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75591POWER SYSTEM EVENTS06/05/2020 04:04:21 PM
Non-credible contingency event - Qld Region - 06/05/2020
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - Qld Region - 06/05/2020
At 1510 hrs the T26 Bileola No 2 132 kV Bus tripped.
AEMO did not instruct load shedding.
AEMO has not been advised of any disconnection of bulk electrical load.
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.
Manager NEM Real Time Operations
Non-credible contingency event - Qld Region - 06/05/2020
At 1510 hrs the T26 Bileola No 2 132 kV Bus tripped.
AEMO did not instruct load shedding.
AEMO has not been advised of any disconnection of bulk electrical load.
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.
Manager NEM Real Time Operations
75590MARKET INTERVENTION06/05/2020 06:41:58 PM
Direction - SA region - 06/05/2020
AEMO ELECTRICITY MARKET NOTICE.
Direction - SA region - 06/05/2020
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 1705 hrs on 06/05/2020.
Intervention pricing does not apply to this AEMO intervention event.
Manager NEM Real Time Operations
Direction - SA region - 06/05/2020
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 1705 hrs on 06/05/2020.
Intervention pricing does not apply to this AEMO intervention event.
Manager NEM Real Time Operations
75585MARKET SYSTEMS06/05/2020 12:53:28 PM
CHG0059193: Pre production MSATS B2B maintenance activity
Market Notice
Change Number: CHG0059193
Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: MSATS - Business to Business data exchange
Change Title: Pre production MSATS B2B maintenance activity
Change Start Date & Time: 08/05/2020 09:30:00 AEST
Change End Date & Time: 14/05/2020 16:30:47 AEST
Outage Start Date & Time:
Outage End Date & Time:
Change Description:
Please be aware that AEMO will be performing maintenance activities in Electricity & Gas Retail B2B pre-production environment.
Environment: Pre-Production
Participant Impact and Requirements:
Please be aware of this planned maintenance activity and potential for intermittently degraded response times if you are using the pre-production B2B systems. This may mean an intermittent degradation in B2B responses during the implementation window.
Support Information:
Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600.
Change Number: CHG0059193
Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: MSATS - Business to Business data exchange
Change Title: Pre production MSATS B2B maintenance activity
Change Start Date & Time: 08/05/2020 09:30:00 AEST
Change End Date & Time: 14/05/2020 16:30:47 AEST
Outage Start Date & Time:
Outage End Date & Time:
Change Description:
Please be aware that AEMO will be performing maintenance activities in Electricity & Gas Retail B2B pre-production environment.
Environment: Pre-Production
Participant Impact and Requirements:
Please be aware of this planned maintenance activity and potential for intermittently degraded response times if you are using the pre-production B2B systems. This may mean an intermittent degradation in B2B responses during the implementation window.
Support Information:
Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600.
75584MARKET INTERVENTION06/05/2020 02:27:25 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 0100 hrs 07/05/2020 to 0400 hrs 08/05/2020 in Pre-dispatch published at 1400 hrs 06/05/2020 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 1700 hrs 06/05/2020, 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
Possible intervention to manage power system security in South Australia (SA) Region
The synchronous generating units expected to be synchronised in SA from 0100 hrs 07/05/2020 to 0400 hrs 08/05/2020 in Pre-dispatch published at 1400 hrs 06/05/2020 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 1700 hrs 06/05/2020, 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
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