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67098POWER SYSTEM EVENTS04/02/2019 03:45:33 PM
Update - Non-credible contingency event - TAS region - 16/12/2018
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - Tas region - 16/12/2018
Refer AEMO ELECTRICITY MARKET NOTICE MN 66055
At 1824 hrs 16/12/2018 the Waddamana - Palmerston 110 kV line tripped and automatically reclosed and the Waddamana - Bridgewater 110 kV line tripped at the Bridgewater end only and automatically reclosed.
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.
AEMO will no longer reclassify this event as a credible contingency event from 1545 hrs 04/02/2019.
Manager NEM Real Time Operations
Update - Non-credible contingency event - Tas region - 16/12/2018
Refer AEMO ELECTRICITY MARKET NOTICE MN 66055
At 1824 hrs 16/12/2018 the Waddamana - Palmerston 110 kV line tripped and automatically reclosed and the Waddamana - Bridgewater 110 kV line tripped at the Bridgewater end only and automatically reclosed.
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.
AEMO will no longer reclassify this event as a credible contingency event from 1545 hrs 04/02/2019.
Manager NEM Real Time Operations
67097RECLASSIFY CONTINGENCY04/02/2019 03:34:50 PM
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: 04/02/2019 15:34
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 67094
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: 04/02/2019 15:34
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 67094
Auto-generated on behalf of Manager NEM Real Time Operations
67096RECLASSIFY CONTINGENCY04/02/2019 03:33:45 PM
Reclassification 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
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: Chalumbin - Turkinje No.7165 132 kV and Chalumbin - Turkinje No.7166 132 kV
Duration: 04/02/2019 15:33 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: Chalumbin - Turkinje No.7165 132 kV and Chalumbin - Turkinje No.7166 132 kV
Duration: 04/02/2019 15:33 until further notice
Constraint set(s) invoked:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations
67094RECLASSIFY CONTINGENCY04/02/2019 01:59:57 PM
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: 04/02/2019 13:59 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: 04/02/2019 13:59 until further notice
Constraint set(s) invoked:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations
67093INTER-REGIONAL TRANSFER04/02/2019 08:42:58 AM
Inter-regional transfer limit variation - NSW Region - 04/02/2019
AEMO ELECTRICITY MARKET NOTICE
Inter-regional transfer limit variation - NSW Region - 04/02/2019
At 0835 hrs the Taree to Port Macquaire (964) 132 kV line has been taken out of service.
Refer to the Network Outage scheduler (NOS) for further details.
The following outage constraint was invoked from 0835 hrs.
N-TAPM_964
The outage constraint contains the following interconnectors on the LHS
NSW1-QLD1
N-Q_MNSP1
Manager NEM Real Time Operations
Inter-regional transfer limit variation - NSW Region - 04/02/2019
At 0835 hrs the Taree to Port Macquaire (964) 132 kV line has been taken out of service.
Refer to the Network Outage scheduler (NOS) for further details.
The following outage constraint was invoked from 0835 hrs.
N-TAPM_964
The outage constraint contains the following interconnectors on the LHS
NSW1-QLD1
N-Q_MNSP1
Manager NEM Real Time Operations
67092RECLASSIFY CONTINGENCY04/02/2019 04:19:54 AM
Cancellation of a Non-Credible Contingency Event: Eildon PS - Mt Beauty No.1 220 kV line and Eildon PS - Mt Beauty No.2 220 kV line in VIC1 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: VIC1
Lines: Eildon PS - Mt Beauty No.1 220 kV and Eildon PS - Mt Beauty No.2 220 kV
Cancellation time: 04/02/2019 04:19
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 67088
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: VIC1
Lines: Eildon PS - Mt Beauty No.1 220 kV and Eildon PS - Mt Beauty No.2 220 kV
Cancellation time: 04/02/2019 04:19
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 67088
Auto-generated on behalf of Manager NEM Real Time Operations
67091RECLASSIFY CONTINGENCY04/02/2019 02:09:50 AM
Cancellation of a Non-Credible Contingency Event: Collinsville - Stoney Creek No.7306 132 kV line and Collinsville - Newlands No.7121 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: Collinsville - Stoney Creek No.7306 132 kV and Collinsville - Newlands No.7121 132 kV
Cancellation time: 04/02/2019 02:09
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 67089
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: Collinsville - Stoney Creek No.7306 132 kV and Collinsville - Newlands No.7121 132 kV
Cancellation time: 04/02/2019 02:09
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 67089
Auto-generated on behalf of Manager NEM Real Time Operations
67090RECLASSIFY CONTINGENCY04/02/2019 02:04:53 AM
Cancellation of a Non-Credible Contingency Event: Dederang - Glenrowan No.1 220 kV line and Dederang - Glenrowan No.3 220 kV line in VIC1 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: VIC1
Lines: Dederang - Glenrowan No.1 220 kV and Dederang - Glenrowan No.3 220 kV
Cancellation time: 04/02/2019 02:04
Constraint set(s) revoked:
V-DDGN_N-2 Constraint set contains the following interconnector(s) on the left hand side:
V-S-MNSP1
V-SA
VIC1-NSW1
Refer AEMO Electricity Market Notice 67087
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: VIC1
Lines: Dederang - Glenrowan No.1 220 kV and Dederang - Glenrowan No.3 220 kV
Cancellation time: 04/02/2019 02:04
Constraint set(s) revoked:
V-DDGN_N-2 Constraint set contains the following interconnector(s) on the left hand side:
V-S-MNSP1
V-SA
VIC1-NSW1
Refer AEMO Electricity Market Notice 67087
Auto-generated on behalf of Manager NEM Real Time Operations
67089RECLASSIFY CONTINGENCY04/02/2019 01:07:40 AM
Reclassification of a Non-Credible Contingency Event: Collinsville - Stoney Creek No.7306 132 kV line and Collinsville - Newlands No.7121 132 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: Collinsville - Stoney Creek No.7306 132 kV and Collinsville - Newlands No.7121 132 kV
Duration: 04/02/2019 01:07 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: Collinsville - Stoney Creek No.7306 132 kV and Collinsville - Newlands No.7121 132 kV
Duration: 04/02/2019 01:07 until further notice
Constraint set(s) invoked:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations