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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
113958RESERVE NOTICE29/01/2024 09:17:19 AM
STPASA - Suspect Lack Of Reserve Level 3 (LOR3) in the QLD Region on 01/02/2024
AEMO ELECTRICITY MARKET NOTICE
AEMO considers that there are suspect Forecast LOR3 conditions for the QLD region for the following periods:
1. From 0900 hrs to 1000 hrs 01/02/2024.
The maximum load (other than interruptible loads) forecast to be interrupted is 38 MW at 0930 hrs.
2. From 1130 hrs to 1200 hrs 01/02/2024.
The maximum load (other than interruptible loads) forecast to be interrupted is 62 MW at 1130 hrs.
AEMO is currently investigating these LOR3 forecast conditions to confirm whether they are valid.
AEMO Operations
AEMO considers that there are suspect Forecast LOR3 conditions for the QLD region for the following periods:
1. From 0900 hrs to 1000 hrs 01/02/2024.
The maximum load (other than interruptible loads) forecast to be interrupted is 38 MW at 0930 hrs.
2. From 1130 hrs to 1200 hrs 01/02/2024.
The maximum load (other than interruptible loads) forecast to be interrupted is 62 MW at 1130 hrs.
AEMO is currently investigating these LOR3 forecast conditions to confirm whether they are valid.
AEMO 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
108751RESERVE NOTICE26/06/2023 10:49:35 AM
STPASA - Cancellation of the Forecast Lack Of Reserve Level 3 (LOR3) in the SA Region on 27/06/2023
AEMO ELECTRICITY MARKET NOTICE
The Forecast LOR3 condition in the SA region advised in AEMO Electricity Market Notice No. 108747 is cancelled at 1000 hrs 26/06/2023.
AEMO Operations
The Forecast LOR3 condition in the SA region advised in AEMO Electricity Market Notice No. 108747 is cancelled at 1000 hrs 26/06/2023.
AEMO Operations
108747RESERVE NOTICE26/06/2023 05:41:37 AM
STPASA - Update of the Forecast Lack Of Reserve Level 3 (LOR3) in the SA Region on 27/06/2023
AEMO ELECTRICITY MARKET NOTICE
The Forecast LOR3 condition in the SA region advised in AEMO Electricity Market Notice No. 108740 has been updated at 0530 hrs to the following:
From 1800 hrs 27/06/2023 to 1930 hrs 27/06/2023.
The maximum load (other than interruptible loads) forecast to be interrupted is 43 MW at 1830 hrs.
.
AEMO is seeking a market response.
AEMO estimates the latest time it would need to intervene through an AEMO intervention event is 0600 hrs on 27/06/2023.
Manager NEM Real Time Operations
The Forecast LOR3 condition in the SA region advised in AEMO Electricity Market Notice No. 108740 has been updated at 0530 hrs to the following:
From 1800 hrs 27/06/2023 to 1930 hrs 27/06/2023.
The maximum load (other than interruptible loads) forecast to be interrupted is 43 MW at 1830 hrs.
.
AEMO is seeking a market response.
AEMO estimates the latest time it would need to intervene through an AEMO intervention event is 0600 hrs on 27/06/2023.
Manager NEM Real Time Operations
108740RESERVE NOTICE25/06/2023 10:44:08 PM
STPASA - Forecast Lack Of Reserve Level 3 (LOR3) in the SA Region on 27/06/2023
AEMO ELECTRICITY MARKET NOTICE
AEMO declares a Forecast LOR3 condition under clause 4.8.4(b) of the National Electricity Rules for the SA region for the following period:
From 1800 hrs 27/06/2023 to 1900 hrs 27/06/2023.
The maximum load (other than interruptible loads) forecast to be interrupted is 5 MW at 1830 hrs.
AEMO is seeking a market response.
AEMO estimates the latest time it would need to intervene through an AEMO intervention event is 0600 hrs on 27/06/2023.
Manager NEM Real Time Operations
AEMO declares a Forecast LOR3 condition under clause 4.8.4(b) of the National Electricity Rules for the SA region for the following period:
From 1800 hrs 27/06/2023 to 1900 hrs 27/06/2023.
The maximum load (other than interruptible loads) forecast to be interrupted is 5 MW at 1830 hrs.
AEMO is seeking a market response.
AEMO estimates the latest time it would need to intervene through an AEMO intervention event is 0600 hrs on 27/06/2023.
Manager NEM Real Time Operations
108729RESERVE NOTICE25/06/2023 08:28:49 AM
STPASA - Cancellation of the Forecast Lack Of Reserve Level 3 (LOR3) in the SA Region on 27/06/2023
AEMO ELECTRICITY MARKET NOTICE
The Forecast LOR3 condition in the SA region advised in AEMO Electricity Market Notice No. 108727 is cancelled at 0800 hrs 25/06/2023.
Manager NEM Real Time Operations
The Forecast LOR3 condition in the SA region advised in AEMO Electricity Market Notice No. 108727 is cancelled at 0800 hrs 25/06/2023.
Manager NEM Real Time Operations
108727RESERVE NOTICE24/06/2023 10:47:54 PM
STPASA - Forecast Lack Of Reserve Level 3 (LOR3) in the SA Region on 27/06/2023
AEMO ELECTRICITY MARKET NOTICE
AEMO declares a Forecast LOR3 condition under clause 4.8.4(b) of the National Electricity Rules for the SA region for the following period:
[1.] From 1800 hrs 27/06/2023 to 2000 hrs 27/06/2023.
The maximum load (other than interruptible loads) forecast to be interrupted is 108 MW at 1830 hrs.
AEMO is seeking a market response.
AEMO estimates the latest time it would need to intervene through an AEMO intervention event is 0600 hrs on 27/06/2023.
Manager NEM Real Time Operations
AEMO declares a Forecast LOR3 condition under clause 4.8.4(b) of the National Electricity Rules for the SA region for the following period:
[1.] From 1800 hrs 27/06/2023 to 2000 hrs 27/06/2023.
The maximum load (other than interruptible loads) forecast to be interrupted is 108 MW at 1830 hrs.
AEMO is seeking a market response.
AEMO estimates the latest time it would need to intervene through an AEMO intervention event is 0600 hrs on 27/06/2023.
Manager NEM Real Time Operations