In a significant advancement for energy security in high-demand regions, researchers have unveiled a novel energy storage planning method designed to enhance the reliability of receiving-end systems. This innovative approach is particularly crucial for areas in China where centralized feeds from large-capacity High Voltage Direct Current (HVDC) links are becoming increasingly challenged by issues such as dynamic reactive power shortages and commutation failures.
Haibo Zhang, the lead author from the State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources at North China Electric Power University, emphasizes the transformative potential of electrochemical energy storage (ES). “With its robust capabilities for dynamic active and reactive power regulation, ES can serve as a critical resource in bolstering the security of our energy systems,” Zhang stated. This research addresses the pressing need for effective energy storage solutions that can adapt to the complexities of modern energy demands.
The study categorizes energy storage systems based on their control modes into grid-following (GFL) and grid-forming (GFM) types, introducing a multi-infeed short circuit ratio (MISCR) as a key metric in the planning model. By optimizing this ratio, the team aims to enhance the operational stability of receiving-end systems, which are vital for the overall efficiency of energy distribution networks.
A noteworthy aspect of this research is the proposed method of “accompanying network + model reconstruction,” which facilitates the linearization of the MISCR for more straightforward calculations. This innovation not only streamlines the planning process but also integrates economic considerations by allowing energy storage systems to engage in peak shaving during normal operations. Such flexibility is expected to significantly reduce operational costs and improve the return on investment for energy storage technologies.
The implications of this research extend beyond theoretical frameworks; they resonate deeply within the commercial energy sector. As energy providers seek to enhance grid reliability and efficiency, the integration of advanced energy storage solutions could lead to substantial cost savings and improved service delivery. Zhang’s findings could pave the way for more resilient energy infrastructures, particularly in regions facing high load densities.
The effectiveness of the proposed planning method has been validated through simulations on a modified IEEE-39 system, showcasing its practical applicability. As the energy landscape continues to evolve with increasing reliance on renewable sources, innovative strategies like this one will be essential in ensuring a stable and secure power supply.
This research, published in the International Journal of Electrical Power & Energy Systems, underscores the critical role of energy storage in modern power systems. It not only highlights the need for advanced planning methodologies but also sets the stage for future developments that could redefine energy management practices worldwide. For more insights, you can visit the lead_author_affiliation.
