基于HankelDMD的电力系统机电参数提取方法,属于电力系统运行维护领域.本发明首先挖掘了在电力系统环境激励下随机响应数据中存在机电振荡模式,而后利用HankelDMD方法从随机响应数据中在线提取电力系统机电振荡参数(振荡频率和阻尼比).该方法实现了在电力系统正常运行情况下的机电振荡参数提取;与以往的利用较长分析窗进行机电...
更何况我们的最终目标是通过数据来识别背后的动力学方程,这种假设太过奢侈了(变成了一个鸡生蛋还是蛋生鸡的问题)。 所以,这里我们介绍一个很常用的trick:使用延时嵌入法(time-delay embedding)来构造Hankel矩阵,来“近似”地线性化dynamics。 理论 使用延迟嵌入法(time delay embedding)来构造Hankel矩阵,这种方法对于存...
基于HankelDMD的电力系统机电参数提取方法,属于电力系统运行维护领域.本发明首先挖掘了在电力系统环境激励下随机响应数据中存在机电振荡模式,而后利用HankelDMD方法从随机响应数据中在线提取电力系统机电振荡参数(振荡频率和阻尼比).该方法实现了在电力系统正常运行情况下的机电振荡参数提取;与以往的利用较长分析窗进行机电...
To improve the ability of the dynamic mode decomposition (DMD) algorithm to capture modes from ambient data, a Hankel matrix is introduced to rearrange the measured data. With the extension function of the Hankel block, the mode frequency and damping ratio can be estimated by using only a ...
(ii) the Hankel DMD for large-scale data consisting of over a billion grid points is feasible by using the proposed exact parallel algorithm with high parallel efficiency on more than 6 thousand CPU cores, and (iii) the Hankel DMD has advantages for high-dimensional data such as n 10 9 ...
It is derived from Hankel DMD with control (HDMDc) to deal with highly nonlinear dynamics using augmented linear models, exploiting input and output regressors. The proposed multi-step-ahead HDMDc (MSA-HDMDc) is designed to perform multi-step prediction and capture complex dynamics with a ...