## Single-Phase Short-Circuit Power and Current Calculation

In this section, S¯sc1 and I˙sc1 are calculated considering that the Vsource element is at a single-phase short-circuit condition in phase A, as shown in Figure 5.

Figure 5: Vsource Element at a Single-Phase Short-Circuit Condition

The single-phase short-circuit current can be defined as:

From Figure 5, applying KVL on phase A, one can obtain:

From Equation 20, it is possible to obtain the single-phase short-circuit current magnitude as function of the magnitude of the self-impedance:

The single-phase short-circuit power is defined as follows.

The single-phase short-circuit power magnitude can be obtained as function of the magnitude of the self-impedance:

To obtain S¯sc1 and I˙sc1 as function of Z¯0 e Z¯1, the relation between Z¯s and the pair Z¯0 and Z¯1 suffice, as shown in Equation 26, derived from the relations found in (8).