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Direction - SA region 21/02/2024
Direction - SA region 21/02/2024
In accordance with section 116 of the National Electricity Law, AEMO has issued a direction to a participant in the SA region. For the purposes of the National Electricity Rules this is a direction under clause 4.8.9(a).
The direction was necessary to maintain the power system in a secure operating state.
AEMO may issue or revoke additional directions in order to meet the current requirement, unless sufficient market response is provided. A further market notice will be issued when all directions related to this requirement have been cancelled.
The issue of the direction commences an AEMO intervention event. AEMO declares all trading intervals during the event to be intervention trading intervals, commencing from the interval ending 1635 hrs on 21/02/2024.
Intervention pricing does not apply to this AEMO intervention event.
Manager NEM Real Time Operations
Update - Possible intervention to manage power system security in SA region
Update - Possible intervention to manage power system security in SA region
Refer AEMO Electricity Market Notice 114916
The synchronous generating units currently expected to be synchronised in SA from 0700 hrs 22/02/2024 will be inadequate to maintain a secure operating state in SA .
AEMO estimates that, in the absence of sufficient market response by 1630 hrs 21/02/2024, AEMO may need to intervene by issuing a direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised to maintain power system security in SA.
Manager NEM Real Time Operations
Possible intervention to manage power system security in SA Region
Possible intervention to manage power system security in SA Region
The synchronous generating units currently expected to be synchronised in SA from 0800 hrs 22/02/2024 will be inadequate to maintain a secure operating state in SA.
AEMO may need to intervene by issuing a direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised to maintain power system security in SA.
Manager NEM Real Time Operations
[EventId:202402211130_NRM_VIC1_SA1_stopped] NEGRES CONSTRAINT NRM_VIC1_SA1 ceased operating from 21 February 2024 11:30
Issued by Australian Energy Market Operator Ltd at 1130 hrs on 21 February 2024
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to SA - 21 February 2024.
Refer to market notice: 114914
AEMO has ceased taking action to minimize the further accumulation of negative settlement residues on the VIC to SA directional interconnector.
The negative residue constraint NRM_VIC1_SA1 ceased operating at 1130 hrs on 21 February 2024.
This is an AEMO autogenerated Market Notice.
[EventId:202402210955_NRM_VIC1_SA1_started] NEGRES CONSTRAINT NRM_VIC1_SA1 started operating from 21 February 2024 09:55
Issued by Australian Energy Market Operator Ltd at 0955 hrs on 21 February 2024
ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to SA - 21 February 2024.
Electricity Market outcomes have resulted in the accumulation of negative settlement residues that have exceeded the allowable negative residue threshold for the VIC to SA directional interconnector.
The negative residue constraint set NRM_VIC1_SA1 commenced operating from 0955 hrs on 21 February 2024.
This constraint set contains an equation with the following interconnectors on the LHS:
V-S-MNSP1
V-SA
The RHS of the constraint equation may be adjusted to manage residues.
This is an AEMO autogenerated Market Notice.
System Strength Requriements in NSW
Transgrid has provided an update to the system strength requirements for NSW and this has been published on the AEMO website today:
https://www.aemo.com.au/energy-systems/electricity/national-electricity-market-nem/system-operations/congestion-information-resource/limits-advice
Ben Blake
AEMO Operations
NEM Local Temperature Alerts for SA, VIC from 20 Feb 2024 to 24 Feb 2024
AEMO's weather service provider has issued forecast temperatures equal to or greater than the NEM Local Temperature Alert Levels for listed weather stations below.
SA
Port Augusta Ap (39+ Deg C): 20th Feb, 21st Feb, 22nd Feb
VIC
Mildura Ap (39+ Deg C): 22nd Feb
The NEM Local Temperature Alert Levels are:
Launceston Ti Tree Bend: 33 Deg C, Dalby Airport: 37 Deg C, for all other selected weather stations: 39 Deg C.
AEMO requests Market Participants to:
1. review the weather forecast in the local area where their generating units / MNSP converter stations are located and,
2. if required, update the available capacity in their dispatch offers or availability submissions consistent with the forecast temperatures.
Further information is available at:
https://aemo.com.au/energy-systems/electricity/national-electricity-market-nem/nem-forecasting-and-planning/forecasting-and-reliability/projected-assessment-of-system-adequacy/nem-local-temperature-alerts
AEMO Operations Planning
[EventId:202402191515_NRM_NSW1_VIC1_stopped] NEGRES CONSTRAINT NRM_NSW1_VIC1 ceased operating from 19 February 2024 15:15
Issued by Australian Energy Market Operator Ltd at 1515 hrs on 19 February 2024
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 19 February 2024.
Refer to market notice: 114879
AEMO has ceased taking action to minimize the further accumulation of negative settlement residues on the NSW to VIC directional interconnector.
The negative residue constraint NRM_NSW1_VIC1 ceased operating at 1515 hrs on 19 February 2024.
This is an AEMO autogenerated Market Notice.
[EventId:202402191405_NRM_NSW1_VIC1_started] NEGRES CONSTRAINT NRM_NSW1_VIC1 started operating from 19 February 2024 14:05
Issued by Australian Energy Market Operator Ltd at 1405 hrs on 19 February 2024
ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 19 February 2024.
Electricity Market outcomes have resulted in the accumulation of negative settlement residues that have exceeded the allowable negative residue threshold for the NSW to VIC directional interconnector.
The negative residue constraint set NRM_NSW1_VIC1 commenced operating from 1405 hrs on 19 February 2024.
This constraint set contains an equation with the following interconnectors on the LHS:
VIC1-NSW1
The RHS of the constraint equation may be adjusted to manage residues.
This is an AEMO autogenerated Market Notice.