Low-voltage power supply and distribution method under ship critical power station capacity

Abstract

The invention discloses a low-voltage power supply and distribution method under a ship critical power station capacity. Four generators are arranged in a power station, a first busbar, a second busbar and a third busbar are arranged in the power station, the first busbar and the second busbar are respectively connected with one generator, and the third busbar is connected with two generators; the first busbar and the second busbar are connected through a first interconnection switch, and the second busbar and the third busbar are connected through a second interconnection switch; the power station supplies power to a plurality of conventional loads and specific loads; the conventional loads are connected to the first busbar or the second busbar; the specific load is connected to the third busbar; and the first interconnection switch is switched on, and the second interconnection switch is switched off. The maximum short-circuit capacity of the system can be effectively reduced, regional power supply is carried out on the load, and the power supply continuity of the power system is ensured.

Description

technical field [0001] The invention relates to the technical field of ships, in particular to a low-voltage power supply and distribution method under the ship's critical power station capacity. Background technique [0002] Taking a refrigerated container ship as an example, when its power station capacity is between 8MW and 10MW, it is considered to be the critical value between the large-capacity power station and the small-capacity power station. In this case, due to concerns about the maximum short-circuit current at the busbar of the power system, the power supply method of the medium-voltage power system is often used to reduce the short-circuit current. This method has high investment costs, high requirements for ship space layout, professional and technical personnel are required during operation, high maintenance cost, and complicated maintenance methods. A more economical, reliable, and low-maintenance power station design alternative method is needed to solve t...

AI Technical Summary

Problems solved by technology

[0007] 1. The economy is not high, which increases the cost of shipbuilding;

[0008] 2. The increase in equipment increases the requirements for installation space on board;

[0009] 3. Increase energy consumption and light ship weight;

[0010] 4. The maintenance method of medium-voltage electrical equipment is complicated, and the operation of medium-voltage power system is relatively complicated;

[0011] 5. Special technical personnel are required for operation and maintenance

[0012] 6. After the failure of the medium-voltage equipment, there will be great potential safety hazards

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