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Murraylink consists of two {{convert|180|km|adj=on}} long bipolar HVDC cables.<ref>{{cite web |url=http://new.abb.com/systems/hvdc/references/murraylink |title=Murraylink - The world's longest underground power transmission system. |publisher=ABB group |accessdate=18 August 2019}}</ref> The circuit has an operating voltage of 150&nbsp;[[kilovolt|kV]] and a transmission capacity of 220&nbsp;[[megawatt]]s. The link operates an "HVDC Light" [[HVDC converter|voltage-source converter]] system, utilising [[insulated-gate bipolar transistor]]s (IGBT), to convert electricity between alternating current and direct current.
Murraylink consists of two {{convert|180|km|adj=on}} long bipolar HVDC cables.<ref>{{cite web |url=http://new.abb.com/systems/hvdc/references/murraylink |title=Murraylink - The world's longest underground power transmission system. |publisher=ABB group |accessdate=18 August 2019}}</ref> The circuit has an operating voltage of 150&nbsp;[[kilovolt|kV]] and a transmission capacity of 220&nbsp;[[megawatt]]s. The link operates an "HVDC Light" [[HVDC converter|voltage-source converter]] system, utilising [[insulated-gate bipolar transistor]]s (IGBT), to convert electricity between alternating current and direct current.


While Murraylink is rated at 220MW, it is unable to operate at capacity during periods of high demand due to limitations in the transmission infrastructure at either end.<ref>{{cite web |url=https://www.aer.gov.au/system/files/Murraylink%20-%20Proposed%20contingent%20project%20-%20May%202012.pdf |title=Contingent Project Proposal |publisher=Murraylink Transmission Company Pty Ltd |date=May 2012 |page=2 |accessdate=1 August 2017}}</ref> The limitations relate to thermal overload of transformers or transmission lines supplying the [[Riverland]] (for South Australia to Victoria transmission) and western Victoria (for Victoria to South Australia transmission).<ref>{{cite web |url=http://www.aemo.com.au/-/media/Files/PDF/Interconnector-Capabilities-v2.pdf |title=Interconnector Capabilities for the National Electricity Market |publisher=[[Australian Energy Market Operator]] |date=September 2015 |accessdate=1 August 2017 |pages=10–11}}</ref>
While Murraylink is rated at 220MW, it is unable to operate at capacity during periods of high demand due to limitations in the transmission infrastructure at either end.<ref>{{cite web |url=https://www.aer.gov.au/system/files/Murraylink%20-%20Proposed%20contingent%20project%20-%20May%202012.pdf |title=Contingent Project Proposal |publisher=Murraylink Transmission Company Pty Ltd |date=May 2012 |page=2 |accessdate=1 August 2017}}</ref> The limitations relate to thermal overload of transformers or transmission lines supplying the [[Riverland]] (for South Australia to Victoria transmission) and western Victoria (for Victoria to South Australia transmission).<ref>{{cite web |url=https://aemo.com.au/-/media/Files/Electricity/NEM/Security_and_Reliability/Congestion-Information/2017/Interconnector-Capabilities.pdf |title=Interconnector Capabilities for the National Electricity Market |publisher=[[Australian Energy Market Operator]] |date=November 2017 |accessdate=24 April 2024 |pages=7-8}}</ref>


== Sites ==
== Sites ==

Revision as of 15:12, 24 April 2024

Murraylink
Location
CountryAustralia
Coordinates34°17′37″S 142°14′20″E / 34.29361°S 142.23889°E / -34.29361; 142.23889 (Red Cliffs Static Inverter Plant)
34°14′17″S 140°36′01″E / 34.23806°S 140.60028°E / -34.23806; 140.60028 (Berri Static Inverter Plant)
FromBerri, South Australia
ToRed Cliffs, Victoria
Ownership information
OwnerEnergy Infrastructure Investment
OperatorAPA Group
Construction information
Manufacturer of conductor/cableABB
Commissioned2002
Technical information
Typeunderground cable
Type of currentLight HVDC
Total length180 km (110 mi)
Power rating220 MW
AC voltage132 kV (Berri)
220 kV (Red Cliffs)
DC voltage±150 kV
No. of poles2

Murraylink is an Australian high voltage direct current electricity transmission link between Berri in South Australia and Red Cliffs in Victoria, connecting the two state electricity grids. Murraylink was commissioned in 2002 and is believed to be the world's longest underground transmission system and cost more than A$177 million. It was built by TransEnergie Australia, a subsidiary of Hydro-Québec. It was sold to the Australian Pipeline Trust (APA Group) in March 2006 for A$153 million. In December 2008 ownership of Murraylink (as well as Directlink) was transferred to the newly formed Energy Infrastructure Investments Group, while APA continued as the operator.[1] The ownership of EII is APA with 19.9%, with the balance with Japan-based Marubeni Corporation with 49.9% and Osaka Gas with 30.2%.[2]

Capacity

Murraylink consists of two 180-kilometre (110 mi) long bipolar HVDC cables.[3] The circuit has an operating voltage of 150 kV and a transmission capacity of 220 megawatts. The link operates an "HVDC Light" voltage-source converter system, utilising insulated-gate bipolar transistors (IGBT), to convert electricity between alternating current and direct current.

While Murraylink is rated at 220MW, it is unable to operate at capacity during periods of high demand due to limitations in the transmission infrastructure at either end.[4] The limitations relate to thermal overload of transformers or transmission lines supplying the Riverland (for South Australia to Victoria transmission) and western Victoria (for Victoria to South Australia transmission).[5]

Sites

Site Coordinates
Red Cliffs Static Inverter Plant 34°17′37″S 142°14′20″E / 34.29361°S 142.23889°E / -34.29361; 142.23889 (Red Cliffs Static Inverter Plant)
Berri Static Inverter Plant 34°14′17″S 140°36′01″E / 34.23806°S 140.60028°E / -34.23806; 140.60028 (Berri Static Inverter Plant)

References

  1. ^ Electricity Transmission Network Service Providers - Directlink and Murraylink amended Cost Allocation Methodologies - March 2010
  2. ^ electricity interconnectors
  3. ^ "Murraylink - The world's longest underground power transmission system". ABB group. Retrieved 18 August 2019.
  4. ^ "Contingent Project Proposal" (PDF). Murraylink Transmission Company Pty Ltd. May 2012. p. 2. Retrieved 1 August 2017.
  5. ^ "Interconnector Capabilities for the National Electricity Market" (PDF). Australian Energy Market Operator. November 2017. pp. 7–8. Retrieved 24 April 2024.
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