Market Notices

85333RECLASSIFY CONTINGENCY11/05/2021 02:53:48 PM

Reclassification of a Non-Credible Contingency Event: Bulli Creek - Dumaresq 8L 330KV line and Bulli Creek - Dumaresq 8M 330KV 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: Bulli Creek - Dumaresq 8L 330KV and Bulli Creek - Dumaresq 8M 330KV

Duration: 11/05/2021 14:53 until further notice

Constraint set(s) invoked:
I-QNI_ONE_PHASE_N-2 Constraint set contains the following interconnector(s) on the left hand side:
NSW1-QLD1


Auto-generated on behalf of Manager NEM Real Time Operations
     
85332POWER SYSTEM EVENTS11/05/2021 12:28:50 PM

Update - Non-credible contingency event - NSW region - 11/05/2021

AEMO ELECTRICITY MARKET NOTICE.

Update - Non-credible contingency event - NSW region - 11/05/2021

Refer AEMO ELECTRICITY MARKET NOTICE MN85323

At 1212 hrs the Port Macquarie - Taree No. 964 132 kV Line was returned to service.

The cause of this non-credible contingency event has been identified and AEMO is satisfied that another occurrence of this event is unlikely under the current circumstances.

AEMO will not reclassify this event as a credible contingency event.

Manager NEM Real Time Operations
     
85331MARKET INTERVENTION11/05/2021 02:05:35 PM

Cancellation - AEMO Intervention Event - Intervention dispatch intervals - Direction SA region - 10/05/2021

AEMO ELECTRICITY MARKET NOTICE

Cancellation - AEMO Intervention Event - Intervention dispatch intervals - Direction SA region - 10/05/2021

Refer Market Notice 85311

The AEMO Intervention Event and all associated directions are cancelled from 1330 hrs 11/05/2021

Manager NEM Real Time Operations
     
85329RESERVE NOTICE11/05/2021 12:56:33 PM

RESERVE NOTICE MT PASA PUBLICATION 11 May 2021

The MTPASA result published on 11 May 2021 identifies no Low Reserve Conditions.

This MTPASA run includes updates consistent with the May generation information page. Additionally, South Australian operational demand profiles have been updated to reflect new industrial consumer survey information on periods of planned industrial load reduction between May and November in 2021.

Please note that MTPASA informs the market of potential reliability issues to allow the market to respond in the first instance, potentially avoiding the need for any market intervention or direction from AEMO.

For further information, please refer to:
https://www.aemo.com.au/Electricity/National-Electricity-Market-NEM/Data/Market-Management-System-MMS/Projected-Assessment-of-System-Adequacy

This notice supersedes Market Notice 85085 published on 4th May 2021.

Background
As part of a broader process of implementing the reliability standard, AEMO runs the Medium Term Projected Assessment of System Adequacy (MTPASA) process weekly to forecast expected unserved energy levels over a two year period. If the expected annual unserved energy exceeds the maximum level specified by the Reliability Standard, a Low Reserve Condition is identified.

For more information about how AEMO implements the reliability standard, please view the Reliability Standard Implementation Guidelines (RSIG) available on AEMO's website at
https://www.aemo.com.au/Electricity/National-Electricity-Market-NEM/Planning-and-forecasting/Reliability-Standard-Implementation-Guidelines

Forecasting
AEMO
     
85328MARKET SYSTEMS11/05/2021 11:14:44 AM

CHG0064354 : Implementation of r40 schema to FBS responder as part of Gas Life Support project

Change Number: CHG0064354

Notification issued to: Market Notice

Notification Type: Initial

Change Type: Normal

Service/ Component: Gas Hub

Change Title: Implementation of r40 schema to FBS responder as part of Gas Life Support project

Change Start Date & Time: 13/05/2021 10:00:00 AEST

Change End Date & Time: 14/05/2021 16:00:00 AEST

Outage Start Date & Time: 13/05/2021 13:00:00 AEST

Outage End Date & Time: 13/05/2021 17:00:00 AEST

Change Description:

AEMO is introducing the additional capability to perform gas certification with the r40 schema as part of gas life support program whilst retaining support for the existing schemas .

Environment: Pre-Production

Participant Impact and Requirements:

The following impacts are expected during this maintenance:

- Access to the Gas Certification Responder will be unavailable during the Change window
- Users are not required to take any action due to this change

Support Information:
Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600.
     
85327RECLASSIFY CONTINGENCY11/05/2021 07:14:15 AM

Cancellation of a Non-Credible Contingency Event: Bulli Creek - Dumaresq 8L 330KV line and Bulli Creek - Dumaresq 8M 330KV 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: Bulli Creek - Dumaresq 8L 330KV and Bulli Creek - Dumaresq 8M 330KV

Cancellation time: 11/05/2021 07:14

Constraint set(s) revoked:
I-QNI_ONE_PHASE_N-2 Constraint set contains the following interconnector(s) on the left hand side:
NSW1-QLD1


Refer AEMO Electricity Market Notice 85326

Auto-generated on behalf of Manager NEM Real Time Operations
     
85326RECLASSIFY CONTINGENCY11/05/2021 06:11:40 AM

Reclassification of a Non-Credible Contingency Event: Bulli Creek - Dumaresq 8L 330KV line and Bulli Creek - Dumaresq 8M 330KV 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: Bulli Creek - Dumaresq 8L 330KV and Bulli Creek - Dumaresq 8M 330KV

Duration: 11/05/2021 06:11 until further notice

Constraint set(s) invoked:
I-QNI_ONE_PHASE_N-2 Constraint set contains the following interconnector(s) on the left hand side:
NSW1-QLD1


Auto-generated on behalf of Manager NEM Real Time Operations
     
85325RECLASSIFY CONTINGENCY11/05/2021 05:34:15 AM

Cancellation of a Non-Credible Contingency Event: Bulli Creek - Dumaresq 8L 330KV line and Bulli Creek - Dumaresq 8M 330KV 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: Bulli Creek - Dumaresq 8L 330KV and Bulli Creek - Dumaresq 8M 330KV

Cancellation time: 11/05/2021 05:34

Constraint set(s) revoked:
I-QNI_ONE_PHASE_N-2 Constraint set contains the following interconnector(s) on the left hand side:
NSW1-QLD1


Refer AEMO Electricity Market Notice 85318

Auto-generated on behalf of Manager NEM Real Time Operations
     
85324INTER-REGIONAL TRANSFER11/05/2021 05:20:50 AM

Inter-regional transfer limit variation - 964 Line - NSW region - 11/05/2021

AEMO ELECTRICITY MARKET NOTICE

Inter-regional transfer limit variation - 964 Line - NSW region - 11/05/2021

At 0507 hrs 11/05/2021 there was an unplanned outage of Port Macquarie - Taree No. 964 132 kV Line

The following constraint set was invoked from 0515 hrs 11/05/2021.

N-TAPM_964

The 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
     
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