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112579POWER SYSTEM EVENTS21/12/2023 03:12:07 PM
Non-credible contingency event - QLD region - 21/12/2023
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - QLD region - 21/12/2023
At 1424 hrs the H14 Middle Ridge 275 kV circuit breakers 5432 and 5422 tripped. This offloaded the H14 Middle Ridge No.2 and No.3 275/110 kV transformers.
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
Non-credible contingency event - QLD region - 21/12/2023
At 1424 hrs the H14 Middle Ridge 275 kV circuit breakers 5432 and 5422 tripped. This offloaded the H14 Middle Ridge No.2 and No.3 275/110 kV transformers.
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
112516NON-CONFORMANCE19/12/2023 11:10:16 AM
NON-CONFORMANCE Region VIC1 Tuesday, 19 December 2023
AEMO ELECTRICITY MARKET NOTICE
NON-CONFORMANCE VIC1 Region Tuesday, 19 December 2023
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: YWPS2
Duration: 19/12/2023 11:00 to 19/12/2023 11:10
Amount: 19 MW
Constraint: NC-V_YWPS2
Auto-generated on behalf of Manager NEM Real Time Operations
NON-CONFORMANCE VIC1 Region Tuesday, 19 December 2023
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: YWPS2
Duration: 19/12/2023 11:00 to 19/12/2023 11:10
Amount: 19 MW
Constraint: NC-V_YWPS2
Auto-generated on behalf of Manager NEM Real Time Operations
112282NON-CONFORMANCE13/12/2023 11:48:48 PM
NON-CONFORMANCE Region QLD1 Wednesday, 13 December 2023
AEMO ELECTRICITY MARKET NOTICE
NON-CONFORMANCE Region QLD1 Wednesday, 13 December 2023
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: TARONG#4
Duration: 13/12/2023 23:05 to 13/12/2023 23:10
Amount: -20 MW
Constraint: NC-Q_TARONG#4
Manager NEM Real Time Operations
NON-CONFORMANCE Region QLD1 Wednesday, 13 December 2023
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: TARONG#4
Duration: 13/12/2023 23:05 to 13/12/2023 23:10
Amount: -20 MW
Constraint: NC-Q_TARONG#4
Manager NEM Real Time Operations
112247POWER SYSTEM EVENTS13/12/2023 01:43:17 PM
Non-credible contingency event - TAS region - 13/12/2023
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - TAS region - 13/12/2023
At 1324 hrs the Hadspen - Palmerston No.3 & No.4 110 kV lines 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
Non-credible contingency event - TAS region - 13/12/2023
At 1324 hrs the Hadspen - Palmerston No.3 & No.4 110 kV lines 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
112199NON-CONFORMANCE12/12/2023 09:25:17 AM
NON-CONFORMANCE Region SA1 Tuesday, 12 December 2023
AEMO ELECTRICITY MARKET NOTICE
NON-CONFORMANCE SA1 Region Tuesday, 12 December 2023
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: NBHWF1
Duration: 12/12/2023 09:00 to 12/12/2023 09:25
Amount: 17 MW
Constraint: NC-S_NBHWF1
Auto-generated on behalf of Manager NEM Real Time Operations
NON-CONFORMANCE SA1 Region Tuesday, 12 December 2023
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: NBHWF1
Duration: 12/12/2023 09:00 to 12/12/2023 09:25
Amount: 17 MW
Constraint: NC-S_NBHWF1
Auto-generated on behalf of Manager NEM Real Time Operations
112187POWER SYSTEM EVENTS11/12/2023 04:04:48 PM
Update - Non-credible contingency event - SA region - 11/12/2023
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - SA region - 11/12/2023
Refer AEMO Electricity Market Notice 112181
At 1554 hrs the remaining Mintaro - Waterloo 132 kV Line was returned to service.
The following constraint set(s) revoked:
S-X-MNWT+CB
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
Update - Non-credible contingency event - SA region - 11/12/2023
Refer AEMO Electricity Market Notice 112181
At 1554 hrs the remaining Mintaro - Waterloo 132 kV Line was returned to service.
The following constraint set(s) revoked:
S-X-MNWT+CB
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
112173NON-CONFORMANCE11/12/2023 10:35:17 AM
NON-CONFORMANCE Region QLD1 Monday, 11 December 2023
AEMO ELECTRICITY MARKET NOTICE
NON-CONFORMANCE QLD1 Region Monday, 11 December 2023
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: GSTONE5
Duration: 11/12/2023 10:30 to 11/12/2023 10:35
Amount: 15 MW
Constraint: NC-Q_GSTONE5
Auto-generated on behalf of Manager NEM Real Time Operations
NON-CONFORMANCE QLD1 Region Monday, 11 December 2023
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: GSTONE5
Duration: 11/12/2023 10:30 to 11/12/2023 10:35
Amount: 15 MW
Constraint: NC-Q_GSTONE5
Auto-generated on behalf of Manager NEM Real Time Operations
112165POWER SYSTEM EVENTS11/12/2023 06:36:10 AM
Non-credible contingency event - SA region - 11/12/2023
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - SA region - 11/12/2023
At 0444 hrs the Mintaro - Waterloo 132 kV Line tripped and the Clare North - Mintaro 132 kV Line tripped at the Mintaro 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
Non-credible contingency event - SA region - 11/12/2023
At 0444 hrs the Mintaro - Waterloo 132 kV Line tripped and the Clare North - Mintaro 132 kV Line tripped at the Mintaro 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
112140NON-CONFORMANCE09/12/2023 05:56:20 PM
NON-CONFORMANCE Region NSW1 Saturday, 9 December 2023
AEMO ELECTRICITY MARKET NOTICE
NON-CONFORMANCE NSW1 Region Saturday, 9 December 2023
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: BW03
Duration: 09/12/2023 17:50 to 09/12/2023 17:55
Amount: -44 MW
Constraint: NC-N_BW03
Auto-generated on behalf of Manager NEM Real Time Operations
NON-CONFORMANCE NSW1 Region Saturday, 9 December 2023
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: BW03
Duration: 09/12/2023 17:50 to 09/12/2023 17:55
Amount: -44 MW
Constraint: NC-N_BW03
Auto-generated on behalf of Manager NEM Real Time Operations