Filter by category
Filter by Date
Cancellation - AEMO Intervention Event - Intervention price dispatch intervals - Direction South Australia region 11/02/2019.
Cancellation - AEMO Intervention Event - Intervention price dispatch intervals - Direction South Australia region 11/02/2019.
Refer AEMO Electricity Market Notices 67218 and 67219
The AEMO Intervention Event and all associated directions are cancelled from 0630 hrs 12/02/2019.
Manager NEM Real Time Operations
Cancellation of a Non-Credible Contingency Event: Tarong - Chinchilla No.7168 132 kV line and Tarong - Chinchilla No.7183 132 kV line in QLD1 due to Lightning.
Cancellation of reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any lightning activity in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.
Region: QLD1
Lines: Tarong - Chinchilla No.7168 132 kV and Tarong - Chinchilla No.7183 132 kV
Cancellation time: 11/02/2019 23:38
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 67216
Auto-generated on behalf of Manager NEM Real Time Operations
AEMO Intervention Event - Intervention price dispatch intervals - 11/02/2019
Refer AEMO Electricity Market Notice 67218
An AEMO Intervention Event occurred when AEMO issued a direction to maintain the power system in a secure operating state.
The AEMO Intervention Event commenced in the 2235 hrs dispatch interval and is forecast to apply until 0630 hrs 12/02/2019.
AEMO declares all dispatch intervals during the AEMO Intervention Event to be intervention price dispatch intervals.
The direction is expected to affect dispatch quantities for intervention pricing purposes from the 0035 hrs dispatch interval on 12/02/2019.
Manager NEM Real Time Operations
Direction - South Australia region 11/02/2019
In accordance with section 116 of the National Electricity Law, 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.
AEMO may issue or revoke additional directions in order to meet the current requirement, unless sufficient market response is provided.
A further market notice will be issued when all directions related to this requirement have been cancelled.
For the purposes of the National Electricity Rules this is a direction under clause 4.8.9(a).
Manager NEM Real Time Operations
Reclassification of a Non-Credible Contingency Event: Tarong - Chinchilla No.7168 132 kV line and Tarong - Chinchilla No.7183 132 kV line in QLD1 due to Lightning.
Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.
Region: QLD1
Lines: Tarong - Chinchilla No.7168 132 kV and Tarong - Chinchilla No.7183 132 kV
Duration: 11/02/2019 20:36 until further notice
Constraint set(s) invoked:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations
Update - Non-credible contingency event - Queensland region - 11/02/2019
Update - Non-credible contingency event - Queensland region - 11/02/2019
Refer AEMO ELECTRICITY MARKET NOTICE MN 67214
At 1616 hrs the Alan Sheriff (T150) substation No 1 132 kV bus tripped.
At 1647 hrs the Alan Sheriff (T150) substation No 1 132 kV bus was returned to service
AEMO did not instruct load shedding.
AEMO has been advised of the disconnection of 10 MW electrical load for 1 minute.
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 - 11/02/2019
Non-credible contingency event - Queensland region - 11/02/2019
At 1616 hrs the Alan Sherrif (T150) substation No 1 132 kV bus tripped.
AEMO did not instruct load shedding.
AEMO has been advised of the disconnection of 10 MW electrical load for 1 minute.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
Possible intervention to manage power system security in South Australia (SA) Region
The synchronous generating units expected to be synchronised in SA from 0030 hrs 12/02/19 to 0630 hrs 12/02/19 in Pre-dispatch published at 1530 hrs 11/02/19 are inadequate to maintain sufficient system strength in SA and hence a secure operating state.
AEMO currently estimates that, in the absence of sufficient market response by 2230 hrs 11/02/19, AEMO may need to intervene by issuing a direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised to maintain power system security in SA.
Manager NEM Real Time Operations
Cancellation of a Non-Credible Contingency Event: Moranbah - Goonyella No.7370 132 kV line and Moranbah - Goonyella No.7369 132 kV line in QLD1 due to Lightning.
Cancellation of reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any lightning activity in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.
Region: QLD1
Lines: Moranbah - Goonyella No.7370 132 kV and Moranbah - Goonyella No.7369 132 kV
Cancellation time: 11/02/2019 00:13
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 67207
Auto-generated on behalf of Manager NEM Real Time Operations