公开(公告)号：US20130173189A1

公开(公告)日：2013-07-04

申请号：US13730421

申请日：2012-12-28

Applicant: Peng Zhang ,  Hui Xue ,  Ali Abdollahi

Inventor： Peng Zhang ,  Hui Xue ,  Ali Abdollahi

IPC: G06F17/17 ,  G06F17/16 ,  G01R21/00

CPC classification number: G06F17/17 ,  G01R19/2513 ,  G01R21/00 ,  G01R23/20 ,  G06F17/10 ,  G06F17/16 ,  Y02E60/728 ,  Y04S10/265

Abstract: A high-resolution Subspace-Least Mean Square (S-LMS) method for harmonic and interharmonic measurement in power systems is provided. The eigenvector corresponding to the smallest eigenvalue is used to calculate the frequencies of the signal, and the least mean square method is used to estimate the amplitude and phase angle of harmonic and interharmonic components based on the computed frequencies and time domain measurements of the signal. Three schemes, namely sparsity, catch-and-pinpoint, and hybrid are presented. The S-LMS method provides accurate phasor, harmonic and interharmonic measurements for power system monitoring. The speed, accuracy, and resilience of the S-LMS method can be further increased by each of the three schemes. The method has a wide range of applications in power quality analyzers, synchronized phasor measurement, situational awareness, dynamic equivalencing, and smart meters.

Abstract translation: 提供了用于电力系统谐波和间谐波测量的高分辨率子空间 - 最小均方（S-LMS）方法。 使用对应于最小特征值的特征向量来计算信号的频率，并且使用最小均方根据信号的计算频率和时域测量来估计谐波和间谐波分量的幅度和相位角。 提出了三个方案，即稀疏性，准确性和准确性和混合性。 S-LMS方法为电力系统监测提供了准确的相量，谐波和间谐波测量。 S-LMS方法的速度，准确性和弹性可以通过三种方案中的每一种进一步提高。 该方法在电能质量分析仪，同步相量测量，情景感知，动态等效和智能电表方面具有广泛的应用。