Market Notices

118351RECLASSIFY CONTINGENCY21/09/2024 12:14:30 AM

Cancellation of a Non-Credible Contingency Event: Farrell-John Butters line and Farrell-Rosebery-Newton-Queenstown line in TAS1 due to Lightning.

AEMO ELECTRICITY MARKET NOTICE

Cancellation of reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any lightning activity in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.

Region: TAS1

Lines: Farrell-John Butters and Farrell-Rosebery-Newton-Queenstown

Cancellation time: 21/09/2024 00:14

Constraint set(s) revoked:
NONE

Refer AEMO Electricity Market Notice 118345

Auto-generated on behalf of Manager NEM Real Time Operations
     
118350RECLASSIFY CONTINGENCY21/09/2024 12:21:56 AM

Cancellation of Reclassification of a Non-Credible Contingency Event: Gordon - Chapel Street No.1 and No.2 220 kV lines in TAS1 due to Lightning

AEMO ELECTRICITY MARKET NOTICE.
Cancellation of reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning.

AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any lightning activity in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.

Region: TAS

Lines: Gordon - Chapel Street No.1 and No.2 220 kV lines

Cancellation time: 0020 hrs 21/09/2024

Constraint sets revoked: F-T-CSGO and T-CSGO_N-2

Manager NEM Real Time Operations
     
118349RECLASSIFY CONTINGENCY21/09/2024 12:09:32 AM

Cancellation of a Non-Credible Contingency Event: Farrell - Reece No.1 220 kV line and Farrell - Reece No.2 220 kV line in TAS1 due to Lightning.

AEMO ELECTRICITY MARKET NOTICE

Cancellation of reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any lightning activity in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.

Region: TAS1

Lines: Farrell - Reece No.1 220 kV and Farrell - Reece No.2 220 kV

Cancellation time: 21/09/2024 00:09

Constraint set(s) revoked:
F-T-FARE_N-2 Constraint set contains the following interconnector(s) on the left hand side:
T-V-MNSP1


Refer AEMO Electricity Market Notice 118347

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118348MARKET INTERVENTION20/09/2024 11:34:36 PM

Cancellation: Direction issued to: Synergen Power Pty Limited - MINTARO MINTARO GAS

AEMO ELECTRICITY MARKET NOTICE

Cancellation: Direction issued to: Synergen Power Pty Limited - MINTARO MINTARO GAS

Refer to Market Notice 118337

Direction is cancelled from: 2330 hrs 20/09/2024

Manager NEM Real Time Operations
     
118347RECLASSIFY CONTINGENCY20/09/2024 07:07:03 PM

Reclassification of a Non-Credible Contingency Event: Farrell - Reece No.1 220 kV line and Farrell - Reece No.2 220 kV line in TAS1 due to Lightning.

AEMO ELECTRICITY MARKET NOTICE

Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. 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: TAS1

Lines: Farrell - Reece No.1 220 kV and Farrell - Reece No.2 220 kV

Duration: 20/09/2024 19:06 until further notice

Constraint set(s) invoked:
F-T-FARE_N-2 Constraint set contains the following interconnector(s) on the left hand side:
T-V-MNSP1


Auto-generated on behalf of Manager NEM Real Time Operations
     
118345RECLASSIFY CONTINGENCY20/09/2024 06:10:01 PM

Reclassification of a Non-Credible Contingency Event: Farrell-John Butters line and Farrell-Rosebery-Newton-Queenstown line in TAS1 due to Lightning.

AEMO ELECTRICITY MARKET NOTICE

Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. 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: TAS1

Lines: Farrell-John Butters and Farrell-Rosebery-Newton-Queenstown

Duration: 20/09/2024 18:09 until further notice

Constraint set(s) invoked:
NONE

Auto-generated on behalf of Manager NEM Real Time Operations
     
118344RECLASSIFY CONTINGENCY20/09/2024 06:20:05 PM

Reclassification of a Non-Credible Contingency Event: Gordon - Chapel Street No.1 and No.2 220 kV lines in TAS1 due to Lightning

AEMO ELECTRICITY MARKET NOTICE.
Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning.

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: TAS

Lines: Gordon - Chapel Street No.1 and No.2 220 kV lines

Duration: 1745 hrs 20/09/2024 until further notice

Constraint set(s) invoked: F-T-CSGO and T-CSGO_N-2

Manager NEM Real Time Operations
     
118342GENERAL NOTICE20/09/2024 04:43:35 PM

Update - Lightning vulnerable lines in TAS region

AEMO ELECTRICITY MARKET NOTICE.

Update - Lightning vulnerable lines in TAS region

Refer to AEMO Electricity Market Notice 118320 ,118321, 118322

At 1340 hrs 19/09/2024 the Gordon - Chapel St No 1 220 kV line and the Gordon - Chapel St No 2 220 kV line tripped.
The cause of the trip was identified as due to Lightning.

In accordance with SO_OP_3715, AEMO now considers the Gordon - Chapel St No 1 220 kV line and the Gordon - Chapel St No 2 220 kV line to be vulnerable with a category of Vulnerability due to Lightning.

Manager NEM Real Time Operations
     
118341MARKET INTERVENTION20/09/2024 04:30:22 PM

Cancellation: Direction issued to: AGL SA Generation Pty Limited - BARKER INLET PS

AEMO ELECTRICITY MARKET NOTICE

Cancellation: Direction issued to: AGL SA Generation Pty Limited - BARKER INLET PS

Refer to Market Notice 118336

Direction is cancelled from: 1630 hrs 20/09/2024

Manager NEM Real Time Operations
     
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