【摘要】 针对水电站水力过渡过程建模与仿真的复杂性,提出了采用传递函数建模和运用Matlab的S-function相结合的综合仿真方法.通过对弹性水锤波动方程中流量符号的处理,推导出适合大、小波动工况的引水系统S域表达式,并运用Matlab的S-function加以实现.在大波动时,将水轮发电机组用线性插值的S-function代替.结果表明该仿真方法十分有效和可靠.更多还原

【Abstract】 In light of the complexity of transient modeling and simulation for hydropower stations,a synthetic simulation method combining a transfer function and Matlab S-function, has been put forward.A hydraulic transient expression which adapts to big and small fluctuation conditions in S domain has been deduced through dealing with direction of the water stream variant in elastic water hammer wave expression; and it is realized by using the S-function of Matlab Language. While in large surge state,we could use the linear insert value function which has been realized with S-function of Matlab Language instead of the performance of hydro-turbine generator. The model proposed is not only clear in physical meaning but also simple and reliable in structure.The experiment and simulation result shows this method is efficient and reliable.更多还原