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82365SETTLEMENTS RESIDUE25/01/2021 12:40:29 PM
[EventId:202101251240_NRM_VIC1_SA1_started] NEGRES CONSTRAINT NRM_VIC1_SA1 started operating from 25 January 2021 12:40
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 1240 hrs on 25 January 2021
ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to SA - 25 January 2021.
Electricity Market outcomes have resulted in the accumulation of negative settlement residues that have exceeded the allowable negative residue threshold for the VIC to SA directional interconnector.
The negative residue constraint set NRM_VIC1_SA1 commenced operating from 1240 hrs on 25 January 2021.
This constraint set contains an equation with the following interconnectors on the LHS:
V-S-MNSP1
V-SA
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 1240 hrs on 25 January 2021
ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to SA - 25 January 2021.
Electricity Market outcomes have resulted in the accumulation of negative settlement residues that have exceeded the allowable negative residue threshold for the VIC to SA directional interconnector.
The negative residue constraint set NRM_VIC1_SA1 commenced operating from 1240 hrs on 25 January 2021.
This constraint set contains an equation with the following interconnectors on the LHS:
V-S-MNSP1
V-SA
The RHS of the constraint equation may be adjusted to manage residues.
This is an AEMO autogenerated Market Notice.
82364RECLASSIFY CONTINGENCY25/01/2021 12:04:25 PM
Reclassification of a Non-Credible Contingency Event: Farrell-John Butters line and Farrell-Rosebery-Newton-Queenstown 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: Farrell-John Butters and Farrell-Rosebery-Newton-Queenstown
Duration: 25/01/2021 12:04 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: Farrell-John Butters and Farrell-Rosebery-Newton-Queenstown
Duration: 25/01/2021 12:04 until further notice
Constraint set(s) invoked:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations
82363INTER-REGIONAL TRANSFER25/01/2021 12:09:08 PM
Update - Inter-regional transfer limit variation - SA Region - 25/01/2021
AEMO ELECTRICITY MARKET NOTICE
Update - Inter-regional transfer limit variation - SA Region - 25/01/2021
Refer AEMO Electricity Market Notice 82358 and 82348
To manage Power System Security in the SA Region:
Constraint set I-SV_100 revoked at 1200 hrs
Constraint set S-CGTB1 extended until 0400 hrs 27/01/2021
These constraints have the following interconnector on the LHS
VIC1-SA1
Refer to AEMO Network Outage Scheduler for further details.
Manager NEM Real Time Operations
Update - Inter-regional transfer limit variation - SA Region - 25/01/2021
Refer AEMO Electricity Market Notice 82358 and 82348
To manage Power System Security in the SA Region:
Constraint set I-SV_100 revoked at 1200 hrs
Constraint set S-CGTB1 extended until 0400 hrs 27/01/2021
These constraints have the following interconnector on the LHS
VIC1-SA1
Refer to AEMO Network Outage Scheduler for further details.
Manager NEM Real Time Operations
82361RECLASSIFY CONTINGENCY25/01/2021 11:48:30 AM
Reclassification of a Non-Credible Contingency Event: Farrell - Reece No.1 220 kV line and Farrell - Reece No.2 220 kV 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: Farrell - Reece No.1 220 kV and Farrell - Reece No.2 220 kV
Duration: 25/01/2021 11:48 until further notice
Constraint set(s) invoked:
F-T-FARE_N-2 Constraint set contains the following interconnector(s) on the left hand side:
T-V-MNSP1
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: Farrell - Reece No.1 220 kV and Farrell - Reece No.2 220 kV
Duration: 25/01/2021 11:48 until further notice
Constraint set(s) invoked:
F-T-FARE_N-2 Constraint set contains the following interconnector(s) on the left hand side:
T-V-MNSP1
Auto-generated on behalf of Manager NEM Real Time Operations
82360MARKET INTERVENTION25/01/2021 12:08:19 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 0100 hrs 26/01/2021 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 0100 hrs 26/01/2021 to maintain power system security in SA. Refer to current Transfer Limit Advice for SA system strength on AEMOs website.
If necessary, AEMO will estimate and publish the latest time at which AEMO would need to intervene after the 1230 hrs predispatch run on the 25/01/2021.
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 0100 hrs 26/01/2021 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 0100 hrs 26/01/2021 to maintain power system security in SA. Refer to current Transfer Limit Advice for SA system strength on AEMOs website.
If necessary, AEMO will estimate and publish the latest time at which AEMO would need to intervene after the 1230 hrs predispatch run on the 25/01/2021.
Manager NEM Real Time Operations
82359GENERAL NOTICE25/01/2021 10:34:43 AM
NEM Local Temperature Alerts for TAS, VIC from 25 Jan 2021 to 29 Jan 2021
AEMO ELECTRICITY MARKET NOTICE
AEMO's weather service provider has issued forecast temperatures equal to or greater than the NEM Local Temperature Alert Levels for listed weather stations below.
TAS
Launceston Ti Tree Bend (33+ Deg C): 25th Jan
VIC
Latrobe Valley Ap (39+ Deg C): 25th Jan
Melbourne Olympic Park (39+ Deg C): 25th Jan
Mildura Ap (39+ Deg C): 25th Jan
The NEM Local Temperature Alert Levels are:
Launceston Ti Tree Bend: 33 Deg C, Dalby Airport: 37 Deg C, for all other selected weather stations: 39 Deg C.
AEMO requests Market Participants to:
1. review the weather forecast in the local area where their generating units / MNSP converter stations are located and,
2. if required, update the available capacity in their dispatch offers or availability submissions consistent with the forecast temperatures.
Further information is available at:
https://aemo.com.au/energy-systems/electricity/national-electricity-market-nem/nem-forecasting-and-planning/forecasting-and-reliability/projected-assessment-of-system-adequacy/nem-local-temperature-alerts
AEMO Operations Planning
AEMO's weather service provider has issued forecast temperatures equal to or greater than the NEM Local Temperature Alert Levels for listed weather stations below.
TAS
Launceston Ti Tree Bend (33+ Deg C): 25th Jan
VIC
Latrobe Valley Ap (39+ Deg C): 25th Jan
Melbourne Olympic Park (39+ Deg C): 25th Jan
Mildura Ap (39+ Deg C): 25th Jan
The NEM Local Temperature Alert Levels are:
Launceston Ti Tree Bend: 33 Deg C, Dalby Airport: 37 Deg C, for all other selected weather stations: 39 Deg C.
AEMO requests Market Participants to:
1. review the weather forecast in the local area where their generating units / MNSP converter stations are located and,
2. if required, update the available capacity in their dispatch offers or availability submissions consistent with the forecast temperatures.
Further information is available at:
https://aemo.com.au/energy-systems/electricity/national-electricity-market-nem/nem-forecasting-and-planning/forecasting-and-reliability/projected-assessment-of-system-adequacy/nem-local-temperature-alerts
AEMO Operations Planning
82358INTER-REGIONAL TRANSFER25/01/2021 09:20:37 AM
Update - Inter-regional transfer limit variation - SA Region - 25/01/2021
AEMO ELECTRICITY MARKET NOTICE
Update - Inter-regional transfer limit variation - SA Region - 25/01/2021
Refer AEMO Electricity Market Notice 82355
To manage Power System Security in the SA Region:
Constraint set CA_BRIS_4F1FE461_1 revoked at 0920 hrs
Constraint set I-SV_100 invoked from 0920 hrs until further notice
Constraint has the following interconnector on the LHS
VIC1-SA1
Manager NEM Real Time Operations
Update - Inter-regional transfer limit variation - SA Region - 25/01/2021
Refer AEMO Electricity Market Notice 82355
To manage Power System Security in the SA Region:
Constraint set CA_BRIS_4F1FE461_1 revoked at 0920 hrs
Constraint set I-SV_100 invoked from 0920 hrs until further notice
Constraint has the following interconnector on the LHS
VIC1-SA1
Manager NEM Real Time Operations
82357GENERAL NOTICE25/01/2021 02:38:37 AM
Cancellation - Psymetrix PhasorPoint - Unplanned Outage - 25/01/2021.
AEMO ELECTRICITY MARKET NOTICE
Refer to MN 82356
AEMO Psymetrix PhasorPoint application returned to service.
The following constraint set was invoked from 0150 hrs to 0240 hrs
I-OSC_STAB_MON
The constraint set contains the following interconnector on the left hand side.
NSW1-QLD1
V-S_MNSP1
V-SA
VIC1-NSW1
Manager NEM Real Time Operations
Refer to MN 82356
AEMO Psymetrix PhasorPoint application returned to service.
The following constraint set was invoked from 0150 hrs to 0240 hrs
I-OSC_STAB_MON
The constraint set contains the following interconnector on the left hand side.
NSW1-QLD1
V-S_MNSP1
V-SA
VIC1-NSW1
Manager NEM Real Time Operations
82356GENERAL NOTICE25/01/2021 01:51:23 AM
Psymetrix PhasorPoint - Unplanned Outage - 25/01/2021.
AEMO ELECTRICITY MARKET NOTICE
There is an unplanned of AEMO Psymetrix PhasorPoint application.
The following constraint set was invoked at 0150 hrs 25/01/2021
I-OSC_STAB_MON
The constraint set contains the following interconnector on the left hand side.
NSW1-QLD1
V-S_MNSP1
V-SA
VIC1-NSW1
Manager NEM Real Time Operations
There is an unplanned of AEMO Psymetrix PhasorPoint application.
The following constraint set was invoked at 0150 hrs 25/01/2021
I-OSC_STAB_MON
The constraint set contains the following interconnector on the left hand side.
NSW1-QLD1
V-S_MNSP1
V-SA
VIC1-NSW1
Manager NEM Real Time Operations