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90955POWER SYSTEM EVENTS22/09/2021 02:38:44 PM
Update - Non-credible contingency event - VIC region - 22/09/2021
AEMO ELECTRICITY MARKET NOTICE
Update - Non-credible contingency event - VIC region - 22/09/2021
At 0916 hrs the Springvale No. 1 220 kV busbar tripped.
Refer AEMO ELECTRICITY MARKET NOTICE MN90937 and MN90939
At 0925 hrs the Springvale No. 1 220 kV busbar was returned to service.
Further investigation has identified that this was a credible contingency event.
Manager NEM Real Time Operations
Update - Non-credible contingency event - VIC region - 22/09/2021
At 0916 hrs the Springvale No. 1 220 kV busbar tripped.
Refer AEMO ELECTRICITY MARKET NOTICE MN90937 and MN90939
At 0925 hrs the Springvale No. 1 220 kV busbar was returned to service.
Further investigation has identified that this was a credible contingency event.
Manager NEM Real Time Operations
90954CONSTRAINTS22/09/2021 03:08:54 PM
Update to system normal constraint equation in NSW for voltage collapse at Darlington Point
AEMO ELECTRICITY MARKET NOTICE
Refer to Market Notice 75618
TransGrid has advised AEMO on a revision to the Darlington Point to Wagga (63) 330 kV line voltage collapse limit due to upcoming connection of Hillston solar farm.
AEMO has reviewed the limit advice and will update the following constraint equation at 1000 hrs Thursday 23rd September 2021:
N^^N_NIL_2
The limit is for pre-contingent flow on 63 line. The constraint equation includes generators in south-west NSW and north-west Victoria on the left-hand side as well as Murraylink.
Mahsa Ahmadi
AEMO Operations
Refer to Market Notice 75618
TransGrid has advised AEMO on a revision to the Darlington Point to Wagga (63) 330 kV line voltage collapse limit due to upcoming connection of Hillston solar farm.
AEMO has reviewed the limit advice and will update the following constraint equation at 1000 hrs Thursday 23rd September 2021:
N^^N_NIL_2
The limit is for pre-contingent flow on 63 line. The constraint equation includes generators in south-west NSW and north-west Victoria on the left-hand side as well as Murraylink.
Mahsa Ahmadi
AEMO Operations
90953MARKET INTERVENTION22/09/2021 02:15:58 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 currently expected to be synchronised in SA from 0130 hrs 23/09/2021 to 0400 hrs 24/09/2021 will be inadequate to maintain sufficient system strength in SA and hence a secure operating state.
AEMO estimates that, in the absence of sufficient market response by 1700 hrs 22/09/2021, 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 currently expected to be synchronised in SA from 0130 hrs 23/09/2021 to 0400 hrs 24/09/2021 will be inadequate to maintain sufficient system strength in SA and hence a secure operating state.
AEMO estimates that, in the absence of sufficient market response by 1700 hrs 22/09/2021, 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
90952MARKET SYSTEMS22/09/2021 01:00:00 PM
CHG0070122 : MSATS and EMDM - 5MS and Customer Switching Deployment
Change Number: CHG0070122
Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: MSATS - Consumer Administration and Transfer Solution(CATS)
Change Title: MSATS and EMDM - 5MS and Customer Switching Deployment
Change Start Date & Time: 30/09/2021 18:30:00 AEST
Change End Date & Time: 01/10/2021 18:00:00 AEST
Outage Start Date & Time: 30/09/2021 19:30:00 AEST
Outage End Date & Time: 30/09/2021 23:30:00 AEST
Environment: Production
Participant Impact and Requirements:
5 Minute Rule and Customer Switching - MSATS and EMDM Production Deployment
Users will not be able to access MSATS during the outage period.
Meter data processing and RM reports will not be available during the outage period.
User Rights Management (URM) will continue to operate, however the administration screens will not be accessible.
MSATS B2B Transactions and B2B MSATS Screens will be unavailable during this outage
NMI Discovery will not be available during the outage period.
Support Information:
Report any impacts to the AEMO Information and Support Hub or call 1300 236 600.Please refer to https://aemo.service-now.com/participantportal?id=pp_services_status for any planned/unplanned maintenance activities.
Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: MSATS - Consumer Administration and Transfer Solution(CATS)
Change Title: MSATS and EMDM - 5MS and Customer Switching Deployment
Change Start Date & Time: 30/09/2021 18:30:00 AEST
Change End Date & Time: 01/10/2021 18:00:00 AEST
Outage Start Date & Time: 30/09/2021 19:30:00 AEST
Outage End Date & Time: 30/09/2021 23:30:00 AEST
Environment: Production
Participant Impact and Requirements:
5 Minute Rule and Customer Switching - MSATS and EMDM Production Deployment
Users will not be able to access MSATS during the outage period.
Meter data processing and RM reports will not be available during the outage period.
User Rights Management (URM) will continue to operate, however the administration screens will not be accessible.
MSATS B2B Transactions and B2B MSATS Screens will be unavailable during this outage
NMI Discovery will not be available during the outage period.
Support Information:
Report any impacts to the AEMO Information and Support Hub or call 1300 236 600.Please refer to https://aemo.service-now.com/participantportal?id=pp_services_status for any planned/unplanned maintenance activities.
90951RECLASSIFY CONTINGENCY22/09/2021 01:06:18 PM
Update - Non-credible contingency event - SA region - 22/09/2021
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - SA region - 22/09/2021
Refer AEMO ELECTRICITY MARKET NOTICE MN90950
The cause of this non credible contingency event is not known at this stage.
AEMO is not satisfied that this non credible event is unlikely to re-occur.
AEMO has therefore reclassified this event as a credible contingency event until further notice.
Region: SA
Elements: The No. 1 and No. 2 275 kV Static Var Compensator (SVC) at South East Substation.
Duration: 22/09/2021 1229 hrs until further notice.
The following constraint set was invoked at 1145 hrs.
S-X_SEVC2+PAVC
The constraint sets contain equations with the following interconnector on the LHS:
V-S-MNSP1
V-SA
Refer to AEMO Network Outage Scheduler (NOS) for further details.
Manager NEM Real Time Operations
Update - Non-credible contingency event - SA region - 22/09/2021
Refer AEMO ELECTRICITY MARKET NOTICE MN90950
The cause of this non credible contingency event is not known at this stage.
AEMO is not satisfied that this non credible event is unlikely to re-occur.
AEMO has therefore reclassified this event as a credible contingency event until further notice.
Region: SA
Elements: The No. 1 and No. 2 275 kV Static Var Compensator (SVC) at South East Substation.
Duration: 22/09/2021 1229 hrs until further notice.
The following constraint set was invoked at 1145 hrs.
S-X_SEVC2+PAVC
The constraint sets contain equations with the following interconnector on the LHS:
V-S-MNSP1
V-SA
Refer to AEMO Network Outage Scheduler (NOS) for further details.
Manager NEM Real Time Operations
90950POWER SYSTEM EVENTS22/09/2021 12:01:24 PM
Non-credible contingency event - SA region - 22/09/2021
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - SA region - 22/09/2021
At 1134 hrs the No. 1 and No. 2 275 kV Static Var Compensator (SVC) at South East Substation 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 is not known at this stage.
The following constraint set was invoked at 1145 hrs
S-X_SEVC2+PAVC
The constraint sets contain equations with the following interconnector on the LHS:
V-S-MNSP1
V-SA
Refer to AEMO Network Outage Scheduler (NOS) for further details.
Manager NEM Real Time Operations
Non-credible contingency event - SA region - 22/09/2021
At 1134 hrs the No. 1 and No. 2 275 kV Static Var Compensator (SVC) at South East Substation 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 is not known at this stage.
The following constraint set was invoked at 1145 hrs
S-X_SEVC2+PAVC
The constraint sets contain equations with the following interconnector on the LHS:
V-S-MNSP1
V-SA
Refer to AEMO Network Outage Scheduler (NOS) for further details.
Manager NEM Real Time Operations
90949MARKET SYSTEMS22/09/2021 11:34:25 AM
CHG0069807 | Completed | Production | The next version of the 5MS Retail MSATS solution will be deployed to the AEMO Production environment
Change Number: CHG0069807
Notification issued to: Market Notice
Notification Type: Completed
Change Type: Normal
Service/Component: MSATS - Consumer Administration and Transfer Solution(CATS)
Change Title: The next version of the 5MS Retail MSATS solution will be deployed to the AEMO Production environment which requires an Outage as specified in this notice.
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 - Consumer Administration and Transfer Solution(CATS)
Change Title: The next version of the 5MS Retail MSATS solution will be deployed to the AEMO Production environment which requires an Outage as specified in this notice.
Support Information: Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600.
90948GENERAL NOTICE22/09/2021 11:41:06 AM
AEMO is aware of the earthquake at 0915 hrs in the VIC region.
AEMO ELECTRICITY MARKET NOTICE.
AEMO is aware of todays earthquake at 0915 hrs.
There has been no major loss of generation in the NEM.
There has been no major impact on transmission other than the non-credible event referenced in market notice(s) 90937 and 90939 and the trip of the Mount Beauty to Mackay tee Bogong 220 kV transmission line which remains out of service.
AEMO is continuing to monitor the situation in regard to aftershocks.
Manager NEM Real Time Operations
AEMO is aware of todays earthquake at 0915 hrs.
There has been no major loss of generation in the NEM.
There has been no major impact on transmission other than the non-credible event referenced in market notice(s) 90937 and 90939 and the trip of the Mount Beauty to Mackay tee Bogong 220 kV transmission line which remains out of service.
AEMO is continuing to monitor the situation in regard to aftershocks.
Manager NEM Real Time Operations
90947MARKET SYSTEMS22/09/2021 10:36:30 AM
CHG0070087 | Production | EMMS Production Systems will be transferred to the alternative site to support new data interchange FTP infrastructure
Change Number: CHG0070087
Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: Electricity Market Management System
Change Title: EMMS Production Systems will be transferred to the alternative site to support new data interchange FTP infrastructure
Change Start Date & Time: 27/09/2021 09:00:00 AEST
Change End Date & Time: 28/09/2021 15:00:00 AEST
Outage Start Date & Time:
Outage End Date & Time:
Environment: Production
Participant Impact and Requirements: The maintenance activity is not expected to have any impact however delays to Dispatch cycles and bid submission are possible during the system transfer and cutover to new data interchange FTP infrastructure.
Support Information:
Report any impacts to the AEMO Information and Support Hub or call 1300 236 600.
Please refer to https://aemo.service-now.com/participantportal?
id=pp_services_status for any planned/unplanned maintenance activities .
Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: Electricity Market Management System
Change Title: EMMS Production Systems will be transferred to the alternative site to support new data interchange FTP infrastructure
Change Start Date & Time: 27/09/2021 09:00:00 AEST
Change End Date & Time: 28/09/2021 15:00:00 AEST
Outage Start Date & Time:
Outage End Date & Time:
Environment: Production
Participant Impact and Requirements: The maintenance activity is not expected to have any impact however delays to Dispatch cycles and bid submission are possible during the system transfer and cutover to new data interchange FTP infrastructure.
Support Information:
Report any impacts to the AEMO Information and Support Hub or call 1300 236 600.
Please refer to https://aemo.service-now.com/participantportal?
id=pp_services_status for any planned/unplanned maintenance activities .