LF Energy Summit 2024

Assessing the benefits of interconnection projects is one of the goals of ENTSO-E Ten-Year Network Development Plan (TYNDP). New electricity interconnections, by increasing power exchange capabilities between countries are key elements to make the energy transition happen in a cost effective and secure way. Being able to evaluate the increased power flows brought by a new interconnection project is then of major importance. To calculate this indicator (named ΔNTC: increase in Net Transfer Capacity), a tool chain based on pyPowSyBl (from Powsybl Linux Fundation Energy project) has been developed within an ENTSO-E working group and will be used for the next TYNDP. Based on a real HVDC interconnection project between France and Spain and publicly available data, we will illustrate the methodology used and all pyPowSyBl fonctionnalities involved through a Jupyter notebook: • Importing TYNDP2022 French and Spanish transmission grid model (in CGMES format) and merging them to build a common grid model, • Calculating yearly load flow on hourly basis, • Taking into account the impact of line tripping, • Calculating the ΔNTC brought by the interconnection project.