HI, I am studying the fixedload example in the pscad. the fourth fixed load is simulating the inductive load - modelling as a constant power load. the configurations is
Also, from the online help system, I know that
Therefore, since the NP,NQ K_PF,K_QF is zero. it mean that P will stay constant as P_O, and Q will stay consant as Q_O. But from the simulation results. P and Q is varying with time. Why this happens?
The voltage and frequency is