Re: Constructing IEEE second benchmark for subsynchronous resonance using matpower

[Carlos E Murillo-Sanchez]

yangyang wrote: Dear all, I am trying to construct the power flow of IEEE 2nd benchmark for SSR study; and my implementation is as attached. The capacity compensation is 55% and the other data can be found in the paper (https://ieeexplore.ieee.org/document/4118844) I am not attaching the paper because there is size limit. However, the power flow results differ a lot from the example in Simulink; runpf() shows that the angle at all buses are 0 but the example in Simulink (https://www.mathworks.com/help/physmod/sps/ug/steam-turbine-and-governor-system-subsynchronous-resonance.html?searchHighlight=subsynchronous%20resonance&;s_tid=srchtitle) shows that the angle at the terminal of the generator is around -30 degrees. How can I reproduce this correctly? Thank you. Best Regards, Yang Yang After a five second glance at your file, I see that your fist generator is assigned to a bus with a label of '1';� however, in your bus table there is no bus with such a label.� Also, you don't have a reference bus.� Additionally, the interconnections in your branch table would imply the existence of at least four buses labeled "1", "2", "3" and "4", but as said earlier, "1" is missing. carlos.