600MW超临界直流机组一次调频性能优化

对汕尾电厂600MW超临界直流机组一次调频控制方案进行分析，设计了CCS侧的压力补偿网路及DEH侧调频校正量的主汽压力修正回路，形成了完善的一次调频控制方案，解决了一次调频动作时机前压力扰动过大、低负荷时调频电量少的问题。试验结果表明优化后有效提高了机维一次调频能力及安全稳定运行水平。

Performance Optimization on Primary Frequency Regulation of 600MW Supercritical Once-through Unit

Based on the analysis of primary frequency regulation for Shanwei 600MW Supercritical Power Plant Units, we design the pressure compensation circuit in coordinated control system(CCS), as well as themain steam pressure correction circuit in digital electro-hydraulic control system(DEH). By using our primary frequency regulation control scheme, the problems such as too large disturbance of main steam pressure, lower frequency power at low Load time were addressed. The test results show that the primary frequency capacity and the level of security and stability were increased after optimization.