In the dynamic world of energy distribution, a novel approach to managing grid-connected operations has emerged, promising to enhance reliability, balance loads, and improve fault response. Researchers, led by Yuechao Ma from the Inner Mongolia Power Research Institute, have developed a coordination control strategy that leverages energy storage and flexible multi-state switches (FMSS) to tackle these challenges head-on.
The new distribution network, equipped with energy storage and FMSS, faces several hurdles, including feeder load imbalances and faults. Ma and his team have devised a strategy that divides the system’s operational state into multiple working modes, considering factors like system operation states, fault feeder positions, transformer working states, and battery state of charge. This granular approach allows for targeted control objectives and strategies tailored to each working mode.
One of the standout features of this strategy is its ability to address phase asynchrony among fault loads and normal working loads. By employing off-grid phase-locked control based on the V/f control strategy, the system can maintain synchronization even during faults. Additionally, the strategy includes a designed switching control sequence for planned off-grid situations and a power feed-forward control strategy for the battery during unplanned off-grid events. These measures help mitigate bus voltage fluctuations caused by feeder fault switching.
The simulation results are promising, demonstrating that the proposed control strategy ensures system power balance and provides a high-quality flexible power supply during grid-connected operations. “The strategy not only boosts the system’s operational reliability and load balance but also extends the power supply time for fault loads,” Ma explained. This innovation could significantly impact the energy sector by enhancing grid stability and efficiency.
The research, published in the journal Energies, highlights the potential for advanced control strategies to revolutionize energy distribution networks. As the energy sector continues to evolve, such innovations are crucial for meeting the growing demand for reliable and efficient power supply. The work by Ma and his team offers a glimpse into the future of energy distribution, where intelligent control strategies and advanced technologies work in tandem to create a more resilient and adaptable grid.
This research could pave the way for future developments in smart grid technologies, offering a blueprint for integrating energy storage and flexible switches to optimize grid performance. As the energy landscape continues to shift, the insights from this study will be invaluable for energy providers and researchers alike, driving the industry towards a more sustainable and efficient future.