Due to increasing community and government concern over Coronavirus, Engineers Australia has decided to temporarily suspend all face-to-face events. This includes events which meet our previously imposed attendee limits. We will continue to offer members access to our online events and services such as EAXchange. We are also working hard to deliver more for our members in this area over coming months.
Tribute power station was the last of the major hydro power schemes to be developed in Tasmania. The station was commissioned in 1995 and comprises of a single underground 92MVA generating unit. 13.8kV busbars are used to connect the alternator to the above ground setup transformer for connection to the 220kV transmission system.
On the 24th August 2019 a phase-to-phase fault developed on the 13.8kV alternator stator winding, which was correctly detected and cleared by the unit protection schemes. Significant damage was sustained to the alternator, predominately from the large fault currents that flowed to the fault site, resulting in a forced outage of 3½ months for fault investigation and repair.
Prior to the fault the generator was assessed to be in good condition with a remnant life expectancy in excess of 25years and a low probability of failure.
As with any significant failure the question is asked; could this event have been predicted and prevented? This presentation will detail findings of the root cause analysis, the extent of damage sustained and the repairs required to restore this machine.
Marc is responsible for the risk management of the alternators, circuit breaker and overhead services owned and operated by Hydro Tasmania. He has worked with Hydro Tasmania for over 20 years, predominately in production and asset management
Please note: Webinar details are currently being confirmed. Follow the usual process to register for this event, and all registered guests will be sent details ahead of the event.
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