A Design Of Medium-frequency Power Supply For Heavy Oil Extraction

At present, many big oil-fields are mining to containing the gum quality asphalt, containing wax and the high freezing point oil which are called" three high" crude oil. Usually adopting the work- frequency to heat the crude oil, which is called hollow oil pole extraction technique. For resolving the low efficiency and wasting power in the work-frequency heating of the heavy oil. We make use of the frequency changeable technique to design a frequency changeable power supply. In order to provide the electrical cable with the power whose voltage, frequency and power can be adjusted. So we can resolve the problem for which can pollute the power net because of the unbalance for transducer the three phases to single when use the work-frequency to heating. And we can raise the power factor and improve the result of heating.According to the enunciation of experiment on the scene, the application of the changeable frequency heating power supply can raise the efficiency of heating, carry out the soft start, increase the protection function and avoid the pole breakdown because of contain the sand, wax and heavy oils. In the adoption of the medium-frequency electricity heating technique, the oil extraction efficiency is high and consumes lowly, pollute to the net small, operates simply, the degree automation is high.