Tripping transients in a complex pumping system with multi pumps in parallel

The paper reports the analysis and application of a large scale pumping station with complex machinery, electrical, and hydraulic systems. The interaction between the pump system and transient flow in case of a sudden tripping of power to the system was investigated by numerically solving governing equations of multi pumps in parallel operation. The transient flow in the hydraulic system and the dynamics of the pumps, for example, oscillation of the surge tank, water hammer wave propagation, dynamical fluid torque acting on the pump impeller, and dynamical pump speed, were obtained on the complete pump model. Results obtained with the present approach show a promising reference for operation of a large scale pumping station with complex system in undulating case due to a sudden power tripping.