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Inter-Regional Transfer Limit Variation South Australia Region - Murraylink 01/04/2019
Inter-Regional Transfer Limit Variation South Australia Region - Murraylink 01/04/2019
At 0703 hrs Murraylink DC interconnector runback control scheme operated restricting flows between Victoria and South Australia. The transfer at the time was 45 MW from Victoria to South Australia.
Constraint set I-CTRL_ISSUE_ML was invoked from 0725 hrs until further notice.
The constraint set has the following interconnector on the LHS.
V-S-MNSP1
Manager NEM Real Time Operations
NON-CONFORMANCE Region QLD1 Monday, 1 April 2019
NON-CONFORMANCE QLD1 Region Monday, 1 April 2019
AEMO declared a schedule generating unit non-conforming
Unit: STAN-3
Duration: 01/04/2019 02:40 to 01/04/2019 02:50
Amount: 47 MW
Constraint: NC-Q_STAN-3
Auto-generated on behalf of Manager NEM Real Time Operations
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.
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: 31/03/2019 16:14
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 67997
Auto-generated on behalf of Manager NEM Real Time Operations
Cancellation of a Non-Credible Contingency Event: Collinsville Nth-Clare Sth Tee King Creek 7128 132kV line and Strathmore-Clare South 7208 132kV line in QLD1 due to Lightning.
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 Nth-Clare Sth Tee King Creek 7128 132kV and Strathmore-Clare South 7208 132kV
Cancellation time: 31/03/2019 16:14
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 67998
Auto-generated on behalf of Manager NEM Real Time Operations
Reclassification of a Non-Credible Contingency Event: Collinsville Nth-Clare Sth Tee King Creek 7128 132kV line and Strathmore-Clare South 7208 132kV line in QLD1 due to Lightning.
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 Nth-Clare Sth Tee King Creek 7128 132kV and Strathmore-Clare South 7208 132kV
Duration: 31/03/2019 15:12 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: Collinsville - Stoney Creek No.7306 132 kV line and Collinsville - Newlands No.7121 132 kV line in QLD1 due to Lightning.
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: 31/03/2019 15:12 until further notice
Constraint set(s) invoked:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations
Cancellation - AEMO Intervention Event - Intervention price dispatch intervals - Direction South Australia region 29/03/2019
Refer Electricity Market Notices 67935 and 67980
The AEMO Intervention Event and all associated directions are cancelled from 1400 hrs 31/03/2019.
Manager NEM Real Time Operations
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.
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: 31/03/2019 00:54
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 67992
Auto-generated on behalf of Manager NEM Real Time Operations
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.
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: 30/03/2019 22:51 until further notice
Constraint set(s) invoked:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations