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53528POWER SYSTEM EVENTS26/05/2016 04:39:17 PM
Update - Non-credible contingency event - SA region - 26/05/2016
AEMO ELECTRICITY MARKET NOTICE
Update - Non-credible contingency event - SA region - 26/05/2016
Update to Market Notice 53526
At 0851 hrs the South East - Tailem Bend No. 1 275 kV Line and the South East No. 1 275 kV SVC tripped.
At 0930 hrs the South East - Tailem Bend No. 1 275 kV Line was returned to service
At 1617 hrs the South East No. 1 275 kV SVC was returned to service
The following Constraint Sets were revoked at 1630 hrs.
S-SE_VC_1
V-2RP
See the AEMO Network Outage Scheduler (NOS) for further information
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 - 26/05/2016
Update to Market Notice 53526
At 0851 hrs the South East - Tailem Bend No. 1 275 kV Line and the South East No. 1 275 kV SVC tripped.
At 0930 hrs the South East - Tailem Bend No. 1 275 kV Line was returned to service
At 1617 hrs the South East No. 1 275 kV SVC was returned to service
The following Constraint Sets were revoked at 1630 hrs.
S-SE_VC_1
V-2RP
See the AEMO Network Outage Scheduler (NOS) for further information
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
53526POWER SYSTEM EVENTS26/05/2016 09:14:35 AM
Non-credible contingency event - SA region - 26/05/2016
AEMO ELECTRICITY MARKET NOTICE
Non-credible contingency event - SA region - 26/05/2016
At 0851 hrs the South East Tailem Bend No. 1 275 kV Line and the South East No. 1 275 kV 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 - 26/05/2016
At 0851 hrs the South East Tailem Bend No. 1 275 kV Line and the South East No. 1 275 kV 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
53516POWER SYSTEM EVENTS24/05/2016 06:57:10 PM
Update Non-credible contingency event - NSW region - 24 May 2016
AEMO ELECTRICITY MARKET NOTICE
Update Non-credible contingency event - NSW region - 24 May 2016
Refer market notice 53511,53515
At 0950 hrs the Tuggerah 330kV circuit breakers 212A and 2M2A opened simultaneously.
At 1827 hrs the Tuggerah 330kV circuit breakers 212A and 2M2A were 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 - 24 May 2016
Refer market notice 53511,53515
At 0950 hrs the Tuggerah 330kV circuit breakers 212A and 2M2A opened simultaneously.
At 1827 hrs the Tuggerah 330kV circuit breakers 212A and 2M2A were 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
53515POWER SYSTEM EVENTS24/05/2016 03:24:22 PM
Update Non-credible contingency event - NSW region - 24 May 2016
AEMO ELECTRICITY MARKET NOTICE
Update Non-credible contingency event - NSW region - 24 May 2016
Refer market notice 53511
At 0950 hrs the Tuggerah 330kV circuit breakers 212A and 2M2A opened simultaneously.
The cause of this non credible contingency event is not known at this stage.
Refer to AEMO Network Outage Scheduler (NOS) for further details.
Manager NEM Real Time Operations
Update Non-credible contingency event - NSW region - 24 May 2016
Refer market notice 53511
At 0950 hrs the Tuggerah 330kV circuit breakers 212A and 2M2A opened simultaneously.
The cause of this non credible contingency event is not known at this stage.
Refer to AEMO Network Outage Scheduler (NOS) for further details.
Manager NEM Real Time Operations
53511POWER SYSTEM EVENTS24/05/2016 11:16:38 AM
Non-credible contingency event - NSW region - 24 May 2016
AEMO ELECTRICITY MARKET NOTICE
Non-credible contingency event - NSW region - 24 May 2016
At 0950 hrs the Tuggerah 330kV circuit breakers 212A and 2M2A opened simultaneously.
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 - 24 May 2016
At 0950 hrs the Tuggerah 330kV circuit breakers 212A and 2M2A opened simultaneously.
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
53433RECLASSIFY CONTINGENCY19/05/2016 11:10:02 PM
Cancellation of the Reclassification of a Non-Credible Contingency Event: Farrell - John Butters 220 kV Line and the Farrell - Rosebery Tee Queenstown - Newton 110 kV Line in Tasmania due to Lightning.
AEMO ELECTRICITY MARKET NOTICE
Cancellation of the Reclassification of a Non-Credible Contingency Event: Farrell - John Butters 220 kV Line and the Farrell - Rosebery Tee Queenstown - Newton 110 kV Line in Tasmania due to Lightning.
Refer AEMO Electricity Market Notice 53432
There is no longer any lightning activity in the vicinity of the Farrell - John Butters 220 kV Line and the Farrell - Rosebery Tee Queenstown - Newton 110 kV Line.
AEMO has cancelled the reclassification of the simultaneous trip of those circuits as a credible contingency event at 2310 hrs.
Manager NEM Real Time Operations
Cancellation of the Reclassification of a Non-Credible Contingency Event: Farrell - John Butters 220 kV Line and the Farrell - Rosebery Tee Queenstown - Newton 110 kV Line in Tasmania due to Lightning.
Refer AEMO Electricity Market Notice 53432
There is no longer any lightning activity in the vicinity of the Farrell - John Butters 220 kV Line and the Farrell - Rosebery Tee Queenstown - Newton 110 kV Line.
AEMO has cancelled the reclassification of the simultaneous trip of those circuits as a credible contingency event at 2310 hrs.
Manager NEM Real Time Operations
53432RECLASSIFY CONTINGENCY19/05/2016 10:10:05 PM
Reclassification of a Non-Credible Contingency Event: Farrell - John Butters 220 kV Line and the Farrell - Rosebery Tee Queenstown - Newton 110 kV Line in Tasmania due to Lightning.
AEMO ELECTRICITY MARKET NOTICE
Reclassification of a Non-Credible Contingency Event: Farrell - John Butters 220 kV Line and the Farrell - Rosebery Tee Queenstown - Newton 110 kV Line in Tasmania due to Lightning.
Lightning is occurring near the Farrell - John Butters 220 kV Line and the Farrell - Rosebery Tee Queenstown - Newton 110 kV Line.
AEMO considers the simultaneous trip of those circuits to now be more likely.
Therefore AEMO has reclassified this as a credible contingency event from 2210 hrs 19/05/16 until further notice.
Manager NEM Real Time Operations
Reclassification of a Non-Credible Contingency Event: Farrell - John Butters 220 kV Line and the Farrell - Rosebery Tee Queenstown - Newton 110 kV Line in Tasmania due to Lightning.
Lightning is occurring near the Farrell - John Butters 220 kV Line and the Farrell - Rosebery Tee Queenstown - Newton 110 kV Line.
AEMO considers the simultaneous trip of those circuits to now be more likely.
Therefore AEMO has reclassified this as a credible contingency event from 2210 hrs 19/05/16 until further notice.
Manager NEM Real Time Operations
53428RECLASSIFY CONTINGENCY19/05/2016 01:09:10 PM
Cancellation of the Reclassification of a Non-Credible Contingency Event: Farrell - John Butters 220 kV Line and the Farrell - Rosebery Tee Queenstown - Newton 110 kV Line in Tasmania due to Lightning.
AEMO ELECTRICITY MARKET NOTICE
Cancellation of the Reclassification of a Non-Credible Contingency Event: Farrell - John Butters 220 kV Line and the Farrell - Rosebery Tee Queenstown - Newton 110 kV Line in Tasmania due to Lightning.
Refer AEMO Electricity Market Notice 53427
There is no longer any lightning activity in the vicinity of the Farrell - John Butters 220 kV Line and the Farrell - Rosebery Tee Queenstown - Newton 110 kV Line.
AEMO has cancelled the reclassification of the simultaneous trip of those circuits as a credible contingency event at 1255hrs.
Manager NEM Real Time Operations
Cancellation of the Reclassification of a Non-Credible Contingency Event: Farrell - John Butters 220 kV Line and the Farrell - Rosebery Tee Queenstown - Newton 110 kV Line in Tasmania due to Lightning.
Refer AEMO Electricity Market Notice 53427
There is no longer any lightning activity in the vicinity of the Farrell - John Butters 220 kV Line and the Farrell - Rosebery Tee Queenstown - Newton 110 kV Line.
AEMO has cancelled the reclassification of the simultaneous trip of those circuits as a credible contingency event at 1255hrs.
Manager NEM Real Time Operations
53427RECLASSIFY CONTINGENCY19/05/2016 12:12:25 PM
Reclassification of a Non-Credible Contingency Event: Farrell - John Butters 220 kV Line and the Farrell - Rosebery Tee Queenstown - Newton 110 kV Line in Tasmania due to Lightning.
AEMO ELECTRICITY MARKET NOTICE
Reclassification of a Non-Credible Contingency Event: Farrell - John Butters 220 kV Line and the Farrell - Rosebery Tee Queenstown - Newton 110 kV Line in Tasmania due to Lightning.
Lightning is occurring near the Farrell - John Butters 220 kV Line and the Farrell - Rosebery Tee Queenstown - Newton 110 kV Line.
AEMO considers the simultaneous trip of those circuits to now be more likely.
Therefore AEMO has reclassified this as a credible contingency event from 1210 hrs 19 MAY 2016 until further notice.
Manager NEM Real Time Operations
Reclassification of a Non-Credible Contingency Event: Farrell - John Butters 220 kV Line and the Farrell - Rosebery Tee Queenstown - Newton 110 kV Line in Tasmania due to Lightning.
Lightning is occurring near the Farrell - John Butters 220 kV Line and the Farrell - Rosebery Tee Queenstown - Newton 110 kV Line.
AEMO considers the simultaneous trip of those circuits to now be more likely.
Therefore AEMO has reclassified this as a credible contingency event from 1210 hrs 19 MAY 2016 until further notice.
Manager NEM Real Time Operations