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Cancellation -Inter-regional transfer limit variation - constraint automation to manage Power System Security in NSW region - 08/07/2024
Cancellation -Inter-regional transfer limit variation - constraint automation to manage Power System Security in NSW region - 08/07/2024
Refer AEMO Electricity Market Notice 117314.
Constraint set CA_SYDS_559DA1A7 revoked 1105 hrs.
Manager NEM Real Time Operations
Inter-regional transfer limit variation - constraint automation to manage Power System Security in NSW region - 08/07/2024
In order to maintain the power system in a secure operating state in the NSW region, AEMO has invoked automated constraint set CA_SYDS_559DA1A7 from 0825hrs until further notice.
This constraint set contains equations with the following interconnector on the LHS;
N-Q-MNSP1
Refer to AEMO Network Outage Scheduler (NOS) for further information.
Manager NEM Real Time Operations
Inter-regional transfer limit variation - 89 Lismore - Coffs 330kV Line - NSW region - 08/07/2024
Inter-regional transfer limit variation - 89 Lismore - Coffs 330kV Line - NSW region - 08/07/2024
At 0511 hrs 08/07/2024 there was an unplanned outage of 89 Lismore - Coffs 330kV Line.
The following constraint set(s) invoked at 0525 hrs 08/07/2024
N-CHLS_89, N-DLETS_OS, N-X_MBTE_3
This constraint set(s) contains equations with the following interconnectors on the LHS.
N-Q-MNSP1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
NON-CONFORMANCE Region QLD1 Sunday, 7 July 2024
NON-CONFORMANCE QLD1 Region Sunday, 7 July 2024
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: TARONG#3
Duration: 07/07/2024 09:05 to 07/07/2024 09:30
Amount: -16 MW
Constraint: NC-Q_TARONG#3
Auto-generated on behalf of Manager NEM Real Time Operations
Cancellation: Reclassification of non-credible contingency event due to existence of widespread abnormal conditions - SA region.
AEMO considers the occurrence of a non-credible contingency event due to the widespread abnormal conditions advised in AEMO Electricity Market Notice 117306 is no longer reasonably possible and accordingly its classification has reverted to non-credible.
Cancellation time: 2300 hrs 06/07/2024.
Constraint set revoked: I-VS_250
Manager NEM Real Time Operations
Reclassification of non-credible contingency event due to existence of widespread abnormal conditions - SA region.
AEMO has identified that a non-credible contingency event impacting the power system is more likely to occur and is considered reasonably possible because of the existence of widespread abnormal conditions namely severe weather in the SA region.
AEMO has therefore reclassified the occurrence of a non-credible contingency event involving multiple plant due to these abnormal conditions as credible.
AEMO has taken the following action to maintain power system security at 2120 hrs 06/07/2024.
Constraint set invoked: I-VS_250
Duration: 2120 hrs 06/07/2024 until further notice
Need for further measures is being monitored and further measures may be implemented in line with the Power System Security Guidelines (SO_OP_3715).
Manager NEM Real Time Operations
NON-CONFORMANCE Region SA1 Saturday, 6 July 2024
NON-CONFORMANCE SA1 Region Saturday, 6 July 2024
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: BOWWPV1
Duration: 06/07/2024 13:20 to 06/07/2024 13:55
Amount: 6 MW
Constraint: NC-S_BOWWPV1
Auto-generated on behalf of Manager NEM Real Time Operations
Inter-regional transfer limit variation -Murraylink - SA region - 06/07/2024
Inter-regional transfer limit variation -Murraylink - SA region - 06/07/2024
A planned outage of Murraylink in the SA region was scheduled from 0700 hrs 28/06/2024 to 1700 hrs 09/07/2024.
The outage has been completed and Murraylink returned to service at 1035 hrs 06/07/2024
Constraint set(s) revoked: I-MURRAYLINK
Manager NEM Real Time Operations
NON-CONFORMANCE Region QLD1 Saturday, 6 July 2024
NON-CONFORMANCE QLD1 Region Saturday, 6 July 2024
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: MPP_2
Duration: 06/07/2024 04:00 to 06/07/2024 04:30
Amount: 33 MW
Constraint: NC-Q_MPP_2
Auto-generated on behalf of Manager NEM Real Time Operations