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62610POWER SYSTEM EVENTS27/04/2018 08:29:41 PM
Non-credible contingency event - SA Region - 27/04/18
AEMO ELECTRICITY MARKET NOTICE
Refer AEMO ELECTRICITY MARKET NOTICE 62595
Non-credible contingency event - SA Region - 27/04/18
At 1836 hrs the South East Substation to Tailem Bend Substation No.1 275 kV Line and the South East Substation No.1 SVC tripped.
The cause of this non credible contingency event has been identified and isolated. 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
Refer AEMO ELECTRICITY MARKET NOTICE 62595
Non-credible contingency event - SA Region - 27/04/18
At 1836 hrs the South East Substation to Tailem Bend Substation No.1 275 kV Line and the South East Substation No.1 SVC tripped.
The cause of this non credible contingency event has been identified and isolated. 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
62595POWER SYSTEM EVENTS27/04/2018 06:48:17 PM
Non-credible contingency event - SA region - 27/04/2018
AEMO ELECTRICITY MARKET NOTICE
Non-credible contingency event - SA region - 26/04/2018
At 1836 hrs the South East Substation to Tailem Bend Substation No.1 275 kV Line and the South East Substation No.1 SVC 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 - SA region - 26/04/2018
At 1836 hrs the South East Substation to Tailem Bend Substation No.1 275 kV Line and the South East Substation No.1 SVC 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
62568POWER SYSTEM EVENTS26/04/2018 03:20:37 PM
Update -Non-credible contingency event - SA region - 26/04/2018
AEMO ELECTRICITY MARKET NOTICE
Update-Non-credible contingency event - SA region - 26/04/2018
Refer AEMO Electricity Market Notice 62496
Both the South East Substation to Tailem Bend Substation No.1 275 kV Line and the South East Substation No.1 SVC have been returned to service.
The following constraint equations were invoked from 1125 hrs to 1510 hrs 26/04/2018.
S-SE_VC1_BC_2CP
S-TBSE_BC_2CP
S-X_BC_CP
Based on information provided by the TNSP AEMO will not be reclassifying this non-credible event as a credible contingency event.
Manager NEM Real Time Operations
Update-Non-credible contingency event - SA region - 26/04/2018
Refer AEMO Electricity Market Notice 62496
Both the South East Substation to Tailem Bend Substation No.1 275 kV Line and the South East Substation No.1 SVC have been returned to service.
The following constraint equations were invoked from 1125 hrs to 1510 hrs 26/04/2018.
S-SE_VC1_BC_2CP
S-TBSE_BC_2CP
S-X_BC_CP
Based on information provided by the TNSP AEMO will not be reclassifying this non-credible event as a credible contingency event.
Manager NEM Real Time Operations
62496POWER SYSTEM EVENTS26/04/2018 11:38:28 AM
Non-credible contingency event - SA region - 26/04/2018
AEMO ELECTRICITY MARKET NOTICE
Non-credible contingency event - SA region - 26/04/2018
At 1114 hrs the South East Substation to Tailem Bend Substation No.1 275 kV Line and the South East Substation No.1 SVC 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 - SA region - 26/04/2018
At 1114 hrs the South East Substation to Tailem Bend Substation No.1 275 kV Line and the South East Substation No.1 SVC 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
62447POWER SYSTEM EVENTS23/04/2018 04:19:22 PM
Non-credible contingency event - Vic and SA region - 23/04/2018
AEMO ELECTRICITY MARKET NOTICE
At 1555 hrs Loy Yang A3 tripped.
At 1556 hrs Pelican Point GT 12 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
At 1555 hrs Loy Yang A3 tripped.
At 1556 hrs Pelican Point GT 12 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
62338POWER SYSTEM EVENTS15/04/2018 03:14:33 PM
Non-credible contingency event - NSW region - 15/04/2018
AEMO ELECTRICITY MARKET NOTICE
Non-credible contingency event - NSW region - 15 Apr 2018
At 1130 hrs the Sydney West SVC and the Liverpool -Sydney South No. 12 330kV line 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 - 15 Apr 2018
At 1130 hrs the Sydney West SVC and the Liverpool -Sydney South No. 12 330kV line 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
62333POWER SYSTEM EVENTS15/04/2018 10:56:15 AM
Non-credible contingency event - NSW region - 15/04/2018
AEMO ELECTRICITY MARKET NOTICE
Non-credible contingency event - NSW region - 15 Apr 2018
At 0938 hrs the Ingleburn - Sydney South No.78 330kV and Kemps Creek - Sydney South No.13 330 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 as bushfire impact and AEMO is satisfied that another occurrence of this event is possible under the current circumstances.
AEMO will reclassify this event as a credible contingency event.
Manager NEM Real Time Operations
Non-credible contingency event - NSW region - 15 Apr 2018
At 0938 hrs the Ingleburn - Sydney South No.78 330kV and Kemps Creek - Sydney South No.13 330 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 as bushfire impact and AEMO is satisfied that another occurrence of this event is possible under the current circumstances.
AEMO will reclassify this event as a credible contingency event.
Manager NEM Real Time Operations
62211POWER SYSTEM EVENTS10/04/2018 05:26:11 PM
Non-credible contingency event - NSW region - 10/04/2018
AEMO ELECTRICITY MARKET NOTICE
Non-credible contingency event - NSW region - 10/04/2018
At 1705 hrs the Lower Tumut - Murray (66) 330 kV Line opened automatically at the Lower Tumut 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 and is still under investigation.
Manager NEM Real Time Operations
Non-credible contingency event - NSW region - 10/04/2018
At 1705 hrs the Lower Tumut - Murray (66) 330 kV Line opened automatically at the Lower Tumut 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 and is still under investigation.
Manager NEM Real Time Operations
62121POWER SYSTEM EVENTS04/04/2018 04:23:42 PM
Update - Non-credible contingency event - Qld region - 04/04/2018
AEMO ELECTRICITY MARKET NOTICE
Update - Non-credible contingency event - Qld region - 04/04/2018
Update to AEMO Electricity Market Notice 62118
At 1615 hrs the H6 Gin Gin - H67 Calliope River No 814 275 kV 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 - 04/04/2018
Update to AEMO Electricity Market Notice 62118
At 1615 hrs the H6 Gin Gin - H67 Calliope River No 814 275 kV 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