一种基于节点聚合的区域联络线潮流调整方法  

A method for power flow adjustment of tie line based on data splicing of internal and external networks

作　　者：黄磊 鲍颜红 刘映尚[1] 徐泰山 周剑[1] 徐伟 HUANG Lei;BAO Yanhong;LIU Yingshang;XU Taishan;ZHOU Jian;XU Wei(Electric Power Dispatching and Control Center,China Southern Power Grid,Guangzhou 510623,China;NARI Group CO.,Ltd.(State Grid Electric Power Research Institute),Nanjing 210003,China)

机构地区：[1]中国南方电网电力调度控制中心,广东广州510623 [2]南瑞集团有限公司(国网电力科学研究院),江苏南京210003

出　　处：《电力工程技术》2020年第1期71-75,共5页Electric Power Engineering Technology

基　　金：中国南方电网有限公司科技项目“电网限制短路电流运行方式在线智能决策控制系统研究”

摘　　要：在线安全稳定分析数据由本地状态估计数据和上级下发的其他调度机构数据拼接构成,由于两者时间不同步造成区域联络线功率出现偏差。文中提出了一种内外网数据拼接的区域联络线潮流调整方法,在将联络线聚合成联络通道以及将对联络通道灵敏度较大的若干节点聚合的基础上,通过求解聚合节点调整量和联络通道潮流偏差量的线性方程组获得调整量,避免采用优化方法时计算速度慢和部分节点调整量过大的问题;当方程组病态时,通过求解极小范数最小二乘解避免线性方程组无解的问题。该方法可以满足在线安全稳定分析计算速度和准确性要求,且某实际电网的算例验证了该方法的有效性。The online security and stability analysis data is composed of local state estimation data and data of other dispatching agencies issued by the superior.The power deviation of the regional tie line is caused by the synchronization of the time between the two.In this paper,a method of regional tie-line power flow adjustment is proposed for data splicing of internal and external networks.On the basis of aggregation of interconnection lines into contact channels and several nodes with greater sensitivity to the aggregate nodes,the adjustment quantity is obtained by solving the linear equations of aggregate node adjustment quantity and connection channel power flow deviation quantity.When the system is ill-conditioned,the problem of no solution of linear system is avoided by solving minimum norm least squares solution.This method can meet the requirements of speed and accuracy of online safety and stability analysis.The validity of the method is verified by the case of actual power system.

关 键 词：在线安全稳定分析 数据拼接 联络线潮流 线性方程组 最小二乘解 

分 类 号：TM76[电气工程—电力系统及自动化]