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55483POWER SYSTEM EVENTS28/10/2016 07:33:44 AM
Non-credible contingency event - NSW region - 28 Oct 2016
AEMO ELECTRICITY MARKET NOTICE
Non-credible contingency event - NSW region - 28 Oct 2016
At 0543 hrs the Canberra - Williamsdale No.3C 330kV transmission line and the Williamsdale 1 330/132 kV transformer 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 - 28 Oct 2016
At 0543 hrs the Canberra - Williamsdale No.3C 330kV transmission line and the Williamsdale 1 330/132 kV transformer 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
55456POWER SYSTEM EVENTS21/10/2016 09:26:29 PM
Update - Non-credible contingency event - Qld Region - 21 Oct 2016
AEMO ELECTRICITY MARKET NOTICE
Update - Non-credible contingency event - Qld Region - 21 Oct 2016
Refer to MN 55453
At 2101 hrs the Townsville South No 2 132kV 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 - Qld Region - 21 Oct 2016
Refer to MN 55453
At 2101 hrs the Townsville South No 2 132kV 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
55453POWER SYSTEM EVENTS21/10/2016 02:34:05 PM
Non-credible contingency event - Queensland region 21 October 2016
AEMO ELECTRICITY MARKET NOTICE
Townsville South Number 2 bus trip.
AEMO has become aware of the following circumstance(s) with respect to the power system,
At 1408 hrs the Townsville South Number 2 bus tripped. This disconnected the following feeders:
7303 Townsville South - Mount Stuart 132 kV line
7243 Townsville South - Mount Stuart 132 kV line
7130 Townsville South - Invicta Mill Tee Clare South 132 kV line
7249 Townsville South - Ross 132 kV line
7237 Townsville South - Townsville Zinc 132 kV line
The following constraint sets have been invoked
Q-MSPTS_7243
Q-MSPTS_7303
AEMO did not instruct load shedding.
Simultaneously with this event AEMO has observed a reduction in the electrical demand in the Queensland region of approximately 60 MW.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
Townsville South Number 2 bus trip.
AEMO has become aware of the following circumstance(s) with respect to the power system,
At 1408 hrs the Townsville South Number 2 bus tripped. This disconnected the following feeders:
7303 Townsville South - Mount Stuart 132 kV line
7243 Townsville South - Mount Stuart 132 kV line
7130 Townsville South - Invicta Mill Tee Clare South 132 kV line
7249 Townsville South - Ross 132 kV line
7237 Townsville South - Townsville Zinc 132 kV line
The following constraint sets have been invoked
Q-MSPTS_7243
Q-MSPTS_7303
AEMO did not instruct load shedding.
Simultaneously with this event AEMO has observed a reduction in the electrical demand in the Queensland region of approximately 60 MW.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
55345MARKET INTERVENTION11/10/2016 07:31:20 PM
Cancellation - Direction - South Australia region 11/10/16
AEMO ELECTRICITY MARKET NOTICE
Cancellation - Direction - South Australia region 11/10/16
Refer AEMO Electricity Market Notice 55339
The direction to a participant in the South Australia region was cancelled at 1906 hrs 11/10/16
Manager NEM Real Time Operations
Cancellation - Direction - South Australia region 11/10/16
Refer AEMO Electricity Market Notice 55339
The direction to a participant in the South Australia region was cancelled at 1906 hrs 11/10/16
Manager NEM Real Time Operations
55339MARKET INTERVENTION11/10/2016 05:05:04 PM
Direction - South Australia region 11/10/16
AEMO ELECTRICITY MARKET NOTICE.
Direction - South Australia region 11/10/16
In accordance with clause 4.8.9 of the National Electricity Rules AEMO has issued a direction to a participant in the South Australia region.
The direction was necessary to maintain the power system in a secure operating state.
The direction was issued at 1616 hrs 11/10/16 and is expected to stay in place until 0700 hrs 12/10/16.
Manager NEM Real Time Operations
Direction - South Australia region 11/10/16
In accordance with clause 4.8.9 of the National Electricity Rules AEMO has issued a direction to a participant in the South Australia region.
The direction was necessary to maintain the power system in a secure operating state.
The direction was issued at 1616 hrs 11/10/16 and is expected to stay in place until 0700 hrs 12/10/16.
Manager NEM Real Time Operations
55337MARKET INTERVENTION11/10/2016 04:12:03 PM
Forecast Intervention Event - South Australia region 11 and 12 October 2016
AEMO ELECTRICITY MARKET NOTICE
Forecast Intervention Event - South Australia region 11 and 12 October 2016
Predispatch is indicating a power system security violation in the South Australia region between 2100 hrs 11/10/16 and 1400hrs 12/10/16.
AEMO is seeking a market response from synchronous generating units in the South Australia region with an installed capacity of greater than 100 MW.
AEMO will determine the latest time at which it would need to intervene through a AEMO intervention event.
Manager NEM Real Time Operations
Forecast Intervention Event - South Australia region 11 and 12 October 2016
Predispatch is indicating a power system security violation in the South Australia region between 2100 hrs 11/10/16 and 1400hrs 12/10/16.
AEMO is seeking a market response from synchronous generating units in the South Australia region with an installed capacity of greater than 100 MW.
AEMO will determine the latest time at which it would need to intervene through a AEMO intervention event.
Manager NEM Real Time Operations
55334MARKET INTERVENTION11/10/2016 01:05:05 PM
Forecast Intervention Event - South Australia region 12/10/16
AEMO ELECTRICITY MARKET NOTICE
Forecast Intervention Event - South Australia region 12/10/16
Predispatch is indicating a power system security violation in the South Australia region between 0000 hrs and 1400hrs Wednesday 12 October 2016.
AEMO is seeking a market response from synchronous generating units in the South Australia region with an installed capacity of greater than 100 MW.
AEMO will determine the latest time at which it would need to intervene through a AEMO intervention event.
Manager NEM Real Time Operations
Forecast Intervention Event - South Australia region 12/10/16
Predispatch is indicating a power system security violation in the South Australia region between 0000 hrs and 1400hrs Wednesday 12 October 2016.
AEMO is seeking a market response from synchronous generating units in the South Australia region with an installed capacity of greater than 100 MW.
AEMO will determine the latest time at which it would need to intervene through a AEMO intervention event.
Manager NEM Real Time Operations
55308MARKET INTERVENTION10/10/2016 05:32:49 AM
Cancellation - Direction - South Australia region
Cancellation - Direction - South Australia region
Refer AEMO Electricity Market Notice 55293
The direction was issued at 2054 hrs 09/10/16 and cancelled at 0530 hrs 10/10/16.
Manager NEM Real Time Operations
Refer AEMO Electricity Market Notice 55293
The direction was issued at 2054 hrs 09/10/16 and cancelled at 0530 hrs 10/10/16.
Manager NEM Real Time Operations
55294MARKET INTERVENTION09/10/2016 10:04:11 PM
Direction - South Australia region - Intervention Pricing
AEMO ELECTRICITY MARKET NOTICE.
Refer AEMO Electricity Market Notice no. 55293.
An AEMO Intervention Event has been implemented by issuing a direction to maintain the power system in a secure operating state.
AEMO declares all dispatch intervals during the AEMO Intervention Event to be intervention price dispatch intervals.
The AEMO Intervention Event will commence in the 0000 hrs 10/10/16 dispatch interval and is forecast to apply until 0530 hrs 10/10/16
Intervention pricing will not be implemented from the 0000 hrs 10/10/16 dispatch interval until the end of the AEMO Intervention Event.
Manager NEM Real Time Operations
Refer AEMO Electricity Market Notice no. 55293.
An AEMO Intervention Event has been implemented by issuing a direction to maintain the power system in a secure operating state.
AEMO declares all dispatch intervals during the AEMO Intervention Event to be intervention price dispatch intervals.
The AEMO Intervention Event will commence in the 0000 hrs 10/10/16 dispatch interval and is forecast to apply until 0530 hrs 10/10/16
Intervention pricing will not be implemented from the 0000 hrs 10/10/16 dispatch interval until the end of the AEMO Intervention Event.
Manager NEM Real Time Operations