Market Notices

112887RECLASSIFY CONTINGENCY29/12/2023 04:16:16 PM

Reclassification of a Non-Credible Contingency Event: Tumoulin - Woree No.877 275 kV line and Chalumbin - Turkinje No.7166 132 kV line in QLD1 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: QLD1

Lines: Tumoulin - Woree No.877 275 kV and Chalumbin - Turkinje No.7166 132 kV

Duration: 29/12/2023 16:16 until further notice

Constraint set(s) invoked:
NONE

Auto-generated on behalf of Manager NEM Real Time Operations
112886RECLASSIFY CONTINGENCY29/12/2023 04:16:10 PM

Reclassification of a Non-Credible Contingency Event: Chalumbin - Turkinje No.7165 132 kV line and Chalumbin - Turkinje No.7166 132 kV line in QLD1 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: QLD1

Lines: Chalumbin - Turkinje No.7165 132 kV and Chalumbin - Turkinje No.7166 132 kV

Duration: 29/12/2023 16:16 until further notice

Constraint set(s) invoked:
NONE

Auto-generated on behalf of Manager NEM Real Time Operations
112885RECLASSIFY CONTINGENCY29/12/2023 04:14:30 PM

Cancellation of a Non-Credible Contingency Event: Collinsville North - Proserpine No.7125 132 kV line and Collinsville North - Proserpine No.7126 132 kV line in QLD1 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: QLD1

Lines: Collinsville North - Proserpine No.7125 132 kV and Collinsville North - Proserpine No.7126 132 kV

Cancellation time: 29/12/2023 16:14

Constraint set(s) revoked:
NONE

Refer AEMO Electricity Market Notice 112883

Auto-generated on behalf of Manager NEM Real Time Operations
112884RECLASSIFY CONTINGENCY29/12/2023 03:56:13 PM

Cancellation of the Reclassification of a Non-Credible Contingency Event: H14 Middle Ridge No. 2 and No. 3 275/110 kV transformers ¿ Qld Region

Cancellation of the reclassification of a Non-Credible Contingency Event as a Credible Contingency Event. AEMO considers the simultaneous trip of the following elements is no longer reasonably possible. Accordingly its classification has reverted to a non-credible contingency event.

Region: QLD1
Elements: H14 Middle Ridge No. 2 and No. 3 275/110 kV transformers
Cancellation time: 29/12/2023 16:00
Constraint set(s) revoked: Q-MR_TX2_3_N-2
Refer AEMO Electricity Market Notice 112602

Manager NEM Real Time Operations
112883RECLASSIFY CONTINGENCY29/12/2023 03:11:35 PM

Reclassification of a Non-Credible Contingency Event: Collinsville North - Proserpine No.7125 132 kV line and Collinsville North - Proserpine No.7126 132 kV line in QLD1 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: QLD1

Lines: Collinsville North - Proserpine No.7125 132 kV and Collinsville North - Proserpine No.7126 132 kV

Duration: 29/12/2023 15:11 until further notice

Constraint set(s) invoked:
NONE

Auto-generated on behalf of Manager NEM Real Time Operations
112881RECLASSIFY CONTINGENCY29/12/2023 02:52:08 PM

Reclassification of a Non-Credible Contingency Event: Collinsville - Stoney Creek 7306 132KV LINE line and Collinsville - Newlands 7121 132KV LINE line in QLD1 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: QLD1

Lines: Collinsville - Stoney Creek 7306 132KV LINE and Collinsville - Newlands 7121 132KV LINE

Duration: 29/12/2023 14:52 until further notice

Constraint set(s) invoked:
NONE

Auto-generated on behalf of Manager NEM Real Time Operations
112861RECLASSIFY CONTINGENCY29/12/2023 04:24:35 AM

Cancellation of a Non-Credible Contingency Event: Tungkillo- Robertstown No.1 and No.2 275kV lines and the Robertstown No.1 and No.2 synchronous condensers in SA region 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: SA1

Elements: Tungkillo- Robertstown No.1 and No.2 275kV lines and the Robertstown No.1 and No.2 synchronous condensers

Cancellation time: 29/12/2023 04:15

Constraint set(s) revoked: S-RBTU+SCON_N-2

Constraint set contains the following interconnector(s) on the left hand side:
V-S-MNSP1


Refer AEMO Electricity Market Notice 112838

Manager NEM Real Time Operations
112860INTER-REGIONAL TRANSFER29/12/2023 04:03:53 AM

Inter-regional transfer limit variation - Para No.1 and No.2 275 kV SVC - SA region - 29/12/2023

AEMO ELECTRICITY MARKET NOTICE

Inter-regional transfer limit variation -Para No.1 and No.2 275 kV SVC - SA region - 29/12/2023

At 0355 hrs 29/12/2023 there was a short notice outage of Para No.1 and No.2 275 kV SVC.

The following constraint set(s) invoked at 0355 hrs 29/12/2023
S-X_PA_VC_2

This constraint set(s) contains equations with the following interconnectors on the LHS.
V-SA,V-S-MNSP1


Refer to the AEMO Network Outage Scheduler for further information.

Manager NEM Real Time Operations
112859INTER-REGIONAL TRANSFER29/12/2023 01:58:35 AM

Inter-regional transfer limit variation - Para No.1 275 kV SVC - SA region - 29/12/2023

AEMO ELECTRICITY MARKET NOTICE

Inter-regional transfer limit variation -Para No.1 275 kV SV - SA region - 29/12/2023

At 0145 hrs 29/12/2023 there was a short notice outage of Para No.1 275 kV SVC.

The following constraint set(s) invoked at 0145 hrs 29/12/2023
S-PA_VC1

This constraint set(s) contains equations with the following interconnectors on the LHS.
V-SA,V-S-MNSP1


Refer to the AEMO Network Outage Scheduler for further information.

Manager NEM Real Time Operations
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