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Serving the entire oil and gas production chain
The automatic control system adopts the monitoring and data acquisition system (hereinafter referred to as SCADA system) to conduct centralized monitoring and production operation management on the operation of the entire pipeline.
The central part of the SCADA system is the computer data acquisition and processing system, which communicates with the PLC through VSAT (main communication channel) and Modem dialing (alternate communication channel), and collects process variables in real time into the central real-time database to list, trend and dynamic data. In the form of control flow chart, the process is displayed in an intuitive and rich form, and various data recording and analysis tools are provided, so that operators can analyze the process operation, predict the process operation trend and diagnose the hidden dangers of the safe operation of the entire pipeline. analyze.
The station control system uses the ControlLogix system, which represents the latest control system technology of Rockwell Automation, as the core controller, collects the temperature, pressure, regulating valve position and important measurement results and parameters of the pipeline, and accepts the control commands from the center and the station. , to control the valve and process. The ControlLogix system is used to make the control system realize the hot standby redundancy of the controller and the control network. At the same time, it also connects the Hirschmann RSS20 series switches to exchange data with other systems through the communication template.
Natural gas gathering, processing and exporting (long-distance pipeline) production chain
Each split site adopts the control module of AB ControlLogix for data acquisition and control, and uses Hirschman switches to connect the optical fiber network connection between the well site and the gas gathering station, the processing plant and the dispatch center, and the redundancy of the optical fiber ring network improves the control and data. reliability.
Oil and gas production digital standardization solution (IDC)
Rockwell Automation Industrial Private Cloud utilizes the current mainstream industrial data center virtualization technology to convert each system server in the production area (including MES server, SCADA management server, historical database server, real-time database server, WEB publishing server, video server, Security server, etc.), operator station, engineer station systems are centralized on the private cloud server of the group or factory, and thin clients are placed on the traditional system operator station. Subverting the traditional structure, it not only maintains the original server architecture to the greatest extent, but also uses private cloud technology to enhance server performance and reliability, prolong the system life cycle, and protect the user's investment.
Typical integrated control system of wellhead oil production device
The above picture shows the configuration scheme of each well area. The controller of Rockwell's CompactLogix is used to connect the on-site control quantities and variables to be monitored through the network. AB's panviewPLUS touch screen is used to realize on-site local control, and the frequency converter adopts PowerFlex series inverters communicate directly through Ethernet. The low-voltage and medium-voltage drives used in the pumping station and the pressurizing station are low-voltage PowerFlex755 and medium-voltage PowerFlex7000 series inverters respectively. Adopt Ethernet ring network communication, among which low-voltage drive drive has various control methods, standard V/Hz, with full customization function, speed sensorless vector control, with self-tuning function, magnetic flux vector control, with or without encoder feedback , induction and permanent magnet motor control. Built-in real-time clock, DeviceLogix logic control function, realize synchronous start and stop at each site. The medium voltage PowerFlex7000 series inverter is a global product. Compliant with the most common standards such as NEC, IEC, NEMA, UL and CSA, it is suitable for the most common medium voltage level power supply voltage in the world, ranging from 2400-6600 volts. Using Pulse Width Modulation (PWM) technology - Power Flow Inverter (CSI) as the motor side converter, the performance is superior. The data is transmitted to the dispatch center through Hirschman RS20 series switches. Network security is ensured by adding Tofino industrial firewall between each PLC. No matter where an attack or human error occurs anywhere in the network, the defense-in-depth model can effectively limit its impact on the entire network, with multi-layered protection, differentiated protection, and layered protection against specific threats.