Based on the characteristic methods,a transient process model of the system was established for a hydro-power station with two large units and two small units arranged in one tunnel and four units.The load rejection condi-tion of the system was simulated,and the influence of the Guide vane closing law of one straight line and two broken lines on the transient process was studied and analyzed.The results show that the longer the straight line closing rule time,the longer the first closing time,the longer the break point opening time and the longer the second closing time,the smaller the maximum pressure of the volute and the higher the increase rate of the maximum speed of the unit.In-creasing the moment of inertia is beneficial to improve the parameters of transient process,and the extreme values of tran-sition process of large and small units can be made close by adjusting the moment of inertia of large and small units.
关键词
水电站/导叶关闭规律/过渡过程/转动惯量
Key words
hydropower station/guide vane closing law/transient process/moment of inertia
维普
万方数据