基于改进矩阵束的动态同步相量测量算法  

Dynamic Synchronous Phasor Estimation Algorithm Based on Improved Matrix Pencil

作　　者：黄瑞 宋健 肖宇 刘谋海 温和[1,3] HUANG Rui;SONG Jian;XIAO Yu;LIU Mouhai;WEN He(College of Electrical and Information Engineering,Hunan University,Changsha 410082,China;State Grid Hunan Electric Power Corporation Limited,Changsha 410004,China;Hunan Province Key Laboratory of Intelligent Electrical Measurement and Application Technology,Changsha 410004,China)

机构地区：[1]湖南大学电气与信息工程学院,湖南长沙410082 [2]国网湖南省电力有限公司,湖南长沙410004 [3]智能电气量测与应用技术湖南省重点实验室,湖南长沙410004

出　　处：《湖南大学学报（自然科学版）》2022年第2期135-142,共8页Journal of Hunan University:Natural Sciences

基　　金：国家自然科学基金面上项目(61771190)。

摘　　要：随着现代电网规模不断增大,分布式电源大规模接入,强谐波、高噪声和信号动态多变等问题会降低同步相量测量算法的准确度.为准确测量现代电网同步相量参数,提出一种结合二阶泰勒动态相量模型和改进矩阵束优势的同步相量测量算法,用于动态条件下电力系统同步相量幅值和相角参数精确测量.本文先对算法进行数学推导,然后根据我国同步相量装置检测规范中指定的实验案例对测量准确度进行详细评估.实验结果表明,算法在频率偏差、幅度调制等情景下具有很高的测量精度,符合我国同步相量检测规范要求,具有一定工程应用价值.With the increasing scale of modern power grid and the large-scale access of distributed generation,the problems of strong harmonic,high noise and dynamic signal change will reduce the accuracy of the synchronous phasor measurement algorithm.In order to accurately measure the synchronous phasor parameters of modern power grid,a algorithm based on the second-order Taylor dynamic phasor model and the improved matrix pencil is proposed,which can be used to accurately measure the amplitude and angle parameters of synchronous phasor in power system under dynamic conditions.Firstly,the algorithm is deduced mathematically,and then the measurement accuracy is evaluated in detail according to the experimental cases specified in the test specification of synchronous phasor device in our country.The experimental results show that the algorithm has a high measurement accuracy under the conditions of frequency deviation and amplitude modulation,which meets the requirements of the detection specifications and has a certain engineering application value.

关 键 词：同步相量测量 动态相量模型 矩阵束 频率估计 最小二乘法 

分 类 号：TM714[电气工程—电力系统及自动化]