Market Notices

82312RECLASSIFY CONTINGENCY22/01/2021 10:09:10 PM

Cancellation of a Non-Credible Contingency Event: Bulli Creek - Dumaresq 8L 330KV line and Bulli Creek - Dumaresq 8M 330KV line in QLD1 due to Lightning.

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: Bulli Creek - Dumaresq 8L 330KV and Bulli Creek - Dumaresq 8M 330KV

Cancellation time: 22/01/2021 22:09

Constraint set(s) revoked:
I-QNI_ONE_PHASE_N-2 Constraint set contains the following interconnector(s) on the left hand side:
NSW1-QLD1


Refer AEMO Electricity Market Notice 82311

Auto-generated on behalf of Manager NEM Real Time Operations
     
82311RECLASSIFY CONTINGENCY22/01/2021 09:07:00 PM

Reclassification of a Non-Credible Contingency Event: Bulli Creek - Dumaresq 8L 330KV line and Bulli Creek - Dumaresq 8M 330KV line in QLD1 due to Lightning.

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: Bulli Creek - Dumaresq 8L 330KV and Bulli Creek - Dumaresq 8M 330KV

Duration: 22/01/2021 21:06 until further notice

Constraint set(s) invoked:
I-QNI_ONE_PHASE_N-2 Constraint set contains the following interconnector(s) on the left hand side:
NSW1-QLD1


Auto-generated on behalf of Manager NEM Real Time Operations
     
82310RECLASSIFY CONTINGENCY22/01/2021 07:29:10 PM

Cancellation of a Non-Credible Contingency Event: Bayswater - Mt Piper No.5A3 500kV line and Wollar - Mt Piper No.5A5 500kV line in NSW1 due to Lightning.

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: NSW1

Lines: Bayswater - Mt Piper No.5A3 500kV and Wollar - Mt Piper No.5A5 500kV

Cancellation time: 22/01/2021 19:29

Constraint set(s) revoked:
NONE

Refer AEMO Electricity Market Notice 82309

Auto-generated on behalf of Manager NEM Real Time Operations
     
82309RECLASSIFY CONTINGENCY22/01/2021 06:24:37 PM

Reclassification of a Non-Credible Contingency Event: Bayswater - Mt Piper No.5A3 500kV line and Wollar - Mt Piper No.5A5 500kV line in NSW1 due to Lightning.

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: NSW1

Lines: Bayswater - Mt Piper No.5A3 500kV and Wollar - Mt Piper No.5A5 500kV

Duration: 22/01/2021 18:24 until further notice

Constraint set(s) invoked:
NONE

Auto-generated on behalf of Manager NEM Real Time Operations
     
82308RECLASSIFY CONTINGENCY22/01/2021 05:09:10 PM

Cancellation of a Non-Credible Contingency Event: Bayswater - Mt Piper No.5A3 500kV line and Wollar - Mt Piper No.5A5 500kV line in NSW1 due to Lightning.

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: NSW1

Lines: Bayswater - Mt Piper No.5A3 500kV and Wollar - Mt Piper No.5A5 500kV

Cancellation time: 22/01/2021 17:09

Constraint set(s) revoked:
NONE

Refer AEMO Electricity Market Notice 82307

Auto-generated on behalf of Manager NEM Real Time Operations
     
82307RECLASSIFY CONTINGENCY22/01/2021 04:04:36 PM

Reclassification of a Non-Credible Contingency Event: Bayswater - Mt Piper No.5A3 500kV line and Wollar - Mt Piper No.5A5 500kV line in NSW1 due to Lightning.

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: NSW1

Lines: Bayswater - Mt Piper No.5A3 500kV and Wollar - Mt Piper No.5A5 500kV

Duration: 22/01/2021 16:04 until further notice

Constraint set(s) invoked:
NONE

Auto-generated on behalf of Manager NEM Real Time Operations
     
82306INTER-REGIONAL TRANSFER22/01/2021 01:18:05 PM

Inter-Regional Transfer limit variation - Murraylink power transfer limit reduction due to high temperature for 23, 24 and 25 January 2021

AEMO ELECTRICITY MARKET NOTICE

Inter-Regional Transfer limit variation - Murraylink power transfer limit reduction due to high temperature.

Murraylink power transfer limit advice has been reduced based on APA advice, consistent with the high forecast ambient temperatures in the vicinity of Murraylink (Berri and Redcliffe) for 23, 24 and 25 January 2021.

The following constraints have been invoked:

Constraint set I-SVML_180 23/1/2021 1300 - 1600 hrs
Constraint set I-VSML_180 23/1/2021 1300 - 1600 hrs
Constraint set I-SVML_160 23/1/2021 1600 - 1900 hrs
Constraint set I-VSML_160 23/1/2021 1600 - 1900 hrs
Constraint set I-SVML_190 23/1/2021 1900 - 2200 hrs
Constraint set I-VSML_190 23/1/2021 1900 - 2200 hrs

Constraint set I-SVML_190 24/1/2021 1100 - 1300 hrs
Constraint set I-VSML_190 24/1/2021 1100 - 1300 hrs
Constraint set I-SVML_80 24/1/2021 1300 - 1600 hrs
Constraint set I-VSML_80 24/1/2021 1300 - 1600 hrs
Constraint set I-SVML_30 24/1/2021 1600 - 1900 hrs
Constraint set I-VSML_30 24/1/2021 1600 - 1900 hrs
Constraint set I-SVML_105 24/1/2021 1900 - 2200 hrs
Constraint set I-VSML_105 24/1/2021 1900 - 2200 hrs

Constraint set I-SVML_145 25/1/2021 1100 - 1300 hrs
Constraint set I-VSML_145 25/1/2021 1100 - 1300 hrs
Constraint set I-SVML_80 25/1/2021 1300 - 1900 hrs
Constraint set I-VSML_80 25/1/2021 1300 - 1900 hrs
Constraint set I-SVML_190 25/1/2021 1900 - 2200 hrs
Constraint set I-VSML_190 25/1/2021 1900 - 2200 hrs

These constraints will be continually reviewed and adjusted as necessary.

Operations Planning
     
82305GENERAL NOTICE22/01/2021 10:34:10 AM

NEM Local Temperature Alerts for SA, TAS, VIC from 22 Jan 2021 to 26 Jan 2021

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
Adelaide West Terrace (39+ Deg C): 24th Jan
Clare High School (39+ Deg C): 23rd Jan, 24th Jan
Mt Gambier Ap (39+ Deg C): 24th Jan
Port Augusta Ap (39+ Deg C): 22nd Jan, 23rd Jan, 24th Jan

TAS
Launceston Ti Tree Bend (33+ Deg C): 25th Jan

VIC
Latrobe Valley Ap (39+ Deg C): 25th Jan
Melbourne Olympic Park (39+ Deg C): 25th Jan
Mildura Ap (39+ Deg C): 23rd Jan, 24th Jan, 25th 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
     
82304RECLASSIFY CONTINGENCY22/01/2021 09:15:22 AM

Reclassification of a Non Credible Contingency event to a Credible Event - Kareeya Power Station - Qld Region - 22/01/2021

AEMO ELECTRICITY MARKET NOTICE.

Reclassification of a Non Credible Contingency event to a Credible Event - Kareeya Power Station - Qld Region - 22/01/2021

Refer AEMO Electricity Market Notice 82280, 82296 and 82303

At 0255 hrs the Kareeya PS Units 1, 2 and 4 tripped.

AEMO is not satisfied that this non credible event is unlikely to re-occur.

Based on the current information, AEMO has now reclassified the loss of Kareeya Power Station as a credible contingency event from 0830 hrs until further notice.

Manager NEM Real Time Operations
     
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