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An islanding detection method for multi-DG systems based on high-frequency impedance estimation

Jia, Ke; Wei, Hongsheng; Bi, Tianshu; Thomas, David W.P.; Sumner, Mark

Authors

JIE KE JIE.KE@NOTTINGHAM.AC.UK
Research Fellow

Hongsheng Wei

Tianshu Bi

DAVID THOMAS dave.thomas@nottingham.ac.uk
Professor of Electromagnetics Applications

MARK SUMNER mark.sumner@nottingham.ac.uk
Professor of Electrical Energy Systems



Abstract

Active islanding detection methods are generally employed for grid-connected inverter-based Distributed Generation (DG). However, there might be mutual influences and power quality issues caused by the disturbance signal when multiple inverters are involved. To address those problems, this paper analyzes the potential failure mechanism of the f-Q (frequency-reactive power) drifting active method in multiple-DG situations. Then, a novel high frequency transient injection based islanding detection method that is suitable for both single and multiple-DGs is proposed. Compared with the conventional injection methods, a high frequency impedance model for DG is provided for better theoretical analysis. By means of the intermittent Time Domain Low Voltage Condition (TDLVC) injection control, this method can achieve good accuracy and reduce disturbances to power system. 

Citation

Jia, K., Wei, H., Bi, T., Thomas, D. W., & Sumner, M. (2017). An islanding detection method for multi-DG systems based on high-frequency impedance estimation. IEEE Transactions on Sustainable Energy, 8(1), https://doi.org/10.1109/TSTE.2016.2582846

Journal Article Type Article
Acceptance Date Jun 16, 2016
Online Publication Date Jun 21, 2016
Publication Date Jan 31, 2017
Deposit Date Mar 6, 2018
Publicly Available Date Mar 6, 2018
Journal IEEE Transactions on Sustainable Energy
Print ISSN 1949-3029
Electronic ISSN 1949-3029
Publisher Institute of Electrical and Electronics Engineers
Peer Reviewed Peer Reviewed
Volume 8
Issue 1
DOI https://doi.org/10.1109/TSTE.2016.2582846
Keywords Islanding detection; Active injection method; High frequency impedance estimation; Multi-inverter-based DG
Public URL http://eprints.nottingham.ac.uk/id/eprint/50204
Publisher URL http://ieeexplore.ieee.org/document/7496908/
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf
Additional Information c2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including
reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





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