Design and installation of 500 V back-to-back shunt capacitor banks

The Bonneville Power Administration's first 500 kV back-to-back shunt capacitor installation is described. The primary purpose of the capacitor banks is to support AC system voltage for transient stability following an outage of the HVDC Intertie line between Oregon and southern California. Design studies and equipment requirements are detailed in addition to electromagnetic transients program (EMTP) studies and subsequent field test results. Current-limiting reactors are used to limit inrush and outrush currents during capacitor switching.<
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