While learning harmonic analysis in PSCAD, one question came to my mind: What happens after the harmonic study is completed? A PSCAD simulation helps us understand harmonic behavior under specific operating conditions. However, real power systems do not remain the same. Loads switch on and off, EV chargers connect to the grid, solar generation changes throughout the day, and new equipment is added over time. Because of these changes, harmonic levels can also change continuously. This is where Ar