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110825GENERAL NOTICE05/11/2023 07:42:32 PM
Severe Space Weather Watch Notification 05/11/2023
AEMO ELECTRICITY MARKET NOTICE
Severe Space Weather Watch Notification 05/11/2023
The Australian Bureau of Meteorology's Space Weather Forecasting Centre has issued the following notification.
Severe space weather watch: A recent space weather event is anticipated to impact the Earth within the next 48 hours.
The effects are expected to be significant.
Increased awareness of critical infrastructure is advised.
Please monitor the SWS website for further updates at https://www.sws.bom.gov.au
If required; actions will be taken as per AEMO's system operating procedure SO_OP3715 Power System Security Guidelines.
Manager NEM Real Time Operations
Severe Space Weather Watch Notification 05/11/2023
The Australian Bureau of Meteorology's Space Weather Forecasting Centre has issued the following notification.
Severe space weather watch: A recent space weather event is anticipated to impact the Earth within the next 48 hours.
The effects are expected to be significant.
Increased awareness of critical infrastructure is advised.
Please monitor the SWS website for further updates at https://www.sws.bom.gov.au
If required; actions will be taken as per AEMO's system operating procedure SO_OP3715 Power System Security Guidelines.
Manager NEM Real Time Operations
110678CONSTRAINTS02/11/2023 12:08:31 PM
Updated Victorian system normal voltage oscillation limit
AEMO ELECTRICITY MARKET NOTICE
AEMO has completed a comprehensive review on voltage oscillation issue in south-west Victoria with consideration of wider asynchronous generators in the area. The voltage oscillation occurs in the south-west region when Heywood interconnector flow is higher than 500 MW from South Australia to Victoria.
The limit will manage the total MW output from Stockyard Hill, Dundonnell and Macarthur wind farms during period when flow on Heywood interconnector higher than 500 MW towards Victoria.
The new constraint equation includes asynchronous generators in south-west Victoria on the left-hand side. This limit is to replace the existing south-west Victoria voltage oscillation limit. Full details on the limits advice are to be published shortly on the AEMO website: https://aemo.com.au/energy-systems/electricity/national-electricity-market-nem/system-operations/congestion-information-resource/limits-advice
The following changes will be implemented at 1000 hrs on Friday 3rd November 2023
? Constraint equation will be removed from constraint set V-NIL:
V_SHWF_FLT_286
? Constraint equation will be implemented and added to constraint set V-NIL:
V_SH_DD_MAC_FLT_965
For full details on the formulation, the new constraint equation has now been loaded into AEMO's pre-production systems.
For further details on this change please contact terry.liu@aemo.com.au
Terry Liu
AEMO Operations
AEMO has completed a comprehensive review on voltage oscillation issue in south-west Victoria with consideration of wider asynchronous generators in the area. The voltage oscillation occurs in the south-west region when Heywood interconnector flow is higher than 500 MW from South Australia to Victoria.
The limit will manage the total MW output from Stockyard Hill, Dundonnell and Macarthur wind farms during period when flow on Heywood interconnector higher than 500 MW towards Victoria.
The new constraint equation includes asynchronous generators in south-west Victoria on the left-hand side. This limit is to replace the existing south-west Victoria voltage oscillation limit. Full details on the limits advice are to be published shortly on the AEMO website: https://aemo.com.au/energy-systems/electricity/national-electricity-market-nem/system-operations/congestion-information-resource/limits-advice
The following changes will be implemented at 1000 hrs on Friday 3rd November 2023
? Constraint equation will be removed from constraint set V-NIL:
V_SHWF_FLT_286
? Constraint equation will be implemented and added to constraint set V-NIL:
V_SH_DD_MAC_FLT_965
For full details on the formulation, the new constraint equation has now been loaded into AEMO's pre-production systems.
For further details on this change please contact terry.liu@aemo.com.au
Terry Liu
AEMO Operations
110677CONSTRAINTS02/11/2023 10:53:49 AM
Update to voltage stability and system strength constraints in North Queensland
AEMO ELECTRICITY MARKET NOTICE
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
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
110671GENERAL NOTICE01/11/2023 03:17:07 PM
Network Augmentation Commissioned - Qld Region - 01/11/2023
AEMO ELECTRICITY MARKET NOTICE
Network Augmentation Commissioned - Qld Region - 01/11/2023
Commissioned: Ross - Woree No. 8905 275 kV Line
Manager NEM Real Time Operations
Network Augmentation Commissioned - Qld Region - 01/11/2023
Commissioned: Ross - Woree No. 8905 275 kV Line
Manager NEM Real Time Operations
110647GENERAL NOTICE31/10/2023 02:14:14 PM
Fast Frequency Response Market - Increase in R1 volume 6 November 2023 - Additional Constraint changes
AEMO ELECTRICITY MARKET NOTICE
Refer to market notice 110645
Additional system normal contingency risks, including trip of APD load, potential operation of the GFT and TTS control schemes, and trip of Basslink will be included when determining FCAS requirements from 6th November. These constraint equations have been added to the constraint set F-I_FFR_GLOBAL_2 which is now invoked from 1300hrs on 6th November.
Ben Blake
AEMO Operations
Refer to market notice 110645
Additional system normal contingency risks, including trip of APD load, potential operation of the GFT and TTS control schemes, and trip of Basslink will be included when determining FCAS requirements from 6th November. These constraint equations have been added to the constraint set F-I_FFR_GLOBAL_2 which is now invoked from 1300hrs on 6th November.
Ben Blake
AEMO Operations
110645GENERAL NOTICE31/10/2023 12:52:20 PM
Fast Frequency Response Market - Increase in R1 volume 6 November 2023
AEMO ELECTRICITY MARKET NOTICE
Following review of the operation of the Very Fast FCAS market, AEMO will increase the cap on dispatch of Very Fast Raise (R1) Contingency FCAS from 50 MW to 100 MW on Monday 6th November from 1300 hrs AEST.
The cap on Very Fast Lower (L1) Contingency FCAS will remain unchanged at 50 MW.
A range of additional system-normal contingency risks will also be considered considered when determining Very Fast FCAS requirements from this time.
For information on the Fast Frequency Response (FFR) initiative please visit the website at: https://www.aemo.com.au/initiatives/major-programs/fast-frequency-response
Andrew Groom
AEMO Operations
Following review of the operation of the Very Fast FCAS market, AEMO will increase the cap on dispatch of Very Fast Raise (R1) Contingency FCAS from 50 MW to 100 MW on Monday 6th November from 1300 hrs AEST.
The cap on Very Fast Lower (L1) Contingency FCAS will remain unchanged at 50 MW.
A range of additional system-normal contingency risks will also be considered considered when determining Very Fast FCAS requirements from this time.
For information on the Fast Frequency Response (FFR) initiative please visit the website at: https://www.aemo.com.au/initiatives/major-programs/fast-frequency-response
Andrew Groom
AEMO Operations
110640GENERAL NOTICE31/10/2023 10:39:20 AM
QNI Minor testing (NSW to Qld) 31st October 2023
AEMO ELECTRICITY MARKET NOTICE
Refer to market notice 110274
There is an opportunity for testing QNI Minor for flows from NSW to Qld up to 750 MW on Tuesday 31st October from 1200 to 1700hrs.
This test includes a trip and reclose of a line in northern NSW.
Please also refer to the published formal QNI minor testing information at the following link:
https://www.aemo.com.au/consultations/current-and-closed-consultations/qld-to-nsw-interconnector-qni-upgrade
Ben Blake
AEMO Operations
Refer to market notice 110274
There is an opportunity for testing QNI Minor for flows from NSW to Qld up to 750 MW on Tuesday 31st October from 1200 to 1700hrs.
This test includes a trip and reclose of a line in northern NSW.
Please also refer to the published formal QNI minor testing information at the following link:
https://www.aemo.com.au/consultations/current-and-closed-consultations/qld-to-nsw-interconnector-qni-upgrade
Ben Blake
AEMO Operations
110600GENERAL NOTICE30/10/2023 10:09:33 AM
Update - Vulnerable lines in TAS region.
AEMO ELECTRICITY MARKET NOTICE.
Vulnerable lines in TAS region.
Refer to AEMO Electricity Market Notice 110350.
At 2029 hrs 21/10/2023 the Waddamana - Tungatinah No.1 and No.2 110kV lines tripped and auto reclosed.
The cause of trip was identified as due to lightning.
In accordance with SO_OP_3715, AEMO now considers the Waddamana - Tungatinah No.1 and No.2 110kV lines to be vulnerable with a category of probable due to lightning.
AEMO Operations
Vulnerable lines in TAS region.
Refer to AEMO Electricity Market Notice 110350.
At 2029 hrs 21/10/2023 the Waddamana - Tungatinah No.1 and No.2 110kV lines tripped and auto reclosed.
The cause of trip was identified as due to lightning.
In accordance with SO_OP_3715, AEMO now considers the Waddamana - Tungatinah No.1 and No.2 110kV lines to be vulnerable with a category of probable due to lightning.
AEMO Operations
110535GENERAL NOTICE27/10/2023 10:38:14 AM
NEM Local Temperature Alerts for QLD from 27 Oct 2023 to 31 Oct 2023
AEMO ELECTRICITY MARKET NOTICE
AEMO's weather service provider has issued forecast temperatures equal to or greater than the NEM Local Temperature Alert Levels for listed weather stations below.
QLD
Dalby Ap (37+ Deg C): 31st Oct
The NEM Local Temperature Alert Levels are:
Launceston Ti Tree Bend: 33 Deg C, Dalby Airport: 37 Deg C, for all other selected weather stations: 39 Deg C.
AEMO requests Market Participants to:
1. review the weather forecast in the local area where their generating units / MNSP converter stations are located and,
2. if required, update the available capacity in their dispatch offers or availability submissions consistent with the forecast temperatures.
Further information is available at:
https://aemo.com.au/energy-systems/electricity/national-electricity-market-nem/nem-forecasting-and-planning/forecasting-and-reliability/projected-assessment-of-system-adequacy/nem-local-temperature-alerts
AEMO Operations Planning
AEMO's weather service provider has issued forecast temperatures equal to or greater than the NEM Local Temperature Alert Levels for listed weather stations below.
QLD
Dalby Ap (37+ Deg C): 31st Oct
The NEM Local Temperature Alert Levels are:
Launceston Ti Tree Bend: 33 Deg C, Dalby Airport: 37 Deg C, for all other selected weather stations: 39 Deg C.
AEMO requests Market Participants to:
1. review the weather forecast in the local area where their generating units / MNSP converter stations are located and,
2. if required, update the available capacity in their dispatch offers or availability submissions consistent with the forecast temperatures.
Further information is available at:
https://aemo.com.au/energy-systems/electricity/national-electricity-market-nem/nem-forecasting-and-planning/forecasting-and-reliability/projected-assessment-of-system-adequacy/nem-local-temperature-alerts
AEMO Operations Planning