Re: Constructing IEEE second benchmark for subsynchronous resonance using matpower

[Carlos E Murillo-Sanchez]

yangyang wrote: Hi Carlos, I think there is a bus labeled 1 in the bus field, next to the "mpc.bus" in the file, and it is a slack bus. If there was not a slack bus, runpf() will report an error. So this may not be the problem of my case... Best Regards, Yang Yang You're right, my bad.� A 5 second glance is a bad idea.� I now see a� problem: you have an impossible� 22.7273:1 tap ratio in branch 4, leading to outrageous losses and reactive dispatches in the power flow solution.� carlos.