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17 ECONOMICAL FUEL CONSUMPTION DESCRIPTION
Economical fuel consumption function is enabled by "Economy Fuel" setting of the controller. All sets
shall be set as the same economical fuel consumption parameters, including "Economy Fuel",
"Economy Fuel (%)", and "Economy Swap (W)".
Scheduling running principles:
a.
First of all, use the fewest parallel sets if it is possible. If one set is enough to satisfy the running
conditions, don't use two. The rest can be done in the same manner.
b.
Secondly, satisfy economical fuel consumption percentage. The load percentage of the chosen
running plan shall not be bigger than and shall be closest to the economical fuel consumption
percentage.
c.
It shall be satisfied that the total difference of the two plans' rated powers shall be bigger than the
exchange power when the better running plan is employed.
d.
Start/stop scheduling parameters (scheduling start percentage, scheduling stop percentage,
scheduling start available power, scheduling stop available power, online unit number) shall still work
when the economical fuel consumption enable is active.
e.
"Economy Fuel" and "Balance Hours" scheduling cannot be used at the same time. When
"Economy Fuel" is enabled, "Balance Hours" shall not be active.
e.g. The rated power of Genset 1 is 100kW, Genset 2 300kW, Genset 3 500kW. Settings: "Economy Fuel" enabled,
"Economy Swap (W)" 200kW, "Economy Fuel (%)" 50%, "Call More Sets (%)" 85%, "Call Less Sets (%)" 50%.
Current load is 0kW and all of them are power-off. Then Genset 1 starts and loads.
Current load is 60kW, and Genset 1 loading percentage is 60%, which is bigger than "Economy Fuel (%)" 50%. Choose the
best running plan Genset 2. Previous plan's rated power is 100kW and the best plan's is 300kW, so the exchange power
is not less than 200kW. Genset 2 starts and loads, and Genset 1 unloads and stops.
Current load is 160kW, and Genset 2 loading percentage is 53.3%, which is bigger than "Economy Fuel (%)" 50%. Choose
the best running plan Genset 3 and it satisfies the exchange power. Genset 3 starts and loads, and Genset 2 unloads and
stops.
Current load is 260kW, and Genset 3 loading percentage is 52%, which is bigger than "Economy Fuel (%)" 50%. Then
choose the best plan Genset 1 + Genset 3. Previous plan's rated power is 500kW and this one is 600kW, so the exchange
power is less than 200kW, genset 3 still takes loads separately.
Current load is 310kW, and Genset 3 loading percentage is 62%, which is bigger than "Economy Fuel (%)" 50%. Then
choose the best plan Genset 2 + Genset 3. Previous plan's rated power is 500kW and this one is 800kW, which conforms
to the exchange power. Genset 2 starts and loads with Genset 3 together.
HGM9510N/HGM9530N Paralleled Genset Controller User Manual
Page 101 of 116
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