Analysis and calculation for LV auxiliary power system short-circuit current of the fossil fuel power plant

According to the appendix N of reference [3], the three-phase short-circuit current peak value for the power center is as follows:

i i i Ich ch B ch D ch B B e B+⋅ ⋅ ′′2 6K I 2 10 3. (2)

where ich ⋅ B is the short-circuit impulse current of the transformer; ich ⋅ D is the short-circuit impulse current of the motor; and Kch ⋅ B is the short-circuit impulse coefficient of the transformer.