Market Notices

AEMO ELECTRICITY MARKET NOTICE

SERVICE RESUMPTION - AEMO NEM Control Rooms BT Phones

Refer AEMO Electricity Market Notice 116127

AEMO advises participants that the service interruption relating to: AEMO NEM Control Rooms BT Phones has been resolved.
Participants may resume using the standard AEMO contact numbers.

Participants experiencing any further service issues should contact the AEMO Support Hub
Phone: 1300236600 Opt1
Email: supporthub@aemo.com.au

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

SERVICE INTERRUPTION - AEMO NEM Control Rooms BT Phones

AEMO is experiencing a service interruption relating to: NEM Control Room Primary BT Phone services

Primary phone communication in and out of the NEM Control Rooms are currently unavailable.

AEMO is working on restoring the service. AEMO Support Hub will provide updates as more information becomes available.

Participants are requested to contact the AEMO Electricity Control Room via backup means.

For further enquiries please contact the AEMO Support Hub
Phone: 1300236600 Opt1
Email: supporthub@aemo.com.au]

Manager NEM Real Time Operations

Change Number: CHG0088138
Notification issued to: Market Notice
Notification Type: Initial

Change Type: Normal
Service/ Component: Firewall
Change Title: Brisbane MarketNet Firewall Refresh
Change Start Date & Time: 20/04/2024 09:00:00 AEST
Change End Date & Time: 20/04/2024 15:00:00 AEST
Outage Start Date & Time: 20/04/2024 13:30:00 AEST
Outage End Date & Time: 20/04/2024 13:40:00 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 6 hours 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 - Up to 30 minutes outage to TNSPs with B2B VPN to AEMO QLD Datacentre if VPN connection is only terminating in QLD only

SSL VPN Participants: Up to 30 minutes outage to TNSPs with B2B VPN to AEMO QLD Datacentre if VPN connection is only terminating in QLD only

Expecting an impact to the below services for approximately 10 minutes from 13:30 AEST:
RTMS UI
WEMDE UI - General Instance
WASM MPI

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 .

AEMO ELECTRICITY MARKET NOTICE.

Update - Non-credible contingency event - TAS region - 12/04/2024

Refer AEMO Electricity Market Notice 116095

At 1304 hrs the Sheffield - Farrell No.2 220 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

Change Number: CHG0087945
Notification issued to: Market Notice

Notification Type: Completed
Change Type: Normal

Service/Component: EMS NEM - Network Outage Scheduler (NOS)

Change Title: Planned System Maintenance activity.
Support Information: Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600.

AEMO ELECTRICITY MARKET NOTICE.

Non-credible contingency event - TAS region - 12/04/2024

At 1048 hrs the Sheffield - Farrell No.2 220 kV line tripped during restoration due to fault on the line.

AEMO did not instruct load shedding.

AEMO has been advised of disconnection of major industrial load approximately 550 MW.

The cause of this non credible contingency event is not known at this stage.


Manager NEM Real Time Operations

Change Number: CHG0087908
Notification issued to: Market Notice

Notification Type: Completed
Change Type: Normal

Service/Component: MSATS - Consumer Administration and Transfer Solution(CATS)_PreProd

Change Title: Pre-Prod MSATS Lifecycle Maintenance
Support Information: Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600.

AEMO ELECTRICITY MARKET NOTICE.

Update - Non-credible contingency event - QLD region - 10/04/2024

Refer AEMO Electricity Market Notice 116072

At 1540 hrs the Ingham South to Cardwell 132 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

AEMO ELECTRICITY MARKET NOTICE

Following review of the operation of the Very Fast FCAS market, from 1300 hrs AEST on Monday 15 April AEMO will:

Increase the cap on dispatch of Very Fast Raise (R1) Contingency FCAS from 250 MW to 325 MW

Increase the cap on dispatch of Very Fast Lower (L1) Contingency FCAS from 125 MW to 200 MW

No other changes to the dispatch of Very Fast FCAS or FCAS constraint equation changes will be made on this date.

For information on the Fast Frequency Response (FFR) initiative please visit the website at: https://www.aemo.com.au/initiatives/major-programs/fast-frequency-response

Andrew Groom
AEMO Operations