This document discusses a preliminary study for connecting the South Toowoomba (SOTO) and Central Toowoomba (CETO) zone substations with high temperature superconductors (HTS). It includes an aerial view of the existing 33kV network between SOTO and CETO, which are approximately 3km apart. The proposed HTS system would involve installing an underground 11kV HTS cable between SOTO and CETO to replace the existing overhead/underground 33kV feeders. The HTS cable would have capacity to transfer up to 60MVA of power and be implemented in two stages by 2025 and 2035.
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SOTO-CETO
1. Ergon Energy High Temperature
Superconductors (HTS) Preliminary Study No2
11kV Bus Connection of SOTO and CETO
Zone Substations
Anthony Ryan, CU/SD/AM/EE
AMSC-QUT-EE Workshop
Brisbane, December 2012
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Contents
? Aerial View and Existing Network
? General Overview and Proposed 11kV HTS System
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South Toowoomba & Central Toowoomba
Aerial View and Existing 33kV System
Alderley Street
RuthvenStreet/New
EnglandHwy
W
estStreet
SOTO
CETO
HumeStreet
NeilStreet
James Street/Warrego Highway
Public Hospital
Golf Course
Market Place
Herries St
2x33kV OH/UG feeders SOTO-CETO (l~3km)
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General Overview and Proposed 11kV HTS System
110/33kV
37/60MVA
110/33kV
37/60MVA
3 x 33/11kV
10/11.5MVA
SOTO
11kV 40-60 MVA
HTS Cable (l~3km)
110/11kV 110/11kV
CETO
Future
110/11kV
ZSS
Future
110/11kV
PTF
HTS Timing
?Stage 1
?Smax: 40MVA
?T: 2020-2025
?Stage 2
?Smax: 60MVA
?T: 2030-2035
