定性给配电网的安全运行带来了巨大挑战。潮流计算是电力系统规划和运行中的重要工具,减少其计算时间与误差对确保系统稳定运行至关重要。对电流注入型牛顿法进行了优化改进,将雅可比矩阵中的块矩阵部分设为固定值,使得改进后的雅可比矩阵只需生成一次,无须迭代,节省了计算时间。利用IEEE 33节点配电网系统进行算例分析,以风电作为分布式电源,对改进电流注入型牛顿法的修正方程进行线性化,并设置了风机停机和负荷波动两种情况,结果显示得到的误差都很小,证明了所提潮流算法的可行性和实用性。With the increasing penetration of distributed power supply,its uncertainty has posed significant challenges to the safe operation of distribution networks.Power flow calculation is an essential tool in power system planning and operation,and reducing computation time and errors is crucial for maintaining stable operation.This paper optimizes and improves the current injection-based Newton method.By setting the block matrix portion in the Jacobian matrix as a fixed value,the improved Jacobian matrix only needs to be generated once without iteration,significantly reducing the computation time compared to traditional methods.Case studies using the IEEE 33-bus distribution network system are presented,with wind power considered as the distributed generation source.The correction equations of the improved current injection-based Newton method are linearized,and two scenarios—wind turbine shutdown and load fluctuation—are analyzed.The errors obtained through the proposed method are very small,demonstrating the feasibility and practicality of the proposed power flow algorithm.

关 键 词：配电网 电力系统潮流计算 雅可比矩阵 电流注入型牛顿法 

分 类 号：TM774[电气工程—电力系统及自动化]