Market Notices

115794POWER SYSTEM EVENTS25/03/2024 03:48:06 PM

Non-credible contingency event - SA region - Torrens Island 25/03/2024

AEMO ELECTRICITY MARKET NOTICE.

Non-credible contingency event - SA region - Torrens Island 25/03/2024

At 1412 hrs there was an unplanned outage of the following elements:
Torrens Island BW3 275 kV CB
Torrens Island BC3 275 kV CB
Torrens Island - Lefevre 275 kV line

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
115783POWER SYSTEM EVENTS25/03/2024 02:17:51 PM

Update - Non-credible contingency event - SA region - 25/03/2024

AEMO ELECTRICITY MARKET NOTICE.

Update - Non-credible contingency event - SA region - 25/03/2024

Refer AEMO Electricity Market Notice 115777

At 1350 hrs the Davenport - Brinkworth 275 kV line, Brinkworth No 3 275/132 kV transformer
and Brinkworth - Templers West 275 kV line was returned to service.

The cause of this non-credible contingency event has been identified and AEMO is satisfied that another occurrence of this event is unlikely under the current circumstances.

AEMO will not reclassify this event as a credible contingency event.

Manager NEM Real Time Operations
115778INTER-REGIONAL TRANSFER25/03/2024 09:43:59 AM

Inter-regional transfer limit variation - SA region - 25/03/2024

AEMO ELECTRICITY MARKET NOTICE

Inter-regional transfer limit variation - SA region - 25/03/2024

Refer market notice: 115777

At 0810 hrs 25/03/2024 there was an unplanned outage of elements:

Davenport - Brinkworth 275 kV line
Brinkworth No 3 275/132 kV transformer
Brinkworth - Templers West 275 kV line

Constraint set(s) invoked: S-X_DVBR+BRTW+TWPA


This constraint set(s) contains equations with the following interconnectors on the LHS.
V-S_MNSP1

Refer to the AEMO Network Outage Scheduler for further information.

Manager NEM Real Time Operations
115777POWER SYSTEM EVENTS25/03/2024 09:27:07 AM

Non-credible contingency event - SA region - 25/03/2024

AEMO ELECTRICITY MARKET NOTICE.

Non-credible contingency event - SA region - 25/03/2024

At 0810 hrs there was an unplanned outage of the following elemets:
Davenport - Brinkworth 275 kV line
Brinkworth No 3 275/132 kV transformer
Brinkworth - Templers West 275 kV line

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
115775INTER-REGIONAL TRANSFER25/03/2024 06:49:58 AM

Inter-regional transfer limit variation - Armidale - Uralla 8U 330 kV line - NSW region - 25/03/2024

AEMO ELECTRICITY MARKET NOTICE

Inter-regional transfer limit variation - Armidale - Uralla 8U 330 kV line - NSW region - 25/03/2024

A planned outage of Armidale - Uralla 8U 330 kV line in the NSW region was scheduled from 0500 hrs 25/03/2024 to 1500 hrs 25/03/2024.

The outage has been returned to service at 0645 hrs 25/03/2024.

Constraint set(s) revoked:
N-ARUL_8U
N-TW_SVC
N-X_8U+DM+TW_SVC
N-MORBOR

This constraint set(s) contains equations with the following interconnectors on the LHS.
N-Q-MNSP1
NSW1-QLD1


Refer to the AEMO Network Outage Scheduler for further information.

Manager NEM Real Time Operations
115772INTER-REGIONAL TRANSFER24/03/2024 04:47:46 PM

Inter-Regional Transfer limit variation - Directlink - NSW Region

AEMO ELECTRICITY MARKET NOTICE

Inter-Regional Transfer limit variation - Directlink - NSW Region

There has been an unplanned outage of the No 3 cable of Directlink.

The following constraint set was invoked at 1640 hrs 24/03/2024

N-MBTE_1

The constraint set contains the following interconnector on the left hand side.

N-Q-MNSP1

Refer AEMO Network Outage Scheduler (NOS) for further details.

Manager NEM Real Time Operations
115771POWER SYSTEM EVENTS24/03/2024 04:39:39 PM

Update - Non-credible contingency event - SA region - 14/03/2024

AEMO ELECTRICITY MARKET NOTICE.

Update - Non-credible contingency event - SA region - 14/03/2024

Refer AEMO Electricity Market Notice 115624

At 1635 hrs the Tungkillo - Robertstown No. 1 275 kV Line and the Tungkillo East 275 kV Bus was returned to service.

The cause of this non-credible contingency event has been identified and AEMO is satisfied that another occurrence of this event is unlikely under the current circumstances.

AEMO will not reclassify this event as a credible contingency event.

Manager NEM Real Time Operations
115739MARKET SYSTEMS22/03/2024 02:06:15 PM

CHG0086184 | Production | NSW Internet Router Refresh

Change Number: CHG0086184
Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: Local Area Network
Change Title: NSW Internet Router Refresh
Change Start Date & Time: 06/04/2024 09:00:45 AEST
Change End Date & Time: 06/04/2024 14:00:45 AEST
Outage Start Date & Time: 06/04/2024 09:30:00 AEST
Outage End Date & Time: 06/04/2024 13:30:00 AEST
Environment: Production
Participant Impact and Requirements: The following impacts are expected to participant connectivity during this planned outage:

IPWAN Participants - Nil

Lan-2-Lan VPN Participants (IPSEC) - Up to 2 hour outage for participants who have established their VPN connection/s via the AEMO NSW datacenter termination point (202.44.78.10) only - All L2L connections should be established to both QLD / NSW.

Note: Participants are encouraged to ensure their VPN connections are already established or are configured (as per AEMO best practice) to automatically failover to the alternate AEMO QLD datacenter termination point (202.44.76.10) prior to this scheduled outage.

B2B VPN - Up to 2 hour outage to TNSPs with B2B VPN to AEMO NSW Datacentre if VPN connection is only terminating in NSW only

SSL VPN Participants: None expected as DNS entry will be updated to remove NSW IP.

GASHUB: No impact is expected as GASHUB is currently operating out of BNE Datacenter.

Other Impacts will have been communicated in advance.
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?id=pp_services_status for any
planned/unplanned maintenance activities .
115735MARKET SYSTEMS22/03/2024 09:46:07 AM

CHG0087317 | Pre-Production | Pre-Prod BAU Retail November Maintenance Release

Change Number: CHG0087317
Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: MDM - Meter Data Management
Change Title: Pre-Prod BAU Retail November Maintenance Release
Change Start Date & Time: 26/03/2024 12:00:00 AEST
Change End Date & Time: 26/03/2024 17:00:00 AEST
Outage Start Date & Time: 26/03/2024 12:00:00 AEST
Outage End Date & Time: 26/03/2024 14:00:00 AEST
Environment: Pre-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.

CDR and CDP 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?id=pp_services_status for any
planned/unplanned maintenance activities .
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