电网技术Issue(11)：3178-3184,7.DOI:10.13335/j.1000-3673.pst.2014.11.035
基于复值独立分量分析的配电网谐波状态估计
Harmonic State Estimation in Power Distribution Network Based on Complex Independent Component Analysis
韩斐 1杨洪耕1
作者信息
- 1. 四川大学 电气信息学院，四川省 成都市 610065
- 折叠
摘要
Abstract
In allusion to the fact that the harmonic current amplitudes cannot be accurately estimated by independent component analysis (ICA) under unknown harmonic impedances, a complex independent component analysis based calculation method of phasor proportional coefficients is proposed to estimate both amplitudes and phase angles of harmonic currents. Firstly, the complex independent component analysis is used to estimate the initial values of harmonic current phasors; secondly, considering that the equivalent impedance at system side is far less than that at load side, so neglecting the shunting effect of linear load on harmonic currents the calculation methods of phasor proportional coefficients under two different conditions are derived;finally both amplitudes and phase angles of harmonic currents are determined. The proposed method is validated by IEEE 14-bus distribution system and a certain regional power network, and the obtained results are compared with those from existing ICA method, and comparison result shows that using the proposed method both amplitudes and phase angles of harmonic currents can be accurately estimated under unknown harmonic impedances.关键词
谐波状态估计/复值独立分量分析/谐波电流幅值/谐波电流相位/相量比例系数Key words
harmonic state estimation/complex independent component analysis/harmonic current amplitude/harmonic current phase/phasor scale factor分类
信息技术与安全科学引用本文复制引用
韩斐,杨洪耕..基于复值独立分量分析的配电网谐波状态估计[J].电网技术,2014,(11):3178-3184,7.
