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Dynamic simulation: oscillations without disturbance applied

asked 2021-08-27 09:49:26 -0500

cresg gravatar image

updated 2021-08-27 09:50:33 -0500

Hi everyone,

I am running dynamic simulation for a case study. Even before applying any disturbance, I see oscillations in plots for voltages, etc. which then settle at steady-state values after about 15 seconds.

The initial conditions check comes okay when the dynamic simulation is initialized. What, then, am I missing?

Any help will be highly appreciated.

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How big are the oscillations? What are the d-states?

likethevegetable gravatar imagelikethevegetable ( 2021-08-28 21:26:03 -0500 )edit

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answered 2021-08-30 03:25:16 -0500

perolofl gravatar image
  1. Check progress window for messages during the simulation.

  2. Use activity Compare (DIFF) to compare the load flow after 15 s simulation with the original saved case to see if there are any changes in bus voltages or line flow. This may indicate what is going on in the simulation.

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Asked: 2021-08-27 09:49:26 -0500

Seen: 113 times

Last updated: Aug 30