Electrical System

1.10 A three-phase Y-connected power system has rated numbers of 50MVA and 120kV. Calculate the relative value of a three-phase apparent power of 40MVa for (a) The basis is the apparent three-phase power of the system (b) The basis is the apparent power per phase of the system. 1.11 A three-phase ...

We can apply the calculation method of mixed conductors, by considering wire A as consisting of 2 strands a,a…, then calculate KTN( D m ) and BTN(D s ) as above. The result for the line in Figure 2.4 is as follows: phase inductance (wire - neutral) is: L  2 x 10  7 ln D m ​​(H/m) D n S ...