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126786CONSTRAINTS29/04/2025 05:43:58 PM
Updated Victorian system normal voltage stability limit for the south-west Victoria
AEMO ELECTRICITY MARKET NOTICE
Refer to Market Notice 101368
AEMO has completed a review of the system normal voltage stability limit in the south-west Victoria as a result of Mortlake terminal station cut-in on the Haunted Gully to Tarrone 500 kV line.
The revised limit is increased by 100 MW on the cut-set from Haunted Gully to Moorabool and Mortlake to Moorabool 500 kV lines for flow towards Moorabool.
Full details on the limits advice are to be published shortly on the AEMO website: https://www.aemo.com.au/energy-systems/electricity/national-electricity-market-nem/system-operations/congestion-information-resource/limits-advice
The revised limit has been implemented at 1201 hrs on Tuesday 29th April 2025, by updating V^^V_NIL_SWVIC.
For further details on this constraint equation please contact terry.liu@aemo.com.au
Terry Liu
AEMO Operations
Refer to Market Notice 101368
AEMO has completed a review of the system normal voltage stability limit in the south-west Victoria as a result of Mortlake terminal station cut-in on the Haunted Gully to Tarrone 500 kV line.
The revised limit is increased by 100 MW on the cut-set from Haunted Gully to Moorabool and Mortlake to Moorabool 500 kV lines for flow towards Moorabool.
Full details on the limits advice are to be published shortly on the AEMO website: https://www.aemo.com.au/energy-systems/electricity/national-electricity-market-nem/system-operations/congestion-information-resource/limits-advice
The revised limit has been implemented at 1201 hrs on Tuesday 29th April 2025, by updating V^^V_NIL_SWVIC.
For further details on this constraint equation please contact terry.liu@aemo.com.au
Terry Liu
AEMO Operations
126771GENERAL NOTICE29/04/2025 08:40:07 PM
Network Augmentation Commissioned - Vic Region - 29/04/2025
AEMO ELECTRICITY MARKET NOTICE
Network Augmentation Commissioned - Vic Region - 29/04/2025
At 2030hrs 29/04/2025, the existing Haunted Gully - Tarrone No1 500 kV transmission line has been cut in at Mortlake Power Station to create the following transmission line sections:
Mortlake PS - Tarrone No.1 500 kV transmission line
Mortlake PS - Haunted Gully No.1 500 kV transmission line
Manager NEM Real Time Operations
Network Augmentation Commissioned - Vic Region - 29/04/2025
At 2030hrs 29/04/2025, the existing Haunted Gully - Tarrone No1 500 kV transmission line has been cut in at Mortlake Power Station to create the following transmission line sections:
Mortlake PS - Tarrone No.1 500 kV transmission line
Mortlake PS - Haunted Gully No.1 500 kV transmission line
Manager NEM Real Time Operations
126722GENERAL NOTICE24/04/2025 03:59:43 PM
Release of QNI limit from NSW to Qld - 29th April 2025
AEMO ELECTRICITY MARKET NOTICE
Refer to market notice 124749.
AEMO, Transgrid, Powerlink have reviewed the test results following the QNI minor testing on 16th February 2025. The next hold point can now be released.
The hold point of 950 MW from NSW to Qld will be implemented as of 1000 hrs 29th April 2025.
Please also refer to the published formal QNI minor testing information at the following link:
https://www.aemo.com.au/consultations/current-and-closed-consultations/qld-to-nsw-interconnector-qni-upgrade
Ben Blake
AEMO Operations
Refer to market notice 124749.
AEMO, Transgrid, Powerlink have reviewed the test results following the QNI minor testing on 16th February 2025. The next hold point can now be released.
The hold point of 950 MW from NSW to Qld will be implemented as of 1000 hrs 29th April 2025.
Please also refer to the published formal QNI minor testing information at the following link:
https://www.aemo.com.au/consultations/current-and-closed-consultations/qld-to-nsw-interconnector-qni-upgrade
Ben Blake
AEMO Operations
126600POWER SYSTEM EVENTS20/04/2025 06:23:59 AM
Update - Non-credible contingency event - NSW region - 19/04/2025
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - NSW region - 19/04/2025
Refer AEMO Electricity Market Notice 126598
At 0617 hrs the Uralla - New England Solar Farm No.1 330/33 kV Transformer and New England No.2 Solar Farm 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 - NSW region - 19/04/2025
Refer AEMO Electricity Market Notice 126598
At 0617 hrs the Uralla - New England Solar Farm No.1 330/33 kV Transformer and New England No.2 Solar Farm 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
126598POWER SYSTEM EVENTS19/04/2025 02:39:05 PM
Non-credible contingency event - NSW region - 19/04/2025
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - NSW region - 19/04/2025
At 1351 hrs the Uralla - New England Solar Farm No.1 330/33 kV Transformer and New England No.2 Solar Farm 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 - NSW region - 19/04/2025
At 1351 hrs the Uralla - New England Solar Farm No.1 330/33 kV Transformer and New England No.2 Solar Farm 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
126580POWER SYSTEM EVENTS17/04/2025 12:38:34 PM
Update - Non-credible contingency event - QLD region - 16/04/2025
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - QLD region - 16/04/2025
Refer AEMO Electricity Market Notice 126579
At 1231 hrs the Greenbank - Molendinar 8825 275kV line 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 - QLD region - 16/04/2025
Refer AEMO Electricity Market Notice 126579
At 1231 hrs the Greenbank - Molendinar 8825 275kV line 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
126579POWER SYSTEM EVENTS16/04/2025 11:10:49 PM
Non-credible contingency event - QLD region - 16/04/2025
AEMO ELECTRICITY MARKET NOTICE.
Refer market notice: 126577
Non-credible contingency event - QLD region - 16/04/2025
At 2110 hrs the Greenbank - Molendinar 8825 275kV line tripped at the Molendinar 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
Refer market notice: 126577
Non-credible contingency event - QLD region - 16/04/2025
At 2110 hrs the Greenbank - Molendinar 8825 275kV line tripped at the Molendinar 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
126545RESERVE NOTICE14/04/2025 05:18:07 PM
PDPASA - Forecast Lack Of Reserve Level 1 (LOR1) in the NSW Region on 14/04/2025
AEMO ELECTRICITY MARKET NOTICE
AEMO declares a Forecast LOR1 condition under clause 4.8.4(b) of the National Electricity Rules for the NSW region for the following Period:
[1.] From 1730 hrs 14/04/2025 to 1800 hrs 14/04/2025.
The forecast capacity reserve requirement is 1537 MW.
The minimum capacity reserve available is 1365 MW.
Manager NEM Real Time Operations
AEMO declares a Forecast LOR1 condition under clause 4.8.4(b) of the National Electricity Rules for the NSW region for the following Period:
[1.] From 1730 hrs 14/04/2025 to 1800 hrs 14/04/2025.
The forecast capacity reserve requirement is 1537 MW.
The minimum capacity reserve available is 1365 MW.
Manager NEM Real Time Operations
126542RESERVE NOTICE14/04/2025 04:06:35 PM
PDPASA - Cancellation of the Forecast Lack Of Reserve Level 1 (LOR1) in the NSW Region on 14/04/2025
AEMO ELECTRICITY MARKET NOTICE
The Forecast LOR1 condition in the NSW region advised in AEMO Electricity Market Notice No. 126538 is cancelled at 1600 hrs 14/04/2025.
Manager NEM Real Time Operations
The Forecast LOR1 condition in the NSW region advised in AEMO Electricity Market Notice No. 126538 is cancelled at 1600 hrs 14/04/2025.
Manager NEM Real Time Operations