AEMO ELECTRICITY MARKET NOTICE

Reclassification of a Non-Credible Contingency Event: Para -Templers West and the Magill - Torrens Island A 275 kV Lines in the South Australia Sunday 17 September 2017 region due to the severe weather warning for damaging winds that may exceed the rating of the structures of these Lines.

AEMO has reclassified the simultaneous trip of the Para -Templers West and the Magill - Torrens Island A 275 kV Lines as a credible contingency from 2350 hrs Sunday 17 September 2017 until further notice.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Management of South Australia Power System Security - Severe Weather Warning - Sunday, 17 September 2017

AEMO has determined that the severe weather warning issued by the BOM presents an added risk to the power system in South Australia.

To manage power system security, AEMO has applied a network constraint to limit the flow on the VIC-SA interconnector in the Victoria to South Australia direction.

The following constraint set was invoked at 2350 hrs and will remain in place until further notice.

I-VS_250

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

V-SA

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

NON-CONFORMANCE VIC1 Region Sunday, 17 September 2017

AEMO declared a schedule generating unit non-conforming

Unit: LOYYB1
Duration: 17/09/2017 18:55 to 17/09/2017 19:05
Amount: -55 MW
Constraint: NC-V_LOYYB1

Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Cancellation Inter-Regional Transfer limit variation - Directlink control unavailable (NSW Region) - 17/09/17

Refer AEMO Electricity Market Notice 59215

AEMO has been notified that the controls to vary Directlink output are available.

The Constraint Set I-CTRL_ISSUE_TE was revoked at 1815 hrs

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

N-Q-MNSP1

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Inter-Regional Transfer limit variation - Directlink control unavailable (NSW Region) -17/09/17

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

The Constraint Set I-CTRL_ISSUE_TE was invoked from 1645 hrs

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

N-Q-MNSP1

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Inter-Regional Transfer Limit Variation - Terranora Interconnector

There has been an unplanned outage of the No 3 Leg of Directlink

The following constraint set was invoked at 1630 hrs 17/09/2017
N-X_MBTE_2

The outage constraint set contains the following interconnector on the left hand side.
N-Q-MNSP1

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

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Update Constraint Automation to Manage Power System Security in the South Australia Region - Sunday, 17 September 2017

Refer AEMO market notice 59203

AEMO had invoked an automated constraint set CA_MQS_48D013FF from 0620 hrs to manage power system security in the South Australia region. There is no longer a requirement for this constraint.

Constraint Set CA_MQS_48D013FF was revoked at 0920hrs

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE.

Cancellation - AEMO Intervention Event intervention price dispatch intervals - 17/09/17

Refer AEMO Electricity Market Notice 59206

The AEMO Intervention Event is cancelled from the 0910 hrs dispatch interval 17/09/17

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Cancellation - Direction SA Region 17/09/2017

Refer AEMO Electricity Market Notice 59205

Direction cancelled from 0905 hrs 17/09/2017

Manager NEM Real Time Operations