SUBSTATION CONNECTIONS

Superconducting cables are foreseen to have four main advantages:

• Energy savings,

• Reduced installation cost,

• Reduced system cost,

• Increased transmission capacity.

One of the proposals to reduce system cost is a re-design of new or expanded substations. By using HTS cables with a high amperage rating, it is proposed that one or several transformation steps can be eliminated. The new substation is designed without a high-voltage section, and the power is fed into the station at distribution voltage instead of at transmission voltage, but at a correspondingly higher rated current. It is anticipated that this will lead to a reduction in the cost of buildings, switchgear, and transformers, reduced environmental- and fire hazards due to the elimination of transformer oil, and more compact switchyards.

However, detailed design- and cost studies are currently not publicly available to demonstrate the economic feasibility and positive effects.

 

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	why superconducting cables?
	substation connections
	retrofit of existing cables
	high load connections
	DC cables
	long term visions