Market Notices

AEMO ELECTRICITY MARKET NOTICE.

Update - Lightning vulnerable lines in QLD region

Refer to AEMO Electricity Market Notice 121840

Fix typo: Line 7141 should read Line 7143

At 2026 hrs 12/12/2024 the Kamerunga to Barron Gorge 132 kV Line 7184 and the Kamerunga to Barron Gorge 132 kV Line 7143 tripped.

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

In accordance with SO_OP_3715, AEMO now considers the Kamerunga to Barron Gorge 132 kV Line 7184 and the Kamerunga to Barron Gorge 132 kV Line 7143 to be vulnerable with a category of probable due to lightning.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE.

Reclassification of a non-credible contingency event as a credible contingency event due to lightning.

AEMO considers the simultaneous trip of the following circuits to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.

Region: QLD

Lines: Kamerunga to Barron Gorge No.7184 132 kV and the Kamerunga to Barron Gorge No.7143 132 kV lines
Duration: 13/12/2024 13:07 until further notice
Constraint set(s) invoked: Nil

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE.

Update - Lightning vulnerable lines in QLD region

Refer to AEMO Electricity Market Notice 121806

At 2026 hrs 12/12/2024 the Kamerunga to Barron Gorge 132 kV Line 7184 and the Kamerunga to Barron Gorge 132 kV Line 7141 tripped.

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

In accordance with SO_OP_3715, AEMO now considers the Kamerunga to Barron Gorge 132 kV Line 7184 and the Kamerunga to Barron Gorge 132 kV Line 7141 to be vulnerable with a category of probable due to lightning.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.

Region: QLD1

Lines: Chalumbin - Turkinje No.7165 132 kV and Chalumbin - Turkinje No.7166 132 kV

Duration: 13/12/2024 12:51 until further notice

Constraint set(s) invoked:
NONE

Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.

Region: QLD1

Lines: Tumoulin - Woree No.877 275 kV and Chalumbin - Turkinje No.7166 132 kV

Duration: 13/12/2024 12:51 until further notice

Constraint set(s) invoked:
NONE

Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.

Region: QLD1

Lines: Collinsville - Stoney Creek 7306 132KV LINE and Collinsville - Newlands 7121 132KV LINE

Duration: 13/12/2024 12:48 until further notice

Constraint set(s) invoked:
NONE

Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.

Region: QLD1

Lines: Collinsville North - Proserpine No.7125 132 kV and Collinsville North - Proserpine No.7126 132 kV

Duration: 13/12/2024 12:42 until further notice

Constraint set(s) invoked:
NONE

Auto-generated on behalf of 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.

NSW
Mudgee Ap (39+ Deg C): 16th Dec, 17th Dec
Yass (39+ Deg C): 16th Dec

SA
Adelaide West Terrace (39+ Deg C): 15th Dec
Clare High School (39+ Deg C): 15th Dec
Port Augusta Ap (39+ Deg C): 14th Dec, 15th Dec, 16th Dec

VIC
Ararat Prison (39+ Deg C): 16th Dec
Latrobe Valley Ap (39+ Deg C): 16th Dec
Melbourne Olympic Park (39+ Deg C): 16th Dec
Mildura Ap (39+ Deg C): 15th Dec, 16th 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

AEMO ELECTRICITY MARKET NOTICE

Cancellation of reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any lightning activity in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.

Region: QLD1

Lines: Ross - Tully South - Woree No.8905 275 kV line and Cardwell - Tully No.7389 132kV line

Cancellation time: 13/12/2024 03:26

Constraint set(s) revoked:
NONE

Refer AEMO Electricity Market Notice 121801

Auto-generated on behalf of Manager NEM Real Time Operations