核电应急柴油发电机组滑油低压保护停机控制的设计优化

通过采用转速分段及增加短延时的改进方法，对当前核电应急柴油发电机组滑油低压保护停机控制设计进行了优化。经论证与试验表明:优化后的保护停机控制对机组起动及运行过程均起到了保护作用，同时确保了滑油压力的正常建立，避免了机组因受外部因素影响导致应急保护停机误动作，提高了机组起动的可靠性。该优化方案已经在核电厂应急柴油发电机组控制系统中得到广泛应用。

The Design Optimization of the Lube Oil Low Pressure Emergency ProtectionStop Control for Nuclear Power Plant Emergency Diesel Generator Sets

The method of speed segmentation and increasing short delay was adopted to optimize the design of the lube oil low pressure protection stop control for the nuclear power plant emergency diesel gensets. The verification and test show that the optimized control system can protect both the start-up and operation of the gensets, and ensure the proper lube oil pressure, avoid the malfunction of emergency protection stop caused by external factors, thus can improve the reliability of gensets start-up. This optimization scheme has been widely applied in control system of the nuclear power plant emergency diesel gensets.