DEVELOPMENT OF REQUIREMENTS TO THE SMART CONTROL STATIONS FOR ELECTRIC DRIVES OF WELL PUMPS
The use of electric submersible pumps is the main method of mechanized oil production in our country. Submersible pump units operate under extremely difficult conditions, such as high pres-sures, temperatures and corrosive environments. Therefore, the elements of submersible electric centrifugal pump units are subject to increased requirements for reliability, ability to withstand overload, and the duration of the overhaul period. To date, the increase in reliability of submersible pumping units is possible mainly by optimizing the operating modes of the equipment, which will reduce wear of the elements and prevent operation during overloads. To provide such modes is possible by means of introduction of smart control stations providing frequency regulation of elec-tric drives of pumps on the basis of analysis of measurement data of technological parameters. The domestic and foreign industry produces a number of control stations with a frequency-controlled drive. In this case, their circuit design is almost identical, the differences are in the built-in algo-rithms for information processing and control. In the article the authors give a list of technological and electrical protections that should be implemented in the control station, and also analyze their functional capabilities. The control stations must provide the following groups of functions: control of the electric drive, writing in the memory of the values of technological parameters, telecommu-nication exchange. The well controller must ensure that information is viewed in text and graphics directly in the field. All the most common control stations are made low-voltage, which implies a two-step voltage transformation. In this regard, one of the possible ways to improve the energy efficiency of electric submersible pumps is the development and use of control stations based on high-voltage frequency converters, which will reduce the number of transformers and increase the overall efficiency of the pump unit.