FIELD: electricity.
SUBSTANCE: system (1) of DC power supply comprises main DC bus (3), unit (P1, P2, P3, P4) for power generation, configured to supply power to main DC bus (3), switch-disconnector (7) located between main bus (3) and unit (P1, P2, P3, P4) for generation of power for insulation of main DC bus (3) in case of failure of the main DC bus, excitation unit (D1, D2), configured to receive power from the main DC bus, while excitation unit (D1, D2) includes a bus system (DB) of the excitation unit, converter units (I1, I2, I3) connected to the bus system (DB) of the excitation unit, and fuses (F) located between the system (DB) of excitation unit bus and converter units (I1, I2, I3) for protection of converter units (I1, I2, I3) in case of the excitation unit failure.
EFFECT: reliable protection system with reduced weight and dimensions.
14 cl, 4 dwg
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