Market Notices

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: VIC1

Lines: Dederang - Glenrowan No.1 220 kV and Dederang - Glenrowan No.3 220 kV

Cancellation time: 10/07/2020 15:13

Constraint set(s) revoked:
V-DDGN_N-2 Constraint set contains the following interconnector(s) on the left hand side:
V-S-MNSP1
VIC1-NSW1


Refer AEMO Electricity Market Notice 76244

Auto-generated on behalf of Manager NEM Real Time Operations

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: VIC1

Lines: Dederang - Glenrowan No.1 220 kV and Dederang - Glenrowan No.3 220 kV

Duration: 10/07/2020 12:09 until further notice

Constraint set(s) invoked:
V-DDGN_N-2 Constraint set contains the following interconnector(s) on the left hand side:
V-S-MNSP1
VIC1-NSW1


Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

NON-CONFORMANCE QLD1 Region Friday, 10 July 2020

AEMO declared a schedule generating unit non-conforming

Unit: GSTONE2
Duration: 10/07/2020 00:55 to 10/07/2020 01:00
Amount: 16 MW
Constraint: NC-Q_GSTONE2

Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE.

Inter-regional transfer limit variation - Heywood - Tarrone 500 kV Line - Vic region - 09/07/2020

The planned outage of the Heywood - Tarrone 500 kV Line was scheduled to be completed at 2100 hrs 09/07/2020.

The planned outage has been completed early.

The following constraint sets were revoked at 1940 hrs 09/07/2020

I-VS_050
S-X_BC_CP
V-HYTR

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

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

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

Manager NEM Real Time Operations

Change Number: CHG0060072

Notification issued to: Market Notice

Notification Type: Initial

Change Type: Normal

Service/ Component: MSATS - Business to Business data exchange

Change Title: Production cutover of Gas FRC Hub and Electricity retail B2B system (webMethods upgrade)

Change Start Date & Time: 19/07/2020 09:00:00 AEST

Change End Date & Time: 19/07/2020 21:00:00 AEST

Outage Start Date & Time: 19/07/2020 10:00:00 AEST

Outage End Date & Time: 19/07/2020 21:00:00 AEST

Change Description:
AEMO is performing maintenance activity on the Gas Hub and Electricity B2B Hub across the outage window.
This involves upgrading the webMethods platform to version 10.3
Environment: Production

Participant Impact and Requirements:
The following impacts are expected during this maintenance:
- All access to the Electricity B2B Hub will be unavailable.
- All access to the Gas B2B Hub and all ebXML gateways (AEMOMIBB, AGNLGWY, LVI & VENCORP) will be unavailable. CATS and MDMT transactions for VIC/QLD will be delayed during the maintenance window.
- Users are not required to take any action due to this change.
Support Information:

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

Change Number: CHG0059892

Notification issued to: Market Notice

Notification Type: Initial

Change Type: Normal

Service/ Component: Short Term Trading Market

Change Title: Planned System Outage - STTM Pre-Production Systems

Change Start Date & Time: 14/07/2020 09:00:00 AEST

Change End Date & Time: 14/07/2020 17:00:00 AEST

Outage Start Date & Time: 14/07/2020 09:00:00 AEST

Outage End Date & Time: 14/07/2020 17:00:00 AEST

Change Description:

Maintenance activities to be performed on the Gas Short Term Trading Market Systems Pre-Production.

Environment: Pre-Production

Participant Impact and Requirements:

This is a regular procedure to allow routine maintenance. All access to the following systems will be unavailable.

Pre-Production Gas Short Term Trading Market (STTM)

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

AEMO ELECTRICITY MARKET NOTICE

Refer AEMO Electricity Market Notice 76238

The No 3 Leg of Directlink has been returned to service

The following constraint set was revoked at 0945 hrs 09/07/2020.

N-X_MBTE_3

The 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

Inter-Regional Transfer limit variation - Directlink - NSW Region

There has been an unplanned outage of equipment of Directlink

The following constraint set was invoked at 0915 hrs 09/07/2020.

N-X_MBTE_3

The 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

NON-CONFORMANCE QLD1 Region Thursday, 9 July 2020

AEMO declared a schedule generating unit non-conforming

Unit: MPP_2
Duration: 09/07/2020 03:55 to 09/07/2020 04:00
Amount: -11 MW
Constraint: NC-Q_MPP_2

Auto-generated on behalf of Manager NEM Real Time Operations