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84860PRICES SUBJECT TO REVIEW30/04/2021 01:30:14 AM
[EventId:202104300135_review] Prices for interval 30-Apr-2021 01:35 are subject to review
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 0130 hrs on 30 April 2021
PRICES ARE SUBJECT TO REVIEW for dispatch interval 30-Apr-2021 01:35.
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 0130 hrs on 30 April 2021
PRICES ARE SUBJECT TO REVIEW for dispatch interval 30-Apr-2021 01:35.
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.
84859MARKET INTERVENTION29/04/2021 06:28:03 PM
Possible intervention to manage power system security in South Australia (SA) Region
AEMO ELECTRICITY MARKET NOTICE
Possible intervention to manage power system security in South Australia (SA) Region
The combination of synchronous generating units currently expected to be synchronised in SA from 0000 hrs 01/05/2021 will not provide sufficient system strength in SA to maintain the power system in a secure operating state.
In the absence of sufficient market response AEMO may need to intervene by issuing a direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised from 0000 hrs 01/05/2021 to maintain power system security in SA. Refer to current Transfer Limit Advice for SA system strength on the AEMO website.
If necessary, AEMO will estimate and publish the latest time at which AEMO would need to intervene after the 1230 hrs Pre-dispatch run on the 30/04/2021.
Manager NEM Real Time Operations
Possible intervention to manage power system security in South Australia (SA) Region
The combination of synchronous generating units currently expected to be synchronised in SA from 0000 hrs 01/05/2021 will not provide sufficient system strength in SA to maintain the power system in a secure operating state.
In the absence of sufficient market response AEMO may need to intervene by issuing a direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised from 0000 hrs 01/05/2021 to maintain power system security in SA. Refer to current Transfer Limit Advice for SA system strength on the AEMO website.
If necessary, AEMO will estimate and publish the latest time at which AEMO would need to intervene after the 1230 hrs Pre-dispatch run on the 30/04/2021.
Manager NEM Real Time Operations
84858MARKET INTERVENTION29/04/2021 05:57:38 PM
Direction - SA region 29/04/2021
AEMO ELECTRICITY MARKET NOTICE.
Direction - SA region 29/04/2021
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 18:05 on 29/04/2021.
Intervention pricing does not apply to this AEMO intervention event.
Manager NEM Real Time Operations
Direction - SA region 29/04/2021
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 18:05 on 29/04/2021.
Intervention pricing does not apply to this AEMO intervention event.
Manager NEM Real Time Operations
84856MARKET INTERVENTION29/04/2021 02:33:11 PM
Possible intervention to manage power system security in South Australia (SA) Region
AEMO ELECTRICITY MARKET NOTICE
Possible intervention to manage power system security in South Australia (SA) Region
The synchronous generating units expected to be synchronised in SA from 0930 hrs 30/04/2021 to 1500 hrs 30/04/2021 in Pre-dispatch published at 1400 hrs 29/04/2021 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 1800 hrs 29/04/2021, 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 South Australia (SA) Region
The synchronous generating units expected to be synchronised in SA from 0930 hrs 30/04/2021 to 1500 hrs 30/04/2021 in Pre-dispatch published at 1400 hrs 29/04/2021 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 1800 hrs 29/04/2021, 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
84855RECLASSIFY CONTINGENCY28/04/2021 04:43:21 PM
Cancellation - Reclassification of a Non-Credible Event as a Credible Contingency Event due to demolition works near high voltage switchyard - Vic region
Cancellation - Reclassification of a Non-Credible Event as a Credible Contingency Event due to demolition works near high voltage switchyard - Vic region
AEMO no longer considers the simultaneous trip of the following circuits to be likely and reasonably possible. Accordingly AEMO has cancelled the reclassification as a credible contingency event.
Lines HWPS - YPS No.1 and No.2 220 kV lines
Cancellation time: 1635 hrs 28/04/2021
Constraint set revoked:
V-HWYP_R_N-2
Refer AEMO Electricity Market Notice 84854
Manager NEM Real Time Operations
AEMO no longer considers the simultaneous trip of the following circuits to be likely and reasonably possible. Accordingly AEMO has cancelled the reclassification as a credible contingency event.
Lines HWPS - YPS No.1 and No.2 220 kV lines
Cancellation time: 1635 hrs 28/04/2021
Constraint set revoked:
V-HWYP_R_N-2
Refer AEMO Electricity Market Notice 84854
Manager NEM Real Time Operations
84854RECLASSIFY CONTINGENCY28/04/2021 01:53:19 PM
Reclassification of a Non-Credible Event as a Credible Contingency Event due to demolition works near high voltage switchyard - Vic region
Reclassification of a Non-Credible Event as a Credible Contingency Event due to demolition works near high voltage switchyard - Vic region
Hazelwood rehabilitation works today involve the demolition of boiler house 3 at Hazelwood Power Station. There is an increased risk of the simultaneous trip of the Hazelwood - Yallourn No 1 and 2 220 kV lines.
Lines HWPS - YPS No.1 and No.2 220 kV lines
Constraint: V-HWYP_R_N-2
Constraint set invoked from 1400 hrs to 1700 hrs 28/04/2021.
Manager NEM Real Time Operations
Hazelwood rehabilitation works today involve the demolition of boiler house 3 at Hazelwood Power Station. There is an increased risk of the simultaneous trip of the Hazelwood - Yallourn No 1 and 2 220 kV lines.
Lines HWPS - YPS No.1 and No.2 220 kV lines
Constraint: V-HWYP_R_N-2
Constraint set invoked from 1400 hrs to 1700 hrs 28/04/2021.
Manager NEM Real Time Operations
84853MARKET SYSTEMS27/04/2021 05:30:49 PM
AEMO Help Desk Bulletin No. 2677 : CHG0064109 : Telco Outage Notification - Telstra Brisbane Indial (07 3347 XXXX-XXXX)
Change Number: CHG0064109
Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: Voice Systems
Change Title: Telco Outage Notification - TELSTRA Brisbane Indial (07 3347 XXXX-XXXX) (Telstra ref: 3392884)
Change Start Date & Time: 03/05/2021 01:00:00 AEST
Change End Date & Time: 03/05/2021 06:00:00 AEST
Outage Start Date & Time: 03/05/2021 01:00:00 AEST
Outage End Date & Time: 03/05/2021 06:00:00 AEST
Change Description:
Telco Outage Notification - Telstra Brisbane Indial (07 3347 XXXX-XXXX)
Environment: Production
Participant Impact and Requirements:
Outage Duration:
3 x 15-minutes during the window
Impacts:
Reduced redundancy for Inbound and Outbound Calls (automatically re-routed via Norwest).
Impacts:
Ongoing calls in Brisbane, via the number range 07 3347 XXXX-XXXX, at the time when Telstra initiates the 3 x 15-minute interruptions, will be dropped.
All other subsequent calls will be routed via Norwest.
The Control room BT Voice systems will remain unaffected.
User Requirements:
Nil. Awareness of this outage only.
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: Initial
Change Type: Normal
Service/ Component: Voice Systems
Change Title: Telco Outage Notification - TELSTRA Brisbane Indial (07 3347 XXXX-XXXX) (Telstra ref: 3392884)
Change Start Date & Time: 03/05/2021 01:00:00 AEST
Change End Date & Time: 03/05/2021 06:00:00 AEST
Outage Start Date & Time: 03/05/2021 01:00:00 AEST
Outage End Date & Time: 03/05/2021 06:00:00 AEST
Change Description:
Telco Outage Notification - Telstra Brisbane Indial (07 3347 XXXX-XXXX)
Environment: Production
Participant Impact and Requirements:
Outage Duration:
3 x 15-minutes during the window
Impacts:
Reduced redundancy for Inbound and Outbound Calls (automatically re-routed via Norwest).
Impacts:
Ongoing calls in Brisbane, via the number range 07 3347 XXXX-XXXX, at the time when Telstra initiates the 3 x 15-minute interruptions, will be dropped.
All other subsequent calls will be routed via Norwest.
The Control room BT Voice systems will remain unaffected.
User Requirements:
Nil. Awareness of this outage only.
Support Information:
Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600.
84852RESERVE NOTICE27/04/2021 02:57:48 PM
RESERVE NOTICE MT PASA PUBLICATION 27 April 2021
The MTPASA result published on 27 April 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 84446 published on 20th April 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 84446 published on 20th April 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
84851PRICES UNCHANGED27/04/2021 12:32:33 PM
[EventId:202104271150_confirmed] Prices for interval 27-Apr-2021 11:50 are now confirmed
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 1210 hrs on 27 April 2021
PRICES ARE NOW CONFIRMED for dispatch interval 27-Apr-2021 11:50.
In accordance with Market Notice 84837 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.
Issued by Australian Energy Market Operator Ltd at 1210 hrs on 27 April 2021
PRICES ARE NOW CONFIRMED for dispatch interval 27-Apr-2021 11:50.
In accordance with Market Notice 84837 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.