Three Phase Voltage Unbalance Simulator
- This simulator provides the values of 5 types of power system unbalance as the system voltages Va, Vb, Vc, and neutral N are manipulated. Va, Vb, Vc and neutral N can be moved to change the system state.
- The maximum deviation unbalance of phase-to-neutral voltages (DEV_LL), phase-to-phase voltages (DEV_LN), phase angles (DEV_Theta), and the magnitudes of the sequence component ratios V0/V1 and V2/V1, are under the "Number" list displayed in the window on the left.
- The point G is the centroid of the Va-Vb-Vc triangle and represents the neutral point of no zero sequence. When the neutral is on the centroid, there is no zero sequence present. The phasors of V0, V1, and V2 share an origin at the centroid.
- The point H is the triangle Circumcenter and represents the neutral point of zero phase unbalance. When the neutral is on the circumcenter, the phasors Va, Vb, and Vc have the same magnitude. This is achieved with phase-to-neutral connected regulators.
- The point F is the triangle Fermat point and represents the neutral point of zero angle unbalance, where the phase angles are all 120. When the neutral is at this point, the zero and negative sequence phasors have the same magnitude and are conjugate with respect to the positive sequence phasor.