Market Notices

114770INTER-REGIONAL TRANSFER15/02/2024 07:34:10 PM

Inter-regional transfer limit variation - Moorabool Sydenham 500 kV lines - Vic region - 15/02/2024

AEMO ELECTRICITY MARKET NOTICE

At 1905 hrs 15/02/2024 in the Victoria region interim work was completed at Moorabool and Sydenham terminal stations to provide additional 500 kV bus ties.

As a result of this completed work the South Australia region is no longer on a credible risk of separation.

Constraint set changes.

Invoked:
V-X_MLSY_MLTS_TIE

Revoked:

F-V-X_ML_BUSTIE_500
I-VS_050
S-X_BC_CP
V-X_MLSY

This constraint set(s) contains equations with the following interconnectors on the LHS.
T-V-MNSP1
V-SA
V-S-MNSP1
VIC1- NSW1
Rfer Market Notices 114577, 114768, 114686

Refer to the AEMO Network Outage Scheduler for further information.

Manager NEM Real Time Operations
114759POWER SYSTEM EVENTS15/02/2024 02:06:23 PM

Update: Significant power system event - Victoria Region - Hazelwood transformers and Hazelwood PS - Jeeralang No 2 220kV -13/02/2024

AEMO ELECTRICITY MARKET NOTICE.

Update - Significant power system event - 13/02/2024

Refer AEMO Electricity Market Notices 114685

At 1247 hrs 15/02/2024 the Hazelwood PS - Jeeralang No 2 220kV line was returned to service in the Victoria region

All of the equipment has now been returned to service.

The cause of this significant power system 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
114688INTER-REGIONAL TRANSFER14/02/2024 03:05:05 AM

Inter-regional transfer limit variation: Hazelwood - South Morang No 1 500 kV Line (VIC) - Voltage Control

AEMO ELECTRICITY MARKET NOTICE

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
114687INTER-REGIONAL TRANSFER14/02/2024 01:30:25 AM

Inter-regional transfer limit variation: South Morang - Sydenham No 1 and 2 500 kV lines (VIC) - Voltage Control

AEMO ELECTRICITY MARKET NOTICE

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
114686INTER-REGIONAL TRANSFER14/02/2024 01:24:53 AM

Inter-regional transfer limit variation: Moorabool - Sydenham No1 and No2 500 kV lines - VIC region - 13/02/2024 -

AEMO ELECTRICITY MARKET NOTICE

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
114685POWER SYSTEM EVENTS13/02/2024 10:37:34 PM

Update: Significant power system event - Victoria Region - Hazelwood transformers -13/02/2024

AEMO ELECTRICITY MARKET NOTICE.

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
114643POWER SYSTEM EVENTS13/02/2024 04:13:14 PM

Significant power system event - Victoria Region - Hazelwood transformers -13/02/2024

AEMO ELECTRICITY MARKET NOTICE.

At 1543 hrs 13/02/2024 At Hazelwood terminal station in the Victoria region the following plant tripped.

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 No2 220kV line.

Refer Market notice 114641

Updates will be provided as additional information becomes available.

This Market Notice is issued in accordance with NER clause 4.8.3.


Manager NEM Real Time Operations
114642POWER SYSTEM EVENTS13/02/2024 04:14:12 PM

Non-credible contingency event - TAS region - 13/02/2024

AEMO ELECTRICITY MARKET NOTICE.

Non-credible contingency event - TAS region - 13/02/2024

At 1602 hrs the Norwood -Scottsdale 110kV line and the Norwood - Scottsdale -Derby 110kV line tripped.

AEMO did not instruct load shedding.

AEMO has been advised 8MW of electrical load and 24MW of generation has been disconnected.

The cause of this non credible contingency event is not known at this stage.

Manager NEM Real Time Operations
114625POWER SYSTEM EVENTS13/02/2024 03:06:04 PM

Significant power system event - Victoria region - 13/02/2024

AEMO ELECTRICITY MARKET NOTICE.

At 1308 hrs 13/02/2024 the Moorabool Sydenham No1 and No2 500 kV lines tripped.
There have been reports of towers on the ground.

In the Victorian region
1000 MW of customer load lost during the fault has been restored
2690 Generation tripped

The AEMO instructed loadshed of 300 MW is being progressively restored.

Updates will be provided as additional information becomes available.

This Market Notice is issued in accordance with NER clause 4.8.3.

Manager NEM Real Time Operations
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