Market Notices

AEMO ELECTRICITY MARKET NOTICE

Refer to AEMO Market Notice 97705

Typographical error in Market Notice 97705 - reference to NER Clause 3.14.3(s)(3) should read 3.14.3(a)(3).

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE
Declaration of electricity market suspension
AEMO declares the spot market suspended in New South Wales, Queensland, South Australia, Tasmania and Victoria with Market Suspension Schedule Pricing (refer NER clause 3.14.5(b)) from Trading Interval 1405 hrs on 15 June 2022 until further notice.
Dispatch prices for the first one or two dispatch intervals of this market suspension will be reviewed manually.
AEMO has determined that it is necessary to suspend the spot market in all regions under NER clause 3.14.3(s)3) because it has become impossible to operate the spot market in accordance with the provisions of the Rules.
Manager NEM Real Time Operation

AEMO ELECTRICITY MARKET NOTICE
Declaration of electricity market suspension
AEMO declares the spot market suspended in New South Wales, Queensland, South Australia, Tasmania and Victoria with Market Suspension Schedule Pricing (refer NER clause 3.14.5(b)) from Trading Interval 1405 hrs on 15 June 2022 until further notice.
Dispatch prices for the first one or two dispatch intervals of this market suspension will be reviewed manually.
AEMO has determined that it is necessary to suspend the spot market in all regions under NER clause 3.14.3(s)3) because it has become impossible to operate the spot market in accordance with the provisions of the Rules.
Manager NEM Real Time Operation

AEMO ELECTRICITY MARKET NOTICE.

AEMO has identified that the conditions of the following protected event are no longer met.

Protected event: the loss of multiple transmission elements causing generation disconnection in the South Australia region during periods where destructive wind conditions are forecast by the Bureau of Meteorology.

Cancellation: 0530 hrs 05/06/2022

Constraint set revoked: I-VS_250

Refer AEMO Electricity Market Notice 96776

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE.

AEMO has identified that the conditions of the following protected event will be met from the time specified in this notice.

Protected event: the loss of multiple transmission elements causing generation disconnection in the South Australia region during periods where destructive wind conditions are forecast by the Bureau of Meteorology.

Duration: 1915 hrs 04/06/2022 until further notice

AEMO will take action to manage the power system for the impact of the protected event.

Constraint set(s) invoked: I-VS_250

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Refer to AEMO Electricity Market Notice 96666.

Please provide Generator Recall Information for 02/06/2022 by 1400 hrs AEST on 01/06/2022 via the Generator Recall communication system, in accordance with clause 4.8.5A of the National Electricity Rules.

SO_OP_3719 Procedure for Submitting Generator Outage Recall Information is available at:
https://www.aemo.com.au/-/media/files/electricity/nem/security_and_reliability/power_system_ops/procedures/so_op_3719-procedure-for-submitting-recall-information-scheduled-generator-outages.pdf

Procedure on how to use Generator Recall in the EMMS Markets Portal is available at
http://www.aemo.com.au/-/media/Files/Electricity/NEM/IT-Systems-and-Change/2018/Guide-to-Generator-Recall-Plans.pdf

AEMO Operations

AEMO ELECTRICITY MARKET NOTICE

Refer to AEMO Electricity Market Notice 96668.

Please provide Generator Recall Information for 02/06/2022 by 1400 hrs AEST on 01/06/2022 via the Generator Recall communication system, in accordance with clause 4.8.5A of the National Electricity Rules.

SO_OP_3719 Procedure for Submitting Generator Outage Recall Information is available at:
https://www.aemo.com.au/-/media/files/electricity/nem/security_and_reliability/power_system_ops/procedures/so_op_3719-procedure-for-submitting-recall-information-scheduled-generator-outages.pdf

Procedure on how to use Generator Recall in the EMMS Markets Portal is available at
http://www.aemo.com.au/-/media/Files/Electricity/NEM/IT-Systems-and-Change/2018/Guide-to-Generator-Recall-Plans.pdf

AEMO Operations

AEMO ELECTRICITY MARKET NOTICE

AEMO has completed a comprehensive review of the system normal transient stability limit for loss of a Hazelwood to South Morang 500 kV line for flows from Victoria to New South Wales. The revised limit takes into account a larger range of inertias, demands, interconnector flows and many different plants online. The revised limit is generally lower than the existing limit due to lower demands and inertias in the Victorian system since the last review back in 2016. However, it is expected the revised limit will normally be under-cut by the Victorian export voltage collapse limit for loss of all APD potlines.

The revised constraint equation includes generators in southern NSW and generation in Victoria on the left-hand side as well as interconnectors. Full details on the limits advice are to be published on 04/04/2022 on the AEMO website: https://aemo.com.au/energy-systems/electricity/national-electricity-market-nem/system-operations/congestion-information-resource/limits-advice

This revised limit will be implemented to the Victorian system normal constraint set V-NIL at 1000 hrs Tuesday 5th April 2022, with the following changes:

Constraint equations to remove:
- V::N_NIL_V
- V::N_NIL_S
- V::N_NIL_Q1
- V::N_NIL_Q2
Constraint equations to add:
- V::N_NIL_V1
- V::N_NIL_V2
- V::N_NIL_O1
- V::N_NIL_O2

These constraint equation changes have already been applied in AEMO's PreProduction systems.

For further details on the constraint equations please contact terry.liu@aemo.com.au

Terry Liu
AEMO Operations

AEMO ELECTRICITY MARKET NOTICE
Declaration of electricity market resumption

Refer initial AEMO Electricity Market Notice 94979

AEMO declares that the suspension of the spot market in Tasmania will end at 1915 hrs on 1 March 2022.


Relevant Market Notices issued under this suspension:
94979
Manager NEM Real Time Operations