AEMO ELECTRICITY MARKET NOTICE

Reclassification of a Non-Credible Contingency Event: Tarong - Chinchilla 7168 and 7183 132 kV Lines in Queensland due to Lightning.

Lightning is occurring near the Tarong - Chinchilla 7168 and 7183 132 kV Lines.
AEMO considers the simultaneous trip of those circuits to now be more likely.
Therefore AEMO has reclassified this as a credible contingency event from 1540 hrs 15-07-2017 until further notice.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Cancellation - Inter-Regional Transfer limit variation Murraylink

Refer Electricity Market Notice 58818

The Murraylink control issue has been resolved.
The Constraint Set I-CTRL_ISSUE_ML has been revoked from 1240 hrs 15-07-2017.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Inter-Regional Transfer limit variation Murraylink

The power flow on the Murraylink interconnector is not following the value determined by the NEM dispatch algorithm.
The Constraint Set I-CTRL_ISSUE_ML has been invoked from 1220 hrs 15-07-2017 until further notice.

This Constraint Set contains an equation with the following interconnector on the LHS.
V-S-MNSP1

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

NON-CONFORMANCE NSW1 Region Thursday, 13 July 2017

AEMO declared a schedule generating unit non-conforming

Unit: VP5
Duration: 13/07/2017 19:20 to 13/07/2017 19:35
Amount: -29 MW
Constraint: NC-N_VP5

Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE
Network Augmentation Commissioned - Qld Region - 12 July 2017

A network augmentation has been commissioned in the Qld Region as follows:
T34_Moranbah No2 132kV 50MVAr capacitor bank was commissioned at 1700 hrs 12 July 2017.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

SCADA INTERRUPTION - Intermittent failed participant data
AEMO advises participants that there have been periods where the reported South Australian scheduled demand is less than what actually occurred.
On the 12 July 2017 between dispatch intervals 0620 and 0635 the reported scheduled demand was approximately 200MW lower than actual.
At the 1415 dispatch interval the reported scheduled demand was approximately 130MW lower than actual.
AEMO is continuing to monitor the SCADA input.

Manager NEM Real Time Operations

Change Number: CHG0044140

Notification issued to: Market Notice

Notification Type: Initial

Change Type: Normal

Service/ Component: Internet

Change Title: Planned System Outage - QLD Internet link Maintenance

Change Start Date & Time: 19/07/2017 08:00:00 AEST

Change End Date & Time: 19/07/2017 20:00:00 AEST

Outage Start Date & Time: 19/07/2017 08:00:00 AEST

Outage End Date & Time: 19/07/2017 20:00:00 AEST

Change Description:

The AEMO QLD data center internet telecommunications service will experience an outage as part of an upgrade to this service.

Environment: Production

Participant Impact and Requirements:

The following impacts are expected to participant connectivity during this planned outage:

IPWAN Participants - Nil

Lan-2-Lan VPN Participants - Upto 1 x 10 minutes to participants whom have established their VPN connection/s via the AEMO QLD datacenter termination point (202.44.76.10)
Note: Participants are encouraged to ensure their VPN connections are already established or are configured (as per AEMO best practice) to automatically failover to the alternate AEMO NSW datacenter termination point (202.44.78.10) prior to this scheduled outage.

Remote Access VPN Participants - Upto 1 x 10 minutes to participants who utilise an AEMO RSA token and the AEMO VPN client software to establish their VPN via the AEMO QLD datacenter VPN termination point (202.44.76.8)
Note: Participants are encouraged to establish their VPN client software connections via the alternate AEMO NSW datacenter VPN endpoint (202.44.78.8) prior to this scheduled outage.

SSLVPN VPN Participants - Nil impacts to participants who utilise an AEMO RSA token and the AEMO SSLVPN client software to establish their VPN via the URL marketnetvpn.aemo.com.au

Support Information:
Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600.

AEMO ELECTRICITY MARKET NOTICE

The MTPASA result published on 11 July 2017 shows Low Reserve Conditions (LRC) in South Australia for November 2017, Summer 2017-18, March 2018, May 2018, Summer 2018-19, March 2019, and in Victoria for November 2017, Summer 2017-18, March 2018, Summer 2018-19, and March 2019. AEMO will continue to monitor the situation and take appropriate actions, if necessary.

To view the summary of MTPASA results for the next 24 months, visit AEMO's website at http://www.aemo.com.au/Electricity/National-Electricity-Market-NEM/Data-dashboard and click on the 'Medium Term Outlook' tab.

This notice supersedes Market Notice 58790 published on 4 July 2017.

Background
As part of a broader process of implementing the reliability standard, AEMO runs the Medium Term Projected Assessment of System Adequacy (MTPASA) process weekly to forecast capacity reserve conditions over a two year period.
AEMO may apply probabilistic studies such as Energy Adequacy Assessment Projection (EAAP) to confirm the LRC findings of MTPASA before intervening in the market.

For more information about how AEMO implements the reliability standard, please view the Reliability Standard Implementation Guidelines (RSIG) available on AEMO's website at
http://www.aemo.com.au/-/media/Files/Stakeholder_Consultation/Consultations/Electricity_Consultations/2016/EAAP/Reliability-Standard-Implementation-Guidelines.pdf

Supply Planning
AEMO

AEMO ELECTRICITY MARKET NOTICE

NON-CONFORMANCE QLD1 Region Sunday, 9 July 2017

AEMO declared a schedule generating unit non-conforming

Unit: MPP_2
Duration: 09/07/2017 10:30 to 09/07/2017 10:40
Amount: 72 MW
Constraint: NC-Q_MPP_2

Auto-generated on behalf of Manager NEM Real Time Operations