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

A technology for power station capacity, power supply and distribution, applied in the field of ships, can solve the problems of complex maintenance methods for medium voltage electrical equipment, complex operation of medium voltage power systems, increased energy consumption and empty ship weight, etc., to reduce the maximum short-circuit capacity, solve the The effect of medium voltage power supply and shipbuilding cost reduction

Pending Publication Date: 2021-07-23
SHANGHAI MERCHANT SHIP DESIGN & RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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

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Embodiment Construction

[0033] A preferred embodiment will be given below, and the present invention will be described more clearly and completely in conjunction with the accompanying drawings.

[0034] Such as figure 1 As shown, a low-voltage power supply and distribution method under the ship's critical power station capacity:

[0035] There are four generators in the power station, the rated power of the generators is greater than 2MW and less than 2.5MW, and the total capacity of the power station is greater than 8MW and less than 10MW. The generator is a diesel generator. The rated voltage of the generator is 440V, the rated frequency is 60HZ, and the rated power is 2450KW.

[0036] The four generators are respectively a first generator 11 , a second generator 12 , a third generator 13 and a fourth generator 14 .

[0037] The first busbar 21, the second busbar 22 and the third busbar 23 are arranged in the power station, one generator is connected to the first busbar 21 and the second busbar ...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02J3/38B63J2/12
CPCH02J3/0073H02J3/381B63J2/12
Inventor 刘崇王荣张睿于澎姚炯朱兵黄丞袁健
Owner SHANGHAI MERCHANT SHIP DESIGN & RES INST
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