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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
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
112553MARKET INTERVENTION20/12/2023 05:00:21 PM
Update - Direction - SA Region - 18/12/2023
AEMO ELECTRICITY MARKET NOTICE
Update - Direction - SA Region - 18/12/2023
Refer Market Notice 112534
The AEMO intervention event that commenced from interval ending 1635 hrs on 18/12/2023 is continuing.
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.
Manager NEM Real Time Operations
Update - Direction - SA Region - 18/12/2023
Refer Market Notice 112534
The AEMO intervention event that commenced from interval ending 1635 hrs on 18/12/2023 is continuing.
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.
Manager NEM Real Time Operations
112534MARKET INTERVENTION19/12/2023 05:03:00 PM
Update - Direction - SA Region - 18/12/2023
AEMO ELECTRICITY MARKET NOTICE
Update - Direction - SA Region - 18/12/2023
Refer Market Notice 112492
The AEMO intervention event that commenced from interval ending 1635 hrs on 18/12/2023 is continuing.
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.
Manager NEM Real Time Operations
Update - Direction - SA Region - 18/12/2023
Refer Market Notice 112492
The AEMO intervention event that commenced from interval ending 1635 hrs on 18/12/2023 is continuing.
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.
Manager NEM Real Time Operations
112492MARKET INTERVENTION18/12/2023 04:27:44 PM
Direction - SA region 18/12/2023
AEMO ELECTRICITY MARKET NOTICE.
Direction - SA region 18/12/2023
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 1635 hrs on 18/12/2023.
Intervention pricing does not apply to this AEMO intervention event.
Manager NEM Real Time Operations
Direction - SA region 18/12/2023
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 1635 hrs on 18/12/2023.
Intervention pricing does not apply to this AEMO intervention event.
Manager NEM Real Time Operations
112489MARKET INTERVENTION18/12/2023 02:24:39 PM
Update - Possible intervention to manage power system security in SA region
AEMO ELECTRICITY MARKET NOTICE
Update - Possible intervention to manage power system security in SA region
Refer AEMO Electricity Market Notice 112482
The synchronous generating units currently expected to be synchronised in SA from 0000 hrs 19/12/2023 will be inadequate to maintain a secure operating state in SA .
AEMO estimates that, in the absence of sufficient market response by 1630 hrs 18/12/2023, 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
Update - Possible intervention to manage power system security in SA region
Refer AEMO Electricity Market Notice 112482
The synchronous generating units currently expected to be synchronised in SA from 0000 hrs 19/12/2023 will be inadequate to maintain a secure operating state in SA .
AEMO estimates that, in the absence of sufficient market response by 1630 hrs 18/12/2023, 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
112488MARKET INTERVENTION18/12/2023 01:02:55 PM
Cancellation - AEMO Intervention Event - Intervention trading intervals - Direction SA region 17/12/2023
AEMO ELECTRICITY MARKET NOTICE
Cancellation - AEMO Intervention Event - Intervention trading intervals - Direction SA region 17/12/2023
Refer Market Notice 112469
The AEMO Intervention Event and all associated directions are cancelled from 1230 hrs 18/12/2023
Manager NEM Real Time Operations
Cancellation - AEMO Intervention Event - Intervention trading intervals - Direction SA region 17/12/2023
Refer Market Notice 112469
The AEMO Intervention Event and all associated directions are cancelled from 1230 hrs 18/12/2023
Manager NEM Real Time Operations
112485RESERVE NOTICE18/12/2023 12:19:11 PM
STPASA - Cancellation of the Forecast Lack Of Reserve Level 2 (LOR2) in the NSW Region on 19/12/2023
AEMO ELECTRICITY MARKET NOTICE
The Forecast LOR2 condition in the NSW region advised in AEMO Electricity Market Notice No. 112483 is cancelled at 1100 hrs 18/12/2023.
No LOR2 condition is currently forecast in the STPASA period.
AEMO Operations
The Forecast LOR2 condition in the NSW region advised in AEMO Electricity Market Notice No. 112483 is cancelled at 1100 hrs 18/12/2023.
No LOR2 condition is currently forecast in the STPASA period.
AEMO Operations
112483RESERVE NOTICE18/12/2023 05:03:52 AM
STPASA - Update to the Forecast Lack Of Reserve Level 2 (LOR2) in the NSW Region on 19/12/2023
AEMO ELECTRICITY MARKET NOTICE
The Forecast LOR2 condition in the NSW region advised in AEMO Electricity Market Notice No. 112471 has been updated at 0500 hrs 18/12/2023 to the following:
From 1230 hrs 19/12/2023 to 1600 hrs 19/12/2023.
The forecast capacity reserve requirement is 1071 MW.
The minimum capacity reserve available is 42 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
The Forecast LOR2 condition in the NSW region advised in AEMO Electricity Market Notice No. 112471 has been updated at 0500 hrs 18/12/2023 to the following:
From 1230 hrs 19/12/2023 to 1600 hrs 19/12/2023.
The forecast capacity reserve requirement is 1071 MW.
The minimum capacity reserve available is 42 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
112482MARKET INTERVENTION18/12/2023 05:05:06 AM
Possible intervention to manage power system security in SA Region
AEMO ELECTRICITY MARKET NOTICE
Possible intervention to manage power system security in SA Region
The synchronous generating units currently expected to be synchronised in SA from 0100 hrs 19/12/2023 will be inadequate to maintain a secure operating state in SA.
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
Possible intervention to manage power system security in SA Region
The synchronous generating units currently expected to be synchronised in SA from 0100 hrs 19/12/2023 will be inadequate to maintain a secure operating state in SA.
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