Filter by:
Filter by category
Filter by Date
From
To
83905INTER-REGIONAL TRANSFER03/04/2021 01:33:43 AM
Inter-regional transfer limit variation: Hazelwood - South Morang No 1 500 kV Line (VIC) - Voltage Control
AEMO ELECTRICITY MARKET NOTICE
The Hazelwood - South Morang No 1 500 kV Line has been de-energised to manage voltages in the Victoria region.
The following constraint set was invoked at 0130 hrs 03/04/2021.
V-HWSM
The constraint set contains equations with the following interconnectors on the LHS.
T-V-MNSP
V-S-MNSP1
V-SA
VIC1-NSW1
Refer to AEMO Network Outage Scheduler (NOS) for further details
Manager NEM Real Time Operations
The Hazelwood - South Morang No 1 500 kV Line has been de-energised to manage voltages in the Victoria region.
The following constraint set was invoked at 0130 hrs 03/04/2021.
V-HWSM
The constraint set contains equations with the following interconnectors on the LHS.
T-V-MNSP
V-S-MNSP1
V-SA
VIC1-NSW1
Refer to AEMO Network Outage Scheduler (NOS) for further details
Manager NEM Real Time Operations
83904RECLASSIFY CONTINGENCY02/04/2021 06:04:46 PM
Cancellation of a Non-Credible Contingency Event: Collinsville North - Proserpine No.7125 132 kV line and Collinsville North - Proserpine No.7126 132 kV line in QLD1 due to Lightning.
AEMO ELECTRICITY MARKET NOTICE
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: Collinsville North - Proserpine No.7125 132 kV and Collinsville North - Proserpine No.7126 132 kV
Cancellation time: 02/04/2021 18:04
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 83903
Auto-generated on behalf of Manager NEM Real Time Operations
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: Collinsville North - Proserpine No.7125 132 kV and Collinsville North - Proserpine No.7126 132 kV
Cancellation time: 02/04/2021 18:04
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 83903
Auto-generated on behalf of Manager NEM Real Time Operations
83903RECLASSIFY CONTINGENCY02/04/2021 05:03:25 PM
Reclassification of a Non-Credible Contingency Event: Collinsville North - Proserpine No.7125 132 kV line and Collinsville North - Proserpine No.7126 132 kV line in QLD1 due to Lightning.
AEMO ELECTRICITY MARKET NOTICE
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: Collinsville North - Proserpine No.7125 132 kV and Collinsville North - Proserpine No.7126 132 kV
Duration: 02/04/2021 17:03 until further notice
Constraint set(s) invoked:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations
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: Collinsville North - Proserpine No.7125 132 kV and Collinsville North - Proserpine No.7126 132 kV
Duration: 02/04/2021 17:03 until further notice
Constraint set(s) invoked:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations
83902INTER-REGIONAL TRANSFER02/04/2021 04:03:28 PM
Update - Inter-regional transfer limit variation - Rowville - South Morang No 3 500 kV Line - Vic region - 02/04/2021
AEMO ELECTRICITY MARKET NOTICE
Update - Inter-regional transfer limit variation - Rowville - South Morang No 3 500 kV Line - Vic region - 02/04/2021
Refer AEMO ELECTRICITY MARKET NOTICE MN83898
At 1350 hrs 02/04/2021 there was an unplanned outage of the Rowville - South Morang No 3 500 kV Line.
The following constraint set was invoked from 1405 hrs to 1525 hrs 02/04/2021.
V-X_HWSM_ROSM
Following the return to service of the Hazelwood - South Morang No 2 500 kV line, the following constraint set was invoked at 1525 hrs 02/04/2021.
V-ROSM
This constraint set contains equations with the following interconnectors on the LHS.
T-V-MNSP1
V-SA
V-S-MNSP1
VIC1- NSW1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
Update - Inter-regional transfer limit variation - Rowville - South Morang No 3 500 kV Line - Vic region - 02/04/2021
Refer AEMO ELECTRICITY MARKET NOTICE MN83898
At 1350 hrs 02/04/2021 there was an unplanned outage of the Rowville - South Morang No 3 500 kV Line.
The following constraint set was invoked from 1405 hrs to 1525 hrs 02/04/2021.
V-X_HWSM_ROSM
Following the return to service of the Hazelwood - South Morang No 2 500 kV line, the following constraint set was invoked at 1525 hrs 02/04/2021.
V-ROSM
This constraint set contains equations with the following interconnectors on the LHS.
T-V-MNSP1
V-SA
V-S-MNSP1
VIC1- NSW1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
83898INTER-REGIONAL TRANSFER02/04/2021 02:04:14 PM
Inter-regional transfer limit variation - Rowville - South Morang No 3 500 kV Line - Vic region - 02/04/2021
AEMO ELECTRICITY MARKET NOTICE
Inter-regional transfer limit variation - Rowville - South Morang No 3 500 kV Line - Vic region - 02/04/2021
At 1350 hrs 02/04/2021 there was an unplanned outage of the Rowville - South Morang No 3 500 kV Line.
The following constraint set was invoked at 1405 hrs 02/04/2021
V-X_HWSM_ROSM
This constraint set contains equations with the following interconnectors on the LHS.
T-V-MNSP1
V-SA
V-S-MNSP1
VIC1- NSW1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
Inter-regional transfer limit variation - Rowville - South Morang No 3 500 kV Line - Vic region - 02/04/2021
At 1350 hrs 02/04/2021 there was an unplanned outage of the Rowville - South Morang No 3 500 kV Line.
The following constraint set was invoked at 1405 hrs 02/04/2021
V-X_HWSM_ROSM
This constraint set contains equations with the following interconnectors on the LHS.
T-V-MNSP1
V-SA
V-S-MNSP1
VIC1- NSW1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
83895INTER-REGIONAL TRANSFER02/04/2021 01:43:14 AM
Inter-regional transfer limit variation: Hazelwood - South Morang No 2 500 kV Line (VIC) - Voltage Control
AEMO ELECTRICITY MARKET NOTICE
The Hazelwood - South Morang No 2 500 kV Line has been de-energised to manage voltages in the Victoria region.
The following constraint set was invoked at 0135 hrs 2/04/2021.
V-HWSM
The constraint set contains equations with the following interconnectors on the LHS.
T-V-MNSP
V-S-MNSP1
V-SA
VIC1-NSW1
Refer to AEMO Network Outage Scheduler (NOS) for further details
Manager NEM Real Time Operations
The Hazelwood - South Morang No 2 500 kV Line has been de-energised to manage voltages in the Victoria region.
The following constraint set was invoked at 0135 hrs 2/04/2021.
V-HWSM
The constraint set contains equations with the following interconnectors on the LHS.
T-V-MNSP
V-S-MNSP1
V-SA
VIC1-NSW1
Refer to AEMO Network Outage Scheduler (NOS) for further details
Manager NEM Real Time Operations
83891MARKET INTERVENTION01/04/2021 05:58:32 PM
Direction - SA Region - 01/04/2021
AEMO ELECTRICITY MARKET NOTICE.
Direction - SA Region - 01/04/2021
In accordance with section 116 of the National Electricity Law, AEMO has issued a direction to a participant in the SA region. For the purposes of the National Electricity Rules this is a direction under clause 4.8.9(a).
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.
The issue of the direction commences an AEMO intervention event.
AEMO declares all dispatch intervals during the event to be intervention dispatch intervals, commencing from the interval ending 1805 hrs on 01/04/2021.
Intervention pricing does not apply to this AEMO intervention event.
Manager NEM Real Time Operations
Direction - SA Region - 01/04/2021
In accordance with section 116 of the National Electricity Law, AEMO has issued a direction to a participant in the SA region. For the purposes of the National Electricity Rules this is a direction under clause 4.8.9(a).
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.
The issue of the direction commences an AEMO intervention event.
AEMO declares all dispatch intervals during the event to be intervention dispatch intervals, commencing from the interval ending 1805 hrs on 01/04/2021.
Intervention pricing does not apply to this AEMO intervention event.
Manager NEM Real Time Operations
83890MARKET INTERVENTION01/04/2021 04:08:57 PM
Cancellation - AEMO Intervention Event - Intervention dispatch intervals - Direction SA region - 31/03/2021
AEMO ELECTRICITY MARKET NOTICE
Cancellation - AEMO Intervention Event - Intervention dispatch intervals - Direction SA region - 31/03/2021
Refer Market Notice 83883
The AEMO Intervention Event and all associated directions are cancelled from 1600 hrs 01/04/2021
Manager NEM Real Time Operations
Cancellation - AEMO Intervention Event - Intervention dispatch intervals - Direction SA region - 31/03/2021
Refer Market Notice 83883
The AEMO Intervention Event and all associated directions are cancelled from 1600 hrs 01/04/2021
Manager NEM Real Time Operations
83888MARKET INTERVENTION01/04/2021 01:38:53 PM
Possible intervention to manage power system security in South Australia (SA) Region
AEMO ELECTRICITY MARKET NOTICE
Possible intervention to manage power system security in South Australia (SA) Region
The synchronous generating units expected to be synchronised in SA from 0030hrs 02/04/2021 to 0400 hrs 03/04/2021 in Pre-dispatch published at 1330 hrs 01/04/2021 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 1800 hrs 01/04/2021, 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
Possible intervention to manage power system security in South Australia (SA) Region
The synchronous generating units expected to be synchronised in SA from 0030hrs 02/04/2021 to 0400 hrs 03/04/2021 in Pre-dispatch published at 1330 hrs 01/04/2021 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 1800 hrs 01/04/2021, 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