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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 112415
The synchronous generating units currently expected to be synchronised in SA from 0700 hrs 17/12/2023 will be inadequate to maintain a secure operating state in SA .
AEMO estimates that, in the absence of sufficient market response by 1500 hrs 16/12/2023, 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
[EventId:202312161315_NRM_NSW1_VIC1_started] NEGRES CONSTRAINT NRM_NSW1_VIC1 started operating from 16 December 2023 13:15
Issued by Australian Energy Market Operator Ltd at 1315 hrs on 16 December 2023
ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 16 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 1315 hrs on 16 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.
Cancellation - AEMO Intervention Event - Intervention trading intervals - Direction SA region 15/12/2023
Cancellation - AEMO Intervention Event - Intervention trading intervals - Direction SA region 15/12/2023
Refer Market Notice 112383
The AEMO Intervention Event and all associated directions are cancelled from 1630 hrs 16/12/2023
Manager NEM Real Time Operations
Possible intervention to manage power system security in South Australia (SA) Region
Possible intervention to manage power system security in South Australia (SA) Region
The synchronous generating units currently expected to be synchronised in SA from 0630 hrs 17/12/2023 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
[EventId:202312161230_NRM_NSW1_VIC1_stopped] NEGRES CONSTRAINT NRM_NSW1_VIC1 ceased operating from 16 December 2023 12:30
Issued by Australian Energy Market Operator Ltd at 1230 hrs on 16 December 2023
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 16 December 2023.
Refer to market notice: 112399
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 1230 hrs on 16 December 2023.
This is an AEMO autogenerated Market Notice.
[EventId:202312161035_NRM_NSW1_VIC1_started] NEGRES CONSTRAINT NRM_NSW1_VIC1 started operating from 16 December 2023 10:35
Issued by Australian Energy Market Operator Ltd at 1035 hrs on 16 December 2023
ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 16 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 1035 hrs on 16 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.
[EventId:202312161030_NRM_NSW1_VIC1_stopped] NEGRES CONSTRAINT NRM_NSW1_VIC1 ceased operating from 16 December 2023 10:30
Issued by Australian Energy Market Operator Ltd at 1030 hrs on 16 December 2023
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 16 December 2023.
Refer to market notice: 112397
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 1030 hrs on 16 December 2023.
This is an AEMO autogenerated Market Notice.
[EventId:202312160935_NRM_NSW1_VIC1_started] NEGRES CONSTRAINT NRM_NSW1_VIC1 started operating from 16 December 2023 09:35
Issued by Australian Energy Market Operator Ltd at 0935 hrs on 16 December 2023
ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 16 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 16 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.
QNI Minor testing (NSW to Qld) 16th December 2023
Refer to market notice 110640
There is an opportunity for testing QNI Minor for flows from NSW to Qld up to 750 MW on Tuesday 16th December from 0930 to 1800hrs.
This test includes a trip and reclose of a line in northern NSW.
Please also refer to the published formal QNI minor testing information at the following link:
https://www.aemo.com.au/consultations/current-and-closed-consultations/qld-to-nsw-interconnector-qni-upgrade
Ben Blake
AEMO Operations