中国机械工程2016，Vol.27Issue(12)：1585-1590,6.DOI:10.3969/j.issn.1004-132X.2016.12.005
变频游梁式抽油系统动态仿真与实时频率优化
Frequency Conversion Beam Pumping System Dynamic Simulation and Real Time Frequency Optimization
摘要
Abstract
A dynamic parameter simulation model of beam pumping system with frequency con—version control was established,considering effects of real time frequency variation on motion law of suspension points,longitudinal vibrations of sucker rod,polished rod loads,ground device node torques and powers.By transforming the real time frequency function into the Fourier series,and tak—ing the Fourier coefficients as design variables,an optimization mathematical models of the real time frequency function was setup,where the minimum root mean square of motor output power was taken as optimization obj ective function,and some constraints were considered,including constant strokes per minute,the ratio between the upstroke time and down stroke time,and real time frequency varies within the given bounds.Simulation and optimization results show that:simulation accuracy is high and can meet the demands of proj ect applications;dynamics performance of beam pumping unit is im—proved significantly after real time frequency optimization,suspension point load fluctuation is re—duced,maximum torque of crank shaft and torque fluctuation amplitudes are reduced significantly, motor output power amplitudes and fluctuation are reduced significantly and power utilization is im—proved,active power saving rate is as 2 5 .8%.关键词
游梁式抽油系统/变频控制/动态仿真/实时频率/优化设计Key words
beam pumping system/frequency conversion/dynamic simulation/real-time frequen-cy/optimization design分类
能源科技引用本文复制引用
董世民,李伟成,赵晓芳,赵然..变频游梁式抽油系统动态仿真与实时频率优化[J].中国机械工程,2016,27(12):1585-1590,6.基金项目
国家自然科学基金资助项目(50974108,51174175) （50974108,51174175）
