Recent research published in the Journal of Engineering and Applied Science has introduced a novel hierarchical frequency stability control strategy aimed at improving the reliability of power grids increasingly reliant on distributed energy resources (DERs). As traditional synchronous generators are phased out in favor of renewable sources like wind and solar, the inherent inertia and frequency regulation capabilities of the power system are compromised, raising concerns about frequency stability.
The study, led by Guofeng Lan from the Lvliang Power Supply Company of State Grid Shanxi Electric Power Company, addresses these challenges by proposing a coordinated control strategy for distributed wind turbines (WTs) and photovoltaic (PV) systems. The researchers focused on optimizing frequency regulation through a method that minimizes energy consumption while adhering to transient and steady-state frequency constraints.
One of the key innovations in this research is the application of the Alternating Direction Method of Multipliers (ADMM) combined with Model Predictive Control (MPC). This approach allows for more efficient computation and optimal allocation of frequency regulation power among multiple WTs and PVs. “By determining the optimal frequency regulation coefficients, we can enhance both the transient and steady-state frequency stability of the power system,” Lan noted.
The implications of this research are significant for various sectors. As the energy landscape shifts toward greater integration of renewable resources, utilities and energy providers will need to adopt advanced control strategies to maintain grid stability. This presents commercial opportunities for companies specializing in power electronics, energy management systems, and smart grid technologies.
Furthermore, this research could lead to improved operational efficiencies and reduced costs for renewable energy operators, making it a compelling proposition for investors and stakeholders in the clean energy sector. The findings from this study not only highlight the importance of innovative control strategies in modern power systems but also underscore the potential for enhanced frequency stability in a future dominated by distributed energy resources.
