Abstract:

         This paper designs a longdistance highvoltage direct current (HVDC) transmission system for submarine observation network. This system changes AC into highvoltage DC, then transmits highvoltage DC to nodes through DC transmission lines, and reduces highvoltage DC to available power supply. The system solves the problem of longdistance and longterm power supply of submarine observation network.

Key words: highvoltage DC, transmission system, AC-DC converter, DC-DC converter