Real-time coordination of integrated transmission and distribution systems: Flexibility modeling and distributed NMPC scheduling
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Author / Producer
Date
2024-09
Publication Type
Journal Article
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yes
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Abstract
This paper proposes a real-time distributed operational architecture to coordinate integrated transmission and distribution systems (ITD). At the distribution system level, the distribution system operator (DSO) calculates the aggregated flexibility of all controllable devices by power-energy envelopes and provides them to the transmission system operator (TSO). At the transmission system level, a distributed nonlinear model predictive control (NMPC) approach is proposed to coordinate the economic dispatch of multiple TSOs, considering the aggregated flexibility of all distribution systems. The subproblems of the proposed approach are associated with different TSOs and individual time periods. In addition, the aggregated flexibility of controllable devices in distribution networks is encapsulated, re-calculated, and communicated through the power-energy envelopes, facilitating a reduction in computational complexity and eliminating redundant information exchanges between TSOs and DSOs, thereby enhancing privacy and security. The framework's effectiveness and applicability in real-world scenarios are validated through simulated operational scenarios on a summer day in Germany, highlighting its robustness in the face of significant prediction mismatches due to severe weather conditions.
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published
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Book title
Journal / series
Volume
234
Pages / Article No.
110627
Publisher
Elsevier
Event
Edition / version
Methods
Software
Geographic location
Date collected
Date created
Subject
Data preservation; Distributed nonlinear model predictive control; Flexibility aggregation; Integrated transmission and distribution systems; Multiperiod AC optimal power flow
Organisational unit
09481 - Hug, Gabriela / Hug, Gabriela
02632 - Inst. f. El. Energieübertragung u. Hoch. / Power Systems and High Voltage Lab.
Notes
Funding
180545 - NCCR Automation (phase I) (SNF)