Market Notices

AEMO ELECTRICITY MARKET NOTICE

Direction - SA region 05/07/2024

Refer to Market Notice 117292


In accordance with section 116 of the National Electricity Law, AEMO is issuing a direction to AGL SA Generation Pty Limited. For the purposes of the National Electricity Rules this is a direction under clause 4.8.9(a1)(1).

Direction issued to: AGL SA Generation Pty Limited - TORRB3 TORRENS ISLAN at 1700 hrs 05/07/2024
Type of resource: generating unit
Required actions: remain synchronised and follow dispatch targets at 0100 hrs 06/07/2024
Services provided: Voltage Control
Circumstances necessitating the Direction: Voltage
Circumstances necessitating the Direction additional detail: intervention is required to maintain the power system in a secure operating state
Expected duration: 1600 hrs 06/07/2024

AGL SA Generation Pty Limited does not incur any civil monetary liability for a relevant action taken in accordance with this direction unless the action is taken in bad faith.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Update - Foreseeable AEMO intervention in SA region

Refer AEMO Electricity Market Notice 117291

AEMO has identified a foreseeable circumstance that may require an AEMO intervention event in the SA region from 0001 hrs 06/07/2024.

The foreseeable circumstance requiring the need for intervention is Voltage.

AEMO estimates that, in the absence of sufficient market response by 1700 hrs 05/07/2024, AEMO may need to intervene by issuing a direction.

Manager NEM Real Time Operations

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 0001 hrs 06/07/2024.

The foreseeable circumstance requiring the need for intervention is Voltage.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Cancellation - Possible intervention to manage power system security in SA region 05/07/2024

Refer Market Notice 117281

AEMO no longer foresees a possible requirement for intervention to manage power system security in SA region. The advice of possible intervention is cancelled from 0845 hrs 04/07/2024.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Update - Possible intervention to manage power system security in SA region

Refer AEMO Electricity Market Notice 117278

The synchronous generating units currently expected to be synchronised in SA from 0000 hrs 05/07/2024 will be inadequate to maintain a secure operating state in SA .

AEMO estimates that, in the absence of sufficient market response by 1300 hrs 04/07/2024, 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

AEMO ELECTRICITY MARKET NOTICE

Cancellation of Reclassification of a Non-Credible Contingency Event: South East No.1 SVC and No.2 SVC - SA region - 13/10/2023.

Refer AEMO Electricity Market Notice 110252

Based on advice from the participant, AEMO considers the trip of the following circuit at South East is unlikely to re-occur. Accordingly, its classification has reverted to a non-credible contingency event.

Region: SA

Equipment: South East No.1 SVC and No.2 SVC

Cancellation time: 1515 hrs 03/07/2024

Constraint set(s) revoked: Nil


Manager NEM Real Time Operations

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 0000 hrs 05/07/2024 will be inadequate to maintain sufficient system strength in SA and hence a secure operating state.
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

Change Number: CHG0090790

Notification issued to: Market Notice

Notification Type: Completed

Change Type: Normal

Service/Component: Gas FRC - CATS

Change Title: Maintenance activities to be performed on the Gas Short Term Trading Market Systems Production.

Support Information: Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600.

Change Number: CHG0090718

Notification issued to: Market Notice

Notification Type: Initial

Change Type: Normal

Service/ Component: Market Network

Change Title: QLD Marketnet Router Replacement

Change Start Date & Time: 10/08/2024 13:00:24 AEST

Change End Date & Time: 10/08/2024 17:00:24 AEST

Outage Start Date & Time:

Outage End Date & Time:

Environment: Production

Participant Impact and Requirements: The following impacts are expected to participant connectivity during this planned outage:

IPWAN Participants - A brief interuption of up to 60 seconds while services are failover from QLD to NSW Datacenter.

Lan-2-Lan VPN Participants (IPSEC) - Up to 2 hour outage for participants who have established their VPN connection/s via the AEMO QLD datacenter termination point (202.44.76.10) 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 NSW datacenter termination point (202.44.78.10) prior to this scheduled outage.

B2B VPN - No impact is expected.

SSL VPN Participants: None expected as SSL VPN's are hosted on a different device.

GASHUB: No impact is expected as GASHUB will be failed over to the NSW 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.