
412 Electrotechnical Systems
Three scopes are set for observing UPFC operation, which is initiated by clicking
Show Scopes. The scope STATCOM with four axes shows: by the rst axis—the
sum of the inverter output voltages, the voltage on the bus B1, the STATCOM output
current; by the second axis—the voltage across one of the capacitors; by the third
axis—the actual and the reference values of the reactive power (the second signal is
not actual in this mode); by the fourth axis—the actual and the reference voltages
in PCC. The scope SSSC with six axes shows: by the rst axis—the SSSC output
voltage; by the second axis—the SSSC current; by the t ...