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90816PRICES SUBJECT TO REVIEW20/09/2021 06:00:16 PM
[EventId:202109201805_review] Prices for interval 20-Sep-2021 18:05 are subject to review
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 1800 hrs on 20 September 2021
PRICES ARE SUBJECT TO REVIEW for dispatch interval 20-Sep-2021 18:05.
AEMO is reviewing these prices in accordance with:
- Clause 3.9.2B of the National Electricity Rules for Manifestly Incorrect Inputs
This is an AEMO autogenerated Market Notice.
Issued by Australian Energy Market Operator Ltd at 1800 hrs on 20 September 2021
PRICES ARE SUBJECT TO REVIEW for dispatch interval 20-Sep-2021 18:05.
AEMO is reviewing these prices in accordance with:
- Clause 3.9.2B of the National Electricity Rules for Manifestly Incorrect Inputs
This is an AEMO autogenerated Market Notice.
90815RESERVE NOTICE20/09/2021 05:45:05 PM
PDPASA - Cancellation of the Forecast Lack Of Reserve Level 1 (LOR1) in the Qld Region on 20/09/2021
AEMO ELECTRICITY MARKET NOTICE
The Forecast LOR1 condition in the Qld region advised in AEMO Electricity Market Notice No. 90800 is cancelled at 1700 hrs 20/09/2021.
Manager NEM Real Time Operations
The Forecast LOR1 condition in the Qld region advised in AEMO Electricity Market Notice No. 90800 is cancelled at 1700 hrs 20/09/2021.
Manager NEM Real Time Operations
90814SETTLEMENTS RESIDUE20/09/2021 05:30:27 PM
[EventId:202109201730_NRM_QLD1_NSW1_started] NEGRES CONSTRAINT NRM_QLD1_NSW1 started operating from 20 September 2021 17:30
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 1730 hrs on 20 September 2021
ACTUAL NEGATIVE SETTLEMENT RESIDUES - QLD to NSW - 20 September 2021.
Electricity Market outcomes have resulted in the accumulation of negative settlement residues that have exceeded the allowable negative residue threshold for the QLD to NSW directional interconnector.
The negative residue constraint set NRM_QLD1_NSW1 commenced operating from 1730 hrs on 20 September 2021.
This constraint set contains an equation with the following interconnectors on the LHS:
N-Q-MNSP1
NSW1-QLD1
The RHS of the constraint equation may be adjusted to manage residues.
This is an AEMO autogenerated Market Notice.
Issued by Australian Energy Market Operator Ltd at 1730 hrs on 20 September 2021
ACTUAL NEGATIVE SETTLEMENT RESIDUES - QLD to NSW - 20 September 2021.
Electricity Market outcomes have resulted in the accumulation of negative settlement residues that have exceeded the allowable negative residue threshold for the QLD to NSW directional interconnector.
The negative residue constraint set NRM_QLD1_NSW1 commenced operating from 1730 hrs on 20 September 2021.
This constraint set contains an equation with the following interconnectors on the LHS:
N-Q-MNSP1
NSW1-QLD1
The RHS of the constraint equation may be adjusted to manage residues.
This is an AEMO autogenerated Market Notice.
90812MARKET SYSTEMS20/09/2021 05:06:54 PM
CHG0070186 | Completed | Pre-Production | As part of the r40 Schema upgrade for GSH participants the following components are being deployed to pre-production environment to allow participants to recertify in advance of the production deployment: AGNLGWY
Change Number: CHG0070186
Notification issued to: Market Notice
Notification Type: Completed
Change Type: Normal
Service/Component: Gas Hub
Change Title: As part of the r40 Schema upgrade for GSH participants the following components are being deployed to pre-production environment to allow participants to recertify in advance of the production deployment: AGNLGWY
Support Information: Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600.
Notification issued to: Market Notice
Notification Type: Completed
Change Type: Normal
Service/Component: Gas Hub
Change Title: As part of the r40 Schema upgrade for GSH participants the following components are being deployed to pre-production environment to allow participants to recertify in advance of the production deployment: AGNLGWY
Support Information: Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600.
90811MARKET SYSTEMS20/09/2021 05:01:01 PM
CHG0069318 | Completed | Production | Please note the X.509 digital public certificate securing traffic from the following endpoints is being renewed
Change Number: CHG0069318
Notification issued to: Market Notice
Notification Type: Completed
Change Type: Normal
Service/Component: MSATS - Business to Business Data Exchange
Change Title: Please note the X.509 digital public certificate securing traffic from the following endpoints is being renewed
Support Information: Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600.
Notification issued to: Market Notice
Notification Type: Completed
Change Type: Normal
Service/Component: MSATS - Business to Business Data Exchange
Change Title: Please note the X.509 digital public certificate securing traffic from the following endpoints is being renewed
Support Information: Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600.
90809RECLASSIFY CONTINGENCY20/09/2021 04:39:07 PM
Cancellation of a Non-Credible Contingency Event: Eildon PS - Mt Beauty No.1 220 kV line and Eildon PS - Mt Beauty No.2 220 kV 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: Eildon PS - Mt Beauty No.1 220 kV and Eildon PS - Mt Beauty No.2 220 kV
Cancellation time: 20/09/2021 16:39
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 90804
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: Eildon PS - Mt Beauty No.1 220 kV and Eildon PS - Mt Beauty No.2 220 kV
Cancellation time: 20/09/2021 16:39
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 90804
Auto-generated on behalf of Manager NEM Real Time Operations
90804RECLASSIFY CONTINGENCY20/09/2021 03:34:30 PM
Reclassification of a Non-Credible Contingency Event: Eildon PS - Mt Beauty No.1 220 kV line and Eildon PS - Mt Beauty No.2 220 kV 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: Eildon PS - Mt Beauty No.1 220 kV and Eildon PS - Mt Beauty No.2 220 kV
Duration: 20/09/2021 15:34 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: VIC1
Lines: Eildon PS - Mt Beauty No.1 220 kV and Eildon PS - Mt Beauty No.2 220 kV
Duration: 20/09/2021 15:34 until further notice
Constraint set(s) invoked:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations
90803RECLASSIFY CONTINGENCY20/09/2021 02:54:05 PM
Cancellation of a Non-Credible Contingency Event: Dederang - Glenrowan No.1 & No.3 220 kV Lines line and Numurkah Solar Farm 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: Dederang - Glenrowan No.1 & No.3 220 kV Lines and Numurkah Solar Farm
Cancellation time: 20/09/2021 14:54
Constraint set(s) revoked:
V-NIL_DDGN_NSF_N-2 Constraint set contains the following interconnector(s) on the left hand side:
V-S-MNSP1
VIC1-NSW1
Refer AEMO Electricity Market Notice 90801
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: Dederang - Glenrowan No.1 & No.3 220 kV Lines and Numurkah Solar Farm
Cancellation time: 20/09/2021 14:54
Constraint set(s) revoked:
V-NIL_DDGN_NSF_N-2 Constraint set contains the following interconnector(s) on the left hand side:
V-S-MNSP1
VIC1-NSW1
Refer AEMO Electricity Market Notice 90801
Auto-generated on behalf of Manager NEM Real Time Operations
90802RESERVE NOTICE21/09/2021 01:59:25 PM
RESERVE NOTICE MT PASA PUBLICATION 21 September 2021
The MTPASA result published on 21 September 2021 identifies no Low Reserve Conditions.
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 89218 published on 14 September 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
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 89218 published on 14 September 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