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

More documents

Recommendations

Info

CONTENTS 0BInvestment Evaluation Summary TNM-GS-809-0720 CONTENTS 2 1 BACKGROUND 3 2 PROJECT OVERVIEW 4 3 PROJECT TIMING 5 4 INVESTMENT NEED 5 4.1 SUMMARY.......................................................................................................................................................... 5 4.2 SUPPLY TRANSFORMERS .................................................................................................................................... 5 4.3 CIRCUIT BREAKER.............................................................................................................................................. 5 4.4 CURRENT TRANSFORMERS ................................................................................................................................. 6 4.5 HIGH VOLTAGE ASSETS...................................................................................................................................... 6 4.6 PROTECTION AND CONTROL SYSTEMS................................................................................................................ 7 4.7 OIL CONTAINMENT............................................................................................................................................. 7 5 CUSTOMER CONSULTATION 8 6 BENEFITS 8 7 OPTIONS ANALYSIS 8 7.1 OPTION 1: STAGED REDEVELOPMENT................................................................................................................. 8 7.2 OPTION 2 - REPLACE SELECTED ASSETS IN-SITU ................................................................................................. 9 7.3 OPTION 3 - REPLACE ALL ASSETS IN-SITU......................................................................................................... 10 7.4 OPTION 4 - REPLACE ALL ASSETS AT A GREENFIELD LOCATION ....................................................................... 11 8 OPTION ESTIMATES 11 9 PREFERRED OPTION 12 © <strong>Transend</strong> Networks Pty Ltd 2 of 12
1 BACKGROUND 0BInvestment Evaluation Summary TNM-GS-809-0720 Arthurs Lake Substation is critical to ensuring a secure and reliable electricity supply to the central highlands area of Tasmania. The substation supplies electricity to Hydro Tasmania’s pumping station, which pumps water from Arthurs Lake into Great Lake. The substation also provides a connection point to Aurora Energy via a 6.6 kV feeder which is stepped-up to 22 kV by a 6.6/22 kV transformer that is also owned by Aurora Energy. Arthurs Lake Substation is located within metres of Arthurs Lake and is adjacent to camping and boating facilities. The area around the substation is frequently accessed by the public for recreational purposes. In addition, the substation is located within the Central Plateau Conservation Area and as such is considered to be an environmentally sensitive site. Figure 1 presents the schematic diagram of the northern Tasmanian transmission network that connects to Arthurs Lake Substation. Figure 1 - Northern area transmission network schematic diagram SHEFFIELD PALMERSTON GEORGE TOWN HADSPEN ARTHURS LAKE TREVALLYN MOWBRAY NORWOOD AVOCA SCOTTSDALE ST. MARYS © <strong>Transend</strong> Networks Pty Ltd 3 of 12
Page 1: APPENDIX 5 Transend, Renewal capita
Page 4 and 5: Renewal Capital Expenditure TNM-GR-
Page 14 and 15: Figure 4 - Overview of the Reyrolle
Page 16 and 17: Table 3 - Circuit criticality ratin
Page 18 and 19: Figure 6 - Capacitive voltage trans
Page 20 and 21: Current transformer make / type Mod
Page 22 and 23: 1.6.5 Protection and control Renewa
Page 34 and 35: 0BInvestment Evaluation Summary TNM
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 52 and 53: 7.3 OPTION 3 - STAGED REPLACEMENT O
Page 56 and 57: CONTENTS 0BInvestment Evaluation Su
Page 62 and 63: 4.8 BUS CONDUCTOR AND FITTINGS 0BIn
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
Page 83 and 84:
0BInvestment Evaluation Summary TNM
Page 85:
Page 88 and 89:
CONTENTS 0BInvestment Evaluation Su
Page 90 and 91:
� replacement of the 110 kV Meado
Page 92 and 93:
Page 94 and 95:
Page 96 and 97:
� reduced burden on spare parts m
Page 98 and 99:
Page 100 and 101:
Page 102 and 103:
Page 104 and 105:
4.2 VOLTAGE TRANSFORMERS The 110 kV
Page 106 and 107:
4.3 CURRENT TRANSFORMERS 0BInvestme
Page 108 and 109:
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 117 and 118:
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 130 and 131:
Page 132 and 133:
Page 134 and 135:
3.2.2 110 KV BUS BAR PROTECTION SCH
Page 136 and 137:
5. CUSTOMER CONSULTATION 0BInvestme
Page 138 and 139:
Table 3 - Summary of NPV cost analy
Page 140 and 141:
Page 142 and 143:
� loss of back-up protection func
Page 144 and 145:
Page 147 and 148:
INVESTMENT EVALUATION SUMMARY TITLE
Page 149 and 150:
Page 151 and 152:
Page 153 and 154:
INVESTMENT EVALUATION SUMMARY TITLE
Page 155 and 156:
Page 157 and 158:
Burnie-Waratah 110 kV Transmission
Page 159 and 160:
CONTENTS Burnie-Waratah 110 kV Tran
Page 161 and 162:
1 BACKGROUND Burnie-Waratah 110 kV
Page 163 and 164:
2.3 MAINTENANCE Burnie-Waratah 110
Page 165:
Burnie-Waratah 110 kV Transmission
show all

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

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?