Market Notices

117347MARKET INTERVENTION15/07/2024 02:02:03 PM

Update - Foreseeable AEMO intervention in SA region

AEMO ELECTRICITY MARKET NOTICE

Update - Foreseeable AEMO intervention in SA region

Refer AEMO Electricity Market Notice 117346

AEMO has identified a foreseeable circumstance that may require an AEMO intervention event in the SA region from 2200 hrs 15/07/2024.

The foreseeable circumstance requiring the need for intervention is Voltage.

AEMO estimates that, in the absence of sufficient market response by 1600 hrs 15/07/2024, AEMO may need to intervene by issuing a direction.

Manager NEM Real Time Operations
117346MARKET INTERVENTION15/07/2024 01:49:44 PM

Foreseeable AEMO intervention under clause 4.8.5A (a) of the NER in SA region

AEMO ELECTRICITY MARKET NOTICE

Foreseeable AEMO intervention under clause 4.8.5A (a) of the NER in SA region

AEMO has identified a foreseeable circumstance that may require an AEMO intervention event in the SA region from 2230 hrs 15/07/2024.

The foreseeable circumstance requiring the need for intervention is Voltage.

Manager NEM Real Time Operations
117341RECLASSIFY CONTINGENCY13/07/2024 04:44:46 PM

Cancellation of a Non-Credible Contingency Event: Bannaby - Mt Piper 5A6 500kV line and Bannaby - Mt Piper 5A7 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: Bannaby - Mt Piper 5A6 500kV and Bannaby - Mt Piper 5A7 500kV

Cancellation time: 13/07/2024 16:44

Constraint set(s) revoked:
N-5A6+5A7_N-2 Constraint set contains the following interconnector(s) on the left hand side:
N-Q-MNSP1
NSW1-QLD1
VIC1-NSW1


Refer AEMO Electricity Market Notice 117340

Auto-generated on behalf of Manager NEM Real Time Operations
117340RECLASSIFY CONTINGENCY13/07/2024 03:41:56 PM

Reclassification of a Non-Credible Contingency Event: Bannaby - Mt Piper 5A6 500kV line and Bannaby - Mt Piper 5A7 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: Bannaby - Mt Piper 5A6 500kV and Bannaby - Mt Piper 5A7 500kV

Duration: 13/07/2024 15:41 until further notice

Constraint set(s) invoked:
N-5A6+5A7_N-2 Constraint set contains the following interconnector(s) on the left hand side:
N-Q-MNSP1
NSW1-QLD1
VIC1-NSW1


Auto-generated on behalf of Manager NEM Real Time Operations
117312MARKET INTERVENTION07/07/2024 02:04:11 PM

Cancellation - AEMO Intervention Event - SA region 05/07/2024

AEMO ELECTRICITY MARKET NOTICE

Cancellation - AEMO Intervention Event - SA region 05/07/2024

Refer to Market Notice 117295

The AEMO Intervention Event and all associated directions are cancelled from 1400 hrs on 07/07/2024.



Manager NEM Real Time Operations
117311MARKET INTERVENTION07/07/2024 02:01:02 PM

Cancellation: Direction issued to: AGL SA Generation Pty Limited - TORRB4 TORRENS ISLAN

AEMO ELECTRICITY MARKET NOTICE

Cancellation: Direction issued to: AGL SA Generation Pty Limited - TORRB4 TORRENS ISLAN

Refer to Market Notice 117310

Direction is cancelled from: 1400 hrs 07/07/2024

Manager NEM Real Time Operations
117310MARKET INTERVENTION07/07/2024 01:04:48 PM

Update - Direction - SA Region - 05/07/2024

AEMO ELECTRICITY MARKET NOTICE.

Update Direction - AGL SA Generation Pty Limited - TORRB4 TORRENS ISLAN

Refer AEMO Electricity Market Notice 117303

The TORRB4 TORRENS ISLAN direction is now expected to stay in place until 1400 hrs 07/07/2024.

The direction update is issued at 1300 hrs 07/07/2024.

Manager NEM Real Time Operations
117307RECLASSIFY CONTINGENCY06/07/2024 11:04:37 PM

Cancellation: Reclassification of non-credible contingency event due to existence of widespread abnormal conditions - SA region.

AEMO ELECTRICITY MARKET NOTICE.

AEMO considers the occurrence of a non-credible contingency event due to the widespread abnormal conditions advised in AEMO Electricity Market Notice 117306 is no longer reasonably possible and accordingly its classification has reverted to non-credible.

Cancellation time: 2300 hrs 06/07/2024.

Constraint set revoked: I-VS_250

Manager NEM Real Time Operations
117306RECLASSIFY CONTINGENCY06/07/2024 09:34:08 PM

Reclassification of non-credible contingency event due to existence of widespread abnormal conditions - SA region.

AEMO ELECTRICITY MARKET NOTICE.

AEMO has identified that a non-credible contingency event impacting the power system is more likely to occur and is considered reasonably possible because of the existence of widespread abnormal conditions namely severe weather in the SA region.

AEMO has therefore reclassified the occurrence of a non-credible contingency event involving multiple plant due to these abnormal conditions as credible.

AEMO has taken the following action to maintain power system security at 2120 hrs 06/07/2024.

Constraint set invoked: I-VS_250

Duration: 2120 hrs 06/07/2024 until further notice

Need for further measures is being monitored and further measures may be implemented in line with the Power System Security Guidelines (SO_OP_3715).

Manager NEM Real Time Operations
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