Values and Impacts of Incorporating Local Flexibility Services in Transmission Expansion Planning
Journal article, 2022

This paper presents a cost-based TSO-DSO coordination model to quantify the value of local flexibility services and analyze its impact on the transmission grid expansion and the system operation. Flexibility is provided to the DC power flow transmission grid model by microgrids within the integrated AC power flow distribution grid model. The model's objective is to minimize the overall cost of transmission investments and procured flexibility and is achieved using a bilevel optimization approach where the power exchanges on all connected grid interfaces are controlled. Case studies using a combined test system of the IEEE RTS-96 transmission network interfacing multiple 33-bus distribution grids were performed to validate the model and assess the values and impacts of local flexibility on the transmission system expansion. The results showed that the proposed model modified the investment plan and dispatch of flexibility resources reducing the investment and operation cost of the transmission system.

transmission expansion.

Distribution and transmission system coordination

flexibility service


Erik Fransisco Alvarez Quispe

Universidad Pontificia Comillas

Luis Olmos

Universidad Pontificia Comillas

Andres Ramos

Universidad Pontificia Comillas

Kyriaki Antoniadou-Plytaria

Chalmers, Electrical Engineering, Electric Power Engineering

David Steen

Chalmers, Electrical Engineering, Electric Power Engineering

Anh Tuan Le

Chalmers, Electrical Engineering, Electric Power Engineering

Electric Power Systems Research

0378-7796 (ISSN)

Vol. 212 108480


European Commission (EC) (EC/H2020/864048), 2019-11-01 -- 2023-04-30.

Subject Categories

Energy Systems

Control Engineering

Other Electrical Engineering, Electronic Engineering, Information Engineering



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