Design Of Inverter Monitoring Decision Support Management System Based On GPRS

With the development of industrial automation and computer network technology, the variable frequency control system in industrial production, particularly in the oil field pumping unit monitoring system, was more and more widely used, and with the development of General Packet Radio Service (GPRS), it provide a link between users and mobile data network for high-speed wireless IP communications functions, thereby achieving inverter control system information and feedback in the form of IP packets to the Internet / GPRS wireless transmission to the monitoring platforms, and achieve wireless remote monitoring for the pumping unit, and other electrical devices.In the practical application of modern oil industry, in addition to the real-time monitoring converter and pumping driven by the inverter such as the various state motor terminals, but also needs to be collected in accordance with the historical data, equipment data and information, the formulation Pumping on the comprehensive evaluation index system, raise the oil pumping equipment, such as the scientific nature of the management decision-making. At present oilfield pumping frequency remote equipment monitoring system and the decision support system are independent systems, resulting in the management and control of the oilfield integration bottlenecks, make the detriment of oilfield production efficiency of the enterprise, so needing a can This seamless combination of the two systems monitoring decision support system, so that the oilfield enterprise information.At first, this paper will analysis the characteristics of the oilfield pumping control systems which commonly use the inverter system, and mainly in accordance with the construction of oilfield automation information systems strategy, using CIMS (Computer Integrated Manufacturing System) designing idea, put forward a common support decision-making control management platform, it will be composed of automated information construction oilfield Frequency Monitoring System, pumping management decision support system and the oil field of ERP enterprise management system, making them for a high degree of integration, with a building ERP (enterprise resource planning) management thinking, decision support management system , SCADA (supervisory control and data acquisition) integration of the management and monitoring of the common control decision support management platform.Then using the most advanced GPRS / DTU wireless network technology for the pumping frequency system, the application of DTU transparent transmission functions, allowing the remote monitoring of pumping parameters (such as current, voltage, frequency, active power, power void data and fault alarm signal) to using GPRS wireless real-time transmission to the Frequency Monitoring System platform,and achieviing on the pumping unit for remote monitoring at the same time in different locations, through the database storage technology, we will grasp the operations of the terminal in time, make A comprehensive analysis for the data collected,and then with the basic information of pumping equipment, through the management decision support system, make the pumping comprehensive evaluation indicators, so that Improve the production efficient highly, and unify management to provide strong technical support.Finally, we choice the hardware which Sunplus company produces the MCU 16 Frequency (SPMC75F2313A) variable frequency controller, it have the dead-zone functionality and support SPWM multi-channel output ,so using it as a key component of the System, then we propose modified sine array of fixed, regular non-value Real-time calculation algorithm SPWM carrier output, reducing the harmonic component of the proportion of energy, smooth sine wave output, so it will be more effectively to reduce pumping motor load loss, increased load life.