Technology of dc transmit electricity is to solve the important step of power transmission of high pressure, high capacity, Sunday run and asynchronous couplet net, of natural resources of the power inside the ceaseless development as our country electrified wire netting and countrywide limits optimize configuration, and on the west report east the construction that sends major project, technology of dc transmit electricity already showed wide applied perspective. The key of near future industrialization is: System of 500kV dc transmit electricity reachs the design technology of equipment, dc control protection, change stream a powerful person, change shed transformer, a powerful person to accuse to reach a station to control device, make equipment of dc filter wave, make dc switch equipment of office of field equipment, a powerful person, far move communication equipment to wait for crucial equipment; Network of advanced transformer substation, distribution is integrated automation unit, hydroelectric station is automatic supervisory and control arrangement.

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