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<p>Power system congestion, arising from unforeseen events or significant power flow changes, leads to increased electricity costs, inefficient resource utilization, and compromised system reliability. Load shedding, while effective for congestion management, incurs significant costs and challenges in restructured power systems. To address these issues, this study introduces the "Sequential Intraday Flexibility Market" platform. This innovative framework operates at both the transmission and distribution system levels, enabling cost-effective congestion management through flexibility exchanges. Key contributions include the integration of reconfiguration and load transfer mechanisms among neighboring distribution networks, enhancement of TSO-DSO coordination while maintaining operational privacy, and the introduction of a sequential intraday market to address imbalances arising from day-ahead commitments. By leveraging decentralized strategies and preserving the independence of DSOs, the proposed model optimizes resource allocation and minimizes operational costs. Using the IEEE 9-bus system with four DSOs (with IEEE 69-bus distribution networks), the proposed market structure is analyzed to identify optimal DSO participation strategies, demonstrating its potential to improve system efficiency, manage congestion effectively, and enhance the utilization of distributed energy resources. </p>

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Optimizing flexibility exchanges for congestion management: a sequential intraday flexibility market approach

  • 期刊论文

  • 发表日期：

    2025年5月30日

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  • Reza Khodabakhsh,
  • Mahmoud Reza Haghifam,
  • Mohammad Kazem Sheikh-El-Eslami

摘要

Power system congestion, arising from unforeseen events or significant power flow changes, leads to increased electricity costs, inefficient resource utilization, and compromised system reliability. Load shedding, while effective for congestion management, incurs significant costs and challenges in restructured power systems. To address these issues, this study introduces the "Sequential Intraday Flexibility Market" platform. This innovative framework operates at both the transmission and distribution system levels, enabling cost-effective congestion management through flexibility exchanges. Key contributions include the integration of reconfiguration and load transfer mechanisms among neighboring distribution networks, enhancement of TSO-DSO coordination while maintaining operational privacy, and the introduction of a sequential intraday market to address imbalances arising from day-ahead commitments. By leveraging decentralized strategies and preserving the independence of DSOs, the proposed model optimizes resource allocation and minimizes operational costs. Using the IEEE 9-bus system with four DSOs (with IEEE 69-bus distribution networks), the proposed market structure is analyzed to identify optimal DSO participation strategies, demonstrating its potential to improve system efficiency, manage congestion effectively, and enhance the utilization of distributed energy resources.