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56324POWER SYSTEM EVENTS18/12/2016 12:25:43 PM
Update - Non-credible contingency event - Queensland region - Saturday, 17 December 2016
AEMO ELECTRICITY MARKET NOTICE
Update - Non-credible contingency event - Queensland region - Saturday, 17 December 2016
Update to market notice 56316
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 - Queensland region - Saturday, 17 December 2016
Update to market notice 56316
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
56316POWER SYSTEM EVENTS17/12/2016 11:14:52 PM
Non-credible contingency event - Queensland region - Saturday, 17 December 2016
AEMO ELECTRICITY MARKET NOTICE
Non-credible contingency event - Queensland region - Saturday, 17 December 2016
Dysart No1 132 kV Busbar tripped at 2223 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 is not known at this stage.
Manager NEM Real Time Operations
Non-credible contingency event - Queensland region - Saturday, 17 December 2016
Dysart No1 132 kV Busbar tripped at 2223 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 is not known at this stage.
Manager NEM Real Time Operations
56169POWER SYSTEM EVENTS05/12/2016 03:04:48 AM
Update: Simultaneous trip of Basslink and Farrell - Shefield No. 1 220 kV line- Tas region
AEMO ELECTRICITY MARKET NOTICE
Update: Simultaneous trip of Basslink and Farrell - Shefield No. 1 220 kV line - Tas region. 05-12-2016
Refer to MN 56165, 56155 and 47855
At 0043 hrs the Basslink and Farrell - Shefield No. 1 220 kV line tripped simultaneously. This simultaneous trip is currently declared a credible contingency event - Refer to MN 47855
Farrell - Sheffield No1 220 kV line returned to service at 0047 hrs
Basslink returned to service at 0245 hrs
Constraint set I-BL_ZERO revoked at 0245 hrs.
The outage constraint set contains the following interconnector onthe left hand side.
T-V_MNSP1
Manager NEM Real Time Operations
Update: Simultaneous trip of Basslink and Farrell - Shefield No. 1 220 kV line - Tas region. 05-12-2016
Refer to MN 56165, 56155 and 47855
At 0043 hrs the Basslink and Farrell - Shefield No. 1 220 kV line tripped simultaneously. This simultaneous trip is currently declared a credible contingency event - Refer to MN 47855
Farrell - Sheffield No1 220 kV line returned to service at 0047 hrs
Basslink returned to service at 0245 hrs
Constraint set I-BL_ZERO revoked at 0245 hrs.
The outage constraint set contains the following interconnector onthe left hand side.
T-V_MNSP1
Manager NEM Real Time Operations
56165POWER SYSTEM EVENTS05/12/2016 02:26:02 AM
Update: Simultaneous trip of Basslink and Farrell - Shefield No. 1 220 kV line- Tas region
AEMO ELECTRICITY MARKET NOTICE
Update: Simultaneous trip of Basslink and Farrell - Shefield No. 1 220 kV line - Tas region. 05-12-2016
Refer to MN 56155 and 47855
At 0043 hrs the Basslink and Farrell - Shefield No. 1 220 kV line tripped simultaneously. This simultaneous trip is currently declared a credible contingency event - Refer to MN 47855
Simultaneously with this event AEMO has observed a reduction in the electrical demand in the TAS region of approximately 390 MW due to SPS action.
AEMO did not instruct load shedding.
Constraint set invoked:
I-BL_ZERO
The outage constraint set contains the following interconnector onthe left hand side.
T-V_MNSP1
Manager NEM Real Time Operations
Update: Simultaneous trip of Basslink and Farrell - Shefield No. 1 220 kV line - Tas region. 05-12-2016
Refer to MN 56155 and 47855
At 0043 hrs the Basslink and Farrell - Shefield No. 1 220 kV line tripped simultaneously. This simultaneous trip is currently declared a credible contingency event - Refer to MN 47855
Simultaneously with this event AEMO has observed a reduction in the electrical demand in the TAS region of approximately 390 MW due to SPS action.
AEMO did not instruct load shedding.
Constraint set invoked:
I-BL_ZERO
The outage constraint set contains the following interconnector onthe left hand side.
T-V_MNSP1
Manager NEM Real Time Operations
56155POWER SYSTEM EVENTS05/12/2016 01:09:49 AM
Non credible contingency: Simultaneous trip of Basslink and Farrell - Shefield No. 1 220 kV line- Tas region
AEMO ELECTRICITY MARKET NOTICE
Non-credible contingency event - Tas region - 05-12-2016
At 0043 hrs the Basslink and Farrell - Shefield No. 1 220 kV line tripped simultaneously.
Simultaneously with this event AEMO has observed a reduction in the electrical demand in the Tas region of approximately 390 MW due to SPS action.
AEMO did not instruct load shedding.
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 - 05-12-2016
At 0043 hrs the Basslink and Farrell - Shefield No. 1 220 kV line tripped simultaneously.
Simultaneously with this event AEMO has observed a reduction in the electrical demand in the Tas region of approximately 390 MW due to SPS action.
AEMO did not instruct load shedding.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
55958POWER SYSTEM EVENTS01/12/2016 12:31:57 AM
AEMO advises that South Australia has seperated from the NEM
AEMO ELECTRICITY MARKET NOTICE
POWER SYSTEM EVENT
At 0016 hrs 1st December 2016 the SA power system seperated from the NEM but remains operating as a separate entity. AEMO are investigating the cause and will develop and implement a reconnection plan as soon as practical.
Manager NEM Real Time Operations
POWER SYSTEM EVENT
At 0016 hrs 1st December 2016 the SA power system seperated from the NEM but remains operating as a separate entity. AEMO are investigating the cause and will develop and implement a reconnection plan as soon as practical.
Manager NEM Real Time Operations
55900POWER SYSTEM EVENTS30/11/2016 01:19:06 AM
Non-credible contingency event - NSW region - 30 Nov 2016
AEMO ELECTRICITY MARKET NOTICE
Non-credible contingency event - NSW region - 30 Nov 2016
At 0039 hrs the Liddell-Tomago No. 82 line tripped at the Tomago 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 - NSW region - 30 Nov 2016
At 0039 hrs the Liddell-Tomago No. 82 line tripped at the Tomago 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
55737POWER SYSTEM EVENTS15/11/2016 01:02:37 AM
Non-credible contingency event - Queensland region - 14 Nov 2016
AEMO ELECTRICITY MARKET NOTICE
Non-credible contingency event - Queensland region - 14 Nov 2016
At 2034 hrs the Innisfail No2 132 kV 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 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
Non-credible contingency event - Queensland region - 14 Nov 2016
At 2034 hrs the Innisfail No2 132 kV 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 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
55629POWER SYSTEM EVENTS10/11/2016 05:26:46 PM
Non-credible contingency event - Vic region - 10/11/16
AEMO ELECTRICITY MARKET NOTICE
Non-credible contingency event - Vic region - 10/11/16
At 0953 hrs the Hazelwood - Loy Yang No. 1 500 kV Line tripped at the Hazelwood end only. The line was placed on load at 0956 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
Non-credible contingency event - Vic region - 10/11/16
At 0953 hrs the Hazelwood - Loy Yang No. 1 500 kV Line tripped at the Hazelwood end only. The line was placed on load at 0956 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