基于内网实测信息的多端口外网静态等值方法  

Static equivalence of external multi-port network based on measured information of internal network

作　　者：余娟[1] 朱柳[1] 颜伟[1] 赵霞[1] 卢建刚[2] 郭文鑫[2] 

机构地区：[1]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400030 [2]广东电网电力调度控制中心,广东广州510600

出　　处：《电力自动化设备》2013年第6期32-37,共6页Electric Power Automation Equipment

基　　金：国家自然科学基金资助项目(51007098;50577073)~~

摘　　要：在外网信息完全未知的情况下,提出基于内网实测信息的多端口外网静态等值方法,以估计多端口外网等值网络及其参数。该方法所需的内网实测信息不要求内网支路开断,利用外网等值参数与内网实测信息之间的约束关系,采用两阶段估计方案,建立多端口外网等值参数的量测方程及其两阶段的最小二乘模型,再利用最小二乘法求解得到多端口外网等值网络参数。IEEE 39节点系统和广东电网的仿真结果验证了所提方法的正确性。A method of static equivalence based on the measured information of internal network is proposed to estimate the equivalent network of external multi-port network and its parameters when its information is completely unknown.It adopts the two-stage estimation scheme to set the measuring equation of equivalent external network parameters and its two-stage least squares model according to the constraint relation between the equivalent parameters of external network and the internal network information,which is measured without the break-off of internal network branch,and then applies the least squares method to obtain the equivalent parameters of external multi-port network.The simulative results for IEEE 39-bus system and Guangdong Power Grid verify the correctness of the proposed method.

关 键 词：静态分析 静态等值 多端口 最小二乘 实测信息 模型 

分 类 号：TM732[电气工程—电力系统及自动化]