This is illustrated in the drawing below.
The characteristics of the reactive load sharing line are equivalent.
Principle
The GPC-3 supplies a voltage on the load sharing line equal to the actual load. This voltage comes from an
internal power transducer in the GPC-3. At the same time, the actual voltage on the load sharing line will be
measured by the GPC-3.
● If the measured voltage is higher than the voltage from the internal power transducer, then the GPC-3 will
increase its load in order to match the voltage on the load sharing line.
● If the measured voltage is lower than the voltage from the internal power transducer, then the GPC-3 will
decrease its load in order to match the voltage on the load sharing line.
The voltage on the load sharing line will only be different from the voltage from the internal power transducer
if two or more Multi-line 2 units are connected to the load sharing line. For the same reason, it is not necessa-
ry to change between load sharing mode and fixed frequency mode if the GPC-3 is installed in an island
mode application where the operation changes between stand-alone and load sharing mode. Then the mode
inputs can be hardwired.
Examples
These examples show that generators will balance their load depending on the signal on the load sharing
line.
Example 1:
Two generators are running in parallel. The loads of the generators are:
GPC-3 DRH 4189340587 UK
Additional functions
DEIF A/S Page 65 of 122
To Next Page
Loading...
