Values and impacts of incorporating local flexibility services in transmission expansion planning

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