The historical simulation is used to simulate exactly what happened in a
certain period back in time. The historical simulation is based on SCADA data
loaded via Data Manager for all relevant boundary conditions forming basis for
this replay of the operating conditions.
Alternative scenarios can afterwards be configured to highlight differences
between the actual operation and alternatives. The historical simulation
conducted as follows:
- The user selects start and stop date / time
- The system reads all measurements included in the defined interval and the
nearest measurements outside the interval.
- The simulation is conducted using the selected time steps and interpolation
between measurements.
Result of historical simulation
Measured flow to zone

Simulated flow to zone
Simulation modes: Cyclic / Non cyclic
- Non cyclic simulation (nearest old name: offline simulation)
Manual start
of simulation at a user defined date and time. - Cyclic simulation (nearest old name: real time simulation)
Automatically
started simulation being conducted with a user defined cycle. - In AQUIS Operation real time simulation is an automatically started
simulation where some boundary conditions are read in Data Manager. An offline
simulation is not using measurements but a fixed number or a time series.
- In Operation is any simulation conducted using the defined boundary
condition. The boundary condition is either a fixed number, a time series or a
measurement. The measurement might be a time series.