基于矩阵束法的超低频振荡辨识方法研究  

Research on identification method of ultra-low frequency oscillation based on matrix pencil method

作　　者：周剑 徐光虎 邱建 张建新 朱成亮 朱丹蕾 马恒瑞 ZHOU Jian;XU Guanghu;QIU Jian;ZHANG Jianxin;ZHU Chengliang;ZHU Danlei;MA Hengrui(Power Dispatching Control Center,China Southern Power Grid,Guangzhou 510530,China;School of Electrical Engineering and Automation,Wuhan University,Wuhan 430072,China;State Grid Jiaxing Power Supply Company,Jiaxing 314000,China;Tus-Institute for Renewable Energy,Qinghai University,Xining 810016,China)

机构地区：[1]南方电网电力调度控制中心,广东广州510530 [2]武汉大学电气与自动化学院,湖北武汉430072 [3]嘉兴供电公司,浙江嘉兴314000 [4]青海大学启迪新能源学院,青海西宁810016

出　　处：《武汉大学学报（工学版）》2020年第6期542-549,共8页Engineering Journal of Wuhan University

基　　金：国家自然科学基金资助项目(编号:51777142,51907096)。

摘　　要：云南异步联网后出现的超低频振荡现象长期影响着电力系统安全稳定运行,解决和缓解这一问题的首要任务是进行超低频振荡辨识,因此对基于矩阵束法的超低频振荡识别方法进行了研究。首先详细分析了常用的超低频振荡模态识别手段,然后基于超低频振荡的特点,在基本矩阵束算法的基础上进一步提出了可用于广域超低频震荡识别的基于主成分分析定阶的改进矩阵束算法,最后在相同算例条件下,分别与ITD(Ibrahim time domain)方法和自回归滑动平均模型方法进行时域仿真校核和比较,仿真结果证明了所提出方法的有效性和准确性。The ultra-low frequency oscillation phenomenon that occurs after asynchronous networking in Yunnan Power Grid has long-term influences on the safe and stable operation of the power system.The primary task of solving and relieving this problem is to identify the ultra-low frequency oscillation.Therefore,an algorithm based on matrix pencil method to identify the ultra-low frequency oscillation is proposed in this paper.First,the commonly used ultra-low frequency oscillation mode identification methods are analyzed in detail.Then,according to the characteristics of ultra-low frequency oscillation and the basic matrix pencil algorithm,an improved matrix pencil algorithm is proposed for wide-area ultra-low frequency oscillation identification based on principal component analysis and order determination.Finally,the results of the proposed method are compared with those of the ITD(Ibrahim time domain)method and the autoregressive moving average model method for the same calculation example.The simulation results demonstrate the validity and accuracy of the proposed method.

关 键 词：超低频振荡 辨识方法 矩阵束法 异步联网 

分 类 号：TM726[电气工程—电力系统及自动化]