公开(公告)号：US20160274155A1

公开(公告)日：2016-09-22

申请号：US14412675

申请日：2014-03-04

申请人： STATE GRID CORPORATION OF CHINA (SGCC) ,  STATE GRID CHONGQING ELECTRIC POWER CO. ELECTRIC POWER RESEARCH INSTITUTE ,  CHONGQING UNIVERSITY

发明人： Xiyang OU ,  Ran LIU ,  Xingzhe HOU ,  Ke ZHENG ,  Zhihong FU ,  Xiaorui HU ,  Xiaoyong ZHANG ,  Huaiqing ZHANG ,  Jing JI ,  Hua WU ,  Hongliang SUN

IPC分类号： G01R23/16

CPC分类号： G01R23/16

摘要： The application discloses a method for acquiring parameters of a dynamic signal, including: selecting a dynamic sample signal sequence of a power grid to constitute an autocorrelation matrix; determining an effective rank of the autocorrelation matrix and the number of frequency components of the dynamic sample signal sequence; establishing an AR model, and solving a model parameter of the AR model; determining an expression and a complex sequence of the dynamic sample signal sequence by using a Prony algorithm, wherein the dynamic sample signal sequence is represented by the complex sequence with a minimum square error; and substituting a root of a characteristic polynomial corresponding to the model parameter into the complex sequence and solving various parameters of the dynamic sample signal sequence. In the application, with the idea of AR parameter model, a current signal is considered to be a linear combination of signals at previous time points.

摘要翻译： 本申请公开了一种用于获取动态信号的参数的方法，包括：选择电网的动态采样信号序列以构成自相关矩阵; 确定自相关矩阵的有效等级和动态样本信号序列的频率分量的数量; 建立AR模型，解决AR模型的模型参数; 通过使用Prony算法确定动态样本信号序列的表达式和复杂序列，其中动态样本信号序列由具有最小平方误差的复数序列表示; 并将与模型参数对应的特征多项式的根代入复数序列，并求解动态样本信号序列的各种参数。 在应用中，利用AR参数模型的思想，电流信号被认为是前一时刻信号的线性组合。