Oil pumping unit centralized control special-purpose inversion control device

Abstract

The present invention discloses an oil pumping unit centralized control special-purpose inversion control device, comprising an electric power conversion main circuit, a detection and protection module, and a single-chip microcomputer control module, wherein the detection and protection module is connected to a detection end of the electric power conversion main circuit, the single-chip microcomputer control module is connected to the detection and protection module; the oil pumping unit centralized control special-purpose inversion control device also comprises a driving module and an unbalance energy feedback protection processing module, wherein the input end of the driving module is connected to the output end of the single-chip microcomputer control module, the output end of the driving module is connected with the control end of the electric power conversion main circuit; and the oil pumping unit centralized control special-purpose inversion control device also comprises a running state monitoring module which is connected to the single-chip microcomputer control module. The oil pumping unit centralized control special-purpose inversion control device of the present invention solves the problems that the conventional equipment is poor in efficacy and high in cost, and has the advantages of high energy-saving efficiency, low cost, capacity of monitoring the running state of an oil well in real time, capacity of completing unbalance energy feedback of the oil well, capacity of protecting the whole system, etc.

Description

technical field [0001] The invention relates to a control device for pumping unit wells, in particular to a dedicated inverter control device for centralized control of pumping units. Background technique [0002] At present, there are various detection and control methods for pumping units and driving motors in China. For example, for the purpose of improving the process and increasing the recovery rate, the pumping units are equipped with inverter governors and dynamometer test analysis. instrument, slip motor, pole-changing speed regulation; in view of the low efficiency and low power factor of the pumping unit due to the long-term state of "big horse-drawn trolley", the energy-saving control motor and step-down voltage are adopted in order to save energy and reduce consumption. Energy saving and Δ / Y connection control, as well as the so-called super energy saving device that realizes energy saving through intermittent control of the pumping unit, etc. The control of pum...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a dedicated inverter control device for centralized control of pumping units, which solves the problems of poor efficiency and high cost of existing equipment, has high energy-saving efficiency and low cost, and can monitor the operation of oil wells in real time. Balanced energy feed, implementation and protection of the entire system, etc.

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