对于运行电站来说,水轮机的空蚀是一个长期存在的大问题。水轮机发生空蚀以后,一方面要花费大量的时间进行修复,而且由于技术工人的工时费用提高和焊接材料的价格上涨,使修复工作的费用变得更加昂贵;另一方面,由于在修复期间机组不能投入运行,降低了系统的储备容量,因而对系统的稳定性极为不利。 Cavitation erosion of a turbine is a long-standing problem for operating power plants. After cavitation of the turbine, on the one hand, it takes a lot of time to repair it, and the cost of repair work becomes more expensive due to the increase of the man-hour cost of skilled workers and the price of welding materials; on the other hand, Can not be put into operation, reducing the system’s reserve capacity, thus the stability of the system is extremely unfavorable.