Details
Original language | English |
---|---|
Article number | 173 |
Journal | ENERGIES |
Volume | 11 |
Issue number | 1 |
Early online date | 11 Jan 2018 |
Publication status | Published - Jan 2018 |
Abstract
The growing importance of renewable generation connected to distribution grids requires an increased coordination between transmission system operators (TSOs) and distribution system operators (DSOs) for reactive power management. This work proposes a practical and effective interaction method based on sequential optimizations to evaluate the reactive flexibility potential of distribution networks and to dispatch them along with traditional synchronous generators, keeping to a minimum the information exchange. A modular optimal power flow (OPF) tool featuring multi-objective optimization is developed for this purpose. The proposed method is evaluated for a model of a real German 110 kV grid with 1.6 GW of installed wind power capacity and a reduced order model of the surrounding transmission system. Simulations show the benefit of involving wind farms in reactive power support reducing losses both at distribution and transmission level. Different types of setpoints are investigated, showing the feasibility for the DSO to fulfill also individual voltage and reactive power targets over multiple connection points. Finally, some suggestions are presented to achieve a fair coordination, combining both TSO and DSO requirements.
Keywords
- Active distribution system, Distributed generation, Grid ancillary services, Optimal power flow, Reactive power control, Smart grids, Transmission system, Voltage control, Wind power grid integration
ASJC Scopus subject areas
- Energy(all)
- Renewable Energy, Sustainability and the Environment
- Energy(all)
- Energy Engineering and Power Technology
- Energy(all)
- Energy (miscellaneous)
- Mathematics(all)
- Control and Optimization
- Engineering(all)
- Electrical and Electronic Engineering
Sustainable Development Goals
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In: ENERGIES, Vol. 11, No. 1, 173, 01.2018.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Optimal Control of Wind Farms for Coordinated TSO-DSO Reactive Power Management
AU - Stock, David Sebastian
AU - Sala, Francesco
AU - Berizzi, Alberto
AU - Hofmann, Lutz
N1 - Acknowledgments: The authors sincerely acknowledge the financial support provided by the German Federal Ministry for Economic affairs and Energy as part of the project “IMOWEN” within the research initiative “Zukunftsfähige Stromnetze”.
PY - 2018/1
Y1 - 2018/1
N2 - The growing importance of renewable generation connected to distribution grids requires an increased coordination between transmission system operators (TSOs) and distribution system operators (DSOs) for reactive power management. This work proposes a practical and effective interaction method based on sequential optimizations to evaluate the reactive flexibility potential of distribution networks and to dispatch them along with traditional synchronous generators, keeping to a minimum the information exchange. A modular optimal power flow (OPF) tool featuring multi-objective optimization is developed for this purpose. The proposed method is evaluated for a model of a real German 110 kV grid with 1.6 GW of installed wind power capacity and a reduced order model of the surrounding transmission system. Simulations show the benefit of involving wind farms in reactive power support reducing losses both at distribution and transmission level. Different types of setpoints are investigated, showing the feasibility for the DSO to fulfill also individual voltage and reactive power targets over multiple connection points. Finally, some suggestions are presented to achieve a fair coordination, combining both TSO and DSO requirements.
AB - The growing importance of renewable generation connected to distribution grids requires an increased coordination between transmission system operators (TSOs) and distribution system operators (DSOs) for reactive power management. This work proposes a practical and effective interaction method based on sequential optimizations to evaluate the reactive flexibility potential of distribution networks and to dispatch them along with traditional synchronous generators, keeping to a minimum the information exchange. A modular optimal power flow (OPF) tool featuring multi-objective optimization is developed for this purpose. The proposed method is evaluated for a model of a real German 110 kV grid with 1.6 GW of installed wind power capacity and a reduced order model of the surrounding transmission system. Simulations show the benefit of involving wind farms in reactive power support reducing losses both at distribution and transmission level. Different types of setpoints are investigated, showing the feasibility for the DSO to fulfill also individual voltage and reactive power targets over multiple connection points. Finally, some suggestions are presented to achieve a fair coordination, combining both TSO and DSO requirements.
KW - Active distribution system
KW - Distributed generation
KW - Grid ancillary services
KW - Optimal power flow
KW - Reactive power control
KW - Smart grids
KW - Transmission system
KW - Voltage control
KW - Wind power grid integration
UR - http://www.scopus.com/inward/record.url?scp=85044482010&partnerID=8YFLogxK
U2 - 10.3390/en11010173
DO - 10.3390/en11010173
M3 - Article
AN - SCOPUS:85044482010
VL - 11
JO - ENERGIES
JF - ENERGIES
SN - 1996-1073
IS - 1
M1 - 173
ER -