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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

Ke Jia

Hongsheng Wei

Tianshu Bi

David W.P. Thomas dave.thomas@nottingham.ac.uk

Mark Sumner mark.sumner@nottingham.ac.uk



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. 

Journal Article Type Article
Publication Date Jan 31, 2017
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
APA6 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), doi:10.1109/TSTE.2016.2582846
DOI https://doi.org/10.1109/TSTE.2016.2582846
Keywords Islanding detection; Active injection method; High frequency impedance estimation; Multi-inverter-based DG
Publisher URL http://ieeexplore.ieee.org/document/7496908/
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../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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