The system adopts a dual-redundant control architecture with two fully independent control units, ensuring continuous and reliable operation even in the event of a single-point failure. It delivers high-precision synchronization performance with frequency accuracy of ±0.01 Hz, phase angle accuracy of ±0.5°, and voltage deviation within ±1%, fully meeting the stringent grid-connection requirements of nuclear power plants. Supporting rapid synchronization of multiple generator units, the solution achieves a first closing success rate exceeding 99.9%, effectively reducing grid-connection impact and extending equipment service life.

Upon detection of a main power supply failure, the system initiates transfer logic within 5 ms and cooperates with high-speed vacuum circuit breakers to complete the entire switching process within 20 ms. This millisecond-level seamless transfer capability ensures uninterrupted power supply to critical loads. The solution is specifically designed to protect essential nuclear safety systems—such as reactor cooling systems and emergency boron injection pumps—preventing power interruptions that could lead to core damage or radioactive leakage risks.

By applying the proprietary residual-flux and bias-flux cancellation technology, the system effectively suppresses magnetizing inrush current and operational overvoltage during the switching of transformers and capacitor banks, preventing protection malfunctions. In addition, phase-selection control optimizes circuit breaker closing instants, significantly reducing the risk of arc re-ignition and safeguarding sensitive nuclear island equipment, thereby extending overall equipment lifespan.

Designed to withstand high-temperature, high-humidity, and high-radiation operating conditions, the solution ensures long-term stable performance in the demanding environments of nuclear power plants. Integrated smart monitoring and diagnostic functions enable real-time condition awareness and remote operation support, improving maintenance efficiency while reducing manual intervention and operational risk.