Yixing SCADA Station Control System

The "Yixing SCADA Station Control System" is an important component of the SCADA system, which includes the station instrument system, data acquisition system, and computer monitoring system. The station control system can be regarded as an independent SCADA system, which can work independently from the dispatch center to complete data acquisition and control work within the station. At the same time, important parameters of the operation of this site can be remotely transmitted to the dispatch center.

Set up monitoring terminal devices within the station to monitor the parameters and operating status of the main equipment in the station. The on-site system is divided into multiple layers and hierarchical management modes. Staff are classified into different levels corresponding to different operational permissions based on the nature of their work, and can be basically divided into system administrators/engineers and operators. The station control system and dispatch center transmit data through data communication methods such as fiber optic or GPRS.

(1) System composition

• Computer and monitoring software system
• Local data acquisition, display, and alarm interlocking control system (PLC/RTU)
• SCADA system communication interface
• On site transmitters, flow meters, actuators, odorizing systems, and other instruments
• Station area video surveillance system

(2) Implement functions

• Data collection, alarm and transmission functions:

Collect operational parameters of production, transportation, and distribution processes within the station; Real time data and working status of chromatograph, flow computer, odorizer, and communicate with higher-level station (dispatch command center) for data communication
Collect operating parameters of low-voltage distribution system and issue fault alarms
Collect operational parameters of the fire protection system within the station, issue fault alarms, and ensure that the fire protection system is always in a usable state
On site video surveillance, infrared detection, and alarm for non staff intrusion into the work area

• Control function:

Execute the instructions issued by the superior station
Pressure over limit interlock protection control
Automatic interlocking protection control for combustible gas leakage alarm
Automatic adjustment and control of process parameters
All electric valves in the station are remotely controlled and manually controlled locally

• Display function:

Dynamic flowchart display (including real-time operating parameters and equipment status)
Dynamic display of operating parameters, real-time and historical trend chart display of parameters
Alarm screen display
Industrial television monitoring in the station equipment area and work area

• Printing function:

Report Printing
Printing of fault records

• Other functions:

On site data management, data storage, and analysis
Accident recollection
Personnel login and operation records
The system automatically executes action records
System self diagnosis and self recovery
Limitations on control permissions and access permissions
Data security processing function

The "Yixing SCADA Station Control System" can be widely used in natural gas initial stations, terminal stations, gate stations, distribution stations, coalbed methane, and artificial gas storage and distribution stations; Water treatment plant; Heating company boiler room, heat exchange station, urban drainage pump station; The oil field adopts the data acquisition and monitoring system of large-scale plant stations in SCADA systems such as comprehensive stations.