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NREL / PRAS

NREL's Probabilistic Resource Adequacy Suite (PRAS)

Home Page:https://nrel.github.io/PRAS

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Unit-level random seeds

GordStephen opened this issue · comments

commented

Define unit-level random seeds to enable adding or removing resources without impacting the random outages associated with other resources. Currently, if a new unit is added, the simulation+sample seed will be used for the additional outage draws, changing which random numbers are associated with which units and thus the outage profiles of all units.

This would add a third level of seeding to a simulation:

  1. Simulation seed: primary random seed for the entire simulation. Provided (or generated automatically) when the simulation is initiated.
  2. Sample seed: secondary seed assigned to each sample from 1:nsamples. Generated automatically when makesamples sends simulation jobs to the threaded coroutines. Providing these directly (#36) would allow recreating specific random outage conditions
  3. Unit seed: new, tertiary seed assigned to each unit. Fixed across runs and samples and defined in the system specification data (e.g. .pras files)