Fig.1 External view of the +/-80MVA SVG

External view of the +/-80MVA SVG

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Fig.1 shows an external view of the +/-80MVA SVG. An upper right picture is GTO-converter. Each inverter consists of a single-phase bridge. Each arm consists of three serial GTO rated at 4.5kV 3kA so that it can be operated at high voltage. An upper left picture is control panels. The controller adopts direct digital control (DDC) which uses 16-bit microprocessors. In addition, high-speed processing units such as a reactive power controller use a 16-bit digital signal processor (DSP) to improve control speed. The converter and control panels are placed indoor, and the transformer and cooling system are placed outdoor.

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