In the rapidly evolving energy landscape, battery energy storage systems (BESSs) are emerging as crucial players in maintaining grid stability, particularly as renewable energy sources like wind and solar continue to grow. A recent study published in the journal *Energies* (which translates to *Energies* in English) and led by Venkata Nagarjuna Anudeep Kandrathi of Arizona State University’s School of Electrical, Computer, and Energy Engineering, sheds light on how strategic BESS selection can significantly enhance the contingency response of power systems.
The research, conducted using the SRP power system—a real-world system with over 2500 buses—focuses on the dynamic response capabilities of BESSs to improve system reliability and security during contingencies. By analyzing a list of actual queued BESS projects, the study identifies selection criteria that enable viable and cost-effective solutions from a planning perspective. The goal is to enhance system stability by maintaining voltage levels and mitigating fault impacts.
One of the key findings of the study is that with as few as four strategically selected BESS units, the system can effectively mitigate more than 90% of under-voltage violations and approximately 75% of over-voltage violations. This is a significant achievement, considering the complexity and scale of the SRP power system.
“The dynamic response capabilities of BESSs can be a valuable tool in ensuring reliability and security of the grid during contingencies,” Kandrathi explains. “Our study demonstrates that strategic BESS selection can lead to substantial improvements in system stability, which is crucial for the energy sector as it transitions towards more renewable energy sources.”
The study also involves generating both normal and abnormal operational scenarios for varying loads and renewable generation profiles to capture diverse sources of uncertainty. A comprehensive reliability planning approach is adopted to identify the worst-case scenarios and ensure network robustness by optimizing BESS operations under these conditions.
The implications of this research are far-reaching for the energy sector. As the grid continues to evolve with increasing levels of renewable generation, the ability to strategically select and deploy BESSs will be critical in maintaining system stability and reliability. This study provides a valuable framework for energy planners and operators to make informed decisions about BESS deployment, ultimately leading to a more resilient and robust power system.
Moreover, the commercial impacts of this research are substantial. By demonstrating the cost-effectiveness and viability of strategic BESS selection, the study paves the way for more investment in energy storage technologies. This can lead to job creation, economic growth, and a more sustainable energy future.
As the energy sector continues to navigate the challenges and opportunities presented by the transition to renewable energy, research like this serves as a guiding light, illuminating the path towards a more stable, reliable, and sustainable grid. The work of Kandrathi and his team is a testament to the power of innovation and strategic thinking in shaping the future of energy.