The Heywood Interconnector RIT-T considered nine credible options. Table 3.1 below summaries the credible options considered by ElectraNet and AEMO. Table 3.1 Summary of credible options considered Description of credible option Installation of a 3rd 370 MVA 500/275 kV transformer at Heywood and 500 kV bus tie Option 1a 100 MVAr capacitor at South East substation and reconfiguration of the 132kV network between Snuggery-Keith and Keith-Tailem Bend (South Australia) Installation of a 3rd 370 MVA 500/275 kV transformer at Heywood and 500 kV bus tie Option 1b 275 kV series compensation in South Australia and reconfiguration of the 132kV network between and Keith-Tailem Bend (South Australia) Option 2a Construction of a 3rd 160 MVA 275/132 kV transformer at South East substation plus option 1a Option 2b Construction of a 3rd 160 MVA 275/132 kV transformer at South East substation plus option 1b Construction of a new Krongart-Heywood 500 kV interconnector and associated 275 kV works between Option 3 Krongart and Tungkillo (South Australia). Option 4 Option 1a minus the installation of 3rd 370 MVA 500/275 kV transformer at Heywood Option 5 Five-year, 200 MW demand management program beginning in 2013 plus option 1b deferred by two years Control scheme applying to specific wind generation in South Australia and the South East substation and 500 Option 6a kV bus tie at Heywood Control scheme applying specific wind generation in South Australia and the South East substation plus option Option 6b 1b minus the installation of 3rd 370 MVA 500/275 kV transformer at Heywood Source: Heywood Interconnector RIT-T project assessment conclusions report, executive summary, p. 22. The Heywood Interconnector RIT-T project assessment conclusions report also considered the potential of alternative options proposed in stakeholder submissions. This included consideration of a stand-alone South
The Heywood Interconnector RIT-T considered nine credible options. Table 3.1 below summaries the credible options considered by ElectraNet and AEMO. Table 3.1 Summary of credible options considered Description of credible option Option 1a Installation of a 3rd 370 MVA 500/275 kV transformer at Heywood and 500 kV bus tie 100 MVAr capacitor at South East substation and reconfiguration of the 132kV network between Snuggery-Keith and Keith-Tailem Bend (South Australia) Option 1b Installation of a 3rd 370 MVA 500/275 kV transformer at Heywood and 500 kV bus tie 275 kV series compensation in South Australia and reconfiguration of the 132kV network between and Keith-Tailem Bend (South Australia) Option 2a Construction of a 3rd 160 MVA 275/132 kV transformer at South East substation plus option 1a Option 2b Construction of a 3rd 160 MVA 275/132 kV transformer at South East substation plus option 1b Option 3 Construction of a new Krongart-Heywood 500 kV interconnector and associated 275 kV works between Krongart and Tungkillo (South Australia). Option 4 Option 1a minus the installation of 3rd 370 MVA 500/275 kV transformer at Heywood Option 5 Five-year, 200 MW demand management program beginning in 2013 plus option 1b deferred by two years Option 6a Control scheme applying to specific wind generation in South Australia and the South East substation and 500 kV bus tie at Heywood Option 6b Control scheme applying specific wind generation in South Australia and the South East substation plus option 1b minus the installation of 3rd 370 MVA 500/275 kV transformer at Heywood Source: Heywood Interconnector RIT-T project assessment conclusions report, executive summary, p. 22. The Heywood Interconnector RIT-T project assessment conclusions report also considered the potential of alternative options proposed in stakeholder submissions. This included consideration of a stand-alone South
Heywood%20RIT-T%20determination_1.DOCX