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92001GENERAL NOTICE28/10/2021 02:36:26 PM
Non-credible contingency event more likely to occur due to existence of abnormal condition/s - SA region.
AEMO ELECTRICITY MARKET NOTICE.
AEMO has identified that a non-credible contingency event is more likely to occur because of the existence of abnormal conditions namely severe weather in the SA region.
As at the time of this notice the criteria for reclassification of any non-credible contingency event have not been met, however there is a possibility of severe weather impacting multiple transmission elements in its vicinity.
Conditions can change rapidly and potentially impacted plant may change. Further notices will only be published to advise of any reclassification, or when the abnormal conditions have ceased to impact the likelihood of a non-credible event occurring.
Constraint set I-VS_250 invoked at 1440 hrs 28/10/2021 until further notice.
Manager NEM Real Time Operations
AEMO has identified that a non-credible contingency event is more likely to occur because of the existence of abnormal conditions namely severe weather in the SA region.
As at the time of this notice the criteria for reclassification of any non-credible contingency event have not been met, however there is a possibility of severe weather impacting multiple transmission elements in its vicinity.
Conditions can change rapidly and potentially impacted plant may change. Further notices will only be published to advise of any reclassification, or when the abnormal conditions have ceased to impact the likelihood of a non-credible event occurring.
Constraint set I-VS_250 invoked at 1440 hrs 28/10/2021 until further notice.
Manager NEM Real Time Operations
92000INTER-REGIONAL TRANSFER28/10/2021 11:07:01 AM
Inter-regional transfer limit variation - SA region - 28/10/2021
AEMO ELECTRICITY MARKET NOTICE
Inter-regional transfer limit variation - SA region - 28/10/2021
At 1005 hrs 28/10/2021 there was an unplanned outage of Robertstown - Tungkillo 275 kV Line.
Constraint set invoked: S-RBTU_BC-2CP
This constraint set contains equations with the following interconnectors on the LHS.
V-SA
V-S-MNSP1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
Inter-regional transfer limit variation - SA region - 28/10/2021
At 1005 hrs 28/10/2021 there was an unplanned outage of Robertstown - Tungkillo 275 kV Line.
Constraint set invoked: S-RBTU_BC-2CP
This constraint set contains equations with the following interconnectors on the LHS.
V-SA
V-S-MNSP1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
91999MARKET SYSTEMS28/10/2021 10:26:09 AM
CHG0070884 : MSATS Production Release
Change Number: CHG0070884
Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: MSATS - Consumer Administration and Transfer Solution(CATS)
Change Title: MSATS Production Release
Change Start Date & Time: 03/11/2021 17:30:00 AEST
Change End Date & Time: 04/11/2021 16:00:00 AEST
Outage Start Date & Time: 03/11/2021 17:30:00 AEST
Outage End Date & Time: 03/11/2021 19:30:00 AEST
Environment: Production
Participant Impact and Requirements:
Users will not be able to access MSATS during the outage period.
Meter data processing and RM reports will not be available during the outage period.
User Rights Management (URM) will continue to operate, however the administration screens will not be accessible.
MSATS B2B Transactions and B2B MSATS Screens will be unavailable during this outage
NMI Discovery will not be available during the outage period.
Support Information:
Report any impacts to the AEMO Information and Support Hub or call 1300 236 600.
Please refer to https://aemo.service-now.com/participantportal?d=pp_services_status for any planned/unplanned maintenance activities .
Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: MSATS - Consumer Administration and Transfer Solution(CATS)
Change Title: MSATS Production Release
Change Start Date & Time: 03/11/2021 17:30:00 AEST
Change End Date & Time: 04/11/2021 16:00:00 AEST
Outage Start Date & Time: 03/11/2021 17:30:00 AEST
Outage End Date & Time: 03/11/2021 19:30:00 AEST
Environment: Production
Participant Impact and Requirements:
Users will not be able to access MSATS during the outage period.
Meter data processing and RM reports will not be available during the outage period.
User Rights Management (URM) will continue to operate, however the administration screens will not be accessible.
MSATS B2B Transactions and B2B MSATS Screens will be unavailable during this outage
NMI Discovery will not be available during the outage period.
Support Information:
Report any impacts to the AEMO Information and Support Hub or call 1300 236 600.
Please refer to https://aemo.service-now.com/participantportal?d=pp_services_status for any planned/unplanned maintenance activities .
91998MARKET SYSTEMS28/10/2021 09:57:09 AM
CHG0070639 : MSATS Production Release : Completed
Change Number: CHG0070639
Notification issued to: Market Notice
Notification Type: Completed
Change Type: Normal
Service/Component: MSATS - Consumer Administration and Transfer Solution(CATS)
Change Title: MSATS Production Release
Support Information: Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600.
Notification issued to: Market Notice
Notification Type: Completed
Change Type: Normal
Service/Component: MSATS - Consumer Administration and Transfer Solution(CATS)
Change Title: MSATS Production Release
Support Information: Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600.
91997RECLASSIFY CONTINGENCY27/10/2021 10:54:26 PM
Reclassification of a Non-Credible Contingency Event: Para-Templers West and Magill-Torrens Island A 275kV lines in SA due to severe weather warning.
AEMO ELECTRICITY MARKET NOTICE.
Reclassification of a non-credible contingency event as a credible contingency event due to severe weather warning.
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: SA
Lines: Para-Templers West and Magill-Torrens Island A 275kV lines
until further notice
Constraint set(s) invoked: Nil
Manager NEM Real Time Operations
Reclassification of a non-credible contingency event as a credible contingency event due to severe weather warning.
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: SA
Lines: Para-Templers West and Magill-Torrens Island A 275kV lines
until further notice
Constraint set(s) invoked: Nil
Manager NEM Real Time Operations
91996RECLASSIFY CONTINGENCY27/10/2021 04:29:13 PM
Reclassification of a Non-Credible Contingency Event: Brinkworth-Davenport, Brinkworth-Templers West and Para-Templers West 275kV lines in SA due to severe weather warning.
AEMO ELECTRICITY MARKET NOTICE.
Reclassification of a non-credible contingency event as a credible contingency event due to severe weather warning.
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: SA
Lines: Brinkworth-Davenport, Brinkworth-Templers West and Para-Templers West 275kV lines
Duration: 1630 hrs 27/10/2021 until further notice
Constraint set(s) invoked: Nil
Manager NEM Real Time Operations
Reclassification of a non-credible contingency event as a credible contingency event due to severe weather warning.
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: SA
Lines: Brinkworth-Davenport, Brinkworth-Templers West and Para-Templers West 275kV lines
Duration: 1630 hrs 27/10/2021 until further notice
Constraint set(s) invoked: Nil
Manager NEM Real Time Operations
91995MARKET INTERVENTION27/10/2021 04:03:24 PM
Direction - SA Region - 27/10/2021
AEMO ELECTRICITY MARKET NOTICE
Direction - SA Region - 27/10/2021
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 1605 hrs on 27/10/2021.
Intervention pricing does not apply to this AEMO intervention event.
Manager NEM Real Time Operations
Direction - SA Region - 27/10/2021
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 1605 hrs on 27/10/2021.
Intervention pricing does not apply to this AEMO intervention event.
Manager NEM Real Time Operations
91991MARKET INTERVENTION27/10/2021 04:59:45 PM
Cancellation - AEMO Intervention Event - Intervention dispatch intervals - Direction SA region - 14/10/2021
AEMO ELECTRICITY MARKET NOTICE
Cancellation - AEMO Intervention Event - Intervention dispatch intervals - Direction SA region - 14/10/2021
Refer Market Notice 91709
The AEMO Intervention Event and all associated directions are cancelled from 1700 hrs 27/10/2021
Manager NEM Real Time Operations
Cancellation - AEMO Intervention Event - Intervention dispatch intervals - Direction SA region - 14/10/2021
Refer Market Notice 91709
The AEMO Intervention Event and all associated directions are cancelled from 1700 hrs 27/10/2021
Manager NEM Real Time Operations
91989MARKET INTERVENTION27/10/2021 02:02:50 PM
Possible intervention to manage power system security in South Australia (SA) Region
AEMO ELECTRICITY MARKET NOTICE
Possible intervention to manage power system security in South Australia (SA) Region
The synchronous generating units currently expected to be synchronised in SA from 2230 hrs 27/10/2021 to 0400 hrs 29/10/2021 will be inadequate to maintain sufficient system strength in SA and hence a secure operating state.
AEMO estimates that, in the absence of sufficient market response by 1600 hrs 27/10/2021, 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 South Australia (SA) Region
The synchronous generating units currently expected to be synchronised in SA from 2230 hrs 27/10/2021 to 0400 hrs 29/10/2021 will be inadequate to maintain sufficient system strength in SA and hence a secure operating state.
AEMO estimates that, in the absence of sufficient market response by 1600 hrs 27/10/2021, 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