Article (Scientific journals)
Frequency Response from Solar PV: A Dynamic Equivalence Closed Loop System Identification Approach
Dozein, Mehdi Ghazavi; Chaspierre, Gilles; Mancarella, Pierluigi et al.
2021In IEEE Systems Journal
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Keywords :
Cascading failures; Dynamic equivalencing; Frequency stability; PV frequency response; System identification; Distributed energy resources
Abstract :
[en] Analysis of the frequency response of integrated transmission-distribution networks with deep penetration of solar photovoltaic (PV) generation faces major challenges due to the complexity emerging from dynamic models of the numerous and diverse PV units involved. This work proposes converter-based dynamic equivalent models for both distributed (distribution network-connected) and large-scale (transmission network-connected) PV units which take into account practical issues such as measurement and coordination delays. Differently from previous work that adopted open-loop identification, the unknown model parameters are identified here through a novel closed-loop identification process based on least-square minimization. This allows capturing the continuous interaction between system and PV responses, thus improving the outcome of the overall frequency response model. The proposed models are validated with real data from the August 2018 separation event in Australia. The results demonstrate the excellent performance of the proposed models in determining the frequency response from PV in both transmission and distribution networks, hence paving the way to its adoption in frequency stability analysis in low-carbon grids dominated by frequency-responsive renewables.
Disciplines :
Electrical & electronics engineering
Author, co-author :
Dozein, Mehdi Ghazavi
Chaspierre, Gilles ;  Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Systèmes et modélisation
Mancarella, Pierluigi
Panciatici, Patrick
Van Cutsem, Thierry  ;  Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Systèmes et modélisation
Language :
English
Title :
Frequency Response from Solar PV: A Dynamic Equivalence Closed Loop System Identification Approach
Publication date :
February 2021
Journal title :
IEEE Systems Journal
ISSN :
1932-8184
eISSN :
1937-9234
Publisher :
Institute of Electrical and Electronics Engineers, United States - New York
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 12 January 2021

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