Rapid Soft Re-Switching Strategy of Intermittent Supply for Energy Saving in Beam Pumping Motor System with Dynamic Load Condition

Zhao, Haisen; Wang, Yilong; Zhan, Yang; Xu, Guorui; Cui, Xueshen

doi:10.1109/ias.2018.8544553

Cited by 3 publications

(4 citation statements)

References 12 publications

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“…The motor only has no-load losses. According to analysis in [12], there is no driving torque, and the crank speed can be expressed as.…”

Section: A Frequency Control In Generation Modementioning

confidence: 99%

“…Due to the periodic load change, the corresponding frequency regulation is also characterized as periodic. The periodical real-time function of frequency, f(t), can be expressed by Fourier series [12], [16].…”

Section: Frequency Determinationmentioning

confidence: 99%

“…In this respect, for lowproduction wells, some methods can be used to improve system efficiency, such as variable frequency drive [2]- [4], linear motor [5], multi-speed motor [6], automatic stroke regulation [7], intermittent pumping [8], etc. Furthermore, energy saving technologies without changing running states generally include high-slip motors [9], intermittent supply control [10]- [12], voltage regulation [13], dynamic balance adjustment [14] and reactive power compensation [15], etc.…”

Section: Introductionmentioning

confidence: 99%

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Auto-Tracking Frequency Regulation Based Energy Saving Technology for Motor Systems With Dynamic and Potential Energy Load

et al. 2021

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Beam pumping motor system (BPMS) is a typical periodic potential energy load which is affected by factors such as down-hole load, mechanical transmission and geological structure. During a running stroke, the power fluctuates in a large range and multiple operating conditions where potential energy, electrical energy and kinetic energy are converted to one another and thus leads to lower system efficiency. For this type of load, a four-quadrant inverter is an effective method to improve the efficiency of the motor system. However, in practice, the two-quadrant variable frequency control is widely used due to its lower cost. The drawback of this control is the difficulty in realizing efficient conversion and utilization of electrical energy under the power generation mode, since the generated electrical energy is converted into thermal energy by the installed resistance brake control in the inverter, which causes additional energy consumption. To resolve this engineering problem, this paper systematically studies the influence of frequency regulation on the load torque of BPMS, an automatic tracking frequency regulation method which is suitable for the controllable conversion between the different energy forms and the fluctuation power smoothing under dynamic load conditions is proposed. This method can effectively avoid high energy consumption under power generation conditions and achieve significant energy saving effect. The correctness and practicability of the proposed method are verified by the simulations and experiments of a standard oil well. The results show that, in comparison to the traditional two-quadrant inverter, the proposed method can reduce the active power fluctuation of the system by about 20% under the premise of still using a two-quadrant inverter, and the power saving ratio is increased by more than 10%.INDEX TERMS Beam pumping motor systems (BPMSs), Dynamic and potential load condition, frequency regulation, inverter, energy saving.

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“…The motor only has no-load losses. According to analysis in [12], there is no driving torque, and the crank speed can be expressed as.…”

Section: A Frequency Control In Generation Modementioning

confidence: 99%

Section: Frequency Determinationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Auto-Tracking Frequency Regulation Based Energy Saving Technology for Motor Systems With Dynamic and Potential Energy Load

et al. 2021

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“…When to start oil exploitation can be determined by methods such as the fuzzy neural network. However, due to the discontinuity of the exploitation process, the oil deliverability cannot be fully utilised [14][15][16]. Therefore, the supply and demand balance control method has received more and more attention [17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Supply and demand balance control of electrical submersible linear motor for offshore oil exploitation

Wang

Yang

2022

IET Electric Power Appl

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A supply and demand balance control method for an electrical submersible linear motor utilised in offshore oil exploitation is proposed in this study. The permanent magnet linear motor is replaced by an electrical submersible linear motor based on switched reluctance linear motor. The sensorless control method further enhances the stability of the oil exploitation system. Meanwhile, a supply and demand balance control method is proposed to maintain the fullness of the submersible plunger pump within an ideal range. An established speed function allows the speed of the electrical submersible linear motor to dynamically alter in response to the change in oil deliverability and increasing the system's production. Additionally, maintaining the fullness of the submersible plunger pump within the ideal range helps simplify the model and increase computation accuracy. Finally, the supply and demand balance control method is validated and compared with the intermittent oil exploitation control method by simulations and experiments. Results from the simulations and experiments indicate that the proposed method can increase the production of the offshore oil exploitation system in addition to causing the motor to follow changes in oil deliverability and adjust the speed.

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Rapid Soft Re-switching Strategy of Intermittent Supply for Energy Saving in Beam Pumping Motors Systems With Dynamic Load Conditions

Zhao

Wang

Zhan

et al. 2019

IEEE Trans. on Ind. Applicat.

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Rapid Soft Re-Switching Strategy of Intermittent Supply for Energy Saving in Beam Pumping Motor System with Dynamic Load Condition

Cited by 3 publications

References 12 publications

Auto-Tracking Frequency Regulation Based Energy Saving Technology for Motor Systems With Dynamic and Potential Energy Load

Auto-Tracking Frequency Regulation Based Energy Saving Technology for Motor Systems With Dynamic and Potential Energy Load

Supply and demand balance control of electrical submersible linear motor for offshore oil exploitation

Rapid Soft Re-switching Strategy of Intermittent Supply for Energy Saving in Beam Pumping Motors Systems With Dynamic Load Conditions

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