Battery model for transient stability
Hi every one, I have used in PSSE, REGCA1, REECCU1 and REPC1 to simulate the dynamic model of a Battery energy storage for transient stability. Now I need to make this battery storage works only when I have a high deviation in the bus frequency but I don't know how to make this operation condition. Second I want to use that dynamic model to simulate a flywheel. so I need to adjust it to make it provide high active power in a short time for discharge. I don't know where to make this adjustment. Can any one help in that?
Comments
Is the frequency flag in the REPC1 model enabled?
Yes the Fflag = 1. I put the Pgen = 0 to avoid adding the battery to the load flow calculation, is this has any effect?
What is the value of SOCini, SOCmax and SOCmin in the REECCU1? The way I understood it, you are treating the BESS in standby/idle mode and let it discharge/charge during frequency event. Is that correct?
Yes exactly that's why I didn't add it to the load flow calculation. now SOCini = 1 because I want the battery to be fully charged at initial state, SOCmax = 1 and SOCmin = 0. I have also add T = 20sec.
I have this similar set-up before where battery is in idle and discharged power when i simulated a loss of generation (tripping of one combustion turbine) so I think this should work too for your set-up. What about the Ddn and Dup values? Also, a T=20 secs seems to be too small.