High-precision voltage, frequency, and phase synchronization detection is employed to achieve seamless generator-to-grid connection. Millisecond-level synchronization judgment minimizes grid-connection impact. Combined with phase-selection control devices, the breaker closing timing is optimized to suppress switching overvoltage and extend equipment service life.

A fast, disturbance-free power transfer system is built using fast transfer devices in coordination with high-speed vacuum circuit breakers. When the main power source fails, the transfer logic is initiated within 5 ms, ensuring uninterrupted power supply to critical equipment such as boiler feedwater pumps and fans, and preventing production interruptions.

Microprocessor-based inrush current suppressors are applied to mitigate magnetizing inrush current and switching overvoltage during the energization of transformers, frequency converters, reactors, and other equipment. By leveraging the "residual flux and bias flux counteraction" technology, impact current is significantly reduced, protecting primary equipment insulation.

Smart phase-controlled circuit breakers are deeply integrated with secondary devices and combined with our self-developed online phase-selection closing analysis system, enabling remote monitoring and smart diagnostics. Coordinated with fast transfer devices, they realize "zero-voltage-dip" switching. The solution complies with GB/T 1984 and IEC 62271-100 standards and is well suited for high-temperature and high-humidity thermal power plant environments.