HVDC Frequency Flexible Operation System

The patent applies local quality by providing different frequency qualities to different loads based on their specific requirements. The power grid system divides loads into multiple groups, with some loads receiving high-quality power with narrow frequency range (60Hz±0.2Hz) and other loads receiving standard-quality power with wider frequency range (60Hz±0.5Hz). This selective approach ensures that high-quality power is supplied only where necessary, reducing the overall economic cost while maintaining reliability for critical loads.

The patent implements segmentation by dividing the power grid system into multiple operational zones with different frequency quality standards. The system segments loads into different groups based on their power quality requirements and assigns them to appropriate frequency zones. This segmentation simplifies power grid management by allowing independent control of each zone's frequency characteristics, rather than requiring uniform control across the entire grid.

The patent resolves this contradiction by introducing a spatial dimension to frequency quality management. Instead of applying a single frequency standard across the entire power grid, the system creates multiple frequency quality zones that can coexist within the same physical infrastructure. This dimensional approach allows the power grid to maintain narrow frequency ranges for high-quality zones while simultaneously accommodating wider frequency variations in other zones, thereby preserving adaptability to varying demand across different regions.