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Update to voltage stability and system strength constraints in North Queensland
Refer to market notice 102074
AEMO and Powerlink are continuing to investigate system strength requirements in North Queensland.
Due to commissioning of new feeder 8905 (H13 Ross - H39 Woree) 275kV line in Far North Queensland, the system normal equations for system strength and voltage stability have been revised.
A revision to the constraint equations will be implemented at 1400 hrs on Thursday 2nd November 2023.
The new system strength combinations have now published in a limits advice document on AEMO's website. For more information refer to the new limits advice: https://www.aemo.com.au/energy-systems/electricity/national-electricity-market-nem/system-operations/congestion-information-resource/limits-advice
This advice contains all the combinations for Queensland for system normal cases.
The constraint equations in the Q-NIL set below will be modified:
? Q_NIL_STRGTH_KBWF
? Q_NIL_STRGTH_KBWF
? Replace Q^NIL_FNQ_MEWF and Q^NIL_FNQ_WRSVC with new equation Q^NIL_FNQ_8905
AEMO Operations
Cancellation of Actual (LOR2) condition in the SA region - 27/10/2023
Cancellation of Actual (LOR2) condition in the SA region - 27/10/2023
The Actual LOR2 Condition in the SA Region advised in AEMO Electricity Market Notice No.110559 is cancelled at 2015 hrs 27/10/2023.
Manager NEM Real Time Operations
Actual Lack Of Reserve Level 2 (LOR2) in the SA region - 27/10/2023
Actual Lack Of Reserve Level 2 (LOR2) in the SA region - 27/10/2023
An Actual LOR2 condition has been declared under clause 4.8.4(b) of the National Electricity Rules for the SA region from 1930 hrs.
The Actual LOR2 condition is not forecast in Pre Dispatch
The capacity reserve required is 480 MW
The minimum reserve available is 465 MW
AEMO is seeking an immediate market response.
An insufficient market response may require AEMO to implement a AEMO intervention event.
Manager NEM Real Time Operations
Update - PDPASA - Cancellation of the Actual Lack Of Reserve Level 2 (LOR2) in the NSW Region on 25/05/2023
The Actual LOR2 condition in the NSW region advised in AEMO Electricity Market Notice No. 108160 is cancelled at 2045 hrs 25/05/2023.
Manager NEM Real Time Operations
PDPASA - Cancellation of the Actual Lack Of Reserve Level 2 (LOR2) in the NSW Region on 25/05/2023
The Actual LOR2 condition in the NSW region advised in AEMO Electricity Market Notice No. 108160 is cancelled at 2145 hrs 25/05/2023.
Manager NEM Real Time Operations
Actual Lack Of Reserve Level 2 (LOR2) in the NSW Region on 25/05/2023
Actual Lack Of Reserve Level 2 (LOR2) in the NSW region - 25/05/2023
An Actual LOR2 condition has been declared under clause 4.8.4(b) of the National Electricity Rules for the NSW region from 2000 hrs.
The Actual LOR2 condition is forecast to exist until 2030 hrs.
The forecast capacity reserve requirement is 851 MW.
The minimum capacity reserve available is 767 MW.
AEMO is seeking an immediate market response.
An insufficient market response may require AEMO to implement an AEMO intervention event.
Manager NEM Real Time Operations
Tasmanian Regulation FCAS changes - Wednesday 5th April 2023
AEMO are changing the procurement of Regulation FCAS for the TAS region.
This change is based on advice received from TasNetworks, following a review of operation of the TAS region with the end of the reclassification of Basslink.
Refer to AEMO Electricity market notice 105443.
Following this change Regulation FCAS requirements for the TAS region will only be procured from within TAS.
This change will be implemented from 1000 on Wed 5th April.
Ben Blake
Manager Congestion & Grid Modelling
Update to Victorian system normal constraint equations ID
AEMO has been conducting major review of thermal constraint equations for preparation of completion of VNI East project. As part of the review, AEMO is going to update the constraint equations IDs to use the new standard format of below (this is the same standard now used in NSW):
V>>[OUTAGE]_[MONITORING ELEMENT]_[CONTINGENCY ELEMENT]
This is to improve the simplicity and readability of a thermal constraint equation ID.
Constraint equations ID in sets V-NIL and V-NIL_BATS_BETS_15M will be updated to the new format on Thursday 23rd March 2023 at 1000 hrs. The previous used constraint equations ID will be included in the Modification field of the constraint equation for reference.
The changes have now been implemented into AEMO's pre-production system.
Terry Liu
AEMO Operations
Cancellation of Actual (LOR2) condition in the NSW region - 16/03/2023
Cancellation of Actual (LOR2) condition in the NSW region - 16/03/2023
The Actual LOR2 Condition in the NSW Region advised in AEMO Electricity Market Notice No.106716 is cancelled at 1855hrs 16/03/2023
Manager NEM Real Time Operations