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Cancellation of a Non-Credible Contingency Event: Armidale - Dumaresq 8C 330kV line and Armidale - Sapphire WF 8E 330kV line in NSW1 due to Lightning.
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: Armidale - Dumaresq 8C 330kV and Armidale - Sapphire WF 8E 330kV
Cancellation time: 17/12/2023 20:49
Constraint set(s) revoked:
N-ARDM_ARSR_1PH_N-2 Constraint set contains the following interconnector(s) on the left hand side:
N-Q-MNSP1
NSW1-QLD1
Refer AEMO Electricity Market Notice 112474
Auto-generated on behalf of Manager NEM Real Time Operations
Reclassification of a Non-Credible Contingency Event: Armidale - Dumaresq 8C 330kV line and Armidale - Sapphire WF 8E 330kV line in NSW1 due to Lightning.
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: Armidale - Dumaresq 8C 330kV and Armidale - Sapphire WF 8E 330kV
Duration: 17/12/2023 18:46 until further notice
Constraint set(s) invoked:
N-ARDM_ARSR_1PH_N-2 Constraint set contains the following interconnector(s) on the left hand side:
N-Q-MNSP1
NSW1-QLD1
Auto-generated on behalf of Manager NEM Real Time Operations
STPASA - Update to the Forecast Lack Of Reserve Level 2 (LOR2) in the NSW Region on 19/12/2023
The Forecast LOR2 condition in the NSW region advised in AEMO Electricity Market Notice No. 112427 has been updated at 1515 hrs 17/12/2023 to the following:
From 1230 hrs 19/12/2023 to 1600 hrs 19/12/2023.
The forecast capacity reserve requirement is 1346 MW.
The minimum capacity reserve available is 205 MW.
AEMO is seeking a market response.
AEMO estimates that the latest time at which permission can be given for a planned outage to proceed is 0530 hrs on 19/12/2023.
Manager NEM RTO
Update - Possible intervention to manage power system security in SA region
Possible intervention to manage power system security in SA region
The synchronous generating units currently expected to be synchronised in SA from 0100 hrs 18/12/2023 will be inadequate to maintain a secure operating state in SA .
AEMO estimates that, in the absence of sufficient market response by 1700 hrs 17/12/2023, AEMO may need to intervene by issuing a direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised to maintain power system security in SA.
Manager NEM Real Time Operations
Direction - SA region 17/12/2023
Direction - SA region 17/12/2023
In accordance with section 116 of the National Electricity Law, AEMO has issued a direction to a participant in the SA region. For the purposes of the National Electricity Rules this is a direction under clause 4.8.9(a).
The direction was necessary to maintain the power system in a secure operating state.
AEMO may issue or revoke additional directions in order to meet the current requirement, unless sufficient market response is provided. A further market notice will be issued when all directions related to this requirement have been cancelled.
The issue of the direction commences an AEMO intervention event. AEMO declares all trading intervals during the event to be intervention trading intervals, commencing from the interval ending 1700 hrs on 17/12/2023.
Intervention pricing does not apply to this AEMO intervention event.
Manager NEM Real Time Operations
Possible intervention to manage power system security in SA region
Possible intervention to manage power system security in SA region
The synchronous generating units currently expected to be synchronised in SA from 1700 hrs 18/12/2023 will be inadequate to maintain a secure operating state in SA .
AEMO estimates that, in the absence of sufficient market response by 1700 hrs 17/12/2023, AEMO may need to intervene by issuing a direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised to maintain power system security in SA.
Manager NEM Real Time Operations
[EventId:202312171400_review] Prices for interval 17-Dec-2023 14:00 are subject to review
Issued by Australian Energy Market Operator Ltd at 1355 hrs on 17 December 2023
PRICES ARE SUBJECT TO REVIEW for trading interval 17-Dec-2023 14:00.
AEMO is reviewing these prices in accordance with:
- Clause 3.9.2B of the National Electricity Rules for Manifestly Incorrect Inputs
This is an AEMO autogenerated Market Notice.
[EventId:202312171355_review] Prices for interval 17-Dec-2023 13:55 are subject to review
Issued by Australian Energy Market Operator Ltd at 1350 hrs on 17 December 2023
PRICES ARE SUBJECT TO REVIEW for trading interval 17-Dec-2023 13:55.
AEMO is reviewing these prices in accordance with:
- Clause 3.9.2B of the National Electricity Rules for Manifestly Incorrect Inputs
This is an AEMO autogenerated Market Notice.
[EventId:202312171350_review] Prices for interval 17-Dec-2023 13:50 are subject to review
Issued by Australian Energy Market Operator Ltd at 1345 hrs on 17 December 2023
PRICES ARE SUBJECT TO REVIEW for trading interval 17-Dec-2023 13:50.
AEMO is reviewing these prices in accordance with:
- Clause 3.9.2B of the National Electricity Rules for Manifestly Incorrect Inputs
This is an AEMO autogenerated Market Notice.