Optimal Control of Wind Farms for Coordinated TSO-DSO Reactive Power Management

Research output: Contribution to journalArticleResearchpeer review

Authors

  • David Sebastian Stock
  • Francesco Sala
  • Alberto Berizzi
  • Lutz Hofmann

External Research Organisations

  • Politecnico di Milano
  • Fraunhofer Institute for Wind Energy Systems (IWES)
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Details

Original languageEnglish
Article number173
JournalENERGIES
Volume11
Issue number1
Early online date11 Jan 2018
Publication statusPublished - 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

Sustainable Development Goals

Cite this

Optimal Control of Wind Farms for Coordinated TSO-DSO Reactive Power Management. / Stock, David Sebastian; Sala, Francesco; Berizzi, Alberto et al.
In: ENERGIES, Vol. 11, No. 1, 173, 01.2018.

Research output: Contribution to journalArticleResearchpeer review

Stock DS, Sala F, Berizzi A, Hofmann L. Optimal Control of Wind Farms for Coordinated TSO-DSO Reactive Power Management. ENERGIES. 2018 Jan;11(1):173. Epub 2018 Jan 11. doi: 10.3390/en11010173, 10.15488/3371
Stock, David Sebastian ; Sala, Francesco ; Berizzi, Alberto et al. / Optimal Control of Wind Farms for Coordinated TSO-DSO Reactive Power Management. In: ENERGIES. 2018 ; Vol. 11, No. 1.
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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.",
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