What does PSSE do around resonance?

asked 2019-06-24 01:33:59 -0500

haveityourwa gravatar image

Hey, Not sure if the issue I am seeing is due to resonance or something else however when running a frequency sweep on a model (change the impedance in each solution in order to study a different frequency) when approaching a resonance it appears that PSSE takes a busses voltage to 0pu at some point. I have actually tried this with a few different powerflow programs, pandapower and even powerworld and they all seem to have the same issue (not sure if it is an issue or simply core to how the Power Flow solution works). image description

The system is simply a 2 bus system with a slack at 1pu voltage. A single line of R,X pu of 0.0833,0.311000 at 50Hz (0.0833,3.732@600Hz). And a single fixed shunt 1.5Mvar at 50Hz(18 @600Hz) Like So. image description

Any information on this would be appreciated, can't upload files yet otherwise I would put up the raw files.



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Frequency swept in psse can be done with short circuit analysis, in stead of power flow analysis. Refer to this paper: https://ieeexplore.ieee.org/abstract/document/7741951%3C/p%3E (https://ieeexplore.ieee.org/abstract/document/7741951)

yunzhi cheng gravatar imageyunzhi cheng ( 2019-06-27 20:44:27 -0500 )edit