As the energy sector grapples with the transition to renewable sources, a new study from Abbas Rabiee at the Department of Electrical and Computer Engineering at Université Laval, Quebec, sheds light on the critical dynamics at play between transmission and distribution networks. The research, published in ‘IET Renewable Power Generation’, explores the factors influencing the flexibility of active distribution networks (ADNs), which are increasingly vital as distributed energy resources (DERs) proliferate.
With the rise of DERs, such as solar panels and wind turbines, the traditional energy grid faces unprecedented challenges. Rabiee’s research delves into the complexities of managing active and reactive power within ADNs, a crucial aspect for transmission system operators (TSOs) who are looking to harness the capabilities of these decentralized energy sources. “Understanding the active/reactive power capability of ADNs is essential for effective grid management,” Rabiee emphasizes, highlighting the need for collaboration between TSOs and distribution system operators (DSOs).
The study introduces a two-step optimization model that captures the power/quantity (P/Q) flexibility area of ADNs, taking into account various influential factors such as the joint dispatch of DERs, load dependency on voltage, and the characteristics of parallel distribution networks. The findings reveal that neglecting these elements can significantly alter the P/Q flexibility maps, which are essential for energy planning and operational efficiency. For instance, the research indicates that connecting to a weaker upstream network can diminish flexibility, while reactive power redispatch can enhance active power margins.
This research holds substantial commercial implications. By accurately characterizing the dynamics at the TSO-DSO interface, energy providers can optimize the integration of renewable technologies, enhancing grid reliability and efficiency. As Rabiee notes, “The collaborative support of reactive power from neighboring feeders can expand the achievable P/Q flexibility, paving the way for a more resilient energy system.”
The insights from this study not only bolster operational strategies for energy companies but also underscore the importance of precision in grid management as the sector moves toward a zero-carbon future. As the world shifts away from fossil fuels, understanding these interconnections becomes paramount for achieving a seamless energy transition.
For those interested in exploring the nuances of this research further, details can be found in the article published in ‘IET Renewable Power Generation’, which translates to ‘IET Renewable Power Generation’. For more information about the lead author, visit lead_author_affiliation.
