122444POWER SYSTEM EVENTS23/12/2024 08:40:02 PM

Update - Non-credible contingency event - SA region - 23/12/2024

AEMO ELECTRICITY MARKET NOTICE.

Update - Non-credible contingency event - SA region - 23/12/2024

Refer AEMO Electricity Market Notice 122442

At 2036 hrs the Happy Valley - Morphett Vale East and the Morphett Vale - Cherry Gardens 275kV lines were returned to service.

The cause of this non-credible contingency event has been identified and AEMO is satisfied that another occurrence of this event is unlikely under the current circumstances.

AEMO will not reclassify this event as a credible contingency event.

Manager NEM Real Time Operations
     
122443SETTLEMENTS RESIDUE23/12/2024 05:00:33 PM

[EventId:202412231700_NRM_NSW1_VIC1_stopped] NEGRES CONSTRAINT NRM_NSW1_VIC1 ceased operating from 23 December 2024 17:00

AEMO ELECTRICITY MARKET NOTICE

Issued by Australian Energy Market Operator Ltd at 1700 hrs on 23 December 2024

CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 23 December 2024.

Refer to market notice: 122438

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 1700 hrs on 23 December 2024.

This is an AEMO autogenerated Market Notice.
     
122442POWER SYSTEM EVENTS23/12/2024 04:44:55 PM

Non-credible contingency event - SA region - 23/12/2024

AEMO ELECTRICITY MARKET NOTICE.

Non-credible contingency event - SA region - 23/12/2024

At 1632 hrs the Happy Valley - Morphett Vale East 275kV Line and the Morphett Vale - Cherry Gardens 275kV line 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
     
122438SETTLEMENTS RESIDUE23/12/2024 03:45:34 PM

[EventId:202412231545_NRM_NSW1_VIC1_started] NEGRES CONSTRAINT NRM_NSW1_VIC1 started operating from 23 December 2024 15:45

AEMO ELECTRICITY MARKET NOTICE

Issued by Australian Energy Market Operator Ltd at 1545 hrs on 23 December 2024

ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 23 December 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 1545 hrs on 23 December 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.
     
122417SETTLEMENTS RESIDUE22/12/2024 06:00:29 PM

[EventId:202412221800_NRM_NSW1_VIC1_stopped] NEGRES CONSTRAINT NRM_NSW1_VIC1 ceased operating from 22 December 2024 18:00

AEMO ELECTRICITY MARKET NOTICE

Issued by Australian Energy Market Operator Ltd at 1800 hrs on 22 December 2024

CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 22 December 2024.

Refer to market notice: 122412

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 1800 hrs on 22 December 2024.

This is an AEMO autogenerated Market Notice.
     
122412SETTLEMENTS RESIDUE22/12/2024 04:05:24 PM

[EventId:202412221605_NRM_NSW1_VIC1_started] NEGRES CONSTRAINT NRM_NSW1_VIC1 started operating from 22 December 2024 16:05

AEMO ELECTRICITY MARKET NOTICE

Issued by Australian Energy Market Operator Ltd at 1605 hrs on 22 December 2024

ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 22 December 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 1605 hrs on 22 December 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.
     
122396SETTLEMENTS RESIDUE22/12/2024 10:20:34 AM

[EventId:202412221020_NRM_NSW1_VIC1_stopped] NEGRES CONSTRAINT NRM_NSW1_VIC1 ceased operating from 22 December 2024 10:20

AEMO ELECTRICITY MARKET NOTICE

Issued by Australian Energy Market Operator Ltd at 1020 hrs on 22 December 2024

CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 22 December 2024.

Refer to market notice: 122392

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 1020 hrs on 22 December 2024.

This is an AEMO autogenerated Market Notice.
     
122392SETTLEMENTS RESIDUE22/12/2024 07:40:25 AM

[EventId:202412220740_NRM_NSW1_VIC1_started] NEGRES CONSTRAINT NRM_NSW1_VIC1 started operating from 22 December 2024 07:40

AEMO ELECTRICITY MARKET NOTICE

Issued by Australian Energy Market Operator Ltd at 0740 hrs on 22 December 2024

ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 22 December 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 0740 hrs on 22 December 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.
     
122380SETTLEMENTS RESIDUE21/12/2024 05:00:30 PM

[EventId:202412211700_NRM_NSW1_VIC1_stopped] NEGRES CONSTRAINT NRM_NSW1_VIC1 ceased operating from 21 December 2024 17:00

AEMO ELECTRICITY MARKET NOTICE

Issued by Australian Energy Market Operator Ltd at 1700 hrs on 21 December 2024

CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 21 December 2024.

Refer to market notice: 122375

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 1700 hrs on 21 December 2024.

This is an AEMO autogenerated Market Notice.
     
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