Market Notices

Change Number: CHG0085737
Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: Electricity Market Management System
Change Title: Pre-production EMMS database refresh
Change Start Date & Time: 26/02/2024 08:00:00 AEST
Change End Date & Time: 17/03/2024 17:30:00 AEST
Outage Start Date & Time: 04/03/2024 08:00:00 AEST
Outage End Date & Time: 08/03/2024 19:00:00 AEST
Environment: Pre-Production
Participant Impact and Requirements: The pre-production EMMS environment will be refreshed with production data (NEM, WARE, SETTLEMENTS & GSH databases).
The Electricity Market Management System (EMMS) and Gas Supply Hub (GSH) Pre-Production environment will be unavailable during the outage window.

Upon completion of the outage users will be required to log in to the GSH Trayport application using their Production credentials.Trayport passwords in Pre-Production environment will be replaced with their Production passwords
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

Possible intervention to manage power system security in SA Region

The synchronous generating units currently expected to be synchronised in SA from 0030 hrs 23/02/2024 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

AEMO ELECTRICITY MARKET NOTICE.

Direction - SA region 21/02/2024

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 21/02/2024.

Intervention pricing does not apply to this AEMO intervention event.

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 114916

The synchronous generating units currently expected to be synchronised in SA from 0700 hrs 22/02/2024 will be inadequate to maintain a secure operating state in SA .

AEMO estimates that, in the absence of sufficient market response by 1630 hrs 21/02/2024, 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

Possible intervention to manage power system security in SA Region

The synchronous generating units currently expected to be synchronised in SA from 0800 hrs 22/02/2024 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

AEMO ELECTRICITY MARKET NOTICE

Refer to market notice 110677

AEMO and Powerlink are continuing to investigate system strength requirements in North Queensland.
Due to commissioning of new feeder 8905 (H13 Ross - H39 Woree) 275kV line in Far North Queensland, the system normal system strength equations for low North Queensland demands and all Karreya stations out of service conditions have been revised.

A revision to the constraint equations will be implemented at 1400 hrs on Tuesday 20th February 2024.

The new system strength combinations have now published in a limits advice document on AEMO's website. For more information refer to the new limits advice: https://www.aemo.com.au/energy-systems/electricity/national-electricity-market-nem/system-operations/congestion-information-resource/limits-advice

This advice contains all the combinations for Queensland for system normal cases.

Below constraint equations in the Q-NIL set will be modified:

- Q_NIL_STRGTH_KBWF
- Q_NIL_STRGTH_KBWF_I
- Q_NIL_STRGTH_HAUSF
- Q_NIL_STRGTH_HAUSF_I
- Q_NIL_STRGTH_MEWF
- Q_NIL_STRGTH_MEWF_I

AEMO Operations

AEMO ELECTRICITY MARKET NOTICE

Inter-regional transfer limit variation - Directlink DC2 - NSW region - 19/02/2024


A planned outage of Directlink DC2 in the NSW region was scheduled from 2000 hrs 16/02/2024 to 1701 hrs 20/02/2024.

The outage has been completed and Directlink DC2 returned to service at 1425 hrs 19/02/2024.

The following constraint set(s) revoked at 1425 hrs 19/02/2024
N-MBTE_1

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

Refer to the AEMO Network Outage Scheduler for further information.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Cancellation - AEMO Intervention Event - Intervention trading intervals - Direction SA region 17/02/2024

Refer Market Notice 114835

The AEMO Intervention Event and all associated directions are cancelled from 1530 hrs 18/02/2024

Manager NEM Real Time Operations

Change Number: CHG0083624
Notification issued to: Market Notice

Notification Type: Completed

Change Type: Normal

Service/Component: Gas Hub

Change Title: A production site transfer of the Electricity and Gas B2B Hub will be carried out to facilitate maintenance activities.

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