Transend - Appendix 5 Renewal capital expenditure - Australian ...
Transend - Appendix 5 Renewal capital expenditure - Australian ...
Transend - Appendix 5 Renewal capital expenditure - Australian ...
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1 BACKGROUND<br />
0BInvestment Evaluation Summary<br />
TNM-GS-809-0720<br />
Burnie Substation is critical to ensuring a secure and reliable electricity supply to customers in north-west Tasmania.<br />
Burnie Substation 110 kV provides:<br />
� an interconnection to Burnie Substation 220 kV via two 90 MVA auto-transformers (these transformers are currently<br />
being replaced with a single transformer under a separate project);<br />
� transmission lines to Emu Bay, Hampshire (radial), Port Latta, Sheffield and Smithton substations; and<br />
� two 110/22 kV transformers that supply connections to Aurora Energy.<br />
Figure 1 presents the schematic diagram of the north-west Tasmanian transmission network that connects to Burnie<br />
Substation.<br />
Figure 1 – North-west area transmission network schematic diagram<br />
The majority of the 110 kV assets in service at Burnie Substation were installed when the substation was commissioned<br />
in 1952.<br />
2 PROJECT OVERVIEW<br />
The planned redevelopment of Burnie Substation 110 kV primarily includes the replacement of 110 kV circuit breakers,<br />
current transformers, and protection and control equipment and the installation of voltage transformers. The substation<br />
redevelopment will improve the security and reliability of electricity supply by replacing assets that are in poor condition<br />
and susceptible to failure.<br />
© <strong>Transend</strong> Networks Pty Ltd 3 of 12