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124047CONSTRAINTS04/02/2025 09:32:40 AM
Update to system strength requirements in North Queensland
AEMO ELECTRICITY MARKET NOTICE
Refer to market notice 121468
AEMO and Powerlink are continuing to investigate system strength requirements in North Queensland.
The system normal equations have been revised to remove Gladstone >=1 requirement.
A revision to the constraint equations will be implemented at 1200 hrs on Tuesday 4th February 2025.
The new combinations have now published in a limits advice document on AEMO's website. For more information refer to the new limits advice: https://www.aemo.com.au/energy-systems/electricity/national-electricity-market-nem/system-operations/congestion-information-resource/limits-advice
This advice contains all the combinations for Queensland for system normal cases. Additional information has been included in the limit advice to clarify the requirement to disconnect all inverters/turbines under certain system conditions.
The constraint equation in the Q-NIL set of the form below will be modified:
-Q_NIL_STRGTH_xxxx
-Q_NIL_STRGTH_xxxx_I
AEMO Operations
Refer to market notice 121468
AEMO and Powerlink are continuing to investigate system strength requirements in North Queensland.
The system normal equations have been revised to remove Gladstone >=1 requirement.
A revision to the constraint equations will be implemented at 1200 hrs on Tuesday 4th February 2025.
The new combinations have now published in a limits advice document on AEMO's website. For more information refer to the new limits advice: https://www.aemo.com.au/energy-systems/electricity/national-electricity-market-nem/system-operations/congestion-information-resource/limits-advice
This advice contains all the combinations for Queensland for system normal cases. Additional information has been included in the limit advice to clarify the requirement to disconnect all inverters/turbines under certain system conditions.
The constraint equation in the Q-NIL set of the form below will be modified:
-Q_NIL_STRGTH_xxxx
-Q_NIL_STRGTH_xxxx_I
AEMO Operations
124044POWER SYSTEM EVENTS03/02/2025 02:13:15 PM
Update - Non-credible contingency event - TAS region - 03/02/2025
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - TAS region - 03/02/2025
Refer AEMO Electricity Market Notice 124043
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.
Region: TAS
Elements: Farrell - Reece No.1 and No.2 220 kV lines
Duration: 1410 hrs 03/02/2025 until further notice
Constraint set(s) invoked: F-T-FARE_N-2
Manager NEM Real Time Operations
Update - Non-credible contingency event - TAS region - 03/02/2025
Refer AEMO Electricity Market Notice 124043
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.
Region: TAS
Elements: Farrell - Reece No.1 and No.2 220 kV lines
Duration: 1410 hrs 03/02/2025 until further notice
Constraint set(s) invoked: F-T-FARE_N-2
Manager NEM Real Time Operations
124043POWER SYSTEM EVENTS03/02/2025 02:02:24 PM
Non-credible contingency event - TAS region - 03/02/2025
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - TAS region - 03/02/2025
At 1333 hrs the Farrell - Reece No.1 and No.2 220 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 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 not known at this stage.
Manager NEM Real Time Operations
Non-credible contingency event - TAS region - 03/02/2025
At 1333 hrs the Farrell - Reece No.1 and No.2 220 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 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 not known at this stage.
Manager NEM Real Time Operations
124041NON-CONFORMANCE03/02/2025 10:46:30 AM
NON-CONFORMANCE Region NSW1 Monday, 3 February 2025
AEMO ELECTRICITY MARKET NOTICE
NON-CONFORMANCE NSW1 Region Monday, 3 February 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: WTAHB1
Duration: 03/02/2025 10:35 to 03/02/2025 10:40
Amount: -132 MW
Constraint: NC-N_WTAHB1
Auto-generated on behalf of Manager NEM Real Time Operations
NON-CONFORMANCE NSW1 Region Monday, 3 February 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: WTAHB1
Duration: 03/02/2025 10:35 to 03/02/2025 10:40
Amount: -132 MW
Constraint: NC-N_WTAHB1
Auto-generated on behalf of Manager NEM Real Time Operations
123957NON-CONFORMANCE31/01/2025 11:31:33 AM
NON-CONFORMANCE Region NSW1 Friday, 31 January 2025
AEMO ELECTRICITY MARKET NOTICE
NON-CONFORMANCE NSW1 Region Friday, 31 January 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: WTAHB1
Duration: 31/01/2025 11:05 to 31/01/2025 11:30
Amount: -226 MW
Constraint: NC-N_WTAHB1
Auto-generated on behalf of Manager NEM Real Time Operations
NON-CONFORMANCE NSW1 Region Friday, 31 January 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: WTAHB1
Duration: 31/01/2025 11:05 to 31/01/2025 11:30
Amount: -226 MW
Constraint: NC-N_WTAHB1
Auto-generated on behalf of Manager NEM Real Time Operations
123917NON-CONFORMANCE30/01/2025 06:50:11 AM
NON-CONFORMANCE Region NSW1 Thursday, 30 January 2025
AEMO ELECTRICITY MARKET NOTICE
NON-CONFORMANCE NSW1 Region Thursday, 30 January 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: WTAHB1
Duration: 30/01/2025 06:45 to 30/01/2025 06:50
Amount: -14 MW
Constraint: NC-N_WTAHB1
Auto-generated on behalf of Manager NEM Real Time Operations
NON-CONFORMANCE NSW1 Region Thursday, 30 January 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: WTAHB1
Duration: 30/01/2025 06:45 to 30/01/2025 06:50
Amount: -14 MW
Constraint: NC-N_WTAHB1
Auto-generated on behalf of Manager NEM Real Time Operations
123843NON-CONFORMANCE29/01/2025 08:40:11 AM
NON-CONFORMANCE Region NSW1 Wednesday, 29 January 2025
AEMO ELECTRICITY MARKET NOTICE
NON-CONFORMANCE NSW1 Region Wednesday, 29 January 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: CAPBES1
Duration: 29/01/2025 08:35 to 29/01/2025 08:40
Amount: -100 MW
Constraint: NC-N_CAPBES1
Auto-generated on behalf of Manager NEM Real Time Operations
NON-CONFORMANCE NSW1 Region Wednesday, 29 January 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: CAPBES1
Duration: 29/01/2025 08:35 to 29/01/2025 08:40
Amount: -100 MW
Constraint: NC-N_CAPBES1
Auto-generated on behalf of Manager NEM Real Time Operations
123820NON-CONFORMANCE28/01/2025 06:10:14 PM
NON-CONFORMANCE Region QLD1 Tuesday, 28 January 2025
AEMO ELECTRICITY MARKET NOTICE
NON-CONFORMANCE QLD1 Region Tuesday, 28 January 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: MPP_2
Duration: 28/01/2025 17:55 to 28/01/2025 18:10
Amount: -17 MW
Constraint: NC-Q_MPP_2
Auto-generated on behalf of Manager NEM Real Time Operations
NON-CONFORMANCE QLD1 Region Tuesday, 28 January 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: MPP_2
Duration: 28/01/2025 17:55 to 28/01/2025 18:10
Amount: -17 MW
Constraint: NC-Q_MPP_2
Auto-generated on behalf of Manager NEM Real Time Operations
123768NON-CONFORMANCE27/01/2025 03:45:18 PM
NON-CONFORMANCE Region SA1 Monday, 27 January 2025
AEMO ELECTRICITY MARKET NOTICE
NON-CONFORMANCE SA1 Region Monday, 27 January 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: HPR1
Duration: 27/01/2025 15:40 to 27/01/2025 15:45
Amount: 12 MW
Constraint: NC-S_HPR1
Auto-generated on behalf of Manager NEM Real Time Operations
NON-CONFORMANCE SA1 Region Monday, 27 January 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: HPR1
Duration: 27/01/2025 15:40 to 27/01/2025 15:45
Amount: 12 MW
Constraint: NC-S_HPR1
Auto-generated on behalf of Manager NEM Real Time Operations