EQUINOR KOLLSNES GAS TERMINAL
System 800xA Extended Automation & OPTIMAX® EMS | Gassco Operator & Equinor TSP
Hourly Operating Cost
€0
Analyzing...
Export Gas Flow & Pressure
0 Sm³/h
@ 140.0 bar
Pipeline Quality (H₂O & CO₂)
21.5 mg / 1.85%
SPECS COMPLIANT
Total Electrical Load & Tariff
0.0 MW
Grid: 0 MW | GT: 0 MW
Carbon Footprint & Grid Tariff
0.0 tCO₂/h
Grid: €85/MWh (Off-Peak)
Interactive Process Flow Diagram (v2 High-Fidelity)
Real-Gas EOS • AGRU Amine • Cascaded WHRU • Anti-Surge Recirculation
20-VA-101 Slug Catcher 185k Sm³/h 32 bar, 24°C Z: 0.912 CO₂: 2.80 mol% 21-HA-101 / FA-102 MDEA AGRU Amine 122°C Reb Reb: 4.8 MWth 1,180 L/min CO₂: 1.85% OK 22-HA-201 / FA-202 TEG Dehydration 204°C Reb Reb: 2.4 MWth Trim: 0.0 MW 21.5 mg/Sm³ 23-KA-101A ABB VSD Train A 9.8 MW ASV: 0 Sm³/h 23-KA-101B ABB VSD Train B 9.6 MW ASV: 0 Sm³/h 23-HA-105 Air Intercooler 6.2 MWth Fan: 0.14 MW T_out: 36.0°C 23-KA-201 Export Booster 19.4 MW Tot Surge: 18.5% 80-PL-001 Gassco Export 181k Sm³/h 140.0 bar CO₂: 1.85% | OK Linepack: 138 bar (59%) 27-HA-305 Fuel Preheat 130.0°C 0.32 MWth +1.1% Eff Gain 27-KA-001 (LM2500+) Gas Turbine Generator 14.0 MW 3,580 Sm³/h fuel Derated: 29.8 MW 34.1% eff 27-HA-301 (WHRU) Dual-Circuit Flue Heat HT: 2.4 MW (TEG) MT: 5.7 MW (Amine) Stack: 148°C Pinch: 24.0°C OK 50-EL-001 (STATNETT) 420/132 kV Substation 16.5 MW €85.0/MWh Peak Cap: 18 MW Cap: 35.0 MW Max — Natural Gas Stream (Real-Gas EOS) — High-Temp WHRU Loop (204°C) - - Med-Temp WHRU Loop (122°C) — 11kV Power Bus - - Anti-Surge Recirc
— Grid Power (MW) — Gas Turbine (MW) - - Hourly Cost (€/h)
Core Action Broker Gate
VERIFIED APPROVED
  • Anti-Surge Safety Margin (≥12%) ✔ PASS
  • Choke Prevention Margin (≥8%) ✔ PASS
  • Grid Intertie Capacity & Peak Tariff ✔ PASS
  • Gas Turbine Ramp Rate (≤5 MW/step) ✔ PASS
  • TEG Reboiler Pinch (≥200°C) ✔ PASS
  • AGRU CO₂ Specification (≤2.0 mol%) ✔ PASS
  • Heat Exchanger Approach Pinch (≥6°C) ✔ PASS
  • GT Ambient Derating Compliance ✔ PASS
Audit: sha256:7f49c018...b819f201
Governed Setpoint Change Request
Target Parameter Current Proposed Delta
Gas Turbine MW 14.0 MW 18.0 MW +4.0 MW
Grid Import MW 16.5 MW 12.5 MW -4.0 MW
Compressor Speed % 96.0 % 94.5 % -1.5 %
Intercooler Target 36.0 °C 32.0 °C -4.0 °C
Fuel Preheat Target 130.0 °C 130.0 °C 0.0 °C
Current Running Cost: €1,840/h
Optimized Projected Cost: €1,560/h
Net Projected Savings: €280/h (-15.2%)
Agentic Optimizer Rationale Feed
▸ Analyzing spot electricity tariff (€85.0/MWh) vs fuel gas opportunity cost.
▸ Cascaded WHRU supplies high-temp TEG loop and med-temp AGRU + fuel preheater.
▸ Real-gas Papay EOS compressibility applied to centrifugal polytropic head.
Operational Scenarios & Disturbance Presets
Camera Presets:
Layers:
NORTH SEA ENERGY INFRASTRUCTURE
Troll twin 36" & subsea feeder lines
Europipe II 42" & Zeepipe I 40" (Trunklines)
Åsgard Transport 42" rich gas (707 km)
Subsea HVDC Interties (North Sea Link, NordLink)
Statnett 420 kV regional corridors
24h Subsea Linepack Virtual Battery & Multi-Vector Tariff Arbitrage
Europipe II / Zeepipe Subsea Linepack Buffer (118 - 152 bar MAOP) • Nord Pool NO5/NO2 Day-Ahead Spot Shaving
OPTIMIZATION MODE:
SUBSEA LINEPACK INVENTORY 112.4 M Sm³
TRUNKLINE PRESSURE (118-152 BAR) 138.0 bar (SOC: 58.8%)
VIRTUAL BATTERY SOC FLOAT (BALANCED)
GASSCO 24H DELIVERY TARGET 4.44M Sm³ (100.00%)
DAILY ARBITRAGE BENEFIT +€7,033 / day (+€2.57M/yr)
SIMULATED HOUR & SPOT 08:00 (Spot: €240/MWh)
24h Schedule Timeline Scrubber:
24-Hour Rolling Linepack & Tariff Multi-Curve Trajectory
— Nord Pool Day-Ahead (€/MWh) — Linepack Pressure (bar) — Grid Power (MW) - - Peak Tariff Cap (30 MW)
Multi-Vector Optimization Mechanics

Valley Hours (00:00 - 05:00): Off-peak hydro electricity prices drop to €45-85/MWh. ABB MEGADRIVE-LCI drives ramp to 100% capacity, packing subsea pipelines up to 146 bar and pre-buffering export linepack.

Peak Hours (07:00 - 10:00, 17:00 - 20:00): Day-ahead power climbs to €240-380/MWh with Statnett capacity demand fees. Electric compressors draft the pipeline down to 132 bar, reducing grid draw and shaving peak demand by up to 12.5 MW.

Gas Turbine WHRU Cascading: At Kårstø, LM2500+ co-generation provides 8.6 MWth heat to the MDEA AGRU reboiler, optimizing combined thermal-electric dispatch across both NO2 energy vectors.

24h Economic Capture Breakdown
Optimization Vector Baseline Uncontrolled Active Arbitrage Net Daily Value
Peak Capacity Tariff Avoidance €5,280 / day €1,410 / day +€3,870 / day
Off-Peak Energy Shift (Nord Pool) €19,450 / day €16,840 / day +€2,610 / day
EU-ETS Carbon Allowance Savings 48.2 tCO₂ / day 39.1 tCO₂ / day +€553 / day
Total 24h Net Value Added €26,830 / day €19,797 / day +€7,033 / day
API 617 Centrifugal Compressor Aerodynamic Performance Maps
Polytropic Head Hp vs Actual Suction Flow Q_act • Anti-Surge Control Margin & Stonewall Choke Envelopes
SELECTED STAGE Stage 1 (Trains A/B)
VSD SPEED 96.0% (1,440 RPM)
ACTUAL SUCTION FLOW Q_act 5,568 m³/h (185k Sm³/h)
POLYTROPIC HEAD H_p 102.7 kJ/kg
SURGE SAFETY MARGIN (≥12%) 46.0% (ASV CLOSED)
CHOKE / STONEWALL MARGIN 21.3% SAFE
ENVELOPE STATUS OPTIMAL ENVELOPE
Aerodynamic Operating Point & Multi-Speed Performance Curves
Surge Limit Line (SLL) ASCL (+12% Safety Line) VSD Speed Curves (80% - 105%) Best Efficiency (BEP) Stonewall (Choke)
API 617 Anti-Surge Control Principles

Surge Limit Line (SLL): Represents the aerodynamic stall boundary where flow reversal and severe axial vibration occur. Centrifugal impellers must never operate beyond this line.

Anti-Surge Control Line (ASCL): Placed at a calibrated 12% safety margin to the right of SLL. When suction flow drops towards the ASCL, the high-speed Anti-Surge Recycle Valve (ASV) modulates open to recycle discharge gas to suction, stabilizing the compressor.

ABB MEGADRIVE-LCI VSD Control: Variable speed drive allows modulating operating speed between 80% (1,200 RPM) and 105% (1,575 RPM) to match linepack demand without throttling energy loss.

Real-Time Stage Aerodynamic Telemetry
Aerodynamic Parameter Value Design Rating Status
Polytropic Efficiency (η_p) 84.2% 83.5% Guarantee OPTIMAL
Suction Volumetric Flow (Q_act) 5,568 m³/h 4,200 - 7,100 m³/h NORMAL
Anti-Surge Recycle Valve (ASV) 0.0% (CLOSED) < 0.5s Full Stroke CLOSED
Impeller Drive Power 14.2 MW 18.0 MW Continuous 78.9% MCR
ABB Automation Extended • 3-Layer Autonomous Architecture
3-Layer Autonomous Workflow Navigator
Enterprise & Fleet Layer ➔ Extended Automation Layer (Digital) ➔ Core Automation Layer
1
Nord Pool Winter Peak Arbitrage 💡
NO2/NO5 Tariff Spike ℹ️ • LM2500+ Cogen ℹ️ • Statnett Peak Shaving ℹ️
2
Åsgard Sour Gas & AGRU Balancing 💡
4.2% CO₂ Slug ℹ️ • MDEA Amine Kinetics ℹ️ • Dual WHRU Cascading ℹ️
3
Statnett Grid Sag & ABB MPTC Ride-Through 💡
420 kV Sag (-35%) ℹ️ • Fast DSP MPTC ℹ️ • Zero Flaring / Zero Interruption ℹ️
🏢 ENTERPRISE & FLEET LAYER 💡
Nord Pool • Gassco GTC • Carbon Accounting
STANDBY
➔
🧠 EXTENDED AUTOMATION (DIGITAL) 💡
Agentic AI • OPTIMAX® RTO • Action Broker
STANDBY
➔
⚙️ CORE AUTOMATION (DCS / SAFETY) 💡
System 800xA • AC 800M • Operator Gate
STANDBY
Step 1 of 6 🏢 Enterprise & Fleet
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Total Running Cost €0/h
Gas Turbine MW 0.0 MW
Grid Import MW 0.0 MW
Pipeline Specs COMPLIANT
Audit Digest sha256:...
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