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Possible intervention to manage power system security in VIC region
Possible intervention to manage power system security in VIC region
The synchronous generating units currently expected to be synchronised in VIC from 0740 hrs 14/02/2024 will be inadequate to maintain a secure operating state in VIC .
AEMO estimates that, in the absence of sufficient market response by 0715 hrs 14/02/2024, AEMO may need to intervene by issuing a direction requiring one or more VIC synchronous generating unit(s) to operate or remain synchronised to maintain power system security in VIC.
Manager NEM Real Time Operations
Cancellation - AEMO Intervention Event - Intervention trading intervals - Direction VIC region 13/02/2024
Cancellation - AEMO Intervention Event - Intervention trading intervals - Direction VIC region 13/02/2024
Refer Market Notice 114656
The AEMO Intervention Event and all associated directions are cancelled from 0610 hrs 14/02/2024
Manager NEM Real Time Operations
Inter-regional transfer limit variation: Hazelwood - South Morang No 1 500 kV Line (VIC) - Voltage Control
The Hazelwood - South Morang No 1 500 kV Line has been de-energised to manage voltages in the Victoria region.
The following constraint set was invoked at 0235 hrs 14/02/2024
V-HWSM
The constraint set contains equations with the following interconnectors on the LHS.
T-V-MNSP1
V-S-MNSP1
V-SA
VIC1-NSW1
Refer to AEMO Network Outage Scheduler (NOS) for return to service details
Manager NEM Real Time Operations
Inter-regional transfer limit variation: South Morang - Sydenham No 1 and 2 500 kV lines (VIC) - Voltage Control
The South Morang - Sydenham No 1 and 2 500 kV lines have been de-energised to manage voltages in the Victoria region.
The following constraint set was invoked at 0105 hrs 14/02/2024
V-SMSY
The constraint set contains equations with the following interconnectors on the LHS.
T-V-MNSP1
V-S-MNSP1
V-SA
VIC1-NSW1
Refer to AEMO Network Outage Scheduler (NOS) for further details
Manager NEM Real Time Operations
Inter-regional transfer limit variation: Moorabool - Sydenham No1 and No2 500 kV lines - VIC region - 13/02/2024 -
Inter-regional transfer limit variation: Moorabool - Sydenham No1 and No2 500 kV lines - 13/02/2024
At 1308 hrs 13/02/2024 the Moorabool - Sydenham No1 and No2 500 kV lines tripped.
Refer Market notices 114577 and 114625.
The following constraint set(s) are invoked :
V-X_MLSY
F-V-X_ML_BUSTIE_500
I-VS_050
These constraint set contains equations with the following interconnectors on the LHS.
T-V-MNSP1
V-SA
V-S-MNSP1
VIC1- NSW1
Refer to the Network outage scheduler (NOS) for more details:
Manager NEM Real Time Operations
Update: Significant power system event - Victoria Region - Hazelwood transformers -13/02/2024
At 1827 hrs 13/02/2024 At Hazelwood terminal station in the Victoria region, the following plant was returned to service.
The No1 500 kV / 220 kV transformer
The No2 500 kV / 220 kV transformer
The No3 500 kV / 220 kV transformer
The No4 500 kV / 220 kV transformer
The Jeeralang - Hazelwood No 2 220kV line remains out of service.
Refer to Network outage scheduler (NOS) for further details.
Refer Market notice 114641 and 114643
This Market Notice is issued in accordance with NER clause 4.8.3.
Manager NEM Real Time Operations
[EventId:202402132100_NRM_VIC1_NSW1_stopped] NEGRES CONSTRAINT NRM_VIC1_NSW1 ceased operating from 13 February 2024 21:00
Issued by Australian Energy Market Operator Ltd at 2100 hrs on 13 February 2024
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to NSW - 13 February 2024.
Refer to market notice: 114679
AEMO has ceased taking action to minimize the further accumulation of negative settlement residues on the VIC to NSW directional interconnector.
The negative residue constraint NRM_VIC1_NSW1 ceased operating at 2100 hrs on 13 February 2024.
This is an AEMO autogenerated Market Notice.
[EventId:202402132005_NRM_VIC1_NSW1_started] NEGRES CONSTRAINT NRM_VIC1_NSW1 started operating from 13 February 2024 20:05
Issued by Australian Energy Market Operator Ltd at 2005 hrs on 13 February 2024
ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to NSW - 13 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 NSW directional interconnector.
The negative residue constraint set NRM_VIC1_NSW1 commenced operating from 2005 hrs on 13 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.
[EventId:202402131900_NRM_VIC1_SA1_stopped] NEGRES CONSTRAINT NRM_VIC1_SA1 ceased operating from 13 February 2024 19:00
Issued by Australian Energy Market Operator Ltd at 1900 hrs on 13 February 2024
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to SA - 13 February 2024.
Refer to market notice: 114659
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 1900 hrs on 13 February 2024.
This is an AEMO autogenerated Market Notice.