Control method for adjusting jig frequency automatically

Abstract

The invention relates to a control method for adjusting a jig frequency automatically. The control method comprises: S1, a frequency converter is driven to start operation at a starting frequency; S2, a frequency range is defined by using a current operating frequency of the frequency converter as a reference point and is divided equally to obtain a plurality of frequency points; S3, the frequency converter is controlled to operate at each frequency point so as to obtain a corresponding determination parameter of the frequency converter during the operation at each frequency point; S4, an optimal determination parameter is searched and the frequency converter is controlled to operate at the frequency point corresponding to the optimal determination parameter; S5, whether the current operating frequency of the frequency converter is equal to a lowest lower-limit frequency is determined; S6, if so, whether the number of times of consecutive occurrence of a phenomenon that the current operating frequency of the frequency converter is lower than the lowest lower-limit frequency reaches a set number of times is determined; and S7, if so, the frequency converter is controlled to execute a standby mode.

Description

technical field [0001] The invention relates to a control method, in particular to a control method for automatically adjusting stroke frequency applied to a driving system of a pumping unit. Background technique [0002] With the development of economy, the position of oil in the economy of various countries has become more and more significant. In order to collect the oil in the oil well, it is necessary to utilize a pumping unit drive system to achieve. [0003] Generally speaking, the pumping unit drive system includes a pumping device, a frequency converter, a motor unit and a remote monitoring device. Among them, the oil pumping device, the frequency converter and the frequency converter of the motor unit are adjacent to the oil well, and the frequency converter adopts an operating frequency to control the speed of the motor unit, and the motor unit drives the operation of the oil pumping device, so that a sucker rod in the oil pumping device Carry out reciprocating ...

AI Technical Summary

Problems solved by technology

[0004] However, the traditional pumping unit drive system can only manually adjust the operating frequency of the inverter by the oil production personnel going to the oil well. Therefore, once the traffic is inconvenient or the weather is bad, the oil production personnel will not be able to go to the oil well to adjust the operating frequency of the inverter in time. Optimum adjustments, in this way, will affect oil production efficiency and cause a burden on personnel

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