The integration of renewable energy sources, particularly wind power, into the power grid has been a double-edged sword for energy systems worldwide. While wind energy contributes to sustainability goals, its variability has posed challenges for grid stability, especially in frequency regulation. A recent study published in ‘发电技术’ (Power Generation Technology) sheds light on how energy storage systems (ESS) can enhance frequency response in the face of these challenges.
The research, led by ZHANG Chong from the State Grid Tianjin Electric Power Company Binhai Power Supply Branch, reveals a novel approach to optimizing the control parameters of ESS through adaptive adjustment based on wind conditions. “The large-scale penetration of wind power has reduced the frequency regulation capability of the power system to a certain extent,” ZHANG explains. The study utilizes simulation software DIgSILENT/PowerFactory to model the interaction between ESS and typical power systems, demonstrating how effective configuration can mitigate frequency fluctuations.
One of the key findings is that by intelligently reserving capacity from wind turbines and adjusting the ESS frequency regulation coefficient according to wind speed, the system can significantly enhance its frequency response. This means that as wind conditions change, the ESS can adaptively support the grid, reducing the need for wind curtailment. “Our self-adaptive adjustment method can effectively reduce the overshoot and optimize the output power of the ESS while still meeting frequency regulation requirements,” ZHANG notes.
The implications of this research are substantial for the energy sector. As countries strive for carbon neutrality, the demand for reliable and efficient integration of renewable energy sources will only grow. The ability to maintain grid stability with a high penetration of wind energy not only supports regulatory compliance but also opens up new commercial opportunities for energy producers and storage providers. By maximizing the use of wind energy and minimizing waste, utilities can enhance profitability while contributing to sustainability goals.
As the energy landscape evolves, this adaptive approach to frequency regulation could set a precedent for future developments in energy storage technology. With the right investment and implementation, energy storage systems could become pivotal in creating a more resilient and flexible power grid, ultimately leading to a cleaner and more sustainable energy future.
For more insights from ZHANG Chong and his team, you can explore their work further at the State Grid Tianjin Electric Power Company Binhai Power Supply Branch’s website: lead_author_affiliation.
