In the rapidly evolving energy landscape, where renewable sources are increasingly integrated into power grids, a novel approach to managing grid stability has emerged, promising to address one of the sector’s most pressing challenges: inertia deficiency. Researchers, led by Thongchart Kerdphol from the Department of Electrical Engineering at Kasetsart University in Bangkok, Thailand, have proposed a innovative solution that leverages existing infrastructure to enhance inertia sharing across multi-area power systems.
The study, published in the English-language journal “IEEE Open Access Journal of Power and Energy,” introduces a supplementary power modulation controller (SPMC) that dynamically adjusts the reactance of thyristor-controlled series capacitors (TCSC) based on frequency and tie-line power deviations. This approach facilitates coordinated inertia transfer from areas with ample inertia to those lacking it, a critical need as traditional power plants are increasingly replaced by variable renewable energy sources.
“Our method utilizes existing transmission infrastructure, thereby reducing implementation complexity and cost,” Kerdphol explained. Unlike conventional strategies that rely on deploying additional energy storage systems or distributed virtual inertia units, the proposed SPMC-based TCSC control offers a more cost-effective and scalable solution.
The research demonstrates that the proposed control strategy improves transient frequency stability, enhances damping, and increases the efficiency of inertia sharing, even under network congestion and delay conditions. These findings are particularly relevant for renewable-rich, interconnected power grids, where maintaining stability is a growing concern.
The commercial implications of this research are significant. By enhancing the inertia-sharing capability of power grids, the proposed method can help integrate more renewable energy sources without compromising grid stability. This is crucial for energy providers aiming to meet renewable energy targets and reduce carbon emissions.
Moreover, the approach’s reliance on existing infrastructure means that energy companies can implement it without substantial additional investments in new technologies or systems. This cost-effectiveness could accelerate the adoption of renewable energy and contribute to a more sustainable energy future.
The study’s findings also highlight the potential for future developments in grid control technologies. As power systems become more complex and decentralized, innovative solutions like the SPMC-based TCSC control will be essential for maintaining grid stability and reliability.
In the words of Kerdphol, “Our research opens up new possibilities for enhancing the dynamic performance of interconnected power grids, paving the way for a more stable and sustainable energy future.” As the energy sector continues to evolve, such advancements will be crucial in shaping the future of power generation and distribution.