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75784CONSTRAINTS22/05/2020 11:26:07 AM
New system normal constraint equation in Victoria for voltage collapse on trip of Ballarat - Waubra - Ararat line
AEMO ELECTRICITY MARKET NOTICE
In the event of a trip of the Ballarat - Waubra - Ararat 220 kV line the Ararat, Crowlands, Bulgana, Murra Warra and Waubra wind farms will be tripped off. AEMO has completed work on a revised voltage collapse limit for this contingency which will replace the existing 600 MW cap on these generators. FCAS constraint equations have also been developed for this contingency.
The energy constraint equation includes generators in south-west NSW and north-west Victoria on the left-hand side as well as VIC1-NSW1.
The following constraint equations will be implemented at 1000 hrs Monday 25th May 2020.
N^^V_NIL_ARWBBA
F_I+GFT_TG_R6
F_I+GFT_TG_R60
F_I+GFT_TG_R5
F_MAIN++GFT_TG_R6
F_MAIN++GFT_TG_R60
F_MAIN++GFT_TG_R5
F_MAIN+GFT_TG_R6
F_MAIN+GFT_TG_R60
F_MAIN+GFT_TG_R5
The following constraint equation will be removed:
V^V_NIL_ARWBBA
For further details on these new constraint equations please contact ben.blake@aemo.com.au
Ben Blake
AEMO Operations
In the event of a trip of the Ballarat - Waubra - Ararat 220 kV line the Ararat, Crowlands, Bulgana, Murra Warra and Waubra wind farms will be tripped off. AEMO has completed work on a revised voltage collapse limit for this contingency which will replace the existing 600 MW cap on these generators. FCAS constraint equations have also been developed for this contingency.
The energy constraint equation includes generators in south-west NSW and north-west Victoria on the left-hand side as well as VIC1-NSW1.
The following constraint equations will be implemented at 1000 hrs Monday 25th May 2020.
N^^V_NIL_ARWBBA
F_I+GFT_TG_R6
F_I+GFT_TG_R60
F_I+GFT_TG_R5
F_MAIN++GFT_TG_R6
F_MAIN++GFT_TG_R60
F_MAIN++GFT_TG_R5
F_MAIN+GFT_TG_R6
F_MAIN+GFT_TG_R60
F_MAIN+GFT_TG_R5
The following constraint equation will be removed:
V^V_NIL_ARWBBA
For further details on these new constraint equations please contact ben.blake@aemo.com.au
Ben Blake
AEMO Operations
75618CONSTRAINTS08/05/2020 11:49:59 AM
New system normal constraint equation in NSW for voltage collapse at Darlington Point
AEMO ELECTRICITY MARKET NOTICE
Following advice from TransGrid a new/revised system normal constraint equation
TransGrid has advised AEMO of a new voltage collapse limit in southern NSW. The voltage collapse occurs at Darlington Point on loss of the Darlington Point to Wagga (63) 330 kV line. The limit is for pre-contingent flow on 63 line. The constraint equation includes generators in south-west NSW and north-west Victoria on the left-hand side as well as Murraylink.
The following constraint equation will be implemented at 1000 hrs Monday 11th May 2020:
N^^N_NIL_2
For further details on this new constraint equation please contact ben.blake@aemo.com.au
Ben Blake
AEMO Operations
Following advice from TransGrid a new/revised system normal constraint equation
TransGrid has advised AEMO of a new voltage collapse limit in southern NSW. The voltage collapse occurs at Darlington Point on loss of the Darlington Point to Wagga (63) 330 kV line. The limit is for pre-contingent flow on 63 line. The constraint equation includes generators in south-west NSW and north-west Victoria on the left-hand side as well as Murraylink.
The following constraint equation will be implemented at 1000 hrs Monday 11th May 2020:
N^^N_NIL_2
For further details on this new constraint equation please contact ben.blake@aemo.com.au
Ben Blake
AEMO Operations
75482CONSTRAINTS27/04/2020 12:59:44 PM
Update to system strength requirements in North Queensland
AEMO ELECTRICITY MARKET NOTICE
Refer to market notice 75226
AEMO and Powerlink are continuing to investigate system strength requirements in North Queensland. A revision to the requirements will be implemented at 1400 hrs today.
The revised minimum generator combinations and limits are:
1 - 3 x Stanwell, 1 x Callide B, 1 x Callide C, 3 x Gladstone, 10 x Total Stanwell+Callide+Gladstone, 4 x Kareeya, 2 x Barron Gorge: 100% output
2 - 3 x Stanwell, 1 x Callide B, 1 x Callide C, 3 x Gladstone, 10 x Total Stanwell+Callide+Gladstone, 4 x Kareeya, 1 x Barron Gorge: 80% output
3 - 3 x Stanwell, 1 x Callide B, 1 x Callide C, 3 x Gladstone, 10 x Total Stanwell+Callide+Gladstone, 2 x Kareeya, 1 x Townsville GT: 80% output
4 - 3 x Stanwell, 1 x Callide B, 1 x Callide C, 3 x Gladstone, 10 x Total Stanwell+Callide+Gladstone, 2 x Kareeya, 1 x Barron Gorge: 70% output
4H - 3 x Stanwell, 1 x Callide B, 1 x Callide C, 3 x Gladstone, 10 x Total Stanwell+Callide+Gladstone, 2 x Kareeya, 1 x Barron Gorge, 50% or less output at Mt Emerald: 100% output for Haughton solar farm
5 - 3 x Stanwell, 1 x Callide B, 1 x Callide C, 3 x Gladstone, 10 x Total Stanwell+Callide+Gladstone, 4 x Kareeya: 70% output
The following new combination will also be implemented:
6- 3 x Stanwell, 2 x Callide C, 3 x Gladstone, 9 x Total Stanwell+Callide+Gladstone, 4 x Kareeya: 20% output
If these combinations are not met, Mt Emerald WF, Sun metals SF and Haughton SF have a limit of 0 MW and 0 inverters.
The constraint equations are: Q_NIL_STRGTH_MEWF, Q_NIL_STRGTH_HAUSF, Q_NIL_STRGTH_SMSF.
For further details please contact James Lindley at james.lindley@aemo.com.au or Simon Taylor at businessdevelopment@powerlink.com.au
Mya San
AEMO Operations
Refer to market notice 75226
AEMO and Powerlink are continuing to investigate system strength requirements in North Queensland. A revision to the requirements will be implemented at 1400 hrs today.
The revised minimum generator combinations and limits are:
1 - 3 x Stanwell, 1 x Callide B, 1 x Callide C, 3 x Gladstone, 10 x Total Stanwell+Callide+Gladstone, 4 x Kareeya, 2 x Barron Gorge: 100% output
2 - 3 x Stanwell, 1 x Callide B, 1 x Callide C, 3 x Gladstone, 10 x Total Stanwell+Callide+Gladstone, 4 x Kareeya, 1 x Barron Gorge: 80% output
3 - 3 x Stanwell, 1 x Callide B, 1 x Callide C, 3 x Gladstone, 10 x Total Stanwell+Callide+Gladstone, 2 x Kareeya, 1 x Townsville GT: 80% output
4 - 3 x Stanwell, 1 x Callide B, 1 x Callide C, 3 x Gladstone, 10 x Total Stanwell+Callide+Gladstone, 2 x Kareeya, 1 x Barron Gorge: 70% output
4H - 3 x Stanwell, 1 x Callide B, 1 x Callide C, 3 x Gladstone, 10 x Total Stanwell+Callide+Gladstone, 2 x Kareeya, 1 x Barron Gorge, 50% or less output at Mt Emerald: 100% output for Haughton solar farm
5 - 3 x Stanwell, 1 x Callide B, 1 x Callide C, 3 x Gladstone, 10 x Total Stanwell+Callide+Gladstone, 4 x Kareeya: 70% output
The following new combination will also be implemented:
6- 3 x Stanwell, 2 x Callide C, 3 x Gladstone, 9 x Total Stanwell+Callide+Gladstone, 4 x Kareeya: 20% output
If these combinations are not met, Mt Emerald WF, Sun metals SF and Haughton SF have a limit of 0 MW and 0 inverters.
The constraint equations are: Q_NIL_STRGTH_MEWF, Q_NIL_STRGTH_HAUSF, Q_NIL_STRGTH_SMSF.
For further details please contact James Lindley at james.lindley@aemo.com.au or Simon Taylor at businessdevelopment@powerlink.com.au
Mya San
AEMO Operations
75226CONSTRAINTS06/04/2020 09:50:11 AM
Update to system strength requirements in North Queensland
AEMO ELECTRICITY MARKET NOTICE
Refer to market notice 74987
AEMO and Powerlink are continuing to investigate system strength requirements in North Queensland. A revision to the requirements will be implemented at 1300 hrs today.
The revised minimum generator combinations and limits are:
1 - 3 x Stanwell, 1 x Callide B, 1 x Callide C, 3 x Gladstone, 10 x Total Stanwell+Callide+Gladstone, 4 x Kareeya, 2 x Barron Gorge: 100% output
2 - 3 x Stanwell, 1 x Callide B, 1 x Callide C, 3 x Gladstone, 10 x Total Stanwell+Callide+Gladstone, 4 x Kareeya, 1 x Barron Gorge: 80% output
3 - 3 x Stanwell, 1 x Callide B, 1 x Callide C, 3 x Gladstone, 10 x Total Stanwell+Callide+Gladstone, 2 x Kareeya, 1 x Townsville GT: 80% output
4 - 3 x Stanwell, 1 x Callide B, 1 x Callide C, 3 x Gladstone, 10 x Total Stanwell+Callide+Gladstone, 2 x Kareeya, 1 x Barron Gorge: 70% output
5 - 3 x Stanwell, 1 x Callide B, 1 x Callide C, 3 x Gladstone, 10 x Total Stanwell+Callide+Gladstone, 4 x Kareeya: 70% output
The following new combination will also be implemented:
4H - 3 x Stanwell, 1 x Callide B, 1 x Callide C, 3 x Gladstone, 10 x Total Stanwell+Callide+Gladstone, 2 x Kareeya, 1 x Barron Gorge, 50% or less output at Mt Emerald: 100% output for Haughton solar farm. This new limit takes into account the current physical limitation on generation from Sun Metals Solar Farm.
If these combinations are not met all three generators have a limit of 0 MW and 0 inverters.
The constraint equations are: Q_NIL_STRGTH_MEWF, Q_NIL_STRGTH_HAUSF, Q_NIL_STRGTH_SMSF.
For further details please contact James Lindley at james.lindley@aemo.com.au or Simon Taylor at businessdevelopment@powerlink.com.au
Ben Blake
AEMO Operations
Refer to market notice 74987
AEMO and Powerlink are continuing to investigate system strength requirements in North Queensland. A revision to the requirements will be implemented at 1300 hrs today.
The revised minimum generator combinations and limits are:
1 - 3 x Stanwell, 1 x Callide B, 1 x Callide C, 3 x Gladstone, 10 x Total Stanwell+Callide+Gladstone, 4 x Kareeya, 2 x Barron Gorge: 100% output
2 - 3 x Stanwell, 1 x Callide B, 1 x Callide C, 3 x Gladstone, 10 x Total Stanwell+Callide+Gladstone, 4 x Kareeya, 1 x Barron Gorge: 80% output
3 - 3 x Stanwell, 1 x Callide B, 1 x Callide C, 3 x Gladstone, 10 x Total Stanwell+Callide+Gladstone, 2 x Kareeya, 1 x Townsville GT: 80% output
4 - 3 x Stanwell, 1 x Callide B, 1 x Callide C, 3 x Gladstone, 10 x Total Stanwell+Callide+Gladstone, 2 x Kareeya, 1 x Barron Gorge: 70% output
5 - 3 x Stanwell, 1 x Callide B, 1 x Callide C, 3 x Gladstone, 10 x Total Stanwell+Callide+Gladstone, 4 x Kareeya: 70% output
The following new combination will also be implemented:
4H - 3 x Stanwell, 1 x Callide B, 1 x Callide C, 3 x Gladstone, 10 x Total Stanwell+Callide+Gladstone, 2 x Kareeya, 1 x Barron Gorge, 50% or less output at Mt Emerald: 100% output for Haughton solar farm. This new limit takes into account the current physical limitation on generation from Sun Metals Solar Farm.
If these combinations are not met all three generators have a limit of 0 MW and 0 inverters.
The constraint equations are: Q_NIL_STRGTH_MEWF, Q_NIL_STRGTH_HAUSF, Q_NIL_STRGTH_SMSF.
For further details please contact James Lindley at james.lindley@aemo.com.au or Simon Taylor at businessdevelopment@powerlink.com.au
Ben Blake
AEMO Operations
74987CONSTRAINTS19/03/2020 01:03:38 PM
Revised System Strength limits in North Queensland
AEMO ELECTRICITY MARKET NOTICE
AEMO and Powerlink are continuing to investigate system strength requirements in North Queensland.
Through this work, AEMO and Powerlink have identified the need, depending on power system conditions, to constrain the output of three generators in North Queensland to maintain power system security.
The constraint equation is expected to limit generation from the three generators depending on power system conditions. The generators are Mt Emerald Wind Farm, Haughton Solar Farm and Sun Metals Solar Farm.
The constraint equations are: Q_NIL_STRGTH_MEWF, Q_NIL_STRGTH_HAUSF, Q_NIL_STRGTH_SMSF. These will be implemented at 1500hrs EST today.
The minimum generator combinations and limits are:
1 - 3 x Stanwell, 1 x Callide B, 1 x Callide C, 4 x Gladstone, 10 x Total Stanwell+Callide+Gladstone, 4 x Kareeya, 2 x Barron Gorge: 100% output
2 - 3 x Stanwell, 1 x Callide B, 1 x Callide C, 4 x Gladstone, 10 x Total Stanwell+Callide+Gladstone, 4 x Kareeya, 1 x Barron Gorge: 80% output
3 - 3 x Stanwell, 1 x Callide B, 1 x Callide C, 4 x Gladstone, 10 x Total Stanwell+Callide+Gladstone, 2 x Kareeya, 1 x Townsville GT: 80% output
4 - 3 x Stanwell, 1 x Callide B, 1 x Callide C, 4 x Gladstone, 10 x Total Stanwell+Callide+Gladstone, 2 x Kareeya, 1 x Barron Gorge: 70% output
5 - 3 x Stanwell, 1 x Callide B, 1 x Callide C, 4 x Gladstone, 10 x Total Stanwell+Callide+Gladstone, 4 x Kareeya: 70% output
If these combinations are not met all three generators have a limit of 0 MW and 0 inverters.
For further details please contact James Lindley at james.lindley@aemo.com.au or Simon Taylor at businessdevelopment@powerlink.com.au
Ben Blake
AEMO Operations
AEMO and Powerlink are continuing to investigate system strength requirements in North Queensland.
Through this work, AEMO and Powerlink have identified the need, depending on power system conditions, to constrain the output of three generators in North Queensland to maintain power system security.
The constraint equation is expected to limit generation from the three generators depending on power system conditions. The generators are Mt Emerald Wind Farm, Haughton Solar Farm and Sun Metals Solar Farm.
The constraint equations are: Q_NIL_STRGTH_MEWF, Q_NIL_STRGTH_HAUSF, Q_NIL_STRGTH_SMSF. These will be implemented at 1500hrs EST today.
The minimum generator combinations and limits are:
1 - 3 x Stanwell, 1 x Callide B, 1 x Callide C, 4 x Gladstone, 10 x Total Stanwell+Callide+Gladstone, 4 x Kareeya, 2 x Barron Gorge: 100% output
2 - 3 x Stanwell, 1 x Callide B, 1 x Callide C, 4 x Gladstone, 10 x Total Stanwell+Callide+Gladstone, 4 x Kareeya, 1 x Barron Gorge: 80% output
3 - 3 x Stanwell, 1 x Callide B, 1 x Callide C, 4 x Gladstone, 10 x Total Stanwell+Callide+Gladstone, 2 x Kareeya, 1 x Townsville GT: 80% output
4 - 3 x Stanwell, 1 x Callide B, 1 x Callide C, 4 x Gladstone, 10 x Total Stanwell+Callide+Gladstone, 2 x Kareeya, 1 x Barron Gorge: 70% output
5 - 3 x Stanwell, 1 x Callide B, 1 x Callide C, 4 x Gladstone, 10 x Total Stanwell+Callide+Gladstone, 4 x Kareeya: 70% output
If these combinations are not met all three generators have a limit of 0 MW and 0 inverters.
For further details please contact James Lindley at james.lindley@aemo.com.au or Simon Taylor at businessdevelopment@powerlink.com.au
Ben Blake
AEMO Operations
73600PRICE ADJUSTMENT03/02/2020 03:33:15 PM
[EventId:202002011015_confirmed] Prices for interval 01-Feb-2020 10:15 are now confirmed
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 1532 hrs on 3 February 2020
PRICES ARE NOW CONFIRMED for dispatch interval 01-Feb-2020 10:15.
In accordance with Market Notice 73274 AEMO has reviewed this dispatch interval and determined that:
- Over-Constrained Dispatch has been resolved for this interval
Changed Prices ($/MWh)
TYPE
Region Original Adjusted
Price Price
RAISE6SEC
SA1 $300.00 $119.60
This is an AEMO autogenerated Market Notice.
Issued by Australian Energy Market Operator Ltd at 1532 hrs on 3 February 2020
PRICES ARE NOW CONFIRMED for dispatch interval 01-Feb-2020 10:15.
In accordance with Market Notice 73274 AEMO has reviewed this dispatch interval and determined that:
- Over-Constrained Dispatch has been resolved for this interval
Changed Prices ($/MWh)
TYPE
Region Original Adjusted
Price Price
RAISE6SEC
SA1 $300.00 $119.60
This is an AEMO autogenerated Market Notice.
73599PRICE ADJUSTMENT03/02/2020 03:32:42 PM
[EventId:202002011020_confirmed] Prices for interval 01-Feb-2020 10:20 are now confirmed
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 1531 hrs on 3 February 2020
PRICES ARE NOW CONFIRMED for dispatch interval 01-Feb-2020 10:20.
In accordance with Market Notice 73275 AEMO has reviewed this dispatch interval and determined that:
- Over-Constrained Dispatch has been resolved for this interval
Changed Prices ($/MWh)
TYPE
Region Original Adjusted
Price Price
RAISE6SEC
SA1 $300.00 $178.87
This is an AEMO autogenerated Market Notice.
Issued by Australian Energy Market Operator Ltd at 1531 hrs on 3 February 2020
PRICES ARE NOW CONFIRMED for dispatch interval 01-Feb-2020 10:20.
In accordance with Market Notice 73275 AEMO has reviewed this dispatch interval and determined that:
- Over-Constrained Dispatch has been resolved for this interval
Changed Prices ($/MWh)
TYPE
Region Original Adjusted
Price Price
RAISE6SEC
SA1 $300.00 $178.87
This is an AEMO autogenerated Market Notice.
73598PRICE ADJUSTMENT03/02/2020 03:32:01 PM
[EventId:202002011025_confirmed] Prices for interval 01-Feb-2020 10:25 are now confirmed
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 1531 hrs on 3 February 2020
PRICES ARE NOW CONFIRMED for dispatch interval 01-Feb-2020 10:25.
In accordance with Market Notice 73276 AEMO has reviewed this dispatch interval and determined that:
- Over-Constrained Dispatch has been resolved for this interval
Changed Prices ($/MWh)
TYPE
Region Original Adjusted
Price Price
RAISE6SEC
SA1 $300.00 $94.77
This is an AEMO autogenerated Market Notice.
Issued by Australian Energy Market Operator Ltd at 1531 hrs on 3 February 2020
PRICES ARE NOW CONFIRMED for dispatch interval 01-Feb-2020 10:25.
In accordance with Market Notice 73276 AEMO has reviewed this dispatch interval and determined that:
- Over-Constrained Dispatch has been resolved for this interval
Changed Prices ($/MWh)
TYPE
Region Original Adjusted
Price Price
RAISE6SEC
SA1 $300.00 $94.77
This is an AEMO autogenerated Market Notice.
73597PRICE ADJUSTMENT03/02/2020 03:31:31 PM
[EventId:202002011030_confirmed] Prices for interval 01-Feb-2020 10:30 are now confirmed
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 1531 hrs on 3 February 2020
PRICES ARE NOW CONFIRMED for dispatch interval 01-Feb-2020 10:30.
In accordance with Market Notice 73277 AEMO has reviewed this dispatch interval and determined that:
- Over-Constrained Dispatch has been resolved for this interval
Changed Prices ($/MWh)
TYPE
Region Original Adjusted
Price Price
RAISE6SEC
SA1 $300.00 $195.99
This is an AEMO autogenerated Market Notice.
Issued by Australian Energy Market Operator Ltd at 1531 hrs on 3 February 2020
PRICES ARE NOW CONFIRMED for dispatch interval 01-Feb-2020 10:30.
In accordance with Market Notice 73277 AEMO has reviewed this dispatch interval and determined that:
- Over-Constrained Dispatch has been resolved for this interval
Changed Prices ($/MWh)
TYPE
Region Original Adjusted
Price Price
RAISE6SEC
SA1 $300.00 $195.99
This is an AEMO autogenerated Market Notice.