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61096POWER SYSTEM EVENTS03/02/2018 07:47:08 PM
Non-credible Contingency Event - Qld region - 03/02/2018
AEMO ELECTRICITY MARKET NOTICE
Non-credible Contingency Event - Qld region - 03/02/2018
At 1841 hrs the Dysart- Moranbah tee Peak Downs 7124 132 kV line tripped and Moranbah - Eagle Downs 7382 132 kV line tripped at Moranbah end only. Lines have been returned to service.
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 confirmed at this stage however lightning storm was observed in the vicinity.
Manager NEM Real Time Operations
Non-credible Contingency Event - Qld region - 03/02/2018
At 1841 hrs the Dysart- Moranbah tee Peak Downs 7124 132 kV line tripped and Moranbah - Eagle Downs 7382 132 kV line tripped at Moranbah end only. Lines have been returned to service.
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 confirmed at this stage however lightning storm was observed in the vicinity.
Manager NEM Real Time Operations
61057POWER SYSTEM EVENTS31/01/2018 03:43:02 PM
Non-credible contingency event - Vic region - 31 January 2018
AEMO ELECTRICITY MARKET NOTICE
Non-credible contingency event - Vic region - 31 January 2018
At 1530 hrs at the South Morang terminal station Sydenham No1 and Sydenham No2 500kV line circuit breakers 2 opened, offloading the Sydenham No1 and Sydenham No2 500kV lines.
Both line were returned to service at 1531 hrs.
The cause of this non credible contingency event has been identified and is unlikely to happen again.
Manager NEM Real Time Operations
Non-credible contingency event - Vic region - 31 January 2018
At 1530 hrs at the South Morang terminal station Sydenham No1 and Sydenham No2 500kV line circuit breakers 2 opened, offloading the Sydenham No1 and Sydenham No2 500kV lines.
Both line were returned to service at 1531 hrs.
The cause of this non credible contingency event has been identified and is unlikely to happen again.
Manager NEM Real Time Operations
61051POWER SYSTEM EVENTS31/01/2018 06:35:23 AM
Non-credible contingency event - NSW region - 31 January 2018
AEMO ELECTRICITY MARKET NOTICE
Non-credible contingency event - NSW region - 31 January 2018
At 0539 hrs at the Eraring substation 330kV circuit breakers 242, 5012 and 5212 opened, offloading the Vales Point 330kV line and the 1A/1B 330/23 kV transformer.
The cause of this non credible contingency event is being investigated.
Manager NEM Real Time Operations
Non-credible contingency event - NSW region - 31 January 2018
At 0539 hrs at the Eraring substation 330kV circuit breakers 242, 5012 and 5212 opened, offloading the Vales Point 330kV line and the 1A/1B 330/23 kV transformer.
The cause of this non credible contingency event is being investigated.
Manager NEM Real Time Operations
60803POWER SYSTEM EVENTS18/01/2018 07:20:43 PM
Update - Non-credible contingency event - VIC region - Thursday, 18 January 2018
AEMO ELECTRICITY MARKET NOTICE
Update - Non-credible contingency event - VIC region - Thursday, 18 January 2018
Refer to MN 60797
At 1519 hrs the following Transmission equipment tripped in the Victoria region.
Rowville No2 500 kV Busbar
Rowville No2 500 /220 kV Transformer
Rowville - South Morang No3 500 kV line opened at South Morang
The last of the plant was returned to service by 1836 hrs
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.
AEMO will not reclassify this event as a credible contingency event.
Manager NEM Real Time Operations
Update - Non-credible contingency event - VIC region - Thursday, 18 January 2018
Refer to MN 60797
At 1519 hrs the following Transmission equipment tripped in the Victoria region.
Rowville No2 500 kV Busbar
Rowville No2 500 /220 kV Transformer
Rowville - South Morang No3 500 kV line opened at South Morang
The last of the plant was returned to service by 1836 hrs
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.
AEMO will not reclassify this event as a credible contingency event.
Manager NEM Real Time Operations
60797POWER SYSTEM EVENTS18/01/2018 04:20:28 PM
Non-credible contingency event - VIC region - Thursday, 18 January 2018
AEMO ELECTRICITY MARKET NOTICE
Non-credible contingency event - VIC region - Thursday, 18 January 2018
At 1519 hrs the following Transmission equipment tripped in the Victoria region.
Rowville No2 500 kV Busbar
Rowville No2 500 /220 kV Transformer
Rowville - South Morang No3 500 kV line opened at South Morang
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 - VIC region - Thursday, 18 January 2018
At 1519 hrs the following Transmission equipment tripped in the Victoria region.
Rowville No2 500 kV Busbar
Rowville No2 500 /220 kV Transformer
Rowville - South Morang No3 500 kV line opened at South Morang
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
60771POWER SYSTEM EVENTS17/01/2018 10:02:59 AM
Non-credible contingency event - SA region - 17 Jan 2018
AEMO ELECTRICITY MARKET NOTICE
Non-credible contingency event - SA region - 17 Jan 2018
At 0940 hrs the Davenport 275 kV CB6592 opened automatically during a planned outage of 275 kV CB6591. This offloaded the Davenport - Brinkworth 275 kV Line.
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.
AEMO will not reclassify this event as a credible contingency event.
Line restored at 0948 hrs.
Manager NEM Real Time Operations
Non-credible contingency event - SA region - 17 Jan 2018
At 0940 hrs the Davenport 275 kV CB6592 opened automatically during a planned outage of 275 kV CB6591. This offloaded the Davenport - Brinkworth 275 kV Line.
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.
AEMO will not reclassify this event as a credible contingency event.
Line restored at 0948 hrs.
Manager NEM Real Time Operations
60637POWER SYSTEM EVENTS08/01/2018 11:37:27 AM
Update- Non-credible contingency event - SA region - Monday, 8 January 2018
AEMO ELECTRICITY MARKET NOTICE
Update- Non-credible contingency event - SA region - Monday, 8 January 2018
Refer AEMO Electricity Market Notice No. 60635
At 1015 hrs the Torrens Island B to Cherry Gardens 275 kV Transmission line opened at the Torrens Island B end only.
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 - Monday, 8 January 2018
Refer AEMO Electricity Market Notice No. 60635
At 1015 hrs the Torrens Island B to Cherry Gardens 275 kV Transmission line opened at the Torrens Island B end only.
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
60635POWER SYSTEM EVENTS08/01/2018 10:40:54 AM
Non-credible contingency event - SA region - Monday, 8 January 2018
AEMO ELECTRICITY MARKET NOTICE
Non-credible contingency event - SA region - Monday, 8 January 2018
At 1015 hrs the Torrens Island B to Cherry Gardens 275 kV Transmission line opened at the Torrens Island B end only.
The cause of this non credible contingency event is being investigated.
Manager NEM Real Time Operations
Non-credible contingency event - SA region - Monday, 8 January 2018
At 1015 hrs the Torrens Island B to Cherry Gardens 275 kV Transmission line opened at the Torrens Island B end only.
The cause of this non credible contingency event is being investigated.
Manager NEM Real Time Operations
60586POWER SYSTEM EVENTS04/01/2018 05:07:01 PM
Non-credible contingency event - QLD region - 4/01/18
AEMO ELECTRICITY MARKET NOTICE
Non-credible contingency event - QLD region - 4/01/18
At 1619 hrs the Tarong - Chinchilla No. 7168 132 kV Line tripped at the Tarong 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 - QLD region - 4/01/18
At 1619 hrs the Tarong - Chinchilla No. 7168 132 kV Line tripped at the Tarong 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