Market Notices

Market Notice

Change Number: CHG0059787

Notification issued to: Market Notice

Notification Type: Initial

Change Type: Normal

Service/ Component: Local Area Network

Change Title: Norwest MarketNet F5 LTM : Scheduled Maintenance for VM upgrade / tuning and Software Upgrade

Change Start Date & Time: 07/07/2020 09:00:00 AEST

Change End Date & Time: 07/07/2020 17:00:00 AEST

Outage Start Date & Time:

Outage End Date & Time:

Change Description:

Planned maintenance affecting the AEMO Market Network.

Environment: Production

Participant Impact and Requirements:

Planned maintenance will be conducted on core network infrastructure within the AEMO Market Network in Norwest.

No outage or impact is expected, however AEMO recommends that all market participants with site to site VPN connections currently connected via Brisbane to switch these connections to the Sydney site as a precaution.

Participants connecting via IPWAN and/or SSL VPN will be automatically connected to the Sydney site and do not need to take any action.

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

AEMO ELECTRICITY MARKET NOTICE

Possible intervention to manage power system security in South Australia (SA) Region

The synchronous generating units expected to be synchronised in SA from 0030 hrs 02/07/2020 to 0630 hrs 02/07/2020 in Pre-dispatch published at 1430 hrs 01/07/2020 are inadequate to maintain sufficient system strength in SA and hence a secure operating state.

AEMO currently estimates that, in the absence of sufficient market response by 1630 hrs 01/07/2020, 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

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

Duration: 1200 hrs 01/07/20 until further notice

Constraint set(s) invoked: Nil

Manager NEM Real Time Operations

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: 1200 hrs 01/07/2020 until further notice

Constraint set(s) invoked: Nil

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

NON-CONFORMANCE SA1 Region Wednesday, 1 July 2020

AEMO declared a schedule generating unit non-conforming

Unit: BNGSF2
Duration: 01/07/2020 09:20 to 01/07/2020 09:55
Amount: 37 MW
Constraint: NC-S_BNGSF2

Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

NON-CONFORMANCE SA1 Region Wednesday, 1 July 2020

AEMO declared a schedule generating unit non-conforming

Unit: BNGSF1
Duration: 01/07/2020 09:30 to 01/07/2020 09:55
Amount: 69 MW
Constraint: NC-S_BNGSF1

Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE.

Direction - SA region - 01/07/2020

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 dispatch intervals during the event to be intervention dispatch intervals, commencing from the interval ending 0905 hrs on 01/ 07/ 2020.

Intervention pricing does not apply to this AEMO intervention event.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Possible intervention to manage power system security in South Australia (SA) Region

The synchronous generating units expected to be synchronised in SA from 1030 hrs 01/07/2020 to 1630 hrs 01/07/2020 in Pre-dispatch published at 0700 hrs 01/07/2020 are inadequate to maintain sufficient system strength in SA and hence a secure operating state.

AEMO currently estimates that, in the absence of sufficient market response by 0900 hrs 01/07/2020, 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

MARKET NOTICE

Change Number: CHG0059808

Notification issued to: Market Notice

Notification Type: Completed

Change Type: Normal

Service/ Component: DWGM - Market Information Bulletin Board

Change Title: Declared Wholesale Gas Market (DWGM) Site transfer from NSW to QLD

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