Utilizes high-precision voltage, frequency, and phase synchronization detection to achieve seamless generator-to-grid connection, supporting millisecond-level synchronism verification to reduce grid-connection impact. Combined with phase-selection control devices, it optimizes breaker closing timing, suppresses switching overvoltage, and extends equipment service life.

Based on high-speed, disturbance-free transfer devices and high-speed vacuum circuit breakers, the system provides rapid auxiliary power switching. In the event of main power failure, transfer logic is initiated within 5 ms to ensure continuous supply to critical equipment (such as boiler feedwater pumps and fans), avoiding production interruptions.

Employs microprocessor-based inrush current suppressors to address magnetizing inrush and switching overvoltage during energization of transformers, converters, and reactors. By applying “residual flux and offset flux cancellation” technology, it reduces inrush current and protects primary equipment insulation integrity.

Intelligent phase-control circuit breakers are deeply integrated with secondary devices, combined with our proprietary online phase-selection reclosing analysis system. This supports remote monitoring and intelligent diagnostics. Working in coordination with fast transfer devices, it achieves “zero-voltage-dip” switching, complies with GB/T 1984 and IEC 62271‑100 standards, and is designed to withstand the high-temperature, high-humidity environments typical of thermal power plants.