Automatic Control of Discharge Flow Rate of Water Plant Pumps Considering Inlet Rate
In order to solve the problem of large fluctuations in the discharge flow rate of water plant pumps,a con-trol strategy based on adaptive adjustment rate was adopted.Firstly,by constructing an adaptive rate adjustment mod-ule structure,the difference between the pump outlet pressure and the surrounding pressure of the pipeline is moni-tored to adjust the inlet rate and suppress significant fluctuations in water flow.Secondly,considering parameters such as target drainage flow rate,actual drainage amount,and pump leakage,a compensation control strategy is introduced to establish a mathematical model of the water plant pump.Finally,in order to further optimize the control perfor-mance of the pump,predictive control algorithms are introduced into the mathematical model of the water plant pump,and the input values are expressed using predictive functions and orthogonal basis functions.The error compen-sation is obtained by calculating the error between the optimal operating water level and the output value.Using the calculated drainage flow reference output value,a quadratic optimization performance index is introduced for rolling optimization to achieve automatic control and optimization adjustment of the drainage flow of the water plant pump.After experimental verification,the fluctuation of drainage flow has been significantly improved.Control the energy consumption to vary between 40.15 kW·h and 48.95 kW·h,and when the pump machine in the water plant experi-ences variable load conditions,the time to return to stable state is relatively short.This indicates that the automatic control effect of the drainage flow of the water plant pump has been significantly improved.
water plant pumpadaptive rate controlspeed compensationdisturbance suppressionworking condition mutation
万方数据
维普
