变频驱动游梁有杆泵系统仿真与频率优化研究  

Simulation and Frequency Optimization Research of Variable Frequency Driven Beam Pump System

作　　者：张传新 姚金杭 孔有为 褚浩元 檀朝东[2,3] 冯子明 冯钢 Zhang Chuanxin;Yao Jinhang;Kong Youwei;Chu Haoyuan;Tan Chaodong;Feng Ziming;Feng Gang(Research Institute of Engineering Technology,PetroChina Xinjiang Oilfield Company;College of Petroleum Engineering,China University of Petroleum(Beijing);College of Information Science and Engineering,China University of Petroleum(Beijing);School of Mechanical and Electrical Engineering,Wenzhou University;Xi'an Supcon World Technology Development Co.,Ltd.)

机构地区：[1]新疆油田分公司工程技术研究院 [2]中国石油大学(北京)石油工程学院 [3]中国石油大学(北京)人工智能学院 [4]温州大学机电工程学院 [5]西安中控天地科技开发有限公司

出　　处：《石油机械》2025年第1期98-105,共8页China Petroleum Machinery

基　　金：国家自然科学基金项目“基于大数据解析的大规模非集输油井群生产及拉运调度协同优化”(51974327);国家自然科学基金项目“变速驱机-杆-泵全耦合动力学行为及优化运行节能机理研究”(51774091);中国博士后科学基金项目“杆管液三维耦合振动力学行为及变速降载运行机制研究”(2018T110268)。

摘　　要：针对电机匀速驱动游梁抽油机运行过程中周期性交变载荷变化大、系统能耗高及故障多的问题,分析了电机变频驱动对抽油机运动规律、悬点载荷、变速箱扭矩及电机功率的影响,建立了变频控制抽油系统动态能耗的仿真模型。以电机输出功率均方根最小、输出功率峰值最小和负发电最小为目标函数,综合考虑平均频率不变、上下冲程时间分配、频率范围等约束条件,建立了周期运行频率优化设计的数学模型,并采用粒子群优化算法求解周期频率分布函数的傅里叶系数,即周期运行频率分布。实例分析表明:优化实时频率可以显著改善抽油机的动力性能,悬点载荷、曲柄扭矩和输出功率的峰值均有所降低;电机平均输出功率降低16.2%,负发电减少14.77%,节能效果显著。所得结果可为变频驱动游梁有杆泵系统的设计及应用提供参考。A beam pumping unit driven by a motor at a constant speed features greatly varying cyclic alternating load,high energy consumption and frequent failures during operation.In this paper,the motion behavior,load at the suspension point,gearbox torque and motor power of the pumping unit driven by a motor at variable frequency were investigated,and a simulation model for dynamic energy consumption of the variable frequency controlled pumping system was built.Taking the minimum root mean square of output power,minimum peak output power and minimum negative power generation of the motor as the objective functions,and considering the constraints such as constant average frequency,time share of up-down stroke and frequency range,a mathematical model for optimizing the cyclic operating frequency was built.In addition,the particle swarm optimization(PSO)algorithm was used to solve the Fourier coefficient of the cyclic frequency distribution function,that is,the cyclic operating frequency distribution.Case analysis shows that optimizing real-time frequency can significantly improve the power performance of the pumping unit.The peak values of polished rod load,crank torque and output power all reduce to some extent.The average output power of the motor decreases by 16.2%,and the negative power generation decreases by 14.77%,indicating a remarkable energy saving effect.The research results provide reference for the design and application of variable frequency driven beam pump systems.

关 键 词：游梁抽油机井 动态能耗仿真 频率分布 悬点 粒子群算法 

分 类 号：TE28[石油与天然气工程—油气井工程]