HMC6 Power Management Controller User Manual
Page 85 of 87
12.
COMMISSIONING
12.1
STEP 1. SINGLE UNIT DEBUGGING
a)
Check the parameter configuration of the controller;
b)
Check the gen-set connections and MSC CAN connection lines between the units. (E.g. if 3 generators are
correctly connected, SYNC screen will display Module Number: 3).
c)
Start the genset in semi-auto mode, check if engine and generator data is normal;
d)
Start the genset in semi-auto mode, check if switch opens and closes normally;
e)
Start the genset in semi-auto mode, after closing the breaker, check if generator frequency can be
adjusted to the rated frequency (e.g. set the rated frequency as 52Hz/48Hz);
f)
Start the genset in semi-auto mode, after closing the breaker, check if generator voltage can be adjusted
to the rated voltage (e.g. set the rated voltage as 240V/220V)
g)
Start the genset in semi-auto mode, after closing the breaker, check if power factor, active power and
reactive power are normal; if negative value occurs, check generator voltage and current phase sequence,
current transformer incoming line direction, current transformer secondary current dotted terminal;
12.2
STEP 2: SEMI-AUTO PARALLEL OPERATION OFF-LOAD
a)
Semi-Auto close parallel sets, check that the units synchronization is balanced and breaker close impulse
current is not too high;
b)
During parallel operation off load, check that there is no high circumfluence on HMC6 current screen;
c)
During parallel operation off load, check if the output of active and reactive power is equal to zero; if it is
not, then check if there is power oscillation; if there is, adjust the gain and stability values of engine, or
adjust engine GOV or generator AVR gain and stability potentiometer to avoid active and reactive power
oscillation; output close to 0.
12.3
STEP 3: SEMI-AUTO PARALLEL OPERATION ON-LOAD
a)
Semi-Auto close parallel sets, perform on-load test and check if active and reactive power is evenly
distributed between all the gensets
b)
Semi-Auto close parallel sets, perform ramp on-load test to see if there is high overshoot or power
oscillation during this period; if there is, regulate Load Ramp via PC software.
c)
Semi-Auto close parallel sets, perform ramp off-load test to see if gen-set breaker opens after reaching
minimum set value (%);
d)
Semi-Auto close parallel sets, perform impact load test and damp load test to check if there is power
oscillation
12.4
STEP 4: AUTOMATIC PARALLEL OPERATION
When the controller is in auto status, if there is no power on busbar, it will carry out automatic parallel, start
and stop operation.
a)
Start the genset which has the highest priority or shortest running time according to the start mode.
b)
The genset which has the second highest priority or second shortest running time will be started if the load
has exceeded the set value or the HC request has exceeded the set value.
c)
After the genset has started up, synchronization, parallel and share load process will beginning.
