Market Notices

112110MARKET INTERVENTION08/12/2023 03:32:37 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 112084

The synchronous generating units currently expected to be synchronised in SA from 0700 hrs 09/12/2023 will be inadequate to maintain a secure operating state in SA .

AEMO estimates that, in the absence of sufficient market response by 1630 hrs 08/12/2023, 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
112094SETTLEMENTS RESIDUE08/12/2023 02:51:32 PM

[EventId:202312081450_NRM_NSW1_VIC1_started] NEGRES CONSTRAINT NRM_NSW1_VIC1 started operating from 08 December 2023 14:50

AEMO ELECTRICITY MARKET NOTICE

Issued by Australian Energy Market Operator Ltd at 1450 hrs on 8 December 2023

ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 8 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 1450 hrs on 8 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.
112084MARKET INTERVENTION08/12/2023 01:06:27 PM

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 0930 hrs 09/12/2023 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
112075SETTLEMENTS RESIDUE08/12/2023 11:20:28 AM

[EventId:202312081120_NRM_NSW1_VIC1_stopped] NEGRES CONSTRAINT NRM_NSW1_VIC1 ceased operating from 08 December 2023 11:20

AEMO ELECTRICITY MARKET NOTICE

Issued by Australian Energy Market Operator Ltd at 1120 hrs on 8 December 2023

CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 8 December 2023.

Refer to market notice: 112063

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 1120 hrs on 8 December 2023.

This is an AEMO autogenerated Market Notice.
112063SETTLEMENTS RESIDUE08/12/2023 10:16:32 AM

[EventId:202312081015_NRM_NSW1_VIC1_started] NEGRES CONSTRAINT NRM_NSW1_VIC1 started operating from 08 December 2023 10:15

AEMO ELECTRICITY MARKET NOTICE

Issued by Australian Energy Market Operator Ltd at 1015 hrs on 8 December 2023

ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 8 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 1015 hrs on 8 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.
112050INTER-REGIONAL TRANSFER08/12/2023 01:18:51 AM

Cancellation Inter-Regional Transfer limit variation - Murraylink control unavailable (SA Region)

AEMO ELECTRICITY MARKET NOTICE

Cancellation Inter-Regional Transfer limit variation - Murraylink control unavailable (SA Region)

Refer AEMO Electricity Market Notice 112048

AEMO has been notified that the controls to vary Murraylink output are now available.

Constraint set I-CTRL_ISSUE_ML revoked at 0115 hrs.

Manager NEM Real Time Operations
112049INTER-REGIONAL TRANSFER08/12/2023 01:17:46 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 112047

AEMO has been notified that the controls to vary Directlink output are now available.

Constraint set I-CTRL_ISSUE_TE revoked at 0115 hrs.

Manager NEM Real Time Operations
112048INTER-REGIONAL TRANSFER08/12/2023 12:22:34 AM

Inter-Regional Transfer limit variation - Murraylink control unavailable (SA Region)

AEMO ELECTRICITY MARKET NOTICE

Inter-Regional Transfer limit variation - Murraylink control unavailable (SA Region)

AEMO has been notified that the controls to vary Murraylink output are unavailable until further notice.

Constraint set I-CTRL_ISSUE_ML invoked from 0025 hrs.

The constraint set contains equations with the following interconnector on the LHS:

V-S-MNSP1


Manager NEM Real Time Operations
112047INTER-REGIONAL TRANSFER08/12/2023 12:23:43 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 0025 hrs.

The constraint set contains equations with the following interconnector on the LHS:

N-Q-MNSP1


Manager NEM Real Time Operations
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