AEMO ELECTRICITY MARKET NOTICE

This market notice is FOR INFORMATION ONLY.


The Heywood No.1 500 kV busbar in Victoria Region which was planned to be out of service from 03/07/2017 0600 hrs - 03/07/2017 1800 hrs.

A credible contingency event during this planned outage could cause synchronous separation of the South Australia (SA) region from the rest of the NEM. If separation occurs, load may be interrupted due to the operation of the Automatic Under Frequency Load Shedding (AUFLS) scheme in SA.

The credible separation contingency is managed as follows:

o 35 MW of raise and lower regulation FCAS will be sourced from SA.
o When power transfer is from SA to Victoria (Vic), contingency lower FCAS will be sourced from SA.
o When power transfer is from Vic to SA, due to the 47-52Hz island separation frequency band advised by the SA jurisdiction, contingency raise FCAS is not sourced in SA and the AUFLS scheme may respond to low frequency events.
o Power transfer will be restricted on Victoria - South Australia interconnector (Heywood interconnector).

Forecast capacity reserves in the SA region are currently sufficient to meet electricity demand during the planned outage.

The following constraint sets have been invoked for this outage:

F-I_HYSE (includes F-S_LREG_0035 and F-S_RREG_0035)
S-X_BC_CP
V-HYTX_M12
V-HY_500BUS
I-VS_050

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

Diyoni Hoole
AEMO Operations

AEMO ELECTRICITY MARKET NOTICE

NON-CONFORMANCE VIC1 Region Friday, 23 June 2017

AEMO declared a schedule generating unit non-conforming

Unit: JLA01
Duration: 23/06/2017 11:35 to 23/06/2017 11:45
Amount: -20 MW
Constraint: NC-V_JLA01

Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

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

The following constraint set was invoked at 0425 hrs.

N-MBTE_1

The outage constraint set contains the following interconnector on the left hand side.

N-Q-MNSP1

See AEMO Network Outage Scheduler (NOS) for details.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

NON-CONFORMANCE QLD1 Region Thursday, 22 June 2017

AEMO declared a schedule generating unit non-conforming

Unit: STAN-2
Duration: 22/06/2017 12:45 to 22/06/2017 12:55
Amount: -9 MW
Constraint: NC-Q_STAN-2

Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Inter regional transfer limit variation Armidale SVC outage 22/06/17
There is an unplanned outage of the Armidale SVC in the NSW region
Constraint set N-AR_VC1 is invoked from 1210 hrs until further notice
The containt set contains equations with the following interconnectors on the LHS
N-Q-MNSP1
NSW1-QLD1
Refer to the AEMO Network Outage Schedule for further information.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

NON-CONFORMANCE NSW1 Region Thursday, 22 June 2017

AEMO declared a schedule generating unit non-conforming

Unit: SITHE01
Duration: 22/06/2017 05:30 to 22/06/2017 05:40
Amount: 41 MW
Constraint: NC-N_SITHE01

Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

There has been an unplanned outage of the No 2. Leg of Directlink

The following constraint set was invoked at 1305 hrs.

N-MBTE_1

The outage constraint set contains the following interconnector on the left hand side.

N-Q-MNSP1

See AEMO Network Outage Scheduler (NOS) for details.

Manager NEM Real Time Operations

Change Number: CHG0043870

Notification issued to: Market Notice

Notification Type: Initial

Change Type: Normal

Service/ Component: EMMS - Data Interchange

Change Title: Planned System Change - 2017/18 update of the MPC/CPT values in EMMS Production

Change Start Date & Time: 23/06/2017 08:00:00 AEST

Change End Date & Time: 23/06/2017 17:00:00 AEST

Outage Start Date & Time:

Outage End Date & Time:

Change Description:

Please see attached Change Notice

Environment: Production

Participant Impact and Requirements:

This change details the implementation of Transmission Loss Factors (TLFs), Interconnector Loss Models (ILMs), and Distribution Loss factors (DLFs) Values to be loaded on 23 June 2017, with effective date of 1 July 2017 in production.
Details of the methodology and specific loss factors are not covered by the change.

Values will be loaded on 23 June 2017, with effective date of 1 July 2017. This change also covers the updating of the following:

Market Price Cap, Market Floor Price and Cumulative Price Threshold values as published on the AEMC website.

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 20 June 2017 shows Low Reserve Conditions (LRC) in South Australia for November 2017, Summer 2017-18, March 2018, Summer 2018-19, March 2019, and in Victoria for 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 58721 published on 13 June 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