The energy sector is undergoing significant transformation due to rapid advancements in renewable energy technologies such as wind and solar power. These developments are crucial for reshaping energy infrastructure to promote sustainability by enhancing system performance, increasing economic benefits, and minimizing environmental impact. However, as power systems experience higher penetration of renewables along with power electronics, they face new challenges, including reduced resilience to disturbances, decreased system inertia, and greater unpredictability. These issues underscore critical problems regarding the frequency, voltage, and transient stability of power grids. Achieving a balance between safe, efficient, and economically viable grid operations with a significant renewable energy ratio presents a major technical hurdle—especially for the thorough integration of wind and photovoltaic systems into a sustainable energy landscape.

Current strategies for power system control and regulation employ methods such as economic dispatch, unit commitment, frequency regulation, and power system stabilizers (PSS). Nonetheless, contemporary systems require enhancements in these mechanisms to facilitate renewable energy’s active role in grid operations and stability support within sustainable frameworks. Consequently, there is an impetus to investigate novel theories and technologies, scrutinizing adjustable resource potential for more effective coordination and control. This research suggests focus areas, including AC/DC grid structuring, renewable energy's active contributions, and interaction between sources, loads, and storage units. Such studies hold theoretical and practical importance for power systems, promoting not only grid stability and economy but enabling efficient and sustainable renewable energy incorporation.

This Research Topic aims to bridge existing gaps and formulate solutions for stable and efficient power system operations amid increasing renewable integration. The primary objectives target refining frequency control and voltage stabilization methods, fostering renewable energy’s grid participation, and innovating AC/DC integration and AI applications. Exploring these aspects will address questions surrounding energy stability frameworks and forecasting techniques tailored to the dynamic nature of modern and sustainable grids.

To gather further insights on challenges in sustainable grid stability within renewable energy aggregation areas, we welcome articles addressing, but not limited to, the following themes:
• Virtual inertia and frequency control strategies for renewable energies;
• Voltage stability and control mechanisms for expansive renewable transmission systems;
• AC/DC integration techniques for significant new energy incorporation;
• Analysis of oscillation characteristics in renewable clusters;
• Coordinated control strategies to enhance stability via renewable-energy storage systems;
• Multi-time scale power prediction methodologies for emergent energy ecosystems;
• Optimized operational dynamics of virtual power plants and integrated energy storage;
• AI and new technology applications in advancing renewable energy generation;
• Life cycle assessment of sustainable energy grid technologies and systems.

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Grid Stability and Optimized Operation in Renewable Energy Grid Systems