Assessment of Harmonic Emission Value of Distributed Generation System in Microgrid Based on Improved Complex Linear Regression

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Paper number
0181
Working Group Number
Conference name
CIRED 2018 Ljubljana Workshop
Conference date
7 - 8 June 2018
Conference location
Ljubljana, Slovenia
Peer-reviewed
Yes
Short title
Convener
Authors
Zhang, Peng, Electric Power Research Institute of State Grid Shanghai Electric Power Company, China
Pan, Ling, Electric Power Research Institute of State Grid Shanghai Electric Power Company, China
Abstract
LCL filters of distributed generation (DG) and reactive power compensation devices may cause the harmonic impedance of distributed generation system (DGS) to be not much larger than that of the utility, so the influence by the harmonic impedance of DGS can not be ignored while assessing the harmonic emission value of DGS A method based on improved complex linear regression is proposed in this paper for assessing the harmonic emission value of DGS. The linear regression model is established by using the harmonic current at PCC point as the explanatory variable and the harmonic voltage of the DGS as the explanatory variable. The utility harmonic impedance is calculated by complex least squares method. For various of the topology of DGS feeder network, an equivalent method of feeder network is proposed to calculate the harmonic impedance of DGS. Simulation and measured data verify the effectiveness of the proposed method
Table of content
Keywords
Publisher
AIM
Date
2018-06-07
Permanent link to this record
https://www.cired-repository.org/handle/20.500.12455/1225
http://dx.doi.org/10.34890/363
ISSN
2032-9628
ISBN
978-2-9602415-1-8