Market Notices

92882RECLASSIFY CONTINGENCY02/12/2021 03:50:20 PM

Reclassification of a Non-Credible Contingency Event: Sheffield - Wesley Vale 110kV line and Sheffield - Devonport 110kV 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: Sheffield - Wesley Vale 110kV and Sheffield - Devonport 110kV

Duration: 02/12/2021 15:50 until further notice

Constraint set(s) invoked:
NONE

Auto-generated on behalf of Manager NEM Real Time Operations
92881RECLASSIFY CONTINGENCY02/12/2021 03:49:41 PM

Cancellation of a Non-Credible Contingency Event: Hazelwood - Rowville No.1 220kV line and Hazelwood - Rowville No.2 220kV line in VIC1 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: VIC1

Lines: Hazelwood - Rowville No.1 220kV and Hazelwood - Rowville No.2 220kV

Cancellation time: 02/12/2021 15:49

Constraint set(s) revoked:
V-HWRO_R_N-2 Constraint set contains the following interconnector(s) on the left hand side:
NONE


Refer AEMO Electricity Market Notice 92872

Auto-generated on behalf of Manager NEM Real Time Operations
92880RECLASSIFY CONTINGENCY02/12/2021 03:38:00 PM

Reclassification of a Non-Credible Contingency Event: Bayswater - Mt Piper No.5A3 500kV line and Wollar - Mt Piper No.5A5 500kV line in NSW1 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: NSW1

Lines: Bayswater - Mt Piper No.5A3 500kV and Wollar - Mt Piper No.5A5 500kV

Duration: 02/12/2021 15:37 until further notice

Constraint set(s) invoked:
NONE

Auto-generated on behalf of Manager NEM Real Time Operations
92879RECLASSIFY CONTINGENCY02/12/2021 02:57:04 PM

Reclassification of a Non-Credible Contingency Event: Farrell - Sheffield No. 1 and No. 2 220kV lines in TAS 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: Farrell - Sheffield No. 1 and No. 2 220kV lines

Duration: 02/12/2021 14:48 hrs until further notice
Constraint set(s) invoked:

F-T-FASH_N-2
T-FASH_N-2_CP4_S2

Manager NEM Real Time Operations
92878RECLASSIFY CONTINGENCY02/12/2021 02:48:40 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: 02/12/2021 14:48 until further notice

Constraint set(s) invoked:
NONE

Auto-generated on behalf of Manager NEM Real Time Operations
92874RECLASSIFY CONTINGENCY02/12/2021 02:29:13 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: 02/12/2021 14:29 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
92873RECLASSIFY CONTINGENCY02/12/2021 02:20:50 PM

Reclassification of a Non-Credible Contingency Event: Lindisfarne - Mornington No.1 TEE line and Lindisfarne - Mornington No.2 TEE 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: Lindisfarne - Mornington No.1 TEE and Lindisfarne - Mornington No.2 TEE

Duration: 02/12/2021 14:20 until further notice

Constraint set(s) invoked:
NONE

Auto-generated on behalf of Manager NEM Real Time Operations
92872RECLASSIFY CONTINGENCY02/12/2021 01:47:05 PM

Reclassification of a Non-Credible Contingency Event: Hazelwood - Rowville No.1 220kV line and Hazelwood - Rowville No.2 220kV line in VIC1 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: VIC1

Lines: Hazelwood - Rowville No.1 220kV and Hazelwood - Rowville No.2 220kV

Duration: 02/12/2021 13:47 until further notice

Constraint set(s) invoked:
V-HWRO_R_N-2 Constraint set contains the following interconnector(s) on the left hand side:
NONE


Auto-generated on behalf of Manager NEM Real Time Operations
92871SETTLEMENTS RESIDUE02/12/2021 11:40:18 AM

[EventId:202112021140_NRM_NSW1_VIC1_stopped] NEGRES CONSTRAINT NRM_NSW1_VIC1 ceased operating from 02 December 2021 11:40

AEMO ELECTRICITY MARKET NOTICE

Issued by Australian Energy Market Operator Ltd at 1140 hrs on 2 December 2021

CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 2 December 2021.

Refer to market notice: 92865

AEMO has ceased taking action to minimize the further accumulation of negative settlement residues on the NSW to VIC directional interconnector.

The negative residue constraint NRM_NSW1_VIC1 ceased operating at 1140 hrs on 2 December 2021.

This is an AEMO autogenerated Market Notice.
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