Real-Time Coordination of Integrated Transmission and Distribution Systems: Flexibility Modeling and Distributed NMPC Scheduling
arxiv(2024)
摘要
This paper proposes a real-time distributed operational architecture to
efficiently coordinate intergrated transmission and distribution systems (ITD).
At the distribution system level, the distribution system operator (DSO)
computes the aggregated flexibility of all controllable devices by power-energy
envelopes and provides them to the transmission system operators. At the
transmission system level, a distributed nonlinear MPC 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, significantly reducing computational costs and
eliminating redundant information exchanges between TSOs and DSOs for privacy
and security preservation. The extensive numerical experiment demonstrates the
scalability and the computational efficiency of the proposed distributed
operational architecture.
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