Australia’s largest electricity distributor Ausgrid is decarbonising its grid operations by utilising Schneider Electric‘s SF6-free distribution switchgear.
A synthetic gas, SF6 is widely used in switchgear to provide electrical insulation. Just 1kg of SF6 leaked into the atmosphere has the same warming effect as 25,200kg of CO2.
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Schneider Electric vice president power systems James Hunt explains, “Since the 1980s, Ring Main Units (RMUs) have used SF6 as the insulation medium due to its superior dielectric properties.
“Unfortunately, SF6 gas is 23,500 times more potent than CO2, posing a substantial environmental risk if leaked. Until now, no viable alternative existed. Our Pure Air SF6-free switchgear changes that, demonstrating our ongoing commitment to providing sustainable solutions for our partners.”
Engaged by Ausgrid, Schneider Electric developed an SF6-free kiosk pad substation, designed with internal arc containment to ensure any HV arcs or faults are contained within the kiosk. This crucial safety feature is designed to protect both operators and the public, requiring no modifications to Ausgrid’s existing enclosure.
“This is one of the first internally arc-rated SF6-free kiosk designs on the market, showcasing our capability to create a greener network across Australia. This solution will effectively prevent 35,000 kg of CO2-eq from entering Ausgrid’s network, while maintaining the same high levels of safety and operation,” Hunt says.
Ausgrid head of design and engineering services Brett Hawkeswood says, “I am really delighted that we have had this opportunity to team with Schneider on our journey towards decarbonisation. Not only are we reducing our reliance on SF6 gas, we are also strengthening important safety features on the network.”
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The new kiosk also features automation capabilities with Schneider’s T300 technology, allowing the control room to perform switching commands remotely. Additionally, it integrates seamlessly with Ausgrid’s Advanced Distribution Management System (ADMS) provided by Schneider Electric, ensuring optimal grid reliability.
