Dc transmit electricity is a when develop quickly in recent years new technology in power system. Main application is net of couplet of system of transmit electricity of high capacity of Yu Yuan distance, power, remote the respect such as the light-duty dc transmit electricity of network of submarine cable or power transmission of cable of big city underground, distribution. Dc transmit electricity and communication transmit electricity cooperate each other, make system of contemporary power transmission. The constant growth as demand of economy of power system technology and rise, dc transmit electricity is gotten ceaseless development by wide attention. With the technology related dc transmit electricity, if control of electric power electron, microelectronics, computer, insulation is new material, fiber-optic, superconduction, emulate and power system moves, control and the development that plan to wait are open up of dc transmit electricity wide applied perspective. 　
　
Advisory company of engineering of transmit electricity of dc of national power company is the professional orgnaization that Chinese head home is engaged in dc project technology seeking advice, already finished 3 gorge of “ at present - the advisory research of ” of project of transmit electricity of Changzhou ±500kV dc and result are made normatively, begin 3 gorge right bank sheds a project the 2nd times continuously start those who reach project of domestic and international other dc to consult the job. Origin: HTtp://www.tede.cn