Market Notices

86144POWER SYSTEM EVENTS28/05/2021 02:07:15 PM

Non-credible contingency event - Qld region - 28/05/2021

AEMO ELECTRICITY MARKET NOTICE.

Non-credible contingency event - Qld region - 28/05/2021

At 1315 hrs the Claire South - Townsville South 7131 132 kV Line tripped at the Townsville South end only.

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
86069POWER SYSTEM EVENTS26/05/2021 09:39:39 AM

Update Significant power system event - 25/05/2021

AEMO ELECTRICITY MARKET NOTICE.

Update Significant power system event - 25/05/2021

Refer AEMO Electricity Market Notices 85928, 85978 and 86042

At 1406 hrs 25/05/2021 a significant power system event occurred.

Description of event - Multiple transmission lines tripped

Transmission element(s) tripped - All 275kV transmission lines out of H24 Calvale

At 1542 hrs 25/05/2021 these transmission elements were returned to service.

At 1604 hrs 25/05/2021 Permission to restore all load was given.

No further updates will be provided .

Normal notifications will now apply.

Manager NEM Real Time Operations
86042POWER SYSTEM EVENTS25/05/2021 07:52:20 PM

Update Significant power system event - 25/05/2021

AEMO ELECTRICITY MARKET NOTICE.

Update Significant power system event - 25/05/2021

Refer AEMO Electricity Market Notices 85928 and 85978

At 1406 hrs 25/05/2021 a significant power system event occurred.

Description of event - Multiple transmission lines tripped

Transmission element(s) tripped - All 275kV transmission lines out of H24 Calvale

At 1542 hrs 25/05/2021 these transmission elements were returned to service.

At 1604 hrs 25/05/2021 Permission to restore all load was given.

All forecast and actual reserve conditions for 25/05/2021 is cancelled.

Updates will be provided as additional information becomes available.

This Market Notice is issued in accordance with NER clause 4.8.3.

Manager NEM Real Time Operations
85978POWER SYSTEM EVENTS25/05/2021 04:16:31 PM

Update Significant power system event - 25/05/2021

AEMO ELECTRICITY MARKET NOTICE.

Update Significant power system event - 25/05/2021

Refer AEMO Electricity Market Notice 85928

At 1406 hrs 25/05/2021 a significant power system event occurred.

Description of event - Multiple transmission lines tripped

Transmission element(s) tripped - All 275kV transmission lines out of H24 Calvale

At 1542 hrs 25/05/2021 these transmission elements were returned to service.

Region Qld

Approximate Load interrupted -
QLD 2300 MW
NSW 40 MW

Permission to restore all load has been given.

Updates will be provided as additional information becomes available.

This Market Notice is issued in accordance with NER clause 4.8.3.

Manager NEM Real Time Operations
85928POWER SYSTEM EVENTS25/05/2021 02:21:13 PM

Significant power system event - 25/05/2021

AEMO ELECTRICITY MARKET NOTICE.

Significant power system event - 25/05/2021

At 1406 hrs 25/05/2021 a significant power system event occurred.

Description of event - Multiple transmission lines tripped

Transmission element(s) tripped - All 275kV transmission lines out of H24 Calvale

Region Qld

Updates will be provided as additional information becomes available.

This Market Notice is issued in accordance with NER clause 4.8.3.

Manager NEM Real Time Operations
85926POWER SYSTEM EVENTS25/05/2021 02:10:44 PM

Non-credible contingency event - Qld region - 25/05/2021

AEMO ELECTRICITY MARKET NOTICE.

Non-credible contingency event - Qld region - 25/05/2021

At 1344 hrs the Callide C Power station generating units C3 and C4 tripped.

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
85791POWER SYSTEM EVENTS22/05/2021 09:10:39 AM

Update - Non-credible contingency event - Vic region - 22/05/2021

AEMO ELECTRICITY MARKET NOTICE.

Update - Non-credible contingency event - Vic region - 22/05/2021

Refer AEMO ELECTRICITY MARKET NOTICE MN85785

At 0902 hrs the Springvale No2 220kV 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
85785POWER SYSTEM EVENTS22/05/2021 07:43:34 AM

Non-credible contingency event - Vic region - 22/05/2021

AEMO ELECTRICITY MARKET NOTICE.

Non-credible contingency event - Vic region - 22/05/2021

At 0728 hrs the Springvale No2 220kV bus tripped.

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
85737POWER SYSTEM EVENTS21/05/2021 10:28:58 AM

Non-credible contingency event - NSW region - 21/05/2021

AEMO ELECTRICITY MARKET NOTICE.

Non-credible contingency event - NSW region - 21/05/2021

At 0955 hrs the Wagga - Gadara No.993 132 kV Line was deloaded. CB 9932 tripped at the Gadara end only .

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
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