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Commissioning Tests Of The Bonneville Power Administration 30 MJ Superconducting Magnetic Energy Storage Unit

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2 Author(s)
Boenig, H.J. ; Los Alamos National Laboratory ; Hauer, J.F.

A 30 MJ (8.4 kWh) Superconducting Magnetic Energy Storage (SMES) unit with a 10 MW converter has been installed and commissioned at the Bonneville Power Administration (BPA) substation in Tacoma, Washington. This is the first large-scale application in the US of superconductivity in an electric utility system. The unit, which is capable of absorbing and releasing up to 10 MJ of energy at a frequency of 0.35 Hz, was designed to damp the dominant power swing mode of the Pacific AC Intertie. This paper describes the electrical characteristics of the magnetic energy storage unit, its modes of operation, results of device tests, means for controlling real and reactive power, and some initial power system response tests. A short summary of the operating history of the unit over the first eleven months is also presented.

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Power Apparatus and Systems, IEEE Transactions on  (Volume:PAS-104 ,  Issue: 2 )