Market Notices

73057POWER SYSTEM EVENTS27/01/2020 05:49:55 PM

Non-credible contingency event - NSW region - 27/01/2020

AEMO ELECTRICITY MARKET NOTICE.

Non-credible contingency event - NSW region - 27/01/2020

At 1738 hrs the Kemps Creek A 330 kV Busbar 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




73008POWER SYSTEM EVENTS25/01/2020 02:52:49 PM

Non-credible contingency event - NSW region - 25/01/2020

AEMO ELECTRICITY MARKET NOTICE.

Non-credible contingency event - NSW region - 25/01/2020

At 1348 hrs the Lismore - Mullumbimby Tee Dunoon 9U6 and 9U7 132 kV Lines and Directlink tripped.

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

AEMO is not satisfied that this non credible event is unlikely to re-occur.

AEMO has therefore reclassified this event as a credible contingency event until further notice.

Manager NEM Real Time Operations




72995POWER SYSTEM EVENTS25/01/2020 03:12:07 AM

Update - Non-credible contingency event - Qld region -25 January 2020

AEMO ELECTRICITY MARKET NOTICE

Update - Non-credible contingency event - Qld region - 25 January 2020

Refer AEMO ELECTRICITY MARKET NOTICE 72991 and 72989

At 0020 hrs in Far North Qld the Chalumbin - Ross (857) 275 kV line and the Chalumbin - Ross (858) 275 kV line opened and auto reclosed due to lightning.

The Edmonton - Innisfail (7139) 132kV line and the Tully - Woree (7301) 132 kV line opened and auto reclosed by design
The Mt Emerald - Walkamin (8903) 275 kV line opened by design.

The cause of this non credible contingency event has been identified as lightning
AEMO is not satisfied that this non credible event is unlikely to re-occur.
AEMO has therefore reclassified the trip of Chalumbin - Ross (857) 275 kV line and the Chalumbin - Ross (858) 275 kV line event as a credible contingency event due to lightning.

Manager NEM Real Time Operations
72991POWER SYSTEM EVENTS25/01/2020 01:02:44 AM

Non-credible contingency event - Qld region -25 January 2020 - correction

AEMO ELECTRICITY MARKET NOTICE

Non-credible contingency event - Qld region - 25 January 2020

At 0020 hrs in Far North Qld
The Chalumbin - Ross (857) 275 kV line and the Chalumbin - Ross (858) 275 kV line opened and auto reclosed.
The Edmonton - Innisfail (7139) 132kV line and the Tully - Woree (7301) 132 kV line opened and auto reclosed.
The Mt Emerald - Walkamin (8903) 275 kV line opened.
Kareeya PS tripped from 5 MW.
In Far North Qld 214 MW of load was interrupted during the auto reclose operation.

The cause of this non credible contingency event is not known at this stage.
AEMO is not satisfied that this non credible event is unlikely to re-occur.
AEMO has therefore reclassified this event as a credible contingency event until further notice.

Manager NEM Real Time Operations
72990POWER SYSTEM EVENTS25/01/2020 12:58:22 AM

Non-credible contingency event - Qld region -25 January 2020

AEMO ELECTRICITY MARKET NOTICE

Non-credible contingency event - Qld region - 25 January 2020

At 0020 hrs in Far North Qld
The Chalumbin - Ross (857) 275 kV line and the Chalumbin - Ross (858) 275 kV line opened and auto reclosed.
The Edmonton - Innisfail (7139) 132kV line and the Tully - Woree (7301) 132 kV line opened and auto reclosed.
The Mt Emerald - Walkamin (8903) 275 kV line opened.
Kareeya PS tripped from 5 MW.
In Far North Qld 214 MW of load was interrupted during the auto reclose operation.

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.

The cause of this non credible contingency event is known at this stage.
AEMO is not satisfied that this non credible event is unlikely to re-occur.
AEMO has therefore reclassified this event as a credible contingency event until further notice.

Manager NEM Real Time Operations
72976POWER SYSTEM EVENTS24/01/2020 04:11:44 PM

Correction -Non-credible contingency event - Qld region - Friday, 24 January 2020

AEMO ELECTRICITY MARKET NOTICE

Non-credible contingency event - Qld region - Friday, 24 January 2020

At 1546 hrs the Nebo - Strathmore 8845 275 kV Line opened at the Strathmore end only.

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
72975POWER SYSTEM EVENTS24/01/2020 04:07:11 PM

Non-credible contingency event - Qld region - Friday, 24 January 2020

AEMO ELECTRICITY MARKET NOTICE

Non-credible contingency event - Qld region - Friday, 24 January 2020

At 1546 hrs the Nebo - Strathmore 275 kV Line opened at the Strathmore end only.

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
72753POWER SYSTEM EVENTS20/01/2020 08:56:39 AM

Update - Non-credible contingency event - SA region - 20/01/2020

AEMO ELECTRICITY MARKET NOTICE.

Update - Non-credible contingency event - SA region - 20/01/2020

Refer AEMO ELECTRICITY MARKET NOTICE MN 72743

At 0835 hrs the Torrens Island A 275kV West 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
72743POWER SYSTEM EVENTS20/01/2020 12:20:09 AM

Non-credible contingency event - SA region - 20/01/2020

AEMO ELECTRICITY MARKET NOTICE.

Non-credible contingency event - SA region - 20/01/2020

At 0004 hrs the Torrens Island A 275kV West 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
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