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58686POWER SYSTEM EVENTS03/06/2017 08:52:19 PM
Update - Non-credible contingency event - NSW region - 3 June 2017
AEMO ELECTRICITY MARKET NOTICE
Update - Non-credible contingency event - NSW region - 3 June 2017
Update to Market Notice 58684.
At 2029 hrs the Vales Point 330kV Gen Busbar 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 - NSW region - 3 June 2017
Update to Market Notice 58684.
At 2029 hrs the Vales Point 330kV Gen Busbar 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
58684POWER SYSTEM EVENTS03/06/2017 08:29:56 PM
Non-credible contingency event - NSW region -03/06/2017
AEMO ELECTRICITY MARKET NOTICE
Non-credible contingency event - NSW region -03/06/2017
At 2010 hrs the Gen 330 kV Busbars at Vales Point Power Station tripped.
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 -03/06/2017
At 2010 hrs the Gen 330 kV Busbars at Vales Point Power Station tripped.
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
58659POWER SYSTEM EVENTS31/05/2017 12:29:44 PM
Update - Non-credible contingency event - - Victoria region - Wednesday, 31 May 2017
AEMO ELECTRICITY MARKET NOTICE
Update - Non-credible contingency event - - Victoria region - Wednesday, 31 May 2017
Refer AEMO Electricity Market Notice 58658.
At 1202 hrs the No1 and No3 500 kV Busbars at Loy Yang Power Station have been 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 - Wednesday, 31 May 2017
Refer AEMO Electricity Market Notice 58658.
At 1202 hrs the No1 and No3 500 kV Busbars at Loy Yang Power Station have been 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
58658POWER SYSTEM EVENTS31/05/2017 12:21:37 PM
Update -Non-credible contingency event - Victoria region - Wednesday, 31 May 2017
AEMO ELECTRICITY MARKET NOTICE
Update -Non-credible contingency event - Victoria region - Wednesday, 31 May 2017
Refer AEMO Electricity Market Notice 58657
At 1116 hrs the No1 and No3 500 kV Busbars at Loy Yang Power Station tripped. 1010 MW of generation tripped.
AEMO has been advised of disconnection of bulk electrical load 33 MW in the Tasmania region.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
Update -Non-credible contingency event - Victoria region - Wednesday, 31 May 2017
Refer AEMO Electricity Market Notice 58657
At 1116 hrs the No1 and No3 500 kV Busbars at Loy Yang Power Station tripped. 1010 MW of generation tripped.
AEMO has been advised of disconnection of bulk electrical load 33 MW in the Tasmania region.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
58657POWER SYSTEM EVENTS31/05/2017 11:53:21 AM
Non-credible contingency event - Victoria region - Wednesday, 31 May 2017
AEMO ELECTRICITY MARKET NOTICE
Non-credible contingency event - Victoria region - Wednesday, 31 May 2017
At 1116 hrs the No1 and No3 500 kV Busbars at Loy Yang Power Station tripped. 1010 MW of generation tripped.
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 - Wednesday, 31 May 2017
At 1116 hrs the No1 and No3 500 kV Busbars at Loy Yang Power Station tripped. 1010 MW of generation tripped.
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
58643POWER SYSTEM EVENTS28/05/2017 10:53:51 AM
Update - Non-credible contingency event - Qld Region - 28 May 2017
AEMO ELECTRICITY MARKET NOTICE
Refer AEMO Electricity Market Notice 58642
At 1019 hrs at T65 Alligator Creek the No. 1 and No. 2 132 kV Bus 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
Refer AEMO Electricity Market Notice 58642
At 1019 hrs at T65 Alligator Creek the No. 1 and No. 2 132 kV Bus 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
58642POWER SYSTEM EVENTS28/05/2017 08:43:45 AM
Non-credible contingency event - Qld Region - 28 May 2017
AEMO ELECTRICITY MARKET NOTICE
Non-credible contingency event - Qld region - 28/05/17
At 0756 hrs at T65 Alligator Creek the No. 1 and No. 2 132 kV Bus tripped.
AEMO did not instruct load shedding.
AEMO has been advised approximately 30 MW of load was lost.
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 - 28/05/17
At 0756 hrs at T65 Alligator Creek the No. 1 and No. 2 132 kV Bus tripped.
AEMO did not instruct load shedding.
AEMO has been advised approximately 30 MW of load was lost.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
58630POWER SYSTEM EVENTS25/05/2017 12:49:59 PM
Update - Non-credible contingency event - Vic Region - 25 May 2017
AEMO ELECTRICITY MARKET NOTICE
Update - Non-credible contingency event - Vic Region - 25 May 2017
Refer to AEMO Electricity Market Notices 58628 and 58629
At 0924 hrs and at 1051 hrs the South Morang - Sydenham No.1 500 kV Line CBs opened at the South Morang end only.
Following a short outage, the line has been returned to service.
The cause of this non credible contingency event has been identified and AEMO is satisfied that this non-credible event is unlikely to re-occur.
AEMO will not reclassify this event as a credible contingency event.
Manager NEM Real Time Operations
Update - Non-credible contingency event - Vic Region - 25 May 2017
Refer to AEMO Electricity Market Notices 58628 and 58629
At 0924 hrs and at 1051 hrs the South Morang - Sydenham No.1 500 kV Line CBs opened at the South Morang end only.
Following a short outage, the line has been returned to service.
The cause of this non credible contingency event has been identified and AEMO is satisfied that this non-credible event is unlikely to re-occur.
AEMO will not reclassify this event as a credible contingency event.
Manager NEM Real Time Operations
58629POWER SYSTEM EVENTS25/05/2017 11:20:42 AM
Update - Non-credible contingency event - Vic Region - 25 May 2017
AEMO ELECTRICITY MARKET NOTICE
Update - Non-credible contingency event - Vic Region - 25 May 2017
Refer AEMO Electricity Market Notice 58628
Again at 1051 hrs the South Morang - Sydenham No.1 500 kV Line CBs opened at the South Morang end only.
The cause of this non credible contingency event is not known at this stage.
The Line remains out of service for investigation.
Constraint set V-SMSY invoked 1105 hrs to further notice.
The constraint set contains equations with the following interconnectors on the left hand side:
VIC1-NSW1
V-SA
V-S-MNSP1
T-V-MNSP1
Refer to AEMO Network Outage Scheduler (NOS) for further information.
Manager NEM Real Time Operations
Update - Non-credible contingency event - Vic Region - 25 May 2017
Refer AEMO Electricity Market Notice 58628
Again at 1051 hrs the South Morang - Sydenham No.1 500 kV Line CBs opened at the South Morang end only.
The cause of this non credible contingency event is not known at this stage.
The Line remains out of service for investigation.
Constraint set V-SMSY invoked 1105 hrs to further notice.
The constraint set contains equations with the following interconnectors on the left hand side:
VIC1-NSW1
V-SA
V-S-MNSP1
T-V-MNSP1
Refer to AEMO Network Outage Scheduler (NOS) for further information.
Manager NEM Real Time Operations