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91045RECLASSIFY CONTINGENCY25/09/2021 05:49:05 AM
Cancellation of a Non-Credible Contingency Event: Hazelwood - Rowville No.1 220kV line and Hazelwood - Rowville No.2 220kV line in VIC1 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: VIC1
Lines: Hazelwood - Rowville No.1 220kV and Hazelwood - Rowville No.2 220kV
Cancellation time: 25/09/2021 05:49
Constraint set(s) revoked:
V-HWRO_R_N-2 Constraint set contains the following interconnector(s) on the left hand side:
NONE
Refer AEMO Electricity Market Notice 91044
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: VIC1
Lines: Hazelwood - Rowville No.1 220kV and Hazelwood - Rowville No.2 220kV
Cancellation time: 25/09/2021 05:49
Constraint set(s) revoked:
V-HWRO_R_N-2 Constraint set contains the following interconnector(s) on the left hand side:
NONE
Refer AEMO Electricity Market Notice 91044
Auto-generated on behalf of Manager NEM Real Time Operations
91044RECLASSIFY CONTINGENCY25/09/2021 04:44:30 AM
Reclassification of a Non-Credible Contingency Event: Hazelwood - Rowville No.1 220kV line and Hazelwood - Rowville No.2 220kV line in VIC1 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: VIC1
Lines: Hazelwood - Rowville No.1 220kV and Hazelwood - Rowville No.2 220kV
Duration: 25/09/2021 04:44 until further notice
Constraint set(s) invoked:
V-HWRO_R_N-2 Constraint set contains the following interconnector(s) on the left hand side:
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: VIC1
Lines: Hazelwood - Rowville No.1 220kV and Hazelwood - Rowville No.2 220kV
Duration: 25/09/2021 04:44 until further notice
Constraint set(s) invoked:
V-HWRO_R_N-2 Constraint set contains the following interconnector(s) on the left hand side:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations
91043RECLASSIFY CONTINGENCY24/09/2021 09:54:05 PM
Cancellation of a Non-Credible Contingency Event: Farrell-John Butters line and Farrell-Rosebery-Newton-Queenstown line in TAS1 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: TAS1
Lines: Farrell-John Butters and Farrell-Rosebery-Newton-Queenstown
Cancellation time: 24/09/2021 21:54
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 91042
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: TAS1
Lines: Farrell-John Butters and Farrell-Rosebery-Newton-Queenstown
Cancellation time: 24/09/2021 21:54
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 91042
Auto-generated on behalf of Manager NEM Real Time Operations
91042RECLASSIFY CONTINGENCY24/09/2021 08:52:46 PM
Reclassification of a Non-Credible Contingency Event: Farrell-John Butters line and Farrell-Rosebery-Newton-Queenstown line in TAS1 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: TAS1
Lines: Farrell-John Butters and Farrell-Rosebery-Newton-Queenstown
Duration: 24/09/2021 20:52 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: TAS1
Lines: Farrell-John Butters and Farrell-Rosebery-Newton-Queenstown
Duration: 24/09/2021 20:52 until further notice
Constraint set(s) invoked:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations
91041MARKET INTERVENTION24/09/2021 05:57:18 PM
Cancellation - AEMO Intervention Event - Intervention dispatch intervals - Direction SA region - 22/09/2021
AEMO ELECTRICITY MARKET NOTICE
Cancellation - AEMO Intervention Event - Intervention dispatch intervals - Direction SA region - 22/09/2021
Refer Market Notice 90956
The AEMO Intervention Event and all associated directions are cancelled from 1800 hrs 24/09/2021
Manager NEM Real Time Operations
Cancellation - AEMO Intervention Event - Intervention dispatch intervals - Direction SA region - 22/09/2021
Refer Market Notice 90956
The AEMO Intervention Event and all associated directions are cancelled from 1800 hrs 24/09/2021
Manager NEM Real Time Operations
91039MARKET INTERVENTION24/09/2021 04:53:44 PM
Direction - SA Region - 24/09/2021
AEMO ELECTRICITY MARKET NOTICE
Direction - SA Region - 24/09/2021
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 1635 hrs on 24/09/2021.
Intervention pricing does not apply to this AEMO intervention event.
Manager NEM Real Time Operations
Direction - SA Region - 24/09/2021
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 1635 hrs on 24/09/2021.
Intervention pricing does not apply to this AEMO intervention event.
Manager NEM Real Time Operations
91035MARKET INTERVENTION24/09/2021 04:28:16 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 currently expected to be synchronised in SA from 0830 hrs 25/09/2021 to 1600 hrs 25/09/2021 will be inadequate to maintain sufficient system strength in SA and hence a secure operating state.
AEMO estimates that, in the absence of sufficient market response by 1630 hrs 24/09/2021, 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 Operation
Possible intervention to manage power system security in South Australia (SA) Region
The synchronous generating units currently expected to be synchronised in SA from 0830 hrs 25/09/2021 to 1600 hrs 25/09/2021 will be inadequate to maintain sufficient system strength in SA and hence a secure operating state.
AEMO estimates that, in the absence of sufficient market response by 1630 hrs 24/09/2021, 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 Operation
91029PRICES UNCHANGED24/09/2021 03:54:11 PM
[EventId:202109241530_confirmed] Prices for interval 24-Sep-2021 15:30 are now confirmed
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 1550 hrs on 24 September 2021
PRICES ARE NOW CONFIRMED for dispatch interval 24-Sep-2021 15:30.
In accordance with Market Notice 91018 AEMO has reviewed this dispatch interval and determined that:
- Manifestly Incorrect Inputs did not apply
Prices remain unchanged.
This is an AEMO autogenerated Market Notice.
Issued by Australian Energy Market Operator Ltd at 1550 hrs on 24 September 2021
PRICES ARE NOW CONFIRMED for dispatch interval 24-Sep-2021 15:30.
In accordance with Market Notice 91018 AEMO has reviewed this dispatch interval and determined that:
- Manifestly Incorrect Inputs did not apply
Prices remain unchanged.
This is an AEMO autogenerated Market Notice.
91028PRICES UNCHANGED24/09/2021 03:53:25 PM
[EventId:202109241550_confirmed] Prices for interval 24-Sep-2021 15:50 are now confirmed
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 1550 hrs on 24 September 2021
PRICES ARE NOW CONFIRMED for dispatch interval 24-Sep-2021 15:50.
In accordance with Market Notice 91022 AEMO has reviewed this dispatch interval and determined that:
- Manifestly Incorrect Inputs did not apply
Prices remain unchanged.
This is an AEMO autogenerated Market Notice.
Issued by Australian Energy Market Operator Ltd at 1550 hrs on 24 September 2021
PRICES ARE NOW CONFIRMED for dispatch interval 24-Sep-2021 15:50.
In accordance with Market Notice 91022 AEMO has reviewed this dispatch interval and determined that:
- Manifestly Incorrect Inputs did not apply
Prices remain unchanged.
This is an AEMO autogenerated Market Notice.