IEEE Power & Energy Magazine - September/October 2021 - 82

Onslow DERMS: DER Integration in Action in Western Australia (Continued)
(a)
(b)
figure S2. Onslow project: the (a) 1-MW PV system and (b) substation with energy storage system.
The DERMS incorporated weather data to proactively
smooth intermittency and prevent excess reverse power
flows breaching generator minimum loading at the central
power station. During August 2020, for example, the
daily median solar penetration at peak was approaching
90% with customer systems being curtailed 9% on
average.
Key Lessons
* Customer involvement:
˚ Conduct early, collaborative engagement
to understand
customer needs, wants, and expectations
ahead of setting project targets.
˚ Timely and transparent communication on the
need and amount of " generation management " is
120
100
80
60
40
20
required to highlight the whole of community benefits,
such as more customers being able to connect
and benefit from solar while mitigating any
sense of " loss aversion. "
˚ Raising customer understanding regarding power
system fundamentals is a challenge that goes beyond
a single project.
* A functional DERMS is technically complex and timeconsuming:
˚
It is critical to partner with vendors that have direct,
demonstrated experience as well as a shared
approach to development and operation.
Diesel
Gas
Renewable
˚ Develop use cases and provide sufficient time for
development and testing activity.
Overall, the improved outcome for
networks is visibility and control
of high DERs in tandem with traditional
infrastructure
while continuing
to provide customers with
choice and greater benefit.
figure S3. Energy generation by type in Onslow-August 2020.
82
ieee power & energy magazine
Next Steps
Horizon Power recently set the strategic
goal of achieving " zero refusals
when connecting rooftop solar by
2025. " With the capability now in
place in Onslow, it is building a transferable
model for the most viable
DER management solutions in each
of its microgrids (Figures S2 and S3).
september/october 2021
Generation Output
(Index, Max. Gen. = 100)
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IEEE Power & Energy Magazine - September/October 2021

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Contents
IEEE Power & Energy Magazine - September/October 2021 - Cover1
IEEE Power & Energy Magazine - September/October 2021 - Cover2
IEEE Power & Energy Magazine - September/October 2021 - Contents
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