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67637RECLASSIFY CONTINGENCY07/03/2019 03:24:20 AM
Reclassification of a Non-Credible Contingency Event: Clare South- King Creek 7128/2 132kV line and Strathmore - Clare South 7208 132kV line in QLD1 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: QLD1
Lines: Clare South- King Creek 7128/2 132kV and Strathmore - Clare South 7208 132kV
Duration: 07/03/2019 03:24 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: QLD1
Lines: Clare South- King Creek 7128/2 132kV and Strathmore - Clare South 7208 132kV
Duration: 07/03/2019 03:24 until further notice
Constraint set(s) invoked:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations
67636RECLASSIFY CONTINGENCY07/03/2019 02:51:25 AM
Reclassification of a Non-Credible Contingency Event: Ross - Chalumbin No.857 275 kV line and Ross - Chalumbin No.858 275 kV line in QLD1 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: QLD1
Lines: Ross - Chalumbin No.857 275 kV and Ross - Chalumbin No.858 275 kV
Duration: 07/03/2019 02:51 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: QLD1
Lines: Ross - Chalumbin No.857 275 kV and Ross - Chalumbin No.858 275 kV
Duration: 07/03/2019 02:51 until further notice
Constraint set(s) invoked:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations
67635RECLASSIFY CONTINGENCY07/03/2019 02:29:45 AM
Cancellation of a Non-Credible Contingency Event: Chalumbin - Turkinje No.7165 132 kV line and Chalumbin - Turkinje No.7166 132 kV line in QLD1 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: QLD1
Lines: Chalumbin - Turkinje No.7165 132 kV and Chalumbin - Turkinje No.7166 132 kV
Cancellation time: 07/03/2019 02:29
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 67627
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: QLD1
Lines: Chalumbin - Turkinje No.7165 132 kV and Chalumbin - Turkinje No.7166 132 kV
Cancellation time: 07/03/2019 02:29
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 67627
Auto-generated on behalf of Manager NEM Real Time Operations
67634RECLASSIFY CONTINGENCY07/03/2019 02:24:45 AM
Cancellation of a Non-Credible Contingency Event: Clare South- King Creek 7128/2 132kV line and Strathmore - Clare South 7208 132kV line in QLD1 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: QLD1
Lines: Clare South- King Creek 7128/2 132kV and Strathmore - Clare South 7208 132kV
Cancellation time: 07/03/2019 02:24
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 67605
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: QLD1
Lines: Clare South- King Creek 7128/2 132kV and Strathmore - Clare South 7208 132kV
Cancellation time: 07/03/2019 02:24
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 67605
Auto-generated on behalf of Manager NEM Real Time Operations
67633RECLASSIFY CONTINGENCY07/03/2019 02:19:48 AM
Cancellation of a Non-Credible Contingency Event: Ross - Chalumbin No.857 275 kV line and Ross - Chalumbin No.858 275 kV line in QLD1 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: QLD1
Lines: Ross - Chalumbin No.857 275 kV and Ross - Chalumbin No.858 275 kV
Cancellation time: 07/03/2019 02:19
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 67632
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: QLD1
Lines: Ross - Chalumbin No.857 275 kV and Ross - Chalumbin No.858 275 kV
Cancellation time: 07/03/2019 02:19
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 67632
Auto-generated on behalf of Manager NEM Real Time Operations
67632RECLASSIFY CONTINGENCY07/03/2019 01:18:01 AM
Reclassification of a Non-Credible Contingency Event: Ross - Chalumbin No.857 275 kV line and Ross - Chalumbin No.858 275 kV line in QLD1 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: QLD1
Lines: Ross - Chalumbin No.857 275 kV and Ross - Chalumbin No.858 275 kV
Duration: 07/03/2019 01:17 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: QLD1
Lines: Ross - Chalumbin No.857 275 kV and Ross - Chalumbin No.858 275 kV
Duration: 07/03/2019 01:17 until further notice
Constraint set(s) invoked:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations
67631RECLASSIFY CONTINGENCY07/03/2019 01:14:47 AM
Cancellation of a Non-Credible Contingency Event: Ross - Chalumbin No.857 275 kV line and Ross - Chalumbin No.858 275 kV line in QLD1 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: QLD1
Lines: Ross - Chalumbin No.857 275 kV and Ross - Chalumbin No.858 275 kV
Cancellation time: 07/03/2019 01:14
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 67621
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: QLD1
Lines: Ross - Chalumbin No.857 275 kV and Ross - Chalumbin No.858 275 kV
Cancellation time: 07/03/2019 01:14
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 67621
Auto-generated on behalf of Manager NEM Real Time Operations
67630GENERAL NOTICE07/03/2019 12:53:41 AM
Update - Planned outage of Moorabool -Tarrone 500 kV line in the Victoria region on 07/03/2019
AEMO ELECTRICITY MARKET NOTICE
Refer AEMO Electricity Market Notice 67322
The Moorabool -Tarrone 500 kV line in the Victoria (VIC) region is now planned to be out of service from 0630 hrs to 1700 hrs on 07/03/2019.
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 sufficiently low on Victoria - South Australia interconnector (Heywood interconnector) to manage system security following the loss of the next contingency.
Forecast capacity reserves in the SA region are currently sufficient to meet electricity demand during the planned outage.
The following constraint sets have been invoked for this outage:
F-V-MLTR
I-VS_050
S-X_BC_CP
V-MACARTHUR_ZERO
V-MLTR
Refer AEMO Network Outage Schedule (NOS) for further details.
Manager NEM Real Time Operations
Refer AEMO Electricity Market Notice 67322
The Moorabool -Tarrone 500 kV line in the Victoria (VIC) region is now planned to be out of service from 0630 hrs to 1700 hrs on 07/03/2019.
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 sufficiently low on Victoria - South Australia interconnector (Heywood interconnector) to manage system security following the loss of the next contingency.
Forecast capacity reserves in the SA region are currently sufficient to meet electricity demand during the planned outage.
The following constraint sets have been invoked for this outage:
F-V-MLTR
I-VS_050
S-X_BC_CP
V-MACARTHUR_ZERO
V-MLTR
Refer AEMO Network Outage Schedule (NOS) for further details.
Manager NEM Real Time Operations
67629RECLASSIFY CONTINGENCY06/03/2019 11:19:45 PM
Cancellation of a Non-Credible Contingency Event: Goonyella - Nth Goonyella T- Stoney Creek 7122 132 kV line and Goonyella - Newlands No. 7155 132 kV line in QLD1 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: QLD1
Lines: Goonyella - Nth Goonyella T- Stoney Creek 7122 132 kV and Goonyella - Newlands No. 7155 132 kV
Cancellation time: 06/03/2019 23:19
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 67628
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: QLD1
Lines: Goonyella - Nth Goonyella T- Stoney Creek 7122 132 kV and Goonyella - Newlands No. 7155 132 kV
Cancellation time: 06/03/2019 23:19
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 67628
Auto-generated on behalf of Manager NEM Real Time Operations