The Beam Unit's Application Of The Special Frequency Control System & Simulation Study

Oil is the vitals of the national economy, which is incomparable status in the national economy, but the energy oversize consuming and the exploitation inefficiency get on our anxiety in the course of the exploiting in our nation's oil field. In the oil application field, the beam unit dragging system is a main sort of oil extraction with rod, which is the prevalent manner of our country oil exploitation. However , at present there are some problems in oil extraction system with rod. System efficiency is very low, therefore, it is very serious the big horse hauls small cart;Load feature of the beam unit is periodical and alterative load with impact, sometime there is a problem of generate electricity;It raises the oil extraction of cost due to large energy loss;The problem of half load of light load is still serious, there is considerable time half load in a stroke. Therefore, improving the exploitation efficiency, reduce the exploitation cost, which are the exigent problems in the course of exploiting oil.Base on the series of problems in beam unit dragging system above mentioned, discussed the variable frequency system's status quo and developmental direction; analyzed operating principle and load characteristic of the beam pumping unit; and compared the diversified energy-saving methods on the oil field; definitely indicated the strongpoint and shortcoming of the diversified energy-saving methods, based on these factors, the variable frequency control the beam unit dragging system is a reasonable choice by putting to test.The paper expatiated the system's software and hardware design based on the beam pumping unit intelligent control, chose 89C51 as SCM control chip, designed SCM system control unit, the forward passage of the voltage and current measuring, and the backward passage of the error protection, furthermore, educed the test...