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Inter-regional transfer limit variation - Lismore SVC - NSW region - 12 April 2020
At 0322 hrs 12/04/2020 there was an unplanned outage of the Lismore SVC.
The following constraint set invoked at 0330 hrs
N-LS_VC1
This constraint set contains equations with the following interconnectors on the LHS.
N-Q-MNSP1
NSW1-QLD1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
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.
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: 11/04/2020 15:44
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 75305
Auto-generated on behalf of Manager NEM Real Time Operations
Direction - SA region - 11/04/2020
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 1705 hrs on 11/04/2020.
Intervention pricing does not apply to this AEMO intervention event.
Manager NEM Real Time Operations
Cancellation - AEMO Intervention Event - Intervention dispatch intervals - Direction SA region - 10/04/2020
Refer Market Notice 75265
The AEMO Intervention Event and all associated directions are cancelled from 1530 hrs 11/04/2020.
Manager NEM Real Time Operation
Possible intervention to manage power system security in South Australia (SA) Region
Possible intervention to manage power system security in South Australia (SA) Region
The synchronous generating units expected to be synchronised in SA from 0200 hrs to 1400 hrs 12/04/2020 in Pre-dispatch published at 1430 hrs 11/04/2020 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 1700 hrs 11/04/2020, 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
[EventId:202004111355_confirmed] Prices for interval 11-Apr-2020 13:55 are now confirmed
Issued by Australian Energy Market Operator Ltd at 1415 hrs on 11 April 2020
PRICES ARE NOW CONFIRMED for dispatch interval 11-Apr-2020 13:55.
In accordance with Market Notice 75307 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.
[EventId:202004111415_confirmed] Prices for interval 11-Apr-2020 14:15 are now confirmed
Issued by Australian Energy Market Operator Ltd at 1415 hrs on 11 April 2020
PRICES ARE NOW CONFIRMED for dispatch interval 11-Apr-2020 14:15.
In accordance with Market Notice 75311 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.
[EventId:202004111410_confirmed] Prices for interval 11-Apr-2020 14:10 are now confirmed
Issued by Australian Energy Market Operator Ltd at 1415 hrs on 11 April 2020
PRICES ARE NOW CONFIRMED for dispatch interval 11-Apr-2020 14:10.
In accordance with Market Notice 75310 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.
[EventId:202004111405_confirmed] Prices for interval 11-Apr-2020 14:05 are now confirmed
Issued by Australian Energy Market Operator Ltd at 1415 hrs on 11 April 2020
PRICES ARE NOW CONFIRMED for dispatch interval 11-Apr-2020 14:05.
In accordance with Market Notice 75309 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.