Filter by:
Filter by category
Filter by Date
From
To
75583MARKET SYSTEMS06/05/2020 12:47:37 PM
CHG0058814: Planned System Outage to Declared Wholesale Gas Market Production Systems
Market Notice
Change Number: CHG0058814
Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: Declared Wholesale Gas Market
Change Title: Planned System Outage to Declared Wholesale Gas Market Production Systems
Change Start Date & Time: 12/05/2020 17:30:00 AEST
Change End Date & Time: 12/05/2020 21:30:00 AEST
Outage Start Date & Time: 12/05/2020 18:00:00 AEST
Outage End Date & Time: 12/05/2020 20:30:00 AEST
Change Description:
Maintenance is to be performed on the Production Declared Wholesale Gas Market Systems to increase the reliability, security and stability. During the maintenance, there will be an outage as per the times mentioned.
Environment: Production
Participant Impact and Requirements:
The following impacts are expected during the Site transfer:
- All access to the Declared Wholesale Gas Market Production Systems will be unavailable.
- All access to the MIBB for the NSW/ACT Retail Gas Market Participants will be unavailable.
Support Information:
Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600
Change Number: CHG0058814
Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: Declared Wholesale Gas Market
Change Title: Planned System Outage to Declared Wholesale Gas Market Production Systems
Change Start Date & Time: 12/05/2020 17:30:00 AEST
Change End Date & Time: 12/05/2020 21:30:00 AEST
Outage Start Date & Time: 12/05/2020 18:00:00 AEST
Outage End Date & Time: 12/05/2020 20:30:00 AEST
Change Description:
Maintenance is to be performed on the Production Declared Wholesale Gas Market Systems to increase the reliability, security and stability. During the maintenance, there will be an outage as per the times mentioned.
Environment: Production
Participant Impact and Requirements:
The following impacts are expected during the Site transfer:
- All access to the Declared Wholesale Gas Market Production Systems will be unavailable.
- All access to the MIBB for the NSW/ACT Retail Gas Market Participants will be unavailable.
Support Information:
Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600
75582INTER-REGIONAL TRANSFER06/05/2020 11:05:34 AM
Inter-regional transfer limit variation - Wagga - Wagga Nth (9R5) 132 kV Line - NSW region - 06/05/2020
AEMO ELECTRICITY MARKET NOTICE
Inter-regional transfer limit variation - Wagga - Wagga Nth (9R5) 132 kv Line - NSW region - 06/05/2020
A planned outage of Wagga - Wagga Nth (9R5) 132 kV Line in the NSW region was scheduled from 0900 hrs 06/05/2020 to 1900 hrs 06/05/2020
The outage conditions has been modified.
The following constraint set(s) invoked at 1015 hrs 06/05/2020
N-X_WGYS_132_OPEN
This constraint set contains equations with the following interconnectors on the LHS.
VIC1- NSW1
V-S-MNSP1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
Inter-regional transfer limit variation - Wagga - Wagga Nth (9R5) 132 kv Line - NSW region - 06/05/2020
A planned outage of Wagga - Wagga Nth (9R5) 132 kV Line in the NSW region was scheduled from 0900 hrs 06/05/2020 to 1900 hrs 06/05/2020
The outage conditions has been modified.
The following constraint set(s) invoked at 1015 hrs 06/05/2020
N-X_WGYS_132_OPEN
This constraint set contains equations with the following interconnectors on the LHS.
VIC1- NSW1
V-S-MNSP1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
75580RECLASSIFY CONTINGENCY06/05/2020 01:54:10 AM
Cancellation of a Non-Credible Contingency Event: Lindisfarne - Mornington No.1 TEE line and Lindisfarne - Mornington No.2 TEE line in TAS1 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: TAS1
Lines: Lindisfarne - Mornington No.1 TEE and Lindisfarne - Mornington No.2 TEE
Cancellation time: 06/05/2020 01:54
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 75579
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: TAS1
Lines: Lindisfarne - Mornington No.1 TEE and Lindisfarne - Mornington No.2 TEE
Cancellation time: 06/05/2020 01:54
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 75579
Auto-generated on behalf of Manager NEM Real Time Operations
75579RECLASSIFY CONTINGENCY06/05/2020 12:52:42 AM
Reclassification of a Non-Credible Contingency Event: Lindisfarne - Mornington No.1 TEE line and Lindisfarne - Mornington No.2 TEE line in TAS1 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: TAS1
Lines: Lindisfarne - Mornington No.1 TEE and Lindisfarne - Mornington No.2 TEE
Duration: 06/05/2020 00:52 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: TAS1
Lines: Lindisfarne - Mornington No.1 TEE and Lindisfarne - Mornington No.2 TEE
Duration: 06/05/2020 00:52 until further notice
Constraint set(s) invoked:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations
75578MARKET INTERVENTION05/05/2020 03:04:01 PM
Direction - SA region - 05/05/2020
AEMO ELECTRICITY MARKET NOTICE.
Direction - SA region - 05/05/2020
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 1505 hrs on 05/05/2020.
Intervention pricing does not apply to this AEMO intervention event.
Manager NEM Real Time Operations
Direction - SA region - 05/05/2020
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 1505 hrs on 05/05/2020.
Intervention pricing does not apply to this AEMO intervention event.
Manager NEM Real Time Operations
75576MARKET INTERVENTION05/05/2020 12:59:21 PM
Update - Possible intervention to manage power system security in South Australia (SA) Region
AEMO ELECTRICITY MARKET NOTICE
Update - Possible intervention to manage power system security in South Australia (SA) Region
Refer AEMO Electricity Market Notice 75572
The synchronous generating units expected to be synchronised in SA from 2330 hrs 05/05/2020 to 0600 hrs 06/05/2020 in Pre-dispatch published at 1230 hrs 05/05/2020 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 1500 hrs 05/05/2020, 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
Update - Possible intervention to manage power system security in South Australia (SA) Region
Refer AEMO Electricity Market Notice 75572
The synchronous generating units expected to be synchronised in SA from 2330 hrs 05/05/2020 to 0600 hrs 06/05/2020 in Pre-dispatch published at 1230 hrs 05/05/2020 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 1500 hrs 05/05/2020, 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
75574RESERVE NOTICE05/05/2020 11:53:54 AM
RESERVE NOTICE MT PASA PUBLICATION 05 May 2020
The MTPASA result published on 05 May 2020 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 75488 published on 28 April 2020.
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 75488 published on 28 April 2020.
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
75573MARKET INTERVENTION04/05/2020 10:11:51 PM
Correction - Direction - SA region - 04/05/2020
AEMO ELECTRICITY MARKET NOTICE.
Correction - Direction - SA region - 04/05/2020
Refer AEMO Electricity Market Notice 75571
No direction was issued in SA region.
Manager NEM Real Time Operations
Correction - Direction - SA region - 04/05/2020
Refer AEMO Electricity Market Notice 75571
No direction was issued in SA region.
Manager NEM Real Time Operations
75572MARKET INTERVENTION04/05/2020 09:59:31 PM
Update - Possible intervention to manage power system security in South Australia (SA) Region
AEMO ELECTRICITY MARKET NOTICE
Update - Possible intervention to manage power system security in South Australia (SA) Region
Refer AEMO Electricity Market Notice 75567
The synchronous generating units expected to be synchronised in SA from 2330 hrs 05/05/2020 to 0400 hrs 06/05/2020 in Pre-dispatch published at 1630 hrs 04/05/2020 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 1500 hrs 05/05/2020, 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
Update - Possible intervention to manage power system security in South Australia (SA) Region
Refer AEMO Electricity Market Notice 75567
The synchronous generating units expected to be synchronised in SA from 2330 hrs 05/05/2020 to 0400 hrs 06/05/2020 in Pre-dispatch published at 1630 hrs 04/05/2020 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 1500 hrs 05/05/2020, 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