Researchers from RWTH Aachen University, Forschungszentrum Jülich, and other institutions have identified a potential risk to grid stability as power systems evolve. Their study, published in Nature Communications, focuses on the impact of battery control systems on grid frequency stability.
Electric power systems are changing rapidly, with a shift towards inverter-based generation and increased digitalization. These changes, while beneficial in many ways, also introduce new challenges and vulnerabilities. The researchers have discovered a persistent one-minute oscillatory pattern in grid frequency time series worldwide, which they attribute to the energy management systems of battery electric storage systems.
The study reveals that this oscillatory pattern has been increasing in amplitude in the Nordic and British grids. This effect could pose a burden on stability in future grids, which are expected to have lower inertia and a higher penetration of batteries and smart devices. However, the researchers suggest that this issue can be mitigated by revising battery control algorithms.
The findings highlight the importance of understanding and managing the interactions between cyber and physical systems in the energy sector. As grids become more complex and interconnected, ensuring stability and resilience will be crucial for maintaining reliable power supply. The researchers’ work provides valuable insights into the challenges and potential solutions for managing these evolving systems.
The research was published in the journal Nature Communications, providing a platform for further discussion and exploration of these critical issues in energy systems.
This article is based on research available at arXiv.