Abstract

Modern trends in the development of technology are based on the need for experimental studies of the equipment being developed in laboratory conditions with the maximum approximation of the operating modes to real ones. Such studies are impossible without the development of specialized stands with test automation systems. Automation of processes involves the organization of measuring channels as part of a stand using analog-to-digital conversion (ADC), digital-to-analog conversion (DAC), digital-todigital conversion (DDC) and the development of a hardware-software complex (HSC) based on high-speed computing devices. As part of the project to create new high-tech equipment, the specialists of FSBEI HE “KSPEU” and JSC “ChEAZ” developed and created an experimental stand designed to verify and confirm the correctness of the selected structural and circuit solutions used in the design of a synchronous valve electric motor (SVEM) and rod control station borehole pumping unit (RC SBPU). The object of experimental research was the prototype and prototype electric drives of oil pumping units, as well as their components: SVEM and RC SBPU. The article discusses the ways of organizing the measuring and control channels of the measuring and information system of the experimental bench, which allows to study samples of synchronous valve motors and control stations of the sucker rod pump unit in the regimes that are as close as possible to real field conditions simulating the operation of the oil pumping unit of the sucker rod pump unit. Thus, in the experimental stand, analog, discrete and digital control and control channels are implemented.

Highlights

  • Modern trends in the development of technology are based on the need for experimental studies

  • of the equipment being developed in laboratory conditions with the maximum approximation

  • Such studies are impossible without the development of specialized stands with test automation systems

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Summary

Introduction

Для измерения напряжения и тока, потребляемого системой нагружения стенда, а также для реализации каналов контроля скорости и тока нагрузочного преобразователя частоты, применены датчики с аналоговым выходным сигналом в виде напряжения 0...10 В с пределом основной приведенной погрешности не более 0,5%. При проведении испытаний используется три канала: «Пуск/Стоп» для включения и отключения режима работы преобразователя; «Вперед/Назад» для изменения направления вращения двигателя, то есть нагрузочный двигатель либо нагружает испытуемый двигатель (режим противовключения), либо разгоняет его для имитации режима большой разбалансировки станка-качалки нефти; «Выбор управления скоростью/моментом» для изменения режима процесса испытания либо разгон либо нагрузка испытываемого электродвигателя моментом. Такой принцип позволяет системе управления создавать переменный крутящий момент на валу испытываемого двигателя для имитации работы станка качалки-нефти и выполняет одно из требований технического задания, предъявляемых к стенду: нагрузочные характеристики электропривода должны задаваться при помощи пульта стенда, пульт должен выдавать пропорциональный моменту аналоговый сигнал – на токовый вход электропривода.

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