ABB replaces HVDC transmission link between Oklahoma, Texas

Swiss power technology group ABB successfully commissioned an HVDC link for American Electric Power (AEP), which replaces the 30- year-old Oklaunion HVDC back-to-back converter station in Texas. The converter station is an integral part of the Oklaunion HVDC transmission link – an asynchronous interconnection between the Texas (ERCOT) and Oklahoma (SPP) power grids.

The project scope included engineering, supply, installation and commissioning of an HVDC back-to-back transmission system capable of delivering 220 MW of power in either direction. The new system has black-start capability, which enables fast grid restoration in the event of a power outage, allowing power to be used from the other end of the link.

Other components supplied as part of the turnkey solution included converter valves, converter transformers, and ABB’s MACH advanced control and protection system, to help meet system performance requirements.

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The Clarion Energy Content Team is made up of editors from various publications, including POWERGRID International, Power Engineering, Renewable Energy World, Hydro Review, Smart Energy International, and Power Engineering International. Contact the content lead for this publication at Jennifer.Runyon@ClarionEvents.com.

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