In a landscape increasingly dominated by renewable energy sources, a new study published in ‘IEEE Access’ sheds light on the critical need for flexibility in power systems. The research, led by Hannu Laaksonen from the School of Technology and Innovations at the University of Vaasa, Finland, explores advanced control principles for distributed energy resources (DERs) and on-load tap-changers (OLTCs). This innovative approach aims to bolster the capacity of local distribution system operators (DSOs) and transmission system operators (TSOs) to manage the variability inherent in renewable energy generation while meeting the rising demands of electrification across sectors.
As the integration of variable renewable energy sources like solar and wind accelerates, the challenge of maintaining system stability becomes more pronounced. The study proposes a coordinated management scheme that prioritizes flexibility services based on the severity of frequency deviations. Laaksonen explains, “During smaller frequency deviations, the needs of the DSOs take precedence, allowing them to effectively manage local grid conditions. Conversely, during larger deviations, the TSO’s requirements become paramount to stabilize the entire power system.”
This dual-priority approach not only enhances the responsiveness of the energy grid but also significantly increases the hosting capacity for DERs, particularly photovoltaics (PVs) and electric vehicles (EVs). The findings indicate that the new OLTC control principles could enable a 7.7% reduction in current for the same active power response, or an 8.5% increase in active power response with the same current. Such advancements could lead to more efficient energy distribution and a more resilient grid, positioning utilities to better accommodate the growing influx of renewable energy.
The implications for the energy sector are substantial. As Laaksonen notes, “By optimizing the interaction between local and system-wide operators, we can ensure that flexibility services are not just an afterthought but a fundamental aspect of our energy infrastructure.” This research could pave the way for more robust active network management strategies, ultimately leading to a more reliable and sustainable energy future.
With the increasing reliance on electrification in transportation and heating, the adoption of these advanced control strategies could facilitate a smoother transition to a low-carbon economy. The study highlights the importance of integrating innovative technologies and management schemes to address the challenges posed by a rapidly changing energy landscape.
For more insights into this groundbreaking research, you can visit the University of Vaasa’s School of Technology and Innovations. The findings not only contribute to the academic discourse but also hold significant promise for the commercial viability and operational efficiency of energy providers in the face of evolving demands.
