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NON-CONFORMANCE Region QLD1 Friday, 19 November 2021
NON-CONFORMANCE QLD1 Region Friday, 19 November 2021
AEMO declared a schedule generating unit non-conforming
Unit: SWAN_E
Duration: 19/11/2021 13:50 to 19/11/2021 13:55
Amount: 133 MW
Constraint: NC-Q_SWAN_E
Auto-generated on behalf of Manager NEM Real Time Operations
[EventId:202111191335_NRM_QLD1_NSW1_started] NEGRES CONSTRAINT NRM_QLD1_NSW1 started operating from 19 November 2021 13:35
Issued by Australian Energy Market Operator Ltd at 1335 hrs on 19 November 2021
ACTUAL NEGATIVE SETTLEMENT RESIDUES - QLD to NSW - 19 November 2021.
Electricity Market outcomes have resulted in the accumulation of negative settlement residues that have exceeded the allowable negative residue threshold for the QLD to NSW directional interconnector.
The negative residue constraint set NRM_QLD1_NSW1 commenced operating from 1335 hrs on 19 November 2021.
This constraint set contains an equation with the following interconnectors on the LHS:
N-Q-MNSP1
NSW1-QLD1
The RHS of the constraint equation may be adjusted to manage residues.
This is an AEMO autogenerated Market Notice.
[EventId:202111191330_NRM_QLD1_NSW1_stopped] NEGRES CONSTRAINT NRM_QLD1_NSW1 ceased operating from 19 November 2021 13:30
Issued by Australian Energy Market Operator Ltd at 1330 hrs on 19 November 2021
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - QLD to NSW - 19 November 2021.
Refer to market notice: 92612
AEMO has ceased taking action to minimize the further accumulation of negative settlement residues on the QLD to NSW directional interconnector.
The negative residue constraint NRM_QLD1_NSW1 ceased operating at 1330 hrs on 19 November 2021.
This is an AEMO autogenerated Market Notice.
Planned outage of Heywood - South East No.2 line in the South Australia (SA) region on 02/12/2021 and 03/12/2021.
The Heywood - South East No.2 line in the South Australia (SA) region is planned to be out of service as follows:
- 2030 hrs on 02/12/2021 to 0330 hrs on 03/12/2021.
A credible contingency event during this planned outage could cause synchronous separation of the South Australia (SA) region from the rest of the NEM. If separation occurs, load may be interrupted due to the operation of the Automatic Under Frequency Load Shedding (AUFLS) scheme in SA.
The credible separation contingency is managed as follows:
-When power transfer is from SA to Victoria, contingency lower FCAS will be sourced from SA.
-When power transfer is from Victoria to SA, due to the 47-52Hz island separation frequency band advised by the SA jurisdiction, contingency raise FCAS is not sourced in SA and the AUFLS scheme may respond to low frequency events.
-Power transfer will be restricted on Victoria - South Australia interconnector (Heywood interconnector) to manage system security following the loss of the next contingency.
The following constraint sets have been invoked for this outage:
F-I-HYSE
I-HYSE
I-VS_050
S-HYSE
V-HYTX_M12
Refer AEMO Network Outage Schedule (NOS) for further details.
Ayesha Ashfaq
AEMO Operations
[EventId:202111191235_NRM_QLD1_NSW1_started] NEGRES CONSTRAINT NRM_QLD1_NSW1 started operating from 19 November 2021 12:35
Issued by Australian Energy Market Operator Ltd at 1235 hrs on 19 November 2021
ACTUAL NEGATIVE SETTLEMENT RESIDUES - QLD to NSW - 19 November 2021.
Electricity Market outcomes have resulted in the accumulation of negative settlement residues that have exceeded the allowable negative residue threshold for the QLD to NSW directional interconnector.
The negative residue constraint set NRM_QLD1_NSW1 commenced operating from 1235 hrs on 19 November 2021.
This constraint set contains an equation with the following interconnectors on the LHS:
N-Q-MNSP1
NSW1-QLD1
The RHS of the constraint equation may be adjusted to manage residues.
This is an AEMO autogenerated Market Notice.
Planned outage of Heywood - South East No.1 line in the South Australia (SA) region on 01/12/2021 and 02/12/2021.
The Heywood - South East No.1 line in the South Australia (SA) region is planned to be out of service as follows:
- 2030 hrs on 01/12/2021 to 0330 hrs on 02/12/2021.
A credible contingency event during this planned outage could cause synchronous separation of the South Australia (SA) region from the rest of the NEM. If separation occurs, load may be interrupted due to the operation of the Automatic Under Frequency Load Shedding (AUFLS) scheme in SA.
The credible separation contingency is managed as follows:
-When power transfer is from SA to Victoria, contingency lower FCAS will be sourced from SA.
-When power transfer is from Victoria to SA, due to the 47-52Hz island separation frequency band advised by the SA jurisdiction, contingency raise FCAS is not sourced in SA and the AUFLS scheme may respond to low frequency events.
-Power transfer will be restricted on Victoria - South Australia interconnector (Heywood interconnector) to manage system security following the loss of the next contingency.
The following constraint sets have been invoked for this outage:
F-I-HYSE
I-HYSE
I-VS_050
S-HYSE
V-HYTX_M12
Refer AEMO Network Outage Schedule (NOS) for further details.
Ayesha Ashfaq
AEMO Operations
[EventId:202111191200_NRM_QLD1_NSW1_stopped] NEGRES CONSTRAINT NRM_QLD1_NSW1 ceased operating from 19 November 2021 12:00
Issued by Australian Energy Market Operator Ltd at 1200 hrs on 19 November 2021
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - QLD to NSW - 19 November 2021.
Refer to market notice: 92609
AEMO has ceased taking action to minimize the further accumulation of negative settlement residues on the QLD to NSW directional interconnector.
The negative residue constraint NRM_QLD1_NSW1 ceased operating at 1200 hrs on 19 November 2021.
This is an AEMO autogenerated Market Notice.
[EventId:202111191105_NRM_QLD1_NSW1_started] NEGRES CONSTRAINT NRM_QLD1_NSW1 started operating from 19 November 2021 11:05
Issued by Australian Energy Market Operator Ltd at 1105 hrs on 19 November 2021
ACTUAL NEGATIVE SETTLEMENT RESIDUES - QLD to NSW - 19 November 2021.
Electricity Market outcomes have resulted in the accumulation of negative settlement residues that have exceeded the allowable negative residue threshold for the QLD to NSW directional interconnector.
The negative residue constraint set NRM_QLD1_NSW1 commenced operating from 1105 hrs on 19 November 2021.
This constraint set contains an equation with the following interconnectors on the LHS:
N-Q-MNSP1
NSW1-QLD1
The RHS of the constraint equation may be adjusted to manage residues.
This is an AEMO autogenerated Market Notice.
[EventId:202111191040_confirmed] Prices for interval 19-Nov-2021 10:40 are now confirmed
Issued by Australian Energy Market Operator Ltd at 1100 hrs on 19 November 2021
PRICES ARE NOW CONFIRMED for trading interval 19-Nov-2021 10:40.
In accordance with Market Notice 92598 AEMO has reviewed this trading interval and determined that:
- Manifestly Incorrect Inputs did not apply
Prices remain unchanged.
This is an AEMO autogenerated Market Notice.