Market Notices

AEMO ELECTRICITY MARKET NOTICE

Issued by Australian Energy Market Operator Ltd at 1620 hrs on 17 September 2021

PRICES ARE SUBJECT TO REVIEW for dispatch interval 17-Sep-2021 16:25.

AEMO is reviewing these prices in accordance with:
- Clause 3.9.2B of the National Electricity Rules for Manifestly Incorrect Inputs


This is an AEMO autogenerated Market Notice.

Change Number: CHG0070185

Notification issued to: Market Notice

Notification Type: Initial

Change Type: Normal

Service/ Component: MSATS - Consumer Administration and Transfer Solution(CATS)

Change Title: This outage is to allow the deployment of MSATS and eEMDM Pre-Production as part of 5MS Market Trials . MSATS will be unavailable during this outage period.

Change Start Date & Time: 21/09/2021 18:00:00 AEST

Change End Date & Time: 22/09/2021 18:00:00 AEST

Outage Start Date & Time: 21/09/2021 18:00:00 AEST

Outage End Date & Time: 21/09/2021 20:00:00 AEST

Environment: Pre-Production

Participant Impact and Requirements: There will be no access to the Pre-Production MSATS system for the duration of the outage. Please access outside these hours.

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

AEMO ELECTRICITY MARKET NOTICE

Issued by Australian Energy Market Operator Ltd at 1605 hrs on 17 September 2021

ACTUAL NEGATIVE SETTLEMENT RESIDUES - QLD to NSW - 17 September 2021.

Electricity Market outcomes have resulted in the accumulation of negative settlement residues that have exceeded the allowable negative residue threshold for the QLD to NSW directional interconnector.

The negative residue constraint set NRM_QLD1_NSW1 commenced operating from 1605 hrs on 17 September 2021.

This constraint set contains an equation with the following interconnectors on the LHS:
N-Q-MNSP1
NSW1-QLD1

The RHS of the constraint equation may be adjusted to manage residues.


This is an AEMO autogenerated Market Notice.

AEMO ELECTRICITY MARKET NOTICE

Inter-regional transfer limit variation - Wodonga - Jindera 330 kV Line - Vic Region - 17/09/2021

A planned outage of Wodonga - Jindera 330 kV Line in the Vic region was scheduled from 0630 hrs 17/09/2021 to 1900 hrs 17/09/2021.

The return to service of the planned outage has been rescheduled for completion for 2300 hrs 17/09/2021

Constraint set(s) invoked:

I-JNWO_RADIAL
N-DPWG_63_X5
V-DBUSS_T
V-DBUSS_L

This constraint set(s) contains equations with the following interconnectors on the LHS.

N-Q-MNSP1
NSW1 - QLD1
T-V-MNSP1
V-SA
V-S-MNSP1
VIC1- NSW1

Refer to the AEMO Network Outage Scheduler for further information.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

The Heywood - South East No.1 line in the South Australia (SA) region is planned to be out of service as follows:
- 1700 hrs to 2300 hrs on 21/09/2021; and
- 1700 hrs to 2300 hrs on 22/09/2021.

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:

-When power transfer is from SA to Victoria, contingency lower FCAS will be sourced from SA.
-When power transfer is from Victoria 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.
-Power transfer will be restricted on Victoria - South Australia interconnector (Heywood interconnector) to manage system security following the loss of the next contingency.

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
I-HYSE
I-VS_050
S-HYSE
V-HYTX_M12

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

AEMO Operations

AEMO ELECTRICITY MARKET NOTICE

Network Augmentation Commissioned - VIC Region - 19/09/2021

Implementing Smartwires FACTS devices on 060 Jindera - Wodonga 330 kV line at the Wodonga 330kV terminal station has been completed and commenced operation at 1405 hrs on 19/09/2021.

The Smartwires FACTS device increases the NSW to VIC power transfer limit, determined by thermal ratings, by up to 15 MW.

The relevant constraint equations have been amended.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

AEMO declares a Forecast LOR1 condition under clause 4.8.4(b) of the National Electricity Rules for the SA region for the following periods:

1. From 1830 hrs 21/09/2021 to 2130 hrs 21/09/2021.
The forecast capacity reserve requirement is 434 MW.
The minimum capacity reserve available is 285 MW.

2. From 1900 hrs 22/09/2021 to 2030 hrs 22/09/2021.
The forecast capacity reserve requirement is 450 MW.
The minimum capacity reserve available is 411 MW.

AEMO Operations

AEMO ELECTRICITY MARKET NOTICE

Issued by Australian Energy Market Operator Ltd at 1400 hrs on 17 September 2021

CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - QLD to NSW - 17 September 2021.

Refer to market notice: 90611

AEMO has ceased taking action to minimize the further accumulation of negative settlement residues on the QLD to NSW directional interconnector.

The negative residue constraint NRM_QLD1_NSW1 ceased operating at 1400 hrs on 17 September 2021.

This is an AEMO autogenerated Market Notice.

AEMO ELECTRICITY MARKET NOTICE

Issued by Australian Energy Market Operator Ltd at 1340 hrs on 17 September 2021

PRICES ARE NOW CONFIRMED for dispatch interval 17-Sep-2021 13:20.

In accordance with Market Notice 90604 AEMO has reviewed this dispatch interval and determined that:
- Manifestly Incorrect Inputs did not apply

Prices remain unchanged.


This is an AEMO autogenerated Market Notice.