Market Notices

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

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

AEMO ELECTRICITY MARKET NOTICE.

Significant power system event - 13 Feb 2024

At 1308 hrs 13/02/2024 a significant power system event occurred.

Description of event - Multiple tripping of generation and transmission lines in the Vic region

Transmission element(s) tripped - Moorabool Sydenham No1 and No2 500 kV lines tripped

Region/s - Vic

Load interrupted - in excess of 1000 MW

Generation volume tripped - 2300 MW

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

AEMO ELECTRICITY MARKET NOTICE

Variation to FCAS regulation raise requirements: NEM Mainland - 13/02/2024

FCAS Raise regulation requirements have been increased.to manage frequency.

The following constraint set has been invoked.

F-MAIN_RREG_0450 at 1200 hrs.


Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

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
Clare High School (39+ Deg C): 12th Feb
Port Augusta Ap (39+ Deg C): 12th Feb, 13th Feb

VIC
Mildura Ap (39+ Deg C): 12th Feb, 13th 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

AEMO ELECTRICITY MARKET NOTICE

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): 11th Feb, 12th Feb

VIC
Mildura Ap (39+ Deg C): 12th Feb, 13th 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

AEMO ELECTRICITY MARKET NOTICE

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): 11th Feb, 12th 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

AEMO ELECTRICITY MARKET NOTICE

Refer to market notice 113265

There is an opportunity for testing QNI Minor for flows from NSW to Qld up to 750 MW on Wednesday 7th February 2024 from 1400 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

AEMO ELECTRICITY MARKET NOTICE

Following review of the operation of the Very Fast FCAS market, from 1300 hrs AEST on Monday 12 Febraury AEMO will:

Increase the cap on dispatch of Very Fast Lower (L1) Contingency FCAS from 100 MW to 125 MW

Retain the cap on dispatch of Very Fast Raise (R1) Contingency FCAS at 225 MW

No other changes to the dispatch of Very Fast FCAS or FCAS constraint equation changes will be made on this date.

For information on the Fast Frequency Response (FFR) initiative please visit the website at: https://www.aemo.com.au/initiatives/major-programs/fast-frequency-response

Andrew Groom
AEMO Operations