The automatic control system of a gas distribution station (SAU GRS) is designed to automatically maintain the set process of distribution and supply of gas at the required pressure and volume, protect consumers from unsafe deviations of parameters and prevent emergencies through their timely detection.
SAU GRS monitors and controls the main and auxiliary equipment, including shut-off and regulating valves, and interacts with local control systems to obtain process information in all operating modes.
What the system provides
- Monitoring of pressure, temperature and flow at all process points
- Control of the shut-off and regulating valves, switch-over between reduction lines
- Protection of consumers from unsafe pressure deviations
- Emergency and warning alarms, event log with operator interventions
- Interaction with local systems: heaters, odorizer, metering unit, gas detectors, fire alarm
- Transmission of data to the upper-level dispatch centre via Modbus TCP / RS-485
- Hourly, daily and monthly archives in non-volatile memory
- Backup power supply for at least 72 hours
Technical data
Control unit
| Controller | — | Industrial PLC with modular architecture (module replacement without replacing the entire controller) |
| Operator interface | — | HMI panel in the control room; SCADA workstation (option) |
| Interfaces | — | RS-232 / RS-485, Ethernet; Modbus RTU / Modbus TCP |
| Discrete signals to the upper level | — | “Normal operation”, “Warning”, “Emergency” (dry contact) |
| Cabinet protection degree | IP | 54 |
| Operating temperature of the control unit | °C | 0 … +55 (−25 … +55 on request) |
| Location | Ex | Non-hazardous room; field devices — Ex design |
Power supply
| Main supply | V | ~230 (+10 % / −15 %) |
| Backup supply | V | =24, batteries |
| Operation from backup power | h | ≥ 72 |
| Surge protection | — | Yes |
Reliability
| Service life | years | ≥ 12 |
| MTBF | h | ≥ 30 000 |
| Maintenance interval | years | 2 |
Applications
Related products
Automatic gas distribution stations “Energia”
Complete block stations for 1 000 – 100 000 Nm³/h: cleaning, heating, pressure reduction, metering and odorization without an operator.
Learn moreGas odorization complex “KlOG” (valve type)
Pulsed gravity dosing of odorant through solenoid valves in proportion to gas flow. Simple and reliable solution for stations of small and medium capacity.
Learn moreGas odorization complex “KOG” (pump type)
Injection of odorant by an electromagnetic diaphragm metering pump in proportion to gas flow — for stations up to 400 000 m³/h and pressures up to 5.5 MPa.
Learn moreRequest a quotation
Tell us about your site: gas flow rate, inlet and outlet pressure, required functions. We will prepare a technical proposal within 3 working days.