Model Construction: Access GIS pipenetwork data for automatic topology parsing; support batch import of full equipment parameters including pipes, valves, pumps, heat exchangers, heat/gas/water sources, pressure regulating stations and heatsupply stations; support online topology modification and incremental model update without full remodelling.

Simulation Solver Core: Adopt parallelcomputing solver adapted for cityscale largesize pipe networks; support both steadystate calculation and dynamic transient simulation; adopt hybrid algorithm combining physical mechanism model and AI datadriven method; support online model selfcalibration to iteratively revise calculation errors based on SCADA field measured data.

Realtime Digital Twin: Receive realtime field measuringpoint data, perform simulation deduction for pressure, flow rate, temperature and flow velocity of all pipenetwork nodes; implement virtual measuringpoint calculation for pipe sections without sensors to complement operating status of unmonitored positions.

Load Forecasting: Integrate meteorological conditions and historical operation data for shortterm load prediction; support pipenetwork condition deduction for the next several hours to 48 hours.

Simulation: Support accident simulation, pipenetwork reconstructionexpansion simulation, gas/heat source switching, valveclosing emergency drill and extremeload condition simulation. Sandbox deduction will not interfere with real production operation.

 Fault Analysis: Realize leakage tracing & location, pipenetwork bottleneck identification and abnormalcondition early warning; automatically generate analysis reports and present visual alarms.

External Interfaces: Provide open standard API interfaces to connect SCADA, GIS, MES and production dispatch systems; adopt B/S Web frontend for visual display and support export of various business reports.