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Update - Lightning vulnerable lines in TAS region
Update - Lightning vulnerable lines in TAS region
Refer to AEMO Electricity Market Notice 114647 and 114734
At 1602 hrs 13/02/2024 the Norwood - Scottsdale 110kV line and the Norwood - Scottsdale - Derby 110kV line tripped.
The cause of the trip was identified as due to Lightning.
In accordance with SO_OP_3715, AEMO now considers the Norwood - Scottsdale 110kV line and the Norwood - Scottsdale - Derby 110kV line to be vulnerable with a category of Vulnerability due to Lightning.
Manager NEM Real Time Operations
NEM Local Temperature Alerts for SA, VIC from 14 Feb 2024 to 18 Feb 2024
AEMO's weather service provider has issued forecast temperatures equal to or greater than the NEM Local Temperature Alert Levels for listed weather stations below.
SA
Port Augusta Ap (39+ Deg C): 17th Feb, 18th Feb
VIC
Mildura Ap (39+ Deg C): 18th Feb
The NEM Local Temperature Alert Levels are:
Launceston Ti Tree Bend: 33 Deg C, Dalby Airport: 37 Deg C, for all other selected weather stations: 39 Deg C.
AEMO requests Market Participants to:
1. review the weather forecast in the local area where their generating units / MNSP converter stations are located and,
2. if required, update the available capacity in their dispatch offers or availability submissions consistent with the forecast temperatures.
Further information is available at:
https://aemo.com.au/energy-systems/electricity/national-electricity-market-nem/nem-forecasting-and-planning/forecasting-and-reliability/projected-assessment-of-system-adequacy/nem-local-temperature-alerts
AEMO Operations Planning
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
Cancellation of Actual (LOR3) condition in the VIC region - 13/02/2024
Cancellation of Actual (LOR3) condition in the VIC region - 13/02/2024
The Actual LOR3 Condition in the VIC region advised in AEMO Electricity Market Notice No.114604 is cancelled at 1515 hrs 13/02/2024.
Manager NEM Real Time Operations
Load Restoration Direction Cancellation in the Vic Region
Cancellation - Load Restoration Direction in the Vic Region - 13/02/2024
Refer to AEMO Electricity Market Notice ID 114607
Load restoration as directed is complete. Direction cancelled from 1510 hrs 13/02/2024.
Manager NEM Real Time Operations
Load Restoration Direction in the Vic Region
Load Restoration Direction in the Vic Region
AEMO has directed load restoration commencing at 1450 hrs 13/02/2024 in the Victoria region
The direction was issued under section 116 of the NEL, and was a clause 4.8.9 instruction under the NER.
Manager NEM Real Time Operations
Actual Lack Of Reserve Level 3 (LOR3) in the VIC region - 13/02/2024
Actual Lack Of Reserve Level 3 (LOR3) in the VIC region - 13/02/2024
Customer load shedding of non-interruptible load is occurring in the VIC region as a result of a shortfall of available capacity reserves.
An Actual LOR3 condition has been declared under clause 4.8.4(b) of the National Electricity Rules for the VIC region from 1420 hrs.
The Actual LOR3 condition is not forecast in Pre Dispatch.
The maximum load to be interrupted is up to 450 MW from 1420 hrs 13/02/2024
Manager NEM Real Time Operations