A scenario is a set of modifications of the simulated model, that can affect both the supply and the demand.
Scenarios use events and temporary attributes to enable or disable objects according to the configuration of a specific simulation, and custom activations can be triggered.
A simulation can be assigned any number of scenarios. If a scenario is active in a simulation, all events and temporary attributes associated to the scenario become active.
For example, scenarios can be used in real-time environments to trigger some sets of network settings that else would not have been active, such as an extraordinary TLZ closure.
Parallel simulations
A simulation group is a set of simulations associated to the same time period, and they are generally referred to as parallel simulations. Parallel simulations are then reciprocally compared.
One of the simulations, used as a reference, is called base simulation. The base simulation refers to the state of the real network in the “no-modification” scenario.
In combination with the scenarios, parallel simulations are useful, for example, to compare alternative control actions, such as alternative contingency signal plans. By activating different objects on the network, you can assess the effects of several interventions and choose the most effective one.
When used in the real-time environment of Optima, alternative simulations run from the same instant of the base simulation, with different scenario settings.