They don’t happen all that often at all in Victoria (yet?!) so it’s worth a quick snapshot from NEMwatch at 08:40 this morning showing a couple Market Notices relating to directions of interest:
The AEMO noted MN119270 at 07:57 as follows:
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MARKET NOTICE
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From : AEMO
To : NEMITWEB1
Creation Date : 24/10/2024 07:57:56
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Notice ID : 119270
Notice Type ID : MARKET INTERVENTION
Notice Type Description : Reserve Contract / Direction / Instruction
Issue Date : 24/10/2024
External Reference : Direction – Snowy Hydro Limited – MURR2-2 MURRAY2
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Reason :
AEMO ELECTRICITY MARKET NOTICE
Direction – Snowy Hydro Limited – MURR2-2 MURRAY2
Refer to Market Notice 119269
In accordance with section 116 of the National Electricity Law, AEMO is issuing a direction to Snowy Hydro Limited. For the purposes of the National Electricity Rules this is a direction under clause 4.8.9(a1)(1).
Direction issued to: Snowy Hydro Limited – MURR2-2 MURRAY2 at 0755 hrs 24/10/2024
Type of resource: synchronous condenser
Required actions: Synchronise and operate as a synchronous condenser at 0800 hrs 24/10/2024
Services provided: System Strength
Circumstances necessitating the Direction:System Strength
Circumstances necessitating the Direction additional detail: intervention is required to maintain the power system in a secure operating state
Expected duration: 1300 hrs 24/10/2024.
Snowy Hydro Limited does not incur any civil monetary liability for a relevant action taken in accordance with this direction unless the action is taken in bad faith.
Manager NEM Real Time Operations
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END OF REPORT
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… and also MN119271 at 07:59 as follows:
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MARKET NOTICE
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From : AEMO
To : NEMITWEB1
Creation Date : 24/10/2024 07:59:16
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Notice ID : 119271
Notice Type ID : MARKET INTERVENTION
Notice Type Description : Reserve Contract / Direction / Instruction
Issue Date : 24/10/2024
External Reference : Direction – Snowy Hydro Limited – MURR2-3 MURRAY2
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Reason :
AEMO ELECTRICITY MARKET NOTICE
Direction – Snowy Hydro Limited – MURR2-3 MURRAY2
Refer to Market Notice 119269
In accordance with section 116 of the National Electricity Law, AEMO is issuing a direction to Snowy Hydro Limited. For the purposes of the National Electricity Rules this is a direction under clause 4.8.9(a1)(1).
Direction issued to: Snowy Hydro Limited – MURR2-3 MURRAY2 at 0755 hrs 24/10/2024
Type of resource: synchronous condenser
Required actions: Synchronise and operate as a synchronous condenser at 0800 hrs 24/10/2024
Services provided: System Strength
Circumstances necessitating the Direction:System Strength
Circumstances necessitating the Direction additional detail: intervention is required to maintain the power system in a secure operating state
Expected duration: 1300 hrs 24/10/2024.
Snowy Hydro Limited does not incur any civil monetary liability for a relevant action taken in accordance with this direction unless the action is taken in bad faith.
Manager NEM Real Time Operations
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END OF REPORT
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We can also see YWPS1 coming offline in the 5 minutes to 08:05 (NEM time) for a planned maintenance outage (alerted via ‘Notifications’ in ez2view) as one of the probable reasons for the Directions:
Any angular momentum would be greatly appreciated!