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Update - Possible intervention to manage power system security in SA region
Update - Possible intervention to manage power system security in SA region
Refer AEMO Electricity Market Notice 116573
The synchronous generating units currently expected to be synchronised in SA from 1000 hrs 11/05/2024 will be inadequate to maintain a secure operating state in SA .
AEMO estimates that, in the absence of sufficient market response by 1700 hrs 10/05/2024, 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 SA region
Possible intervention to manage power system security in SA region
The synchronous generating units currently expected to be synchronised in SA from 0930 hrs 11/05/2024 will be inadequate to maintain a secure operating state in SA .
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
Reclassification of non-credible contingency event due to existence of widespread abnormal condition/s - NEM regions.
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 Space Weather Watch in the NEM regions.
AEMO has therefore reclassified the occurrence of a non-credible contingency event involving multiple plant due to these abnormal conditions as credible.
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
Cancellation - Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to planned outage : Ross 275 kV SVC and Ross 275/132 kV No. 4 transformer - Qld region.
Cancellation - Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to planned outage.
AEMO considers the occurrence of a non-credible contingency event due to planned outage advised in AEMO Electricity Market Notice 116557 is no longer reasonably possible and accordingly its classification has reverted to non-credible.
Region: Qld
Elements: Ross 275 kV SVC and Ross 275/132 kV No. 4 transformer
Cancellation time: 1800 hrs 10/05/2024
Constraint set(s) invoked:
Nil
Manager NEM Real Time Operations
Cancellation - Possible intervention to manage power system security in SA region 10/05/2024
Cancellation - Possible intervention to manage power system security in SA region 10/05/2024
Refer Market Notice 116561
AEMO no longer foresees a possible requirement for intervention to manage power system security in SA region. The advice of possible intervention is cancelled from 1400 hrs 09/05/2024.
Manager NEM Real Time Operations
Possible intervention to manage power system security in SA region
Possible intervention to manage power system security in SA region
The synchronous generating units currently expected to be synchronised in SA from 0930 hrs 10/05/2024 will be inadequate to maintain a secure operating state in SA .
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
Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event: Ross 275 kV SVC and Ross 275/132 kV No. 4 transformer - Qld region.
Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event. AEMO considers the simultaneous trip of the following elements to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.
Region: Qld
Elements: Ross 275 kV SVC and Ross 275/132 kV No. 4 transformer
Duration: 1400 hrs 09/05/2024 until further notice
Constraint set(s) invoked:
Nil
Manager NEM Real Time Operations
Cancellation - Possible intervention to manage power system security in SA region 09/05/2024
Cancellation - Possible intervention to manage power system security in SA region 09/05/2024
Refer Market Notice 116528
AEMO no longer foresees a possible requirement for intervention to manage power system security in SA region. The advice of possible intervention is cancelled from 1400 hrs 08/05/2024.
Manager NEM Real Time Operations
Possible intervention to manage power system security in SA region
Possible intervention to manage power system security in SA region
The synchronous generating units currently expected to be synchronised in SA from 0830 hrs 09/05/2024 will be inadequate to maintain a secure operating state in SA .
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