QLD Rail
Energy, Rail Infrastructure
Corinda and Caboolture
Yuggera and Turrbal
QLD
Corinda and Caboolture Substation Upgrades
DEGNAN has completed site integration works for the Corinda and Caboolture Substation upgrade, a vital milestone in securing reliable power for Queensland’s railway network.
These critical projects are part of a major Queensland Rail upgrade program and our contribution showcases our commitment to excellence and resilience in rail infrastructure.
Community Connection
Beyond its technical advancements, the Queensland Rail also adorned the building with vibrant murals by local artists The Brightsiders, celebrating the region’s unique flora and fauna as part of the rail operator’s Positive pARTnerships program.
We’re proud to continue our partnership with Queensland Rail to deliver critical, beautiful, and enduring infrastructure for local communities.
Key Features Corinda
Construction of a new switch room
Installation of a new auxiliary supply transformer and LV main distribution board
New overhead line masts and three new portals
High-voltage isolators and extensive cabling for HV, LV, and communication systems
Replacement of legacy Air Insulated Switchgears with environmentally friendly GIS technology
Key Features Caboolture
New prefabricated switch room housing modern 50kV Gas Insulated Switchgear (GIS)
Two new high-capacity traction power transformers with containment bunds and firewalls
11 new overhead line masts and high-voltage isolators
Oil/water separation systems
Comprehensive conduit and cabling network
Upgraded earthing and lightning protection systems
Civil and structural works to accommodate the new infrastructure
At Caboolture, Degnan was responsible for the site integration construction work including managing the Switchgear Contractor Interface and Transformer Contractor Interface.
The wider, transformational project included a new switch room containing Gas Insulated Switchgear, two high-voltage Centre-Tapped Transformers with containment bunds and firewalls, overhead line masts, oil/water separation systems, extensive conduit and cabling, and civil upgrades to the facility.
Degnan has also completed major works at the Corinda Feeder Station supporting the Queensland Rail (QR) network. The works included a new switch room, auxiliary supply transformer, LV distribution board, overhead line masts, high voltage isolators, and an upgraded conduit system. These upgrades future-proof the QR network by providing backup power for the Cross River Rail project and other major initiatives.
Overcoming Challenges Delivering upgrades in live operational environments required careful planning and precision:
Earth grid management: Temporary configurations were modelled to maintain safety during trenching and civil works.
Stakeholder coordination: Close collaboration with Queensland Rail, switchgear suppliers and Energex ensured smooth shutdowns and safe cutovers.
Program efficiency: Critical works were sequenced within tight windows to maintain operational safety and minimise disruption.
History
- The existing Corinda Feeder Station is the oldest in the network, being constructed in the late 1970s.
- Caboolture Feeder Station is the third oldest and has been in operation since 1982.
