
382 Electrotechnical Systems
and (2.25), the wave impedance is Z
c
= (0.93/12.74)
0.5
× 10
3
= 270.2 Ω and the natural
load is NP = 765
2
× 10
6
/270.2 = 2.17 GW.
It is worth noting that, in practice, the capacitors for series compensation have to
be protected from overvoltage. Such a protection is fullled with the help of varistors
and lighting arresters. One can nd the corresponding model in the demonstrational
model Series-Compensated Transmission System.
The block Simplied Synchronous Machine in pu is used for SG simulation in
model6_19, and the blocks Distributed Parameters Line are used for simulation
of the transmission line sections. The section ...