ELECTRODE CONNECTION STRUCTURE FOR PARALLEL COOLING TYPE HVDC VALVE

摘要

The present invention relates to an electrode connection structure for a parallel cooling type HVDC valve. More particularly, the present invention relates to an electrode connection structure for a parallel cooling type HVDC valve to prevent the corrosion and cooling of a resistance element and a semiconductor in a thyristor valve which is essentially necessary for a high voltage direct current transmission system. An electrode connection structure for a parallel cooling type HVDC valve according to an aspect of the prevent invention includes a thyristor valve module including thyristor valve sections formed by combining thyristors and a heat radiation plate; a main cooling water inlet pipe and a main cooling wafer outlet pipe which are prepared on one side of the thyristor valve module; a cooling water inlet pipe which is connected in parallel from the main cooling water inlet pipe to one side of the thyristor; and a cooling water outlet pipe which is connected in parallel from the other side of the thyristor to the main cooling outlet pipe. One end of the electrode of the main cooling water inlet pipe is electrically connected to the heat radiation plate of one end of the thyristor valve section and the electrode of one end of the main cooling water outlet pipe, thereby forming equipotentiality. The electrode of the other end of the main cooling water inlet pipe is electrically connected to the heat radiation plate of the other end of the thyristor valve section and the electrode of the other end of the main cooling water outlet pipe, thereby forming equipotentiality.