摘要
采用特征线法 ,对葛洲坝电站水轮机增容改造甩负荷过渡过程进行了计算 ,给出了蜗壳最大压力及机组最大速率上升的数值。特征线法的原理是将流体运动方程和连续性方程转化为四个全微分方程 ,然后求解 ,计算精度较高。
The hydraulic transient calculation for rejecting load is carried out adopting explicit characteristics method. The maximum pressure taking place in spiral case and the unit maximum speed rise are given also. The principle of explicit characteristics method is transforming hydraulic dynamics equations and mass conservation equations into four total differential equations,and then resolving the equations. The explicit characteristics method is more accurate than traditional calculation method.
出处
《大电机技术》
北大核心
2004年第6期48-51,共4页
Large Electric Machine and Hydraulic Turbine
