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When you compare tests measurements to simulations using WECC models (i.e. REECA and REPCA models), the parameters you should modify are:
REECB REPCA Tunable Parameters pfflag |vflag |qflag ||refflag ||Local || Plant 0 |0 | 0 || 0 || Kqv || Kp, Ki 0 |0 | 0 || 1 || Kqv || Kp, Ki 0 |0 | 1 || 0 || Kqv,Kvp,Kvi || Kp, Ki 0 |0 | 1 || 1 || Kqv,Kvp,Kvi || Kp, Ki 0 |1 | 0 || 0 || Kqv || Kp, Ki 0 |1 | 0 || 1 || Kqv || Kp, Ki 0 |1 | 1 || 0 || Kqv,Kqp,Kqi,Kvp,Kvi || Kp, Ki 0 |1 | 1 || 1 || Kqv,Kqp,Kqi,Kvp,Kvi || Kp, Ki
Normally, in the studies I have seen only plant parameters are modified. The local parameters are the ones the manufacturer gives or should they be modified too?