抽水蓄能电站机组转动惯量GD^2敏感性分析

An Analysis of the Pumped-storage Power Station Unit Moment of Inertia of GD^2 Sensitivity

机组转动惯量GD2的不同取值对调节保证参数的影响较大。以某抽水蓄能电站为例,通过水力过渡过程仿真计算,对该水电站机组导叶关闭规律进行了优化处理,在最优导叶关闭规律的基础上研究不同机组GD2取值对机组最大转速上升率、蜗壳进口最大内水压力和尾水管进口最小内水压力的影响,得到了机组GD2与机组最大转速上升率、蜗壳进口最大内水压力和尾水管进口最小内水压力之间的关系,并进一步验证了该水电站机组GD2初步设计值的合理性。

A pumped storage power station in Hebei is used as an example ,by hydraulic transition process simulation calculation ,the guide vane closure rule of unit in the hydropower station optimization ,on the basis of the optimal law of guide vane closure ,we study different GD2 of unit value ,a unit for maximum speed and draft tube inlet volute import maximum internal water pressure ,the influ‐ence of minimum internal water pressure to get the maximum rotational speed rate of climb ,GD2 of unit and the unit and draft tube inlet volute import maximum internal water pressure ,the relationship between the minimum internal water pressure and further the hydropower unit GD2 preliminary is verified .