design of non-interacting controllers for pv systems in distribution networks

Hossain, MJ, Mahmud, Md Apel, Pota, HR and Mithulananthan, N 2014, design of non-interacting controllers for pv systems in distribution networks, IEEE Transactions on Power Systems, vol. 29, no. 6, pp. 2763-2774, doi: 10.1109/TPWRS.2014.2315803.

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Title design of non-interacting controllers for pv systems in distribution networks
Author(s) Hossain, MJ
Mahmud, Md ApelORCID iD for Mahmud, Md Apel
Pota, HR
Mithulananthan, N
Journal name IEEE Transactions on Power Systems
Volume number 29
Issue number 6
Start page 2763
End page 2774
Total pages 12
Publisher Institute of Electrical and Electronics Engineers
Place of publication Piscataway, N.J.
Publication date 2014-04
ISSN 0885-8950
Keyword(s) Distribution systems
dynamic interactions
photovoltaic unit
robust control
stability and uncertainty
Summary This paper makes two contributions. Firstly, it is shown that there may exist oscillations in distribution networks with physically close photovoltaic (PV) units due to their control interactions. The main reason for oscillations is changes in the dynamics of PV units with varying solar irradiance and the decentralized tuning of control parameters for the nominal operating condition. Eigenvalue analysis, nonlinear interaction index, and time-domain simulations are used to assess the degree and impacts of dynamic interactions. Secondly, a decentralized robust controldesign is proposed to ensure a non-interacting and well-damped response under varying operating conditions for physically close PV units. The control design process uses an estimate of changes in the model due to variations in solar irradiations, changing electric loads, and the dynamics of the physically close PV units. A minimally conservative method is used to capture the estimate as a norm-bounded uncertainty. Time-domain simulations on a test distribution system verify the predictions of the interaction analysis and demonstrate the performance of the proposed robust controller under different system contingencies.
Language eng
DOI 10.1109/TPWRS.2014.2315803
Field of Research 0906 Electrical And Electronic Engineering
HERDC Research category C1.1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2014 IEEE
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