Transend - Appendix 5 Renewal capital expenditure - Australian ...

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CONTENTS 0BInvestment Evaluation Summary TNM-GS-809-0720 CONTENTS........................................................................................................................................................................ 2 1 BACKGROUND....................................................................................................................................................... 3 2 PROJECT OVERVIEW.......................................................................................................................................... 3 3 PROJECT TIMING................................................................................................................................................. 4 4 INVESTMENT NEED ............................................................................................................................................. 4 4.1 CIRCUIT BREAKERS ........................................................................................................................................... 5 4.2 VOLTAGE TRANSFORMERS................................................................................................................................. 5 4.3 CURRENT TRANSFORMERS ................................................................................................................................. 7 4.4 DISCONNECTORS................................................................................................................................................ 7 4.5 POST INSULATORS.............................................................................................................................................. 7 4.6 CONTROL BUILDING........................................................................................................................................... 7 4.7 PROTECTION AND CONTROL .............................................................................................................................. 8 4.8 SUPERVISORY CONTROL AND DATA ACQUISITION .............................................................................................. 9 5 CUSTOMER CONSULTATION............................................................................................................................ 9 6 BENEFITS ................................................................................................................................................................ 9 7 OPTIONS ANALYSIS........................................................................................................................................... 10 7.1 OPTION 1: MANAGE EXISTING 110 KV ASSETS AND DEFER REPLACEMENT ...................................................... 10 7.2 OPTION 2: REPLACE SELECTED 110 KV ASSETS IN-SITU .................................................................................. 11 7.3 OPTION 3: REPLACE ALL 110 KV ASSETS IN-SITU............................................................................................. 11 8 OPTION ESTIMATES .......................................................................................................................................... 12 9 PREFERRED OPTION ......................................................................................................................................... 12 © <strong>Transend</strong> Networks Pty Ltd 2 of 12
1 BACKGROUND 0BInvestment Evaluation Summary TNM-GS-809-0720 Meadowbank Substation provides electricity supply to customers connected in the Gretna, Hamilton, Bothwell, Ouse and Oatlands areas. In addition, the substation provides a connection point for power generated from Meadowbank Power Station. The majority of 110 kV assets in service at Meadowbank Substation were installed when the substation was commissioned in 1963. Figure 1 presents an image of Meadowbank Substation. Figure 1 - Aerial view of Meadowbank Substation 2 PROJECT OVERVIEW The planned redevelopment of Meadowbank Substation includes the replacement of 110 kV circuit breakers, voltage transformers and post insulators and protection and control equipment. The redevelopment will address safety issues and improve the reliability of electricity supply by replacing assets that are in poor condition and susceptible to failure. This project includes the following major works at Meadowbank Substation: � replacement of Reyrolle type 110/OS/10 110 kV circuit breakers; � replacement of Balteau type UEV110 and Ducon type PD 110 kV voltage transformers; � installation of 110 kV voltage transformers on each transmission line; � refurbish and retain the ABB, Stanger and Switchgear Pty Ltd disconnectors; � replacement of multi-piece post insulators; � replacement of the 110 kV Tarraleah – Meadowbank transmission line protection; © <strong>Transend</strong> Networks Pty Ltd 3 of 12
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APPENDIX 5 Transend, Renewal capita
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Renewal Capital Expenditure TNM-GR-
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Figure 4 - Overview of the Reyrolle
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Table 3 - Circuit criticality ratin
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Figure 6 - Capacitive voltage trans
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Current transformer make / type Mod
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1.6.5 Protection and control Renewa
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CONTENTS 0BInvestment Evaluation Su
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0BInvestment Evaluation Summary TNM
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Page 38 and 39: 5 CUSTOMER CONSULTATION 0BInvestmen
Page 40 and 41: � implementation of revised maint
Page 42 and 43: Table 1 - Summary of economic analy
Page 44 and 45: CONTENTS 0BInvestment Evaluation Su
Page 46 and 47: 0BInvestment Evaluation Summary TNM
Page 52 and 53: 7.3 OPTION 3 - STAGED REPLACEMENT O
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Page 64 and 65: 6 BENEFITS The direct benefits of r
Page 66 and 67: 7.2.3 DRAWBACKS The option has the
Page 68 and 69: Figure 2 - Option 3: single line di
Page 70 and 71: This option includes: � installin
Page 73 and 74: INVESTMENT EVALUATION SUMMARY 0BInv
Page 75 and 76: 1 BACKGROUND 0BInvestment Evaluatio
Page 77 and 78: 4.1 CIRCUIT BREAKERS 0BInvestment E
Page 81 and 82: � reduced burden on spare parts m
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Page 90 and 91: � replacement of the 110 kV Meado
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Page 104 and 105: 4.2 VOLTAGE TRANSFORMERS The 110 kV
Page 106 and 107: 4.3 CURRENT TRANSFORMERS 0BInvestme
Page 110 and 111: The drawbacks for this option are t
Page 113 and 114: INVESTMENT EVALUATION SUMMARY 0BInv
Page 115 and 116: 1 BACKGROUND 0BInvestment Evaluatio
Page 119 and 120: 4.1.2 TUNGATINAH SUBSTATION 0BInves
Page 121 and 122: 4.3.2 TUNGATINAH SUBSTATION The 110
Page 123 and 124: Tarraleah-New Norfolk No. 1 110 kV
Page 125 and 126: � the possibility of a 220 kV con
Page 127: Table 2 - Summary of Transend’s c
Page 134 and 135: 3.2.2 110 KV BUS BAR PROTECTION SCH
Page 136 and 137: 5. CUSTOMER CONSULTATION 0BInvestme
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Table 3 - Summary of NPV cost analy
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CONTENTS 0BInvestment Evaluation Su
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� loss of back-up protection func
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INVESTMENT EVALUATION SUMMARY TITLE
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1 BACKGROUND 0BInvestment Evaluatio
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INVESTMENT EVALUATION SUMMARY TITLE
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1 BACKGROUND 0BInvestment Evaluatio
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Burnie-Waratah 110 kV Transmission
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CONTENTS Burnie-Waratah 110 kV Tran
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1 BACKGROUND Burnie-Waratah 110 kV
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2.3 MAINTENANCE Burnie-Waratah 110
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Burnie-Waratah 110 kV Transmission
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