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论证了在抽汲过程中,通过改变电机速度可以增加机抽井的产液量、减小抽油杆柱应力和降低系统能耗。通过建立电机速度的傅立叶级数,寻找符合限制条件下的傅立叶系数,最后得到最优化的电机速度分布剖面图。应用最优化设计的电机速度结果,通过变频调速(VFD)装置对电机速度进行控制,在不增加系统载荷和能耗的情况下,井A和井B的产液量分别增加了133%和40%。
It is demonstrated that during the pumping process, the output of the pumping well can be increased by changing the motor speed, the stress of the sucker rod column can be reduced, and the energy consumption of the system can be reduced. By establishing the Fourier series of the motor speed, looking for the Fourier coefficients that meet the constraints, and finally get the optimized motor speed distribution profile. Using the optimally designed motor speed results, the motor speed was controlled by a variable-frequency-variable-speed (VFD) device that increased fluid production by well 133% and well B respectively without increasing system load and energy consumption 40%.