Hi Itishree Ghatuari,

Have you derived the mathematical model of the multi-machine system that you want to control in PowerFactory? If you have the model, then the knowledge of the model can probably be used to tune the parameters of the PID controller.

Sir I am taking the standard IEEE 9bus system as my test system.I am integrating a BESS into it and for the BESS controller I want to tune the parameters of PID controller.

From the DSL block of BESS controller, I want to tune the parameters of PID controller using DPL.

If you have the differential equations that describe the state-of-charge of the battery energy storage system, it would help in the design and tuning of the PID controller.

We have software available for that, which requires you to perform open loop step tests, check out the PID Tuner