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112316MARKET INTERVENTION14/12/2023 12:51:59 PM
Possible intervention to manage power system security in South Australia (SA) Region
AEMO ELECTRICITY MARKET NOTICE
Possible intervention to manage power system security in South Australia (SA) Region
The synchronous generating units currently expected to be synchronised in SA from 0730 hrs 15/12/2023 will be inadequate to maintain sufficient system strength in SA and hence a secure operating state.
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 South Australia (SA) Region
The synchronous generating units currently expected to be synchronised in SA from 0730 hrs 15/12/2023 will be inadequate to maintain sufficient system strength in SA and hence a secure operating state.
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
112315SETTLEMENTS RESIDUE14/12/2023 11:37:30 AM
[EventId:202312141130_NRM_NSW1_VIC1_started] NEGRES CONSTRAINT NRM_NSW1_VIC1 started operating from 14 December 2023 11:30
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 1130 hrs on 14 December 2023
ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 14 December 2023.
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 1130 hrs on 14 December 2023.
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.
Issued by Australian Energy Market Operator Ltd at 1130 hrs on 14 December 2023
ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 14 December 2023.
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 1130 hrs on 14 December 2023.
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.
112303SETTLEMENTS RESIDUE14/12/2023 11:01:24 AM
[EventId:202312141100_NRM_NSW1_VIC1_stopped] NEGRES CONSTRAINT NRM_NSW1_VIC1 ceased operating from 14 December 2023 11:00
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 1100 hrs on 14 December 2023
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 14 December 2023.
Refer to market notice: 112296
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 1100 hrs on 14 December 2023.
This is an AEMO autogenerated Market Notice.
Issued by Australian Energy Market Operator Ltd at 1100 hrs on 14 December 2023
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 14 December 2023.
Refer to market notice: 112296
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 1100 hrs on 14 December 2023.
This is an AEMO autogenerated Market Notice.
112296SETTLEMENTS RESIDUE14/12/2023 09:35:23 AM
[EventId:202312140935_NRM_NSW1_VIC1_started] NEGRES CONSTRAINT NRM_NSW1_VIC1 started operating from 14 December 2023 09:35
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 0935 hrs on 14 December 2023
ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 14 December 2023.
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 0935 hrs on 14 December 2023.
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.
Issued by Australian Energy Market Operator Ltd at 0935 hrs on 14 December 2023
ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 14 December 2023.
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 0935 hrs on 14 December 2023.
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.
112261MARKET INTERVENTION13/12/2023 05:03:43 PM
Direction - SA region 13/12/2023
AEMO ELECTRICITY MARKET NOTICE.
Direction - SA region 13/12/2023
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 1705 hrs on 13/12/2023.
Intervention pricing does not apply to this AEMO intervention event.
Manager NEM Real Time Operations
Direction - SA region 13/12/2023
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 1705 hrs on 13/12/2023.
Intervention pricing does not apply to this AEMO intervention event.
Manager NEM Real Time Operations
112253MARKET INTERVENTION13/12/2023 03:16:08 PM
Update - Possible intervention to manage power system security in SA region
AEMO ELECTRICITY MARKET NOTICE
Update - Possible intervention to manage power system security in SA region
Refer AEMO Electricity Market Notice 112218
The synchronous generating units currently expected to be synchronised in SA from 0000 hrs 14/12/2023 will be inadequate to maintain a secure operating state in SA .
AEMO estimates that, in the absence of sufficient market response by 1700 hrs 13/12/2023, 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
Update - Possible intervention to manage power system security in SA region
Refer AEMO Electricity Market Notice 112218
The synchronous generating units currently expected to be synchronised in SA from 0000 hrs 14/12/2023 will be inadequate to maintain a secure operating state in SA .
AEMO estimates that, in the absence of sufficient market response by 1700 hrs 13/12/2023, 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
112247POWER SYSTEM EVENTS13/12/2023 01:43:17 PM
Non-credible contingency event - TAS region - 13/12/2023
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - TAS region - 13/12/2023
At 1324 hrs the Hadspen - Palmerston No.3 & No.4 110 kV lines tripped.
AEMO did not instruct load shedding.
AEMO has not been advised of any disconnection of bulk electrical load.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
Non-credible contingency event - TAS region - 13/12/2023
At 1324 hrs the Hadspen - Palmerston No.3 & No.4 110 kV lines tripped.
AEMO did not instruct load shedding.
AEMO has not been advised of any disconnection of bulk electrical load.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
112236MARKET INTERVENTION13/12/2023 12:06:07 PM
Cancellation - AEMO Intervention Event - Intervention trading intervals - Direction SA region 12/12/2023
AEMO ELECTRICITY MARKET NOTICE
Cancellation - AEMO Intervention Event - Intervention trading intervals - Direction SA region 12/12/2023
Refer Market Notice 112212
The AEMO Intervention Event and all associated directions are cancelled from 1200 hrs 13/12/2023
Manager NEM Real Time Operations
Cancellation - AEMO Intervention Event - Intervention trading intervals - Direction SA region 12/12/2023
Refer Market Notice 112212
The AEMO Intervention Event and all associated directions are cancelled from 1200 hrs 13/12/2023
Manager NEM Real Time Operations
112218MARKET INTERVENTION13/12/2023 06:48:53 AM
Possible intervention to manage power system security in SA Region
AEMO ELECTRICITY MARKET NOTICE
Possible intervention to manage power system security in SA Region
The synchronous generating units currently expected to be synchronised in SA from 0130 hrs 14/12/2023 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
Possible intervention to manage power system security in SA Region
The synchronous generating units currently expected to be synchronised in SA from 0130 hrs 14/12/2023 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