水轮机调速器参数对调压室稳定断面积的影响研究

水电站调压室的稳定断面积一般是按照著名的托马准则来确定的.托马稳定断面积计算公式是在多种佩定务件下简化得到的,对于中低水头电站的调压室来说,托马稳定断面积往往较大.通过工程实例采用非线性数学模型研究了水轮机调速嚣参数对调压室水位波动稳定性的影响,提出了调压室水位波动稳定性的品质指标,论证了调压室可以采用小于托马公式计算的断面积.

Study on the influence of the parameter of turbine governor to stable sectional area of surge tank

The stable sectional area of surge tank is usually designed according to the famous Thoma criterion.Its formula is educed under many hypotheses.However,for the hydropower stations of low delivery head,the cross-sectional area of chamber tends to be lager than that of other types.Joining an engineering example,the effect of the parameter of governor on stable sectional area of surge tank has been analyzed by using the nonlinear mathematical model,a quality index of the water level fluctuation in surge tank is put forward,and a smaller sectional area can be used to surge tank is proved.