In a significant advancement for the renewable energy sector, researchers have unveiled a novel approach to enhance frequency support in hybrid wind farms that utilize both grid-forming and grid-following wind turbines. This breakthrough, led by Qihang Zong from the State Key Laboratory of Advanced Electromagnetic Engineering and Technology at the Huazhong University of Science and Technology, addresses a critical challenge faced by wind energy systems—stability in the face of fluctuating grid conditions.
As the adoption of renewable energy sources like wind power continues to surge, the stability of these systems becomes increasingly vital. Traditional grid-following wind turbines (GFL-WTs) are prone to oscillations, especially when integrated into weaker grids. Zong’s research proposes a hierarchical optimal frequency support (HOFS) scheme that aims to optimize the frequency support capabilities of wind farms. This innovative framework not only enhances stability but also ensures that wind energy can be harnessed more effectively, even under challenging conditions.
“The duality consistency we discovered between grid-forming and grid-following turbines allows us to optimize frequency support in a way that was not previously possible,” Zong explained. This duality reveals that, under certain conditions, both types of turbines can provide consistent frequency support, thereby improving overall system reliability.
The HOFS scheme operates on two levels: the first focuses on the optimal control of individual wind turbines, while the second coordinates the actions of multiple turbines. This layered approach is particularly beneficial in high wind scenarios, where power limitations can lead to additional frequency drops. By mitigating these issues, the research promises to enhance the operational efficiency of wind farms, ultimately leading to more reliable energy delivery.
This research holds substantial commercial implications. As energy markets increasingly prioritize stability and reliability, the ability to effectively manage frequency support will be a game-changer for wind farm operators. Enhanced stability not only improves the integration of wind energy into existing grids but also boosts investor confidence in renewable technologies, paving the way for further investments in green energy infrastructure.
The findings were published in the ‘International Journal of Electrical Power & Energy Systems’, a journal dedicated to advancing the field of electrical power systems. As the energy landscape continues to evolve, Zong’s work represents a critical step towards a more resilient and sustainable future in wind energy.
For more information on this groundbreaking research, you can visit the State Key Laboratory of Advanced Electromagnetic Engineering and Technology.
