水轮发电机组具有起动方便、运转灵活、速动性高等优点,是电力系统最可靠的负荷备用和事故备用机组,义不容辞地担负了系统的调峰任务。对此,人们的认识是明确的。可是,机组调峰时负荷变化太大对汽蚀磨损的影响在调度中几乎被忽略了。黄河上的电站,由于汛期泥沙多,工况改变引起转 Hydrogenerator has the advantages of easy start-up, flexible operation and fast speed. It is the most reliable load backup and accident backup unit in power system, and it is incumbent on the system to carry out peak load adjustment task. In this regard, people’s understanding is clear. However, the impact of the load change during the peaking process on the cavitation wear is almost neglected in the schedule. Power plants on the Yellow River, due to flood season mud and more conditions change caused