SCADA SYSTEM OF DISPOSAL PLANTGAS EXCESS PRESSURE
Abstract
As the capacity of excess pressure utilization units, which are built on the basis of the expander-generator unit (EGA), increases, attention is being paid to increasing the efficiency of these units. A change in the parameters of the flow coming to the recycling plant necessitates the stabilization of the parameters of the electricity generated in the consumption network. To a large extent, disturbances in the rotation modes of the turbine, which is part of the EGA, are associated with the change in time of the electrical load parameters. Since the steps to improve the control systems of low-energy installations at the current pace of development of microprocessor technology are becoming more and more popular, the development of tools for setting multi-loop regulators must meet market requirements.The structure of the two-level SCADA system, which ensures the stabilization of the parameters of the DGA operation under the conditions of load changes and gas flow disturbances, is considered. The operator station provides process monitoring, and the control unit provides communication with the field level and generation of control influences for the stepper motor driver. According to the control signals, the stepper motor works out the position of the valve of the gas pipeline, which determines the pressure and flow rates. The HMI interface allows you to display the state of the plant’s operating equipment, and the SCADA system captures data for subsequent processing and control circuit adjustments. The use of OPC server technology in the construction of a SCADA system makes it possible to establish the interaction of the results of modeling the control object in the MATLAB environment and the PLC S7-300 programming environment of the SIMATIC company. The practical significance of the research lies in the expansion of the possibilities of setting local regulators that interact in the control system of the excess pressure disposal plant. The prospect of using the SCADA system is to build a network of utilization facilities that will increase the efficiency of using overpressure energy.
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