Petri Nets

In the domain or in a subdomain of electrical grids describe 3 business processes or behaviors (all 3 substantially different) in which you think interaction, cooperation, event/resource sharing, or communication should be highligthed. Provide informal descriptions and illustrate important aspects with Place/Transition Nets for each of these. Remember that an entity can also be viewed as a behavior. Try to use Place/Transition Net features like multiple tokens in a place, transitions that consume or produce multiple tokens, and/or capacities on places in a way that makes sense in your examples.