Market Notices

53439INTER-REGIONAL TRANSFER20/05/2016 05:33:29 AM

Cancellation -Inter-regional transfer limit variation - Tarong to South Pine (832) 275kV Line (Qld) - Voltage Control

AEMO ELECTRICITY MARKET NOTICE

Cancellation -Inter-regional transfer limit variation - Tarong to South Pine (832) 275kV Line (Qld) - Voltage Control - 20 May 2016

Refer Market Notice 53435

The Tarong to South Pine (832) 275kV Line has been returned to service.

The following constraint set was revoked at 0535 hrs..

Q-TRSP_832

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

N-Q-MNSP1


Manager NEM Real Time Operations
53438INTER-REGIONAL TRANSFER20/05/2016 05:03:03 AM

Cancellation - Inter-regional Inter-regional transfer limit variation - Greenbank to Middle Ridge (8849) 275kV Line (Qld) - Voltage Control

AEMO ELECTRICITY MARKET NOTICE

Cancellation - Inter-regional transfer limit variation - Greenbank to Middle Ridge (8849) 275kV Line (Qld) - Voltage Control - Monday, 16 May 2016

Refer to Market Notice 53437

The Greenbank to Middle Ridge (8849) 275kV Line was returned to service.

The following constraint set was revoked at 0505 hrs.

Q-MRGB_8848_8849

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

NSW-QLD1
N-Q-MNSP1


Manager NEM Real Time Operations
53437INTER-REGIONAL TRANSFER20/05/2016 02:25:37 AM

Inter-regional Inter-regional transfer limit variation - Greenbank to Middle Ridge (8849) 275kV Line (Qld) - Voltage Control

AEMO ELECTRICITY MARKET NOTICE

Inter-regional transfer limit variation - Greenbank to Middle Ridge (8849) 275kV Line (Qld) - Voltage Control - 20 May 2016

The Greenbank to Middle Ridge (8849) 275kV Line has been de-energised to manage voltages in the Qld region.

The following constraint set was invoked at 0225 hrs until further notice.

Q-MRGB_8848_8849

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

NSW-QLD1
N-Q-MNSP1



Manager NEM Real Time Operations
53436INTER-REGIONAL TRANSFER20/05/2016 02:15:07 AM

Inter-regional transfer limit variation for Transient Stability Limit - Vic Region - 20 May 2016

AEMO ELECTRICITY MARKET NOTICE

Inter-regional transfer limit variation for Transient Stability Limit - Vic Region - 20 May 2016

The AEMO Dynamic Stability Analysis application is indicating violations for a fault on a Hazelwood - South Morang 500 kV transmission line in the Victoria region.

The following constraints have been invoked to apply offset reductions to the Victoria transient stability export limit.

Constraint V-DSA_STAB-050 invoked from 0215 hrs until further notice

Constraints have the following interconnectors on the LHS
NSW1-QLD1
T-V-MNSP1
V-S-MNSP1
V-SA
VIC1-NSW1

Manager NEM Real Time Operations
53435INTER-REGIONAL TRANSFER20/05/2016 01:15:07 AM

Inter-regional transfer limit variation - Tarong to South Pine (832) 275kV Line (Qld) - Voltage Control - 20 May 2016

AEMO ELECTRICITY MARKET NOTICE

Inter-regional transfer limit variation - Tarong to South Pine (832) 275kV Line (Qld) - Voltage Control - 20 May 2016

The Tarong to South Pine (832) 275kV Line has been de-energised to manage voltages in the Qld region.

The following constraint set was invoked at 0115 hrs until further notice.

Q-TRSP_832

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

N-Q-MNSP1


Manager NEM Real Time Operations
53434NON-CONFORMANCE20/05/2016 12:25:11 AM

NON-CONFORMANCE Region NSW1 Friday, 20 May 2016

AEMO ELECTRICITY MARKET NOTICE

NON-CONFORMANCE NSW1 Region Friday, 20 May 2016

AEMO declared a schedule generating unit non-conforming

Unit: MP1
Duration: 20/05/2016 00:20 to 20/05/2016 00:25
Amount: -59 MW
Constraint: NC-N_MP1

Auto-generated on behalf of Manager NEM Real Time Operations
53433RECLASSIFY CONTINGENCY19/05/2016 11:10:02 PM

Cancellation of the Reclassification of a Non-Credible Contingency Event: Farrell - John Butters 220 kV Line and the Farrell - Rosebery Tee Queenstown - Newton 110 kV Line in Tasmania due to Lightning.

AEMO ELECTRICITY MARKET NOTICE

Cancellation of the Reclassification of a Non-Credible Contingency Event: Farrell - John Butters 220 kV Line and the Farrell - Rosebery Tee Queenstown - Newton 110 kV Line in Tasmania due to Lightning.

Refer AEMO Electricity Market Notice 53432

There is no longer any lightning activity in the vicinity of the Farrell - John Butters 220 kV Line and the Farrell - Rosebery Tee Queenstown - Newton 110 kV Line.

AEMO has cancelled the reclassification of the simultaneous trip of those circuits as a credible contingency event at 2310 hrs.


Manager NEM Real Time Operations
53432RECLASSIFY CONTINGENCY19/05/2016 10:10:05 PM

Reclassification of a Non-Credible Contingency Event: Farrell - John Butters 220 kV Line and the Farrell - Rosebery Tee Queenstown - Newton 110 kV Line in Tasmania due to Lightning.

AEMO ELECTRICITY MARKET NOTICE

Reclassification of a Non-Credible Contingency Event: Farrell - John Butters 220 kV Line and the Farrell - Rosebery Tee Queenstown - Newton 110 kV Line in Tasmania due to Lightning.

Lightning is occurring near the Farrell - John Butters 220 kV Line and the Farrell - Rosebery Tee Queenstown - Newton 110 kV Line.

AEMO considers the simultaneous trip of those circuits to now be more likely.

Therefore AEMO has reclassified this as a credible contingency event from 2210 hrs 19/05/16 until further notice.

Manager NEM Real Time Operations
53431NEM SYSTEMS19/05/2016 06:00:48 PM

FCAS Regulation unavailable for Dispatch - 19 May 2016

AEMO ELECTRICITY MARKET NOTICE.

FCAS Regulation unavailable for Dispatch - 19 May 2016
For the two Dispatch Intervals from1725 and 1730 there was no Raise or Lower regulation FCAS dispatched.
The cause is being investigated by AEMO.

Manager NEM Real Time Operations
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