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Sustainability
Volume 12
Issue 8
10.3390/su12083332
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Article

Exploiting OLTC and BESS Operation Coordinated with Active Network Management in LV Networks

by
Konstantinos Kotsalos
1,*,†,
Ismael Miranda
2,
Jose Luis Dominguez-Garcia
3,
Helder Leite
1,
Nuno Silva
4 and
Nikos Hatziargyriou
5
1
Faculty of Engineering (FEUP), University of Porto, 4200-465 Porto, Portugal
2
Efacec, Division of Storage, 4471-907 Porto, Portugal
3
Electrical Power Systems Area, Catalonia Institute for Energy Research (IREC), 08930 Barcelona, Spain
4
Efacec, Division of T&I, 4466-952 Porto, Portugal
5
School of Electrical and Computer Engineering, National Technical University of Athens (NTUA), 15780 Zografou, Greece
*
Author to whom correspondence should be addressed.
†
Current address: Rua Barata Feyo 125 R/C 0A1, 4250-075 Porto, Portugal.
Sustainability 2020, 12(8), 3332; https://doi.org/10.3390/su12083332
Received: 6 March 2020 / Revised: 9 April 2020 / Accepted: 16 April 2020 / Published: 20 April 2020
(This article belongs to the Special Issue Integration and Control of Renewable Energy and Power Electronics for Future Power Systems)
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Abstract

The large number of small scale Distributed Energy Resources (DER) such as Electric Vehicles (EVs), rooftop photovoltaic installations and Battery Energy Storage Systems (BESS), installed along distribution networks, poses several challenges related to power quality, efficiency, and reliability. Concurrently, the connection of DER may provide substantial flexibility to the operation of distribution grids and market players such as aggregators. This paper proposes an optimization framework for the energy management and scheduling of operation for Low Voltage (LV) networks assuring both admissible voltage magnitudes and minimized line congestion and voltage unbalances. The proposed tool allows the utilization and coordination of On-Load Tap Changer (OLTC) distribution transformers, BESS, and flexibilities provided by DER. The methodology is framed with a multi-objective three phase unbalanced multi-period AC Optimal Power Flow (MACOPF) solved as a nonlinear optimization problem. The performance of the resulting control scheme is validated on a LV distribution network through multiple case scenarios with high microgeneration and EV integration. The usefulness of the proposed scheme is additionally demonstrated by deriving the most efficient placement and sizing BESS solution based on yearly synthetic load and generation data-set. A techno-economical analysis is also conducted to identify optimal coordination among assets and DER for several objectives. View Full-Text
Keywords: low voltage networks; multi-period optimal power flow; multi-temporal optimal power flow; active distribution networks; unbalanced networks low voltage networks; multi-period optimal power flow; multi-temporal optimal power flow; active distribution networks; unbalanced networks
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MDPI and ACS Style

Kotsalos, K.; Miranda, I.; Dominguez-Garcia, J.L.; Leite, H.; Silva, N.; Hatziargyriou, N. Exploiting OLTC and BESS Operation Coordinated with Active Network Management in LV Networks. Sustainability 2020, 12, 3332. https://doi.org/10.3390/su12083332

AMA Style

Kotsalos K, Miranda I, Dominguez-Garcia JL, Leite H, Silva N, Hatziargyriou N. Exploiting OLTC and BESS Operation Coordinated with Active Network Management in LV Networks. Sustainability. 2020; 12(8):3332. https://doi.org/10.3390/su12083332

Chicago/Turabian Style

Kotsalos, Konstantinos, Ismael Miranda, Jose L. Dominguez-Garcia, Helder Leite, Nuno Silva, and Nikos Hatziargyriou. 2020. "Exploiting OLTC and BESS Operation Coordinated with Active Network Management in LV Networks" Sustainability 12, no. 8: 3332. https://doi.org/10.3390/su12083332

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