Subsea electric power distribution installation

A subsea electric power distribution installation comprising:

• one or more MV switching apparatuses electrically connected with an electric power source and one or more electric loads, said switching apparatuses being adapted to switch a MV electric power supply to said electric loads;
• electronic equipment operatively associated with said switching apparatuses for managing the operation of said switching apparatuses, said electronic equipment being configured to receive a LV electric power supply;
• at least a centralized energy storage unit including one or more storing devices for storing electric energy, wherein said centralized energy storage unit is adapted to receive electric power from said electric power source to charge said storing devices, wherein said centralized energy storage unit is adapted to provide an electric power supply (V2, V3) to said electronic equipment by consuming electric power provided by said storing devices,
• wherein said centralized energy storage unit comprises:
• a first electronic module configured to receive a first feeding voltage (V1) from said electric power source and provide an input voltage (VIN);
• an energy storage module comprising said storing devices;
• and
• a second electronic module configured to receive said input voltage (VIN) from said first electronic module and provide a charging voltage (VC) to said energy storage module to charge said storing devices, said second electronic module being configured to provide a second feeding voltage (VH2) to said electronic equipment consuming electric power provided by said storing devices,
• wherein said second electronic module is electrically connected with first electronic equipment of said subsea electric power distribution installation to feed said first electronic equipment with said second feeding voltage (V2), and
• wherein said centralized energy storage unit comprises a third electronic module comprising:
• a first electronic stage configured to receive said second feeding voltage (V2) from said second electronic module and provide a third feeding voltage (V3);
• a second electronic stage electrically connected with at least an auxiliary power supply unit and second equipment of said subsea electric power distribution installation, wherein said second electronic stage is configured to reversibly switch between a first circuit configuration (A), at which second electronic stage receives said third feeding voltage from said auxiliary power supply unit and provides said third feeding voltage to said second electronic equipment, when said auxiliary power supply unit is active, and a second circuit configuration (B), at which said second electronic stage receives said third feeding voltage from said first electronic stage and provides said third feeding voltage to said second electronic equipment, when said auxiliary power supply unit is inactive.

A subsea electric power distribution installation comprising:

• one or more MV switching apparatuses electrically connected with an electric power source and one or more electric loads, said switching apparatuses being adapted to switch a MV electric power supply to said electric loads;
• electronic equipment operatively associated with said switching apparatuses for managing the operation of said switching apparatuses, said electronic equipment being configured to receive a LV electric power supply;
• at least a centralized energy storage unit including one or more storing devices for storing electric energy, wherein said centralized energy storage unit is adapted to receive electric power from said electric power source to charge said storing devices, wherein said centralized energy storage unit is adapted to provide an electric power supply (V2, V3) to said electronic equipment by consuming electric power provided by said storing devices,
• wherein said centralized energy storage unit comprises:
• a first electronic module configured to receive a first feeding voltage (V1) from said electric power source and provide an input voltage (VIN);
• an energy storage module comprising said storing devices;
• and
• a second electronic module configured to receive said input voltage (VIN) from said first electronic module and provide a charging voltage (VC) to said energy storage module to charge said storing devices, said second electronic module being configured to provide a second feeding voltage (VH2) to said electronic equipment consuming electric power provided by said storing devices,
• wherein said second electronic module is electrically connected with first electronic equipment of said subsea electric power distribution installation to feed said first electronic equipment with said second feeding voltage (V2),
• wherein said first electronic equipment comprises a plurality of power and control units operatively associated with said switching apparatuses, and
• wherein said centralized energy storage unit comprises a third electronic module comprising:
• a first electronic stage configured to receive said second feeding voltage (V2) from said second electronic module and provide a third feeding voltage (V3);
• a second electronic stage electrically connected with at least an auxiliary power supply unit and second equipment of said subsea electric power distribution installation, wherein said second electronic stage is configured to reversibly switch between a first circuit configuration (A), at which second electronic stage receives said third feeding voltage from said auxiliary power supply unit and provides said third feeding voltage to said second electronic equipment, when said auxiliary power supply unit is active, and a second circuit configuration (B), at which said second electronic stage receives said third feeding voltage from said first electronic stage and provides said third feeding voltage to said second electronic equipment, when said auxiliary power supply unit is inactive.