I am having the same problem the eigen value analysis does not match the result given in the kundur's book. if u get the values right kindly let me know as well

I managed to get similar results not exact. What Saturation factor did you calculate? That matters a lot.

I didnt calculate any . I will look into that as well in the meantime if you get the right value kindly inform me as well.

If you still need any help, i can help you in this regard.

Hello @jawwad, I am student trying to rebuild the two area system in DIGSILENT. I am not getting the right Eigen values. Can you help me here? I can send my pfd file to look into if you want. Let me know asap.

Thank You in advance

Eigen values for two area system in DIgSILENT should be close to given in the book but you will not get the excat eigen vlaue in any software because each software use a different method to reach to eigen values. The following papers discuss this issue in detail:

https://www.researchgate.net/publication/229015767_Comparison_of_Industrial-Grade_Analytical_Tools_Used_in_Small-Signal_Stability_Assessment

https://www.researchgate.net/publication/228702974_A_study_of_the_eigenvalue_analysis_capabilities_of_power_system_dynamics_simulation_software

Article Comparison of Industrial-Grade Analytical Tools Used in Smal...

Article A study of the eigenvalue analysis capabilities of power sys...

Hey Imran,

Thank You for references., I just wanted to know the standard current values of the system i.e. in the transmission lines and weather there is a transformer considered in the loads if yes, what is the MVA and the voltage ratings of the transformers?

Anand Prakasha

sorry but i dont understood your question properly i can give you my model. Hope this will solve your problem. The eigen values for inter area and intera area modes in this simualtion are close to one given n the book

Hai Imran,

if you can share your model here, it would be really helpful. Is it in power factory? My question was in power factory, I have to enter the current value in the definition of the transmission line, and I don't find a right value and my second question was about the transformer used at the load buses, I have seen two models used, one with transformers and the other without. I want to be sure which is right and what is the rating of the transformers used (voltage and MVA rating)

Anand prakasha

hello Imran, are you available? I am waiting for a reply from you and may be the pfd file so that I can compare my model with yours.

Please reply asap