Cummins Asia Pacific Magazine - Issue 1 2023

At the heart of the new Esperance
hybrid renewable power station are
11 high-efficiency Cummins HSK78G
gas generator sets delivering 22 MW.
E honing in on hybrid
Giving
it the
gas
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If you line up all the
OEMs, Cummins has
got it right in terms of
customer focus.
Cummins Perth’s Bhavani Sambhara
(left) with Cummins Esperance field
service technician Rob Foo and power
station operator Brendan Weckert.
Pacific Energy’s managing director of remote power
business Grant Farquhar (left) with Cummins Perth
sales engineer Bhavani Sambhara.
Esperance renewables
hub integrates a 4 MW
solar farm and two
4.5 MW wind turbines.
Cummins released the HSK78G in 2019, a
completely new design from the skid up
with a power density of up to 2 MW from
the compact 78-litre, V12 gas engine.
This engine is not a derivative of Cummins’
high horsepower, 78-litre QSK78 diesel unit;
it is designed specifically for gas.
The HSK78G has the industry’s longest
major overhaul service cycle of 80,000 hours
and is offered with ratings (50 Hz) of 2 MWe,
1.8 MWe, and 1.6 MWe.
Cummins Perth sales engineer Bhavani
Sambhara points out that high electrical
efficiency of up to 43.8% (50 Hz) is achieved
on a wide range of pipeline natural gas
down to 70 MN (Methane Number) without
impacting power output and efficiency.
New technology and electronic engine
management systems allow the generator
to automatically manage gas fuel quality
fluctuations to ensure zero loss in
performance.
Peak efficiency is maintained by automatic
engine adjustments, which account for
fuel quality changes and quick load-step
performance, without the need to calibrate
or switch off the engine.
“The generator has high ambient capability,
able to run efficiently at 55 deg.C without
derating at an altitude of 150 metres,”
says Sambhara.
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