Hi, am trying to model a battery storage to provide primary frequency response in PSSE using CBEST model but am unable to observe any dynamic changes in its output. Will appreciate if i can get some direction.

answered 2021-08-27 08:44:50 -0500

Yunzhi Cheng
1

You need to add another model to attach to CBEST to change Pref.

answered 2021-08-28 04:33:56 -0500

perolofl
2947 ●1 ●8 ●16

Model CBESTdoesn't have frequency control loop itself. Pout will be kept constant by the model. The power may be changed either manually or automatically by a separate model.

You can change Pout manually during the simulation by updating VAR(L).

For automatic primary frequency control you need to add a model updating VAR(L) of CBEST, as @Yunzhi Cheng wrote.