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53705POWER SYSTEM EVENTS08/06/2016 02:45:06 AM
Update - Non-Credible Contingency Event - Vic Region - 8 June 2016
AEMO ELECTRICITY MARKET NOTICE
Update - Non-credible contingency event - Victoria region - 8 June 2016
Update to MN 53704
At 0219 hrs the Yallourn No. 2 220 kV bus 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 - Victoria region - 8 June 2016
Update to MN 53704
At 0219 hrs the Yallourn No. 2 220 kV bus 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
53704POWER SYSTEM EVENTS08/06/2016 01:41:50 AM
Non-Credible Contingency Event - Vic Region - 8 June 2016
AEMO ELECTRICITY MARKET NOTICE
Non-credible contingency event - Victoria region - 8 June 2016
At 0129 hrs the Yallourn No. 2 220 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 is not known at this stage.
Manager NEM Real Time Operations
Non-credible contingency event - Victoria region - 8 June 2016
At 0129 hrs the Yallourn No. 2 220 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 is not known at this stage.
Manager NEM Real Time Operations
53677POWER SYSTEM EVENTS07/06/2016 04:39:07 PM
Non-Credible Contingency Event - Vic Region - Tues 7th Jun 2016
AEMO ELECTRICITY MARKET NOTICE
Non-Credible Contingency Event - Vic Region - Tues 7th Jun 2016
At 1610 hrs the Richmond No 2 and No 4 220 kV Buses tripped in the Victoria region.
(Coincident with a planned outage Rowville - Richmond No 1 220 kV Line )
AEMO has not been advised of any disconnection of bulk electrical load.
The cause of this non credible contingency event is known
Manager NEM Real Time Operations
Non-Credible Contingency Event - Vic Region - Tues 7th Jun 2016
At 1610 hrs the Richmond No 2 and No 4 220 kV Buses tripped in the Victoria region.
(Coincident with a planned outage Rowville - Richmond No 1 220 kV Line )
AEMO has not been advised of any disconnection of bulk electrical load.
The cause of this non credible contingency event is known
Manager NEM Real Time Operations
53566POWER SYSTEM EVENTS30/05/2016 02:38:40 PM
Cancellation - Non-credible contingency event - Victoria region - Monday, 30 May 2016
AEMO ELECTRICITY MARKET NOTICE
Cancellation Non-credible contingency event - Victoria region - Monday, 30 May 2016
Jeeralang No 2 220 kV Busbar tripped at 1339 hrs in the Victoria region.
Jeeralang No 2 220 kV Busbar returned to service at 1425 hrs.
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.
The following constraint sets have been revoked at 1430 hrs
V-JL_BUS 2 and CA_SPS_465E4858
Manager NEM Real Time Operations
Cancellation Non-credible contingency event - Victoria region - Monday, 30 May 2016
Jeeralang No 2 220 kV Busbar tripped at 1339 hrs in the Victoria region.
Jeeralang No 2 220 kV Busbar returned to service at 1425 hrs.
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.
The following constraint sets have been revoked at 1430 hrs
V-JL_BUS 2 and CA_SPS_465E4858
Manager NEM Real Time Operations
53565POWER SYSTEM EVENTS30/05/2016 02:13:54 PM
Non-credible contingency event - Victoria region - Monday, 30 May 2016
AEMO ELECTRICITY MARKET NOTICE
Non-credible contingency event - Victoria region - Monday, 30 May 2016
Jeeralang No 2 220 kV Busbar tripped at 1339 hrs in the Victoria region.
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.
To manage power system security for this event the following constraint sets have been invoked.
V-JL_BUS 2 and CA_SPS_465E4858
Manager NEM Real Time Operations
Non-credible contingency event - Victoria region - Monday, 30 May 2016
Jeeralang No 2 220 kV Busbar tripped at 1339 hrs in the Victoria region.
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.
To manage power system security for this event the following constraint sets have been invoked.
V-JL_BUS 2 and CA_SPS_465E4858
Manager NEM Real Time Operations
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