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        • 68220 26 Apr 2019 8:21 RECLASSIFY CONTINGENCY
        • 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: 26/04/2019 08:21 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

        • 68219 26 Apr 2019 6:28 RECLASSIFY CONTINGENCY
        • 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: 26/04/2019 06:27 until further notice

          Constraint set(s) invoked:
          NONE

          Auto-generated on behalf of Manager NEM Real Time Operations

        • 68218 26 Apr 2019 6:16 INTER-REGIONAL TRANSFER
        • Cancellation - Inter-regional transfer limit variation: Hazelwood - South Morang No.1 500 kV Line (Vic) - Voltage Control

          AEMO ELECTRICITY MARKET NOTICE

          Cancellation - Inter-regional transfer limit variation: Hazelwood - South Morang No.1 500 kV Line (Vic) - Voltage Control

          Refer AEMO Electricity Market Notice 68215

          The Hazelwood - South Morang No.1 500 kV Line has been returned to service.

          The following constraint set was revoked at 0615 hrs 26/04/2019.
          V-HWSM

          The constraint set contains equations with the following interconnectors on the LHS.

          T-V-MNSP1
          V-S-MNSP1
          V-SA
          VIC1-NSW1

          Manager NEM Real Time Operations


        • 68217 26 Apr 2019 5:29 RECLASSIFY CONTINGENCY
        • Cancellation 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

          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: TAS1

          Lines: Farrell-John Butters and Farrell-Rosebery-Newton-Queenstown

          Cancellation time: 26/04/2019 05:29

          Constraint set(s) revoked:
          NONE

          Refer AEMO Electricity Market Notice 68216

          Auto-generated on behalf of Manager NEM Real Time Operations

        • 68216 26 Apr 2019 4:45 RECLASSIFY CONTINGENCY
        • 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: 26/04/2019 04:45 until further notice

          Constraint set(s) invoked:
          NONE

          Auto-generated on behalf of Manager NEM Real Time Operations

        • 68215 26 Apr 2019 1:58 INTER-REGIONAL TRANSFER
        • Inter-regional transfer limit variation: Hazelwood - South Morang No1 500 kV Line (VIC) - Voltage Control - 26/04/2019

          AEMO ELECTRICITY MARKET NOTICE

          Inter-regional transfer limit variation: Hazelwood - South Morang No1 500 kV Line (VIC) - Voltage Control - 26/04/2019

          The Hazelwood - South Morang No1 500 kV Line has been de-energised to manage voltages in the Victoria region.

          The following constraint set was invoked at 0155 hrs.

          V-HWSM

          The constraint set contains equations with the following interconnectors on the LHS.

          T-V-MNSP
          V-S-MNSP1
          V-SA
          VIC1-NSW1

          Refer to AEMO Network Outage Scheduler (NOS) for further details

          Manager NEM Real Time Operations

        • 68214 25 Apr 2019 20:55 NON-CONFORMANCE
        • NON-CONFORMANCE Region VIC1 Thursday, 25 April 2019

          AEMO ELECTRICITY MARKET NOTICE

          NON-CONFORMANCE VIC1 Region Thursday, 25 April 2019

          AEMO declared a schedule generating unit non-conforming

          Unit: YWPS3
          Duration: 25/04/2019 20:50 to 25/04/2019 20:55
          Amount: -83 MW
          Constraint: NC-V_YWPS3

          Auto-generated on behalf of Manager NEM Real Time Operations

        • 68211 25 Apr 2019 6:49 INTER-REGIONAL TRANSFER
        • Cancellation - Inter-Regional Transfer limit variation - Murraylink control unavailable

          AEMO ELECTRICITY MARKET NOTICE

          Cancellation - Inter-Regional Transfer limit variation - Murraylink control unavailable

          Constraint Set I-CTRL_ISSUE_ML was invoked from 0550 hrs to 0635 hrs 25/04/2019
          This Constraint Set contains equations with the following interconnector on the LHS.

          V-S-MNSP1

          Manager NEM Real Time Operations

        • 68210 25 Apr 2019 5:52 INTER-REGIONAL TRANSFER
        • Inter-Regional Transfer limit variation - Murraylink control unavailable - SA Region

          AEMO ELECTRICITY MARKET NOTICE

          Inter-Regional Transfer limit variation - Murraylink control unavailable - SA Region

          AEMO has been notified that the controls to vary Murraylink output are unavailable until further notice.

          Constraint Set I-CTRL_ISSUE_ML was invoked from 0550 hrs until further notice

          This Constraint Set contains equations with the following interconnector on the LHS.

          V-S-MNSP1

          Manager NEM Real Time Operations