Welcome to the next update for the Wide Bay region.
It was been a different world with COVID with a vast majority of us navigating working from home while still delivering our normal workloads and delivery deadlines. I hope you are all well and taking the opportunity to look for CPD opportunities nationally through several Engineers Australia’s online offerings.
As soon as we can have local face-to-face events, we will. In the meantime, I encourage you to network and get your CPD hours through Engineers Australia online events and other digital offerings, including the streaming library, EA OnDemand and a new podcast, Engineering Heroes.
Torquay 66/11kV Substation
Built in the mid-1980’s, the latest scope of work was to duplicate the existing single 66kV bus protection, and to duplicate the existing single DC supply system to reinforce the network.
The DC part of the project required to segregate existing supply to all protection and control equipment on:
• 1 x upgraded 66kV bus zone (BZ),
• 2 x existing 66kV/11kV transformers (TX’s), and;
• 3 x existing 66kV feeders
The DC system study measured the existing loads and resolved what each of the X&Y systems would supply, and sized the two new X&Y systems accordingly.
This includes allowance for a theoretical sequence of operations (significant but reasonably quick loads to the DC systems) during an outage and still being capable of a theoretical whole of 66kV bus zone trip at the end of a 10-hour outage.
The X DC system (batteries in two (A&B) strings, two (A&B) isolation panels, battery charger, and distribution board) is new and is up to current standards.The Y DC system is the existing DC system revamped with new batteries in two (A&B) strings inside the existing Magellan cabinet (with charger) and upgraded panel mounted distribution board.
The 66kV bus zone part of the project mostly left the existing single protection in place (becoming X) and a new Y relay and associated gear was installed. Retrofitting of this protection and control (P&C) panel and that of all of the other P&C panels within the 66kV BZ required individual outages to mainly segregate the gear to be supplied by X&Y DC systems (described above).
The main benefit to the community is a redundancy in DC systems to mostly separate and segregated X&Y DC systems, supplying respective X&Y protection relays, so that if either DC system should fail, the other DC system and the respective 66kV BZ, TX’s or feeder protection relays they supply will still be operational, giving a more reliable system.
The project is now constructed but we are now in the as-built phase, where we sometimes pick-up small errors which can be adjusted accordingly - as another fail-safe part of the process (on top of the rigorous test and commissioning processes) that ensures any errors are identified and rectified.
Engineers Australia established the Australian Historic Engineering Plaquing Program in 1984 as a means of bringing public recognition to engineering works of historic or heritage significance and to the engineers who created them.
This program is now called the Engineering Heritage Recognition Program. The purpose of the Program is to encourage the conservation of Australian engineering heritage and to raise community awareness of engineering and the benefits it provides.
More than 220 sites have now been recognised under this program. Have you seen our region's marker?
Lamington Bridge, Mary River, 1896
HEM: Historic Engineering Marker (to 2008)
We'd also like to extend our congratulations to a number of local members who have reached professional milestones this quarter.
Craig Paterson MIEAust CPEng NER
Pradeep Premasuriya MIEAust CPEng NER
Hemachandra Panditha MIEAust CPEng NER
Samuel Crawford MIEAust CPEng NER APEC Engineer IntPE(Aus)
Phil Bopf AMIEAust CEngA NER IntETn(Aus)
Kim Bang Nguyen MIEAust CPEng NER
Katrina Chadwick MIEAust CPEng NER
Amid Moshrefzadeh MIEAust CPEng NER
Wide Bay are hoping to hold a site visit in the near future pending COVID restrictions and will keep you updated.
If you have a topic to present on or want to get more involved in the local engineering professional community, please get in contact with us. The committee meets regularly and always welcomes new members - please email [email protected] and we will be in contact with you.
Maria Fuchs MIEAust CPEng
Chair, Wide Bay Regional Committee