Power Management And Workflow Chart; Equal Load Sharing; Fixed Power Output - Smartgen HMC6 User Manual

10. POWER MANAGEMENT AND WORKFLOW CHART

There are two kinds of power management mode: Equal load sharing and Base load.
10.1

EQUAL LOAD SHARING

Equal load sharing is active both in auto mode and semi-auto mode. In both cases, load sharing is carried
out via the internal CANbus line(s).
There are two kinds of equal load sharing ways: kW load sharing and kVar load sharing.
a) kW load sharing: the equal load sharing of active power of each unit on busbar can be adjusted via GOV or
relay output.
b) kVar load sharing: the equal load sharing of reactive power of each unit on busbar can be adjusted via AVR
or relay output.
10.2

FIXED POWER OUTPUT

Each unit can be selected as running with fixed power. This can be done from the panel parameters or via
a discrete input.
The unit selected for fixed power operation will automatically be set in SEMI-AUTO. Only one generator per
independent busbar can run with base load.
Active power output value and reactive power output value can be set, in addition, power factor also can
be set.
When the generator breaker is closed, the generator power will be increased to the fixed power setpoint.
The following figure shows the fixed power of SG mode and DG & SG on-load diagram:
Suppose SG rated power is 1000kW, DG rated power is 500kW, the fixed min on-load percentage is 10%,
the fixed max on-load percentage is 90% and the fixed output power percentage is 80%. According to the
change of the total load, SG and SG on-load are as shown in the 5 parts of figure above:
HMC6 Power Management Controller User Manual
Fig.12– SG Fixed Power on-load Distribution Diagram
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