As the global energy landscape shifts towards renewable sources, the integration of wind power presents both opportunities and challenges. A recent study led by Liu Hongbo from the State Key Laboratory of Modern Power System Simulation and Control & Renewable Energy Technology at Northeast Electric Power University sheds light on a critical aspect of this transition: the role of energy storage systems (ESS) in enhancing the stability of power grids with high wind power penetration.
Wind energy, while abundant and clean, can create volatility in power systems due to its variable nature. As Liu explains, “The high proportion of wind power can weaken the inertia and frequency regulation capacity of the power system, making it essential to find solutions that ensure stability.” The study focuses on the doubly fed induction generator (DFIG), a common technology used in wind turbines, which can be optimized to participate more effectively in frequency modulation.
The research proposes a coordinated frequency modulation method that integrates the DFIG with ESS, specifically under conditions where rotor overspeed control is a concern. By analyzing the active power output of the ESS and its steady-state recovery process, the team has developed a control strategy that mimics the behavior of a virtual synchronous machine. This approach not only smooths the output from the ESS but also enhances the frequency support capability of the overall system.
The implications of these findings are significant for the energy sector. With the ability to optimize the configuration of ESS parameters based on varying operational conditions, grid operators can improve reliability and efficiency. “Our method allows for a more resilient power grid, capable of handling the fluctuations from wind energy, while ensuring that frequency modulation requirements are met,” Liu noted. This advancement could lead to a broader acceptance of wind energy, driving investments and innovations in energy storage technologies.
The study, published in ‘发电技术’ (Power Generation Technology), highlights the potential for commercial applications that could reshape how energy systems are designed and operated. As countries aim for ambitious renewable energy targets, the ability to effectively integrate wind power with robust energy storage solutions will be crucial. The research not only paves the way for a more stable grid but also positions energy storage as a vital component in the transition to a sustainable energy future.
For more information about Liu Hongbo’s work, you can visit the State Key Laboratory of Modern Power System Simulation and Control & Renewable Energy Technology.
