Identification of Low-frequency Oscillations in Power Systems Based on Improved HHT

被引：0

作者：

Ma Yan-feng ^{[1
]}

Zhao Shu-qiang ^{[1
]}

Hu Yong-qiang ^{[1
]}

机构：

[1] North China Elect Power Univ, Dept Elect Engn, Baoding, Peoples R China

来源：

2011 ASIA-PACIFIC POWER AND ENERGY ENGINEERING CONFERENCE (APPEEC) | 2011年

关键词：

low-frequency oscillations; HHT; modes mixing; empirical mode decompositon; masking signal; mode identification; HUANG SPECTRAL-ANALYSIS; HILBERT;

D O I：

暂无

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

In order to solve mode mixing, an improved HHT (IHHT) is proposed to identify modes of low frequency oscillation (LFO) in power systems. Firstly, by means of Fourier transform the approximate frequency range of every mode is determined; then methods such as masking signals or filters are chosen to separate mixing modes. Finally mode parameters can be calculated by linear least quadratic fitting. Simulated signals are analyzed by conventional HHT and IHHT, results show that IHHT can correctly separate mixing modes and identify modes parameters, results are in advance of traditional algorithms, so the proposed algorithm is suitable to mode identification of LFO.

引用

页数：4

共 19 条

[1]

[Anonymous], 2002, THEORY ANAL DYNAMIC

[2]

Deering R, 2005, INT CONF ACOUST SPEE, P485

[3]

Han Song, 2008, Power System Technology, V32, P56

[4]

[胡维平 Hu Weiping], 2007, [华南理工大学学报. 自然科学版, Journal of South China University of Technology. Natural Science Edition], V35, P15

[5] A new view of nonlinear water waves: The Hilbert spectrum [J].

Huang, NE ;

Shen, Z ;

Long, SR .

ANNUAL REVIEW OF FLUID MECHANICS, 1999, 31 :417-457

[6] The empirical mode decomposition and the Hilbert spectrum for nonlinear and non-stationary time series analysis [J].

Huang, NE ;

Shen, Z ;

Long, SR ;

Wu, MLC ;

Shih, HH ;

Zheng, QN ;

Yen, NC ;

Tung, CC ;

Liu, HH .

PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 1998, 454 (1971) :903-995

[7]

Li Tian-yun, 2005, Proceedings of the CSEE, V25, P52

[8]

Li Tian-yun, 2007, Proceedings of the CSEE, V27, P79

[9]

Li Tian-yun, 2006, Proceedings of the CSEE, V26, P24

[10]

Ma Y., 2007, POWER SYST TECHNOL, V31, P43

← 1 2 →