Question

Positive-sequence components consist of three phasors with _____ magnitudes and _____ phase displacement in positive sequence; negative sequence components consist of three phasors with _____ magnitudes and _____ phase displacement in negative sequence; and zero-sequence components consist of three phasors with _____ magnitudes and _____ phase displacement.

Short answer

Positive-sequence components consist of three phasors with equal magnitudes and $\pm {120}^{\circ }$phase displacement in positive sequence; negative sequence components consist of three phasors with equal magnitudes and$\pm {120}^{\circ }$phase displacement in negative sequence; and zero-sequence components consist of three phasors with equal magnitudes and zero phase displacement.

Step-by-step solution

Fact about sequence components of three phase system

There are three components each of the three phase power system, wherein each component has a positive sequence, negative sequence and a zero sequence component.

Magnitude and phase displacement of each sequential component

All the three components consist of three phasors each of equal magnitudes, out of which positive sequence and negative sequence components are displaced by $\pm {120}^{\circ }$and the zero sequence component has zero phase displacement.