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118672CONSTRAINTS08/10/2024 01:13:36 PM
Managing outages that create a credible risk of SA islanding
AEMO ELECTRICITY MARKET NOTICE
From 9th Oct 2024 AEMO will change constraints used during outages that create a credible risk of SA islanding.
From this date AEMO will:
1) Increase the maximum allowable flow on the V-SA interconnector from 50 MW to 250 MW in the VIC to SA direction, where the transmission outages is a planned outage.
2) Operate the SA region to the default 49-51 Hz target frequency containment band following a contingency event resulting in actual SA islanding. In order to meet this requirement, AEMO may now procure Contingency Raise FCAS locally from the SA region during these outages.
These changes reflect updated advice received by AEMO from the SA Jurisdictional System Security Coordinator.
The first network outage affected by this change is planned for 14th October 2024.
Andrew Groom
AEMO Operations
From 9th Oct 2024 AEMO will change constraints used during outages that create a credible risk of SA islanding.
From this date AEMO will:
1) Increase the maximum allowable flow on the V-SA interconnector from 50 MW to 250 MW in the VIC to SA direction, where the transmission outages is a planned outage.
2) Operate the SA region to the default 49-51 Hz target frequency containment band following a contingency event resulting in actual SA islanding. In order to meet this requirement, AEMO may now procure Contingency Raise FCAS locally from the SA region during these outages.
These changes reflect updated advice received by AEMO from the SA Jurisdictional System Security Coordinator.
The first network outage affected by this change is planned for 14th October 2024.
Andrew Groom
AEMO Operations
118323CONSTRAINTS19/09/2024 04:20:22 PM
Update to system normal constraint equation in NSW for transient voltage stability in south-west NSW
AEMO ELECTRICITY MARKET NOTICE
Refer to market notice 92840.
Transgrid has advised AEMO of an update to the transient voltage stability limit in south-west NSW for loss of Darlington Point to Wagga (63) 330 kV line. The limit will include terms for the Darlington Point and Riverina BESS.
The following constraint equation will be updated with the above changes at 1100 hrs Friday 20th September 2024.
N::N_NIL_63
For full details on the formulation, the new constraint equation has now been loaded into AEMO's pre-production systems.
For further details on these constraint equation please contact ben.blake@aemo.com.au
Ben Blake
AEMO Operations
Refer to market notice 92840.
Transgrid has advised AEMO of an update to the transient voltage stability limit in south-west NSW for loss of Darlington Point to Wagga (63) 330 kV line. The limit will include terms for the Darlington Point and Riverina BESS.
The following constraint equation will be updated with the above changes at 1100 hrs Friday 20th September 2024.
N::N_NIL_63
For full details on the formulation, the new constraint equation has now been loaded into AEMO's pre-production systems.
For further details on these constraint equation please contact ben.blake@aemo.com.au
Ben Blake
AEMO Operations
118170PRICE ADJUSTMENT06/09/2024 07:20:01 PM
Prices for intervals on 05/09/2024 from 13:55 to 15:10 are now confirmed
AEMO ELECTRICITY MARKET NOTICE
Refer AEMO Electricity Market Notice 118149 and 118150.
PRICES ARE NOW REVISED to Market Suspension Pricing Schedule for trading intervals on 05/09/2024 from 1355 hrs to 1510 hrs.
Manager Electricity Market Monitoring
Refer AEMO Electricity Market Notice 118149 and 118150.
PRICES ARE NOW REVISED to Market Suspension Pricing Schedule for trading intervals on 05/09/2024 from 1355 hrs to 1510 hrs.
Manager Electricity Market Monitoring
114889CONSTRAINTS20/02/2024 07:23:40 AM
Update to system strength constraints in North Queensland
AEMO ELECTRICITY MARKET NOTICE
Refer to market notice 110677
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 system strength equations for low North Queensland demands and all Karreya stations out of service conditions have been revised.
A revision to the constraint equations will be implemented at 1400 hrs on Tuesday 20th February 2024.
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.
Below constraint equations in the Q-NIL set will be modified:
- Q_NIL_STRGTH_KBWF
- Q_NIL_STRGTH_KBWF_I
- Q_NIL_STRGTH_HAUSF
- Q_NIL_STRGTH_HAUSF_I
- Q_NIL_STRGTH_MEWF
- Q_NIL_STRGTH_MEWF_I
AEMO Operations
Refer to market notice 110677
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 system strength equations for low North Queensland demands and all Karreya stations out of service conditions have been revised.
A revision to the constraint equations will be implemented at 1400 hrs on Tuesday 20th February 2024.
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.
Below constraint equations in the Q-NIL set will be modified:
- Q_NIL_STRGTH_KBWF
- Q_NIL_STRGTH_KBWF_I
- Q_NIL_STRGTH_HAUSF
- Q_NIL_STRGTH_HAUSF_I
- Q_NIL_STRGTH_MEWF
- Q_NIL_STRGTH_MEWF_I
AEMO Operations
114718PRICE ADJUSTMENT14/02/2024 02:52:11 PM
[EventId:202402131320_confirmed] Prices for interval 13-Feb-2024 13:20 are now confirmed
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 1452 hrs on 14 February 2024
PRICES ARE NOW CONFIRMED for trading interval 13-Feb-2024 13:20.
In accordance with Market Notice 114583 AEMO has reviewed this trading interval and determined that:
- Manifestly Incorrect Inputs did not apply
- Over-Constrained Dispatch has been resolved for dispatch interval
Changed Prices ($/MWh)
TYPE
Region Original Adjusted
Price Price
ENERGY
NSW1 -$38.41 -$35.04
QLD1 -$40.60 -$36.57
LOWERREG
TAS1 $16,600.00 $9.88
RAISEREG
TAS1 $16,600.00 $150.68
This is an AEMO autogenerated Market Notice.
Issued by Australian Energy Market Operator Ltd at 1452 hrs on 14 February 2024
PRICES ARE NOW CONFIRMED for trading interval 13-Feb-2024 13:20.
In accordance with Market Notice 114583 AEMO has reviewed this trading interval and determined that:
- Manifestly Incorrect Inputs did not apply
- Over-Constrained Dispatch has been resolved for dispatch interval
Changed Prices ($/MWh)
TYPE
Region Original Adjusted
Price Price
ENERGY
NSW1 -$38.41 -$35.04
QLD1 -$40.60 -$36.57
LOWERREG
TAS1 $16,600.00 $9.88
RAISEREG
TAS1 $16,600.00 $150.68
This is an AEMO autogenerated Market Notice.
114632RESERVE NOTICE13/02/2024 03:19:41 PM
Cancellation of Actual (LOR3) condition in the VIC region - 13/02/2024
AEMO ELECTRICITY MARKET NOTICE
Cancellation of Actual (LOR3) condition in the VIC region - 13/02/2024
The Actual LOR3 Condition in the VIC region advised in AEMO Electricity Market Notice No.114604 is cancelled at 1515 hrs 13/02/2024.
Manager NEM Real Time Operations
Cancellation of Actual (LOR3) condition in the VIC region - 13/02/2024
The Actual LOR3 Condition in the VIC region advised in AEMO Electricity Market Notice No.114604 is cancelled at 1515 hrs 13/02/2024.
Manager NEM Real Time Operations
114604RESERVE NOTICE13/02/2024 02:27:41 PM
Actual Lack Of Reserve Level 3 (LOR3) in the VIC region - 13/02/2024
AEMO ELECTRICITY MARKET NOTICE
Actual Lack Of Reserve Level 3 (LOR3) in the VIC region - 13/02/2024
Customer load shedding of non-interruptible load is occurring in the VIC region as a result of a shortfall of available capacity reserves.
An Actual LOR3 condition has been declared under clause 4.8.4(b) of the National Electricity Rules for the VIC region from 1420 hrs.
The Actual LOR3 condition is not forecast in Pre Dispatch.
The maximum load to be interrupted is up to 450 MW from 1420 hrs 13/02/2024
Manager NEM Real Time Operations
Actual Lack Of Reserve Level 3 (LOR3) in the VIC region - 13/02/2024
Customer load shedding of non-interruptible load is occurring in the VIC region as a result of a shortfall of available capacity reserves.
An Actual LOR3 condition has been declared under clause 4.8.4(b) of the National Electricity Rules for the VIC region from 1420 hrs.
The Actual LOR3 condition is not forecast in Pre Dispatch.
The maximum load to be interrupted is up to 450 MW from 1420 hrs 13/02/2024
Manager NEM Real Time Operations