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117785MARKET INTERVENTION25/08/2024 01:00:58 PM
Foreseeable AEMO intervention under clause 4.8.5A (a) of the NER in SA region
AEMO ELECTRICITY MARKET NOTICE
Foreseeable AEMO intervention under clause 4.8.5A (a) of the NER in SA region
AEMO has identified a foreseeable circumstance that may require an AEMO intervention event in the SA region from 0400 hrs 26/08/2024.
The foreseeable circumstance requiring the need for intervention is Voltage.
Manager NEM Real Time Operations
Foreseeable AEMO intervention under clause 4.8.5A (a) of the NER in SA region
AEMO has identified a foreseeable circumstance that may require an AEMO intervention event in the SA region from 0400 hrs 26/08/2024.
The foreseeable circumstance requiring the need for intervention is Voltage.
Manager NEM Real Time Operations
117784RECLASSIFY CONTINGENCY25/08/2024 12:53:13 PM
Reclassification of a Non-Credible Contingency Event: Eildon PS - Mt Beauty No.1 220 kV line and Eildon PS - Mt Beauty No.2 220 kV 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: Eildon PS - Mt Beauty No.1 220 kV and Eildon PS - Mt Beauty No.2 220 kV
Duration: 25/08/2024 12:53 until further notice
Constraint set(s) invoked:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations
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: Eildon PS - Mt Beauty No.1 220 kV and Eildon PS - Mt Beauty No.2 220 kV
Duration: 25/08/2024 12:53 until further notice
Constraint set(s) invoked:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations
117783POWER SYSTEM EVENTS25/08/2024 10:33:54 AM
Update - Non-credible contingency event - TAS region - 25/08/2024
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - TAS region - 25/08/2024
Refer AEMO Electricity Market Notice 117782
At 1023 hrs the New Norfolk A 110kV Bus was returned to service.
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 - TAS region - 25/08/2024
Refer AEMO Electricity Market Notice 117782
At 1023 hrs the New Norfolk A 110kV Bus was returned to service.
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
117782POWER SYSTEM EVENTS25/08/2024 09:24:53 AM
Non-credible contingency event - TAS region - 25/08/2024
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - TAS region - 25/08/2024
At 0850 hrs the New Norfolk A 110kV Bus 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 - 25/08/2024
At 0850 hrs the New Norfolk A 110kV Bus 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
117781INTER-REGIONAL TRANSFER25/08/2024 08:10:50 AM
Inter-regional transfer limit variation -Redcliffs No 2 220 kV Bus - VIC region - 25/08/2024
AEMO ELECTRICITY MARKET NOTICE
Inter-regional transfer limit variation -Redcliffs No 2 220 kV Bus - VIC region - 25/08/2024
A planned outage of Redcliffs No 2 220 kV Bus in the VIC region was scheduled from 0630 hrs 25/08/2024 to 1730 hrs 25/08/2024.
The outage has been cancelled at 0805 hrs.
The following constraint set(s) were invoked
Constraint Sets: V-KMRC, V-RCTS220CAPAUTO
This constraint set(s) contains equations with the following interconnectors on the LHS.
V-S-MNSP1,T-V-MNSP1,V-SA,VIC1-NSW1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
Inter-regional transfer limit variation -Redcliffs No 2 220 kV Bus - VIC region - 25/08/2024
A planned outage of Redcliffs No 2 220 kV Bus in the VIC region was scheduled from 0630 hrs 25/08/2024 to 1730 hrs 25/08/2024.
The outage has been cancelled at 0805 hrs.
The following constraint set(s) were invoked
Constraint Sets: V-KMRC, V-RCTS220CAPAUTO
This constraint set(s) contains equations with the following interconnectors on the LHS.
V-S-MNSP1,T-V-MNSP1,V-SA,VIC1-NSW1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
117780MARKET INTERVENTION24/08/2024 04:05:26 PM
Update Direction - AGL SA Generation Pty Limited - TORRB3 TORRENS ISLAN
AEMO ELECTRICITY MARKET NOTICE.
Update Direction - AGL SA Generation Pty Limited - TORRB3 TORRENS ISLAN
Refer AEMO Electricity Market Notice 117763
TORRB3 TORRENS ISLAN at 0400 hrs 25/08/2024 to remain synchronised and follow dispatch targets.
This update is issued at 1600 hrs 24/08/2024 and is expected to stay in place until 0400 hrs 26/08/2024
Manager NEM Real Time Operations
Update Direction - AGL SA Generation Pty Limited - TORRB3 TORRENS ISLAN
Refer AEMO Electricity Market Notice 117763
TORRB3 TORRENS ISLAN at 0400 hrs 25/08/2024 to remain synchronised and follow dispatch targets.
This update is issued at 1600 hrs 24/08/2024 and is expected to stay in place until 0400 hrs 26/08/2024
Manager NEM Real Time Operations
117779MARKET INTERVENTION24/08/2024 03:59:40 PM
Direction - SA region 24/08/2024
AEMO ELECTRICITY MARKET NOTICE
Direction - SA region 24/08/2024
Refer to Market Notice 117756
In accordance with section 116 of the National Electricity Law, AEMO is issuing a direction to Synergen Power Pty Limited. For the purposes of the National Electricity Rules this is a direction under clause 4.8.9(a1)(1).
Direction issued to: Synergen Power Pty Limited - MINTARO MINTARO GAS at 1600 hrs 24/08/2024
Type of resource: generating unit
Required actions: synchronise and follow dispatch targets at 2330 hrs 24/08/2024
Services provided: Voltage Control
Circumstances necessitating the Direction: Voltage
Circumstances necessitating the Direction additional detail: intervention is required to maintain the power system in a secure operating state
Expected duration: 0400 hrs 26/08/2024.
Synergen Power Pty Limited does not incur any civil monetary liability for a relevant action taken in accordance with this direction unless the action is taken in bad faith.
Manager NEM Real Time Operations
Direction - SA region 24/08/2024
Refer to Market Notice 117756
In accordance with section 116 of the National Electricity Law, AEMO is issuing a direction to Synergen Power Pty Limited. For the purposes of the National Electricity Rules this is a direction under clause 4.8.9(a1)(1).
Direction issued to: Synergen Power Pty Limited - MINTARO MINTARO GAS at 1600 hrs 24/08/2024
Type of resource: generating unit
Required actions: synchronise and follow dispatch targets at 2330 hrs 24/08/2024
Services provided: Voltage Control
Circumstances necessitating the Direction: Voltage
Circumstances necessitating the Direction additional detail: intervention is required to maintain the power system in a secure operating state
Expected duration: 0400 hrs 26/08/2024.
Synergen Power Pty Limited does not incur any civil monetary liability for a relevant action taken in accordance with this direction unless the action is taken in bad faith.
Manager NEM Real Time Operations
117778MARKET INTERVENTION24/08/2024 03:30:13 PM
Cancellation: Direction issued to: AGL SA Generation Pty Limited - TORRB2 TORRENS ISLAN
AEMO ELECTRICITY MARKET NOTICE
Cancellation: Direction issued to: AGL SA Generation Pty Limited - TORRB2 TORRENS ISLAN
Refer to Market Notice 117767
Direction is cancelled from: 1530 hrs 24/08/2024
Manager NEM Real Time Operations
Cancellation: Direction issued to: AGL SA Generation Pty Limited - TORRB2 TORRENS ISLAN
Refer to Market Notice 117767
Direction is cancelled from: 1530 hrs 24/08/2024
Manager NEM Real Time Operations
117777RECLASSIFY CONTINGENCY24/08/2024 02:24:16 PM
Cancellation of a Non-Credible Contingency Event: Tungatinah-Lake Echo-Waddamana 1 110kV line and Tungatinah-Waddamana 2 110kV 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: Tungatinah-Lake Echo-Waddamana 1 110kV and Tungatinah-Waddamana 2 110kV
Cancellation time: 24/08/2024 14:24
Constraint set(s) revoked:
T-TUWA12_110_N-2 Constraint set contains the following interconnector(s) on the left hand side:
NONE
Refer AEMO Electricity Market Notice 117776
Auto-generated on behalf of Manager NEM Real Time Operations
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: Tungatinah-Lake Echo-Waddamana 1 110kV and Tungatinah-Waddamana 2 110kV
Cancellation time: 24/08/2024 14:24
Constraint set(s) revoked:
T-TUWA12_110_N-2 Constraint set contains the following interconnector(s) on the left hand side:
NONE
Refer AEMO Electricity Market Notice 117776
Auto-generated on behalf of Manager NEM Real Time Operations