Research on Self-Optimization Group Control Method of Fan for Mechanical Draft Cooling Tower
Mechanical draft cooling towers are widely used in small and medium-sized infrastructural projects with the significant advantage of small footprint.To enhance the energy-saving and reliability of the external cooling system of small and medium-size infrastructural projects and improve the traditional multi-fan control method,a self-optimization group control method of fan for mechanical draft cooling tower based on the cumulative running time is innovatively proposed.It improves the integral control of multi-fan into sequential linkage control,effectively reduces the starting threshold output of fans,eliminates the inherent defects of integral control,and meets the energy-saving and reliable requirements of nonlinear,time-varying,and large-lag system control.Verified by the project:this method is a multi-fan control method suitable for pure frequency conversion motor configuration cooling tower system.This method has soft fan output,good control linearity,easy system calibration,and small steady state deviation;can realize automatic fan interaction operation through cumulative running time parameter comparison and has high operational reliability.The proposed and practical application of this method can provide reference for the safe and energy-saving operation of small and medium-sized infrastructural projects configured with mechanical draft cooling tower.
Mechanical draft cooling towerFanSelf-optimization group controlInteractive operationSequential controlThreshold output
万方数据
维普
