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A static var compensator (SVC) was developed using a light-triggered thyristor with an overvoltage self protection function. In order to reduce the installation space for the equipment, we adopted a multiple valve unit (MVU) structure. This paper introduces the thyristor valve developed for a large-capacity SVC and some results of factory tests and experiences from operation in the field. The advantages of the proposed SVC are described in comparison with the conventional one.
Date of Conference: May 30 2011-June 3 2011