Market Notices

112980GENERAL NOTICE02/01/2024 10:29:09 AM

NEM Local Temperature Alerts for VIC from 02 Jan 2024 to 06 Jan 2024

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.

VIC
Mildura Ap (39+ Deg C): 2nd Jan

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
112974GENERAL NOTICE01/01/2024 09:58:53 PM

Update - Lightning vulnerable equipment in QLD region

AEMO ELECTRICITY MARKET NOTICE.

Update - Lightning vulnerable equipment in QLD region

Special Reclassification of Transmission Equipment during lightning

Refer to AEMO Electricity Market Notice 112581 and 112884.

At 1424 hrs 21/12/2023, the Middle Ridge 275 kV circuit breakers 5432 and 5422 tripped. This offloaded the H14 Middle Ridge No.2 and No. 3 275/110 kV transformers

The cause of the trip was identified as due to lightning.

In accordance with SO_OP_3715, AEMO now considers the H14 Middle Ridge No. 2 and No. 3 275/110 kV transformers to be vulnerable due to lightning.

Manager NEM Real Time Operations
112942GENERAL NOTICE31/12/2023 04:00:58 PM

Cancellation of Minimum System Load 1 (MSL1) in the VIC Region on 31/12/2023

AEMO ELECTRICITY MARKET NOTICE

Cancellation - MSL1 - VIC Region

Refer Market Notice 112936

The MSL1 condition for 31/12/2023 is cancelled at 1600 hrs 31/12/2023

Manager NEM Real Time Operations
112936GENERAL NOTICE31/12/2023 10:47:14 AM

Minimum System Load 1 (MSL1) in the VIC Region on 31/12/2023

AEMO ELECTRICITY MARKET NOTICE

AEMO has detected that there is an elevated risk of insufficient demand to maintain a secure operating state in the Victorian region from 1100 hrs 31/12/2023 to 1400 hrs 31/12/2023.
Minimum scheduled demand is forecast to be 1300 MW at 1300 hrs and the secure threshold for the forecast operating conditions is 2,000 MW.
AEMO is seeking a market response.
An insufficient market response may require AEMO to take action or intervene to maintain power system security in Victoria. This may result in action such as the direction of scheduled generation, curtailment of non-scheduled generation, and/or a direction to increase operational demand.

Manager NEM Real Time Operations
112805GENERAL NOTICE27/12/2023 10:36:51 AM

NEM Local Temperature Alerts for QLD from 27 Dec 2023 to 31 Dec 2023

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.

QLD
Dalby Ap (37+ Deg C): 29th Dec

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
112803GENERAL NOTICE27/12/2023 10:08:01 AM

Update - Lightning vulnerable lines in QLD region

AEMO ELECTRICITY MARKET NOTICE.

Update - Lightning vulnerable lines in QLD region

Refer to AEMO Electricity Market Notice 112794

At 2345 hrs 26/12/2023, the Clare South - Strathmore No.7208 and Strathmore - Clare South tee King Creek No.7128 132 kV Lines tripped.

The cause of the trip was identified as due to Lightning.

In accordance with SO_OP_3715, AEMO now considers the Clare South - Strathmore No.7208 and Strathmore - Clare South tee King Creek No.7128 132 kV Lines to be vulnerable with a category of "Probable" due to Lightning.

Manager NEM Real Time Operations
112793POWER SYSTEM EVENTS27/12/2023 12:04:43 AM

Non-credible contingency event - QLD region - 26/12/2023

AEMO ELECTRICITY MARKET NOTICE.

Non-credible contingency event - QLD region - 26/12/2023

At 2345 hrs the Strathmore Clare South 7208 and the Strathmore Clare South Tee King Creek 7128 132kV lines tripped.

AEMO did not instruct load shedding.

AEMO has not been advised of any disconnection of bulk electrical load.

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

Manager NEM Real Time Operations
112579POWER SYSTEM EVENTS21/12/2023 03:12:07 PM

Non-credible contingency event - QLD region - 21/12/2023

AEMO ELECTRICITY MARKET NOTICE.

Non-credible contingency event - QLD region - 21/12/2023

At 1424 hrs the H14 Middle Ridge 275 kV circuit breakers 5432 and 5422 tripped. This offloaded the H14 Middle Ridge No.2 and No.3 275/110 kV transformers.

AEMO did not instruct load shedding.

AEMO has not been advised of any disconnection of bulk electrical load.

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


Manager NEM Real Time Operations
112559GENERAL NOTICE21/12/2023 09:53:10 AM

QNI Minor testing (NSW to Qld) 21st December 2023

AEMO ELECTRICITY MARKET NOTICE

Refer to market notice 112396

There is an opportunity for testing QNI Minor for flows from NSW to Qld up to 750 MW on Thursday 21st December from 1400 to 1700hrs.

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
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