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110842INTER-REGIONAL TRANSFER06/11/2023 12:47:31 PM
Inter-Regional Transfer limit variation - Directlink - NSW Region
AEMO ELECTRICITY MARKET NOTICE
Inter-Regional Transfer limit variation - Directlink - NSW Region
There has been an unplanned outage of the No 3 Leg of Directlink .
The following constraint set was invoked at 1245 hrs 06/11/2023
N-MBTE_1
The constraint set contains the following interconnector on the left hand side.
N-Q-MNSP1
Refer AEMO Network Outage Scheduler (NOS) for further details.
Manager NEM Real Time Operations
Inter-Regional Transfer limit variation - Directlink - NSW Region
There has been an unplanned outage of the No 3 Leg of Directlink .
The following constraint set was invoked at 1245 hrs 06/11/2023
N-MBTE_1
The constraint set contains the following interconnector on the left hand side.
N-Q-MNSP1
Refer AEMO Network Outage Scheduler (NOS) for further details.
Manager NEM Real Time Operations
110686INTER-REGIONAL TRANSFER02/11/2023 05:07:52 PM
Inter-regional transfer limit variation - Ararat - Crowlands 220kV line in Vic region - 02/11/2023
AEMO ELECTRICITY MARKET NOTICE
Inter-regional transfer limit variation - Ararat - Crowlands 220kV line in Vic region - 02/11/2023
A planned outage of Ararat - Crowlands 220kV line in the Vic region was scheduled from 0600 hrs 01/11/2023 to 1700 hrs 03/11/2023.
The outage has been completed and Ararat - Crowlands 220kV line returned to service at 1705 hrs 02/11/2023
Constraint set(s) revoked: V-ARCW
This constraint set(s) contains equations with the following interconnectors on the LHS.
T-V-MNSP1
V-SA
V-S-MNSP1
VIC1- NSW1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
Inter-regional transfer limit variation - Ararat - Crowlands 220kV line in Vic region - 02/11/2023
A planned outage of Ararat - Crowlands 220kV line in the Vic region was scheduled from 0600 hrs 01/11/2023 to 1700 hrs 03/11/2023.
The outage has been completed and Ararat - Crowlands 220kV line returned to service at 1705 hrs 02/11/2023
Constraint set(s) revoked: V-ARCW
This constraint set(s) contains equations with the following interconnectors on the LHS.
T-V-MNSP1
V-SA
V-S-MNSP1
VIC1- NSW1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
110678CONSTRAINTS02/11/2023 12:08:31 PM
Updated Victorian system normal voltage oscillation limit
AEMO ELECTRICITY MARKET NOTICE
AEMO has completed a comprehensive review on voltage oscillation issue in south-west Victoria with consideration of wider asynchronous generators in the area. The voltage oscillation occurs in the south-west region when Heywood interconnector flow is higher than 500 MW from South Australia to Victoria.
The limit will manage the total MW output from Stockyard Hill, Dundonnell and Macarthur wind farms during period when flow on Heywood interconnector higher than 500 MW towards Victoria.
The new constraint equation includes asynchronous generators in south-west Victoria on the left-hand side. This limit is to replace the existing south-west Victoria voltage oscillation limit. Full details on the limits advice are to be published shortly on the AEMO website: https://aemo.com.au/energy-systems/electricity/national-electricity-market-nem/system-operations/congestion-information-resource/limits-advice
The following changes will be implemented at 1000 hrs on Friday 3rd November 2023
? Constraint equation will be removed from constraint set V-NIL:
V_SHWF_FLT_286
? Constraint equation will be implemented and added to constraint set V-NIL:
V_SH_DD_MAC_FLT_965
For full details on the formulation, the new constraint equation has now been loaded into AEMO's pre-production systems.
For further details on this change please contact terry.liu@aemo.com.au
Terry Liu
AEMO Operations
AEMO has completed a comprehensive review on voltage oscillation issue in south-west Victoria with consideration of wider asynchronous generators in the area. The voltage oscillation occurs in the south-west region when Heywood interconnector flow is higher than 500 MW from South Australia to Victoria.
The limit will manage the total MW output from Stockyard Hill, Dundonnell and Macarthur wind farms during period when flow on Heywood interconnector higher than 500 MW towards Victoria.
The new constraint equation includes asynchronous generators in south-west Victoria on the left-hand side. This limit is to replace the existing south-west Victoria voltage oscillation limit. Full details on the limits advice are to be published shortly on the AEMO website: https://aemo.com.au/energy-systems/electricity/national-electricity-market-nem/system-operations/congestion-information-resource/limits-advice
The following changes will be implemented at 1000 hrs on Friday 3rd November 2023
? Constraint equation will be removed from constraint set V-NIL:
V_SHWF_FLT_286
? Constraint equation will be implemented and added to constraint set V-NIL:
V_SH_DD_MAC_FLT_965
For full details on the formulation, the new constraint equation has now been loaded into AEMO's pre-production systems.
For further details on this change please contact terry.liu@aemo.com.au
Terry Liu
AEMO Operations
110677CONSTRAINTS02/11/2023 10:53:49 AM
Update to voltage stability and system strength constraints in North Queensland
AEMO ELECTRICITY MARKET NOTICE
Refer to market notice 102074
AEMO and Powerlink are continuing to investigate system strength requirements in North Queensland.
Due to commissioning of new feeder 8905 (H13 Ross - H39 Woree) 275kV line in Far North Queensland, the system normal equations for system strength and voltage stability have been revised.
A revision to the constraint equations will be implemented at 1400 hrs on Thursday 2nd November 2023.
The new system strength combinations have now published in a limits advice document on AEMO's website. For more information refer to the new limits advice: https://www.aemo.com.au/energy-systems/electricity/national-electricity-market-nem/system-operations/congestion-information-resource/limits-advice
This advice contains all the combinations for Queensland for system normal cases.
The constraint equations in the Q-NIL set below will be modified:
? Q_NIL_STRGTH_KBWF
? Q_NIL_STRGTH_KBWF
? Replace Q^NIL_FNQ_MEWF and Q^NIL_FNQ_WRSVC with new equation Q^NIL_FNQ_8905
AEMO Operations
Refer to market notice 102074
AEMO and Powerlink are continuing to investigate system strength requirements in North Queensland.
Due to commissioning of new feeder 8905 (H13 Ross - H39 Woree) 275kV line in Far North Queensland, the system normal equations for system strength and voltage stability have been revised.
A revision to the constraint equations will be implemented at 1400 hrs on Thursday 2nd November 2023.
The new system strength combinations have now published in a limits advice document on AEMO's website. For more information refer to the new limits advice: https://www.aemo.com.au/energy-systems/electricity/national-electricity-market-nem/system-operations/congestion-information-resource/limits-advice
This advice contains all the combinations for Queensland for system normal cases.
The constraint equations in the Q-NIL set below will be modified:
? Q_NIL_STRGTH_KBWF
? Q_NIL_STRGTH_KBWF
? Replace Q^NIL_FNQ_MEWF and Q^NIL_FNQ_WRSVC with new equation Q^NIL_FNQ_8905
AEMO Operations
110675INTER-REGIONAL TRANSFER02/11/2023 09:34:57 AM
Inter-regional transfer limit variation - Templers No2 132/33 kV Transformer- SA region - 02/11/2023
AEMO ELECTRICITY MARKET NOTICE
Inter-regional transfer limit variation - Templers No2 132 / 33 kV Transformer - SA region - 02/11/2023
At 0856 hrs 02/11/2023 there was an unplanned outage of Templers No2 132 / 33 kV Transformer.
Constraint set(s) invoked: S-X_TPRS_TPDR
This constraint set(s) contains equations with the following interconnectors on the LHS.
V-S-MNSP1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
Inter-regional transfer limit variation - Templers No2 132 / 33 kV Transformer - SA region - 02/11/2023
At 0856 hrs 02/11/2023 there was an unplanned outage of Templers No2 132 / 33 kV Transformer.
Constraint set(s) invoked: S-X_TPRS_TPDR
This constraint set(s) contains equations with the following interconnectors on the LHS.
V-S-MNSP1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
110595INTER-REGIONAL TRANSFER29/10/2023 08:31:12 PM
Inter-regional transfer limit variation - South East to Tailem Bend No 2 275kV Line - SA region - 29/10/2023
AEMO ELECTRICITY MARKET NOTICE
Inter-regional transfer limit variation - South East to Tailem Bend No 2 275kV Line - SA region - 29/10/2023
The outage has been completed and South East to Tailem Bend No 2 275kV Line returned to service at 2015 hrs 29/10/2023
Constraint set(s) revoked: S-TBSE
This constraint set(s) contains equations with the following interconnectors on the LHS.
NSW1-QLD1,V-SA,T-V-MNSP1,V-S-MNSP1,VIC1-NSW1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
Inter-regional transfer limit variation - South East to Tailem Bend No 2 275kV Line - SA region - 29/10/2023
The outage has been completed and South East to Tailem Bend No 2 275kV Line returned to service at 2015 hrs 29/10/2023
Constraint set(s) revoked: S-TBSE
This constraint set(s) contains equations with the following interconnectors on the LHS.
NSW1-QLD1,V-SA,T-V-MNSP1,V-S-MNSP1,VIC1-NSW1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
110564INTER-REGIONAL TRANSFER28/10/2023 06:50:22 AM
Cancellation Inter-Regional Transfer limit variation - Directlink control unavailable (NSW Region)
AEMO ELECTRICITY MARKET NOTICE
Cancellation Inter-Regional Transfer limit variation - Directlink control unavailable (NSW Region).
Refer AEMO Electricity Market Notice 110563
AEMO has been notified that the controls to vary Directlink output are now available.
Constraint set I-CTRL_ISSUE_TE revoked at 0650 hrs.
Manager NEM Real Time Operations
Cancellation Inter-Regional Transfer limit variation - Directlink control unavailable (NSW Region).
Refer AEMO Electricity Market Notice 110563
AEMO has been notified that the controls to vary Directlink output are now available.
Constraint set I-CTRL_ISSUE_TE revoked at 0650 hrs.
Manager NEM Real Time Operations
110563INTER-REGIONAL TRANSFER28/10/2023 06:43:52 AM
Inter-Regional Transfer limit variation - Directlink control unavailable (NSW Region)
AEMO ELECTRICITY MARKET NOTICE
Inter-Regional Transfer limit variation - Directlink control unavailable (NSW Region)
AEMO has been notified that the controls to vary Directlink output are unavailable until further notice.
Constraint set I-CTRL_ISSUE_TE invoked from 0640 hrs.
The constraint set contains equations with the following interconnector on the LHS:
N-Q-MNSP1
Manager NEM Real Time Operations
Inter-Regional Transfer limit variation - Directlink control unavailable (NSW Region)
AEMO has been notified that the controls to vary Directlink output are unavailable until further notice.
Constraint set I-CTRL_ISSUE_TE invoked from 0640 hrs.
The constraint set contains equations with the following interconnector on the LHS:
N-Q-MNSP1
Manager NEM Real Time Operations
110542INTER-REGIONAL TRANSFER27/10/2023 11:14:02 AM
Inter-regional transfer limit variation - Hazelwood - Loy Yang No1 500kV Line - VIC region - 27/10/2023
AEMO ELECTRICITY MARKET NOTICE
Inter-regional transfer limit variation - Hazelwood - Loy Yang No1 500kV Line - VIC region - 27/10/2023
The outage has been completed and Hazelwood - Loy Yang No1 500kV Line returned to service at 1110 hrs 27/10/2023
Constraint set(s) invoked: V-HWLY_1
This constraint set(s) contains equations with the following interconnectors on the LHS.
T-V-MNSP1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
Inter-regional transfer limit variation - Hazelwood - Loy Yang No1 500kV Line - VIC region - 27/10/2023
The outage has been completed and Hazelwood - Loy Yang No1 500kV Line returned to service at 1110 hrs 27/10/2023
Constraint set(s) invoked: V-HWLY_1
This constraint set(s) contains equations with the following interconnectors on the LHS.
T-V-MNSP1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations