Power distribution system with shore power connection function

Abstract

The utility model provides a power distribution system with a shore power connection function, which comprises a main power distribution board and an emergency power distribution board, the main power distribution board is provided with a main power distribution module, and the emergency power distribution board is provided with an emergency power distribution module and a shore power module with an automatic commutation function. The main power distribution module is respectively connected with the input end of the emergency power distribution module and the output end of the shore power module through a cable 2, the output end of the shore power module is also connected with the input end of the emergency power distribution module, and the input end of the shore power module is connected with a shore power supply through a cable 1; the beneficial effects of the utility model are that the shore power box installed between the emergency generators is changed into the shore power module which is installed in the emergency distribution board, so that the required installation space can be greatly reduced; and the outlet end, namely the output end, of the shore power module is connected between the first circuit breaker and the second circuit breaker of the interconnection switch of the main power distribution board, so that a shunting effect is achieved, and the capacity of the first circuit breaker and the capacity of the second circuit breaker are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of ship power distribution, in particular to a power distribution system with a shore power connection function. Background Art

[0002] Conventional seagoing vessels are all equipped with a low-voltage shore power box with a capacity of 400A to 1500A. The current solution is to install this shore power box in the emergency generator room, in the same room as the emergency switchboard. Sometimes, due to limited space in the emergency generator room, the shore power box needs to be installed outside the emergency generator room. At the same time, this shore power box is first connected to the main switchboard in the control room far away from the emergency generator room to supply power to the main switchboard, and then the main switchboard supplies power to the emergency switchboard.

[0003] Specific structure such as Figure 1 As shown: the shore power box is installed in the emergency generator room, and is connected to the fifth circuit breaker QF5 on the main distribution board through cable 3 to supply power to the main distribution board, and then the emergency distribution board is supplied with power through the connecting switches QF1 and QF2 on the main distribution board and the emergency distribution board. The existing technology has the following disadvantages: (1) The current shore power box has high space requirements for the emergency generator room, especially when the shore power capacity is large, the size of the shore power box will also be large; (2) There is a long cable between the emergency generator room and the control room, which is not economical; (3) The shore power current supplied from the main distribution board to the emergency distribution board does not have a shunt function, and the connecting switch capacity configured on the main distribution board and the emergency distribution board is large; (4) The power supply stability of the emergency distribution board is affected by the first circuit breaker QF1 and the second circuit breaker QF2 on the main distribution board and the emergency distribution board, and is unstable. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a power distribution system with shore power connection function, which is used to solve the problems in the prior art that the shore power box has high space requirements for the emergency generator room and the shore power current supplied from the main distribution board to the emergency distribution board does not have a diversion function.

[0005] To achieve the above-mentioned and other related purposes, the present invention provides the following technical solutions:

[0006] A power distribution system with shore power connection function, comprising a main distribution board and an emergency distribution board. The main distribution board is provided with a main distribution module, the emergency distribution board is provided with an emergency distribution module, and the emergency distribution board is also provided with a shore power module with automatic phase change function. The main distribution module is connected to the input end of the emergency distribution module and the output end of the shore power module via cable 2, respectively. The output end of the shore power module is also connected to the input end of the emergency distribution module. The input end of the shore power module is connected to the shore power supply via cable 1.

[0007] The shore power module comprises a fourth circuit breaker and a fifth circuit breaker connected and interlocked with each other, one end of the fourth circuit breaker and the fifth circuit breaker is connected with the shore power source through the cable 1, the other end of the fourth circuit breaker and the fifth circuit breaker is connected with the main power distribution module through the cable 2, and the other end of the fourth circuit breaker and the fifth circuit breaker is also connected with the input end of the emergency power distribution module.

[0008] The above technical scheme can greatly reduce the required installation space by changing the shore power box installed in the emergency generator room into the shore power module installed in the emergency power distribution board, and can reduce the cable configuration by moving the original fifth circuit breaker in the main power distribution board to the shore power module to increase the automatic commutation function.

[0009] In an embodiment of the utility model, the main power distribution board is installed in the centralized control room on the ship, the main power distribution module comprises a busbar A installed on the main power distribution board and a first circuit breaker connected with the busbar A, and the other end of the first circuit breaker away from the busbar A is connected with the input end of the emergency power distribution module and the output end of the shore power module through the cable 2 respectively.

[0010] In an embodiment of the utility model, the main power distribution module further comprises a sixth circuit breaker connected with the busbar A, a seventh circuit breaker and an eighth circuit breaker connected with the busbar A, the other end of the sixth circuit breaker away from the busbar A is connected with the main generator, and the other end of the seventh circuit breaker and the eighth circuit breaker away from the busbar A is connected with the ship load equipment.

[0011] In an embodiment of the utility model, the emergency power distribution board is installed in the emergency generator room on the ship, the emergency power distribution module comprises a busbar B installed on the emergency power distribution board and a second circuit breaker connected with the busbar B, the other end of the second circuit breaker away from the busbar B is connected with the main power distribution module through the cable 2, and the other end of the second circuit breaker away from the busbar B is also connected with the output end of the shore power module.

[0012] In an embodiment of the utility model, the emergency power distribution module further comprises a third circuit breaker connected with the busbar B and interlocked with the second circuit breaker, a ninth circuit breaker and a tenth circuit breaker connected with the busbar B, the other end of the third circuit breaker away from the busbar B is connected with the emergency generator, and the other end of the ninth circuit breaker and the tenth circuit breaker away from the busbar B is connected with the ship load equipment.

[0013] As described above, the power distribution system with shore power connection function has the following beneficial effects:

[0014] The utility model discloses a shore power module is installed in the emergency distribution board through the shore power box of installing in the emergency generator room is changed, can greatly reduce the installation space required, and the fifth circuit breaker of the original belonging to the main distribution board is moved to the shore power module and increases the automatic commutation function, thereby reducing the cable configuration, and the outlet end of shore power module that is output end is connected between the first circuit breaker and the second circuit breaker of the main emergency distribution board tie -in switch, thereby playing the role of shunt, and the capacity of the first circuit breaker and the second circuit breaker is reduced, and moreover, the power supply stability of emergency distribution board is also increased, and the power supply of shore power on emergency distribution board is not influenced due to the failure of the first circuit breaker, thereby being convenient for promotion and use. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The whole structure schematic diagram of showing as the existing power distribution system is shown in the figure;

[0016] Figure 2 The whole structure schematic diagram of showing as the power distribution system with shore power connection function disclosed in the embodiment of the utility model is shown in the figure. DETAILED DESCRIPTION

[0017] The following through specific concrete example explains the embodiment of the utility model, and the person skilled in the art can easily understand other advantages and effects of the utility model from the content disclosed in the specification. It should be noted that the following examples and the features in the examples can be combined with each other without conflict.

[0018] Please refer to Figure 2 The utility model provides a kind of power distribution system with shore power connection function, including the main distribution board of being installed in the ship centralized control room and the emergency distribution board of being installed in the ship emergency power room, main distribution board is equipped with main distribution module, emergency distribution board is equipped with emergency distribution module and shore power module with automatic commutation function, wherein, when using shore power module to power supply main distribution board and emergency distribution board, automatic commutation function controls the state of the following fourth circuit breaker QF4 or fifth circuit breaker QF5 in closed according to actual demand.

[0019] Please refer to Figure 2 Main distribution module includes busbar A, first circuit breaker, sixth circuit breaker, seventh circuit breaker and eighth circuit breaker installed on main distribution board, and the following selects first circuit breaker QF1, sixth circuit breaker QF6, seventh circuit breaker QF7 and eighth circuit breaker QF8 as example to explain;

[0020] One end of the first circuit breaker QF1 is connected with the busbar A, and the other end of the first circuit breaker QF1 is connected with the input end of the emergency power distribution module and the output end of the shore power module through the cable 2 respectively; one end of the sixth circuit breaker QF6 is connected with the busbar A, and the other end of the sixth circuit breaker QF6 is connected with the main generator; one end of the seventh circuit breaker QF7 and the eighth circuit breaker QF8 is connected with the busbar A, and the other end of the seventh circuit breaker QF7 and the eighth circuit breaker QF8 is connected with the ship load equipment.

[0021] Please refer to Figure 2 The emergency power distribution module comprises the busbar B, the second circuit breaker, the third circuit breaker, the ninth circuit breaker and the tenth circuit breaker which are installed on the emergency power distribution board, and the following takes the second circuit breaker QF2, the third circuit breaker QF3, the ninth circuit breaker QF9 and the tenth circuit breaker QF10 as examples to be described.

[0022] One end of the second circuit breaker QF2 is connected with the busbar B, and the other end of the second circuit breaker QF2 is connected with the main power distribution module through the cable 2, and the other end of the second circuit breaker QF2 is also connected with the output end of the shore power module; one end of the third circuit breaker QF3 is connected with the busbar B, and the other end of the third circuit breaker QF3 is connected with the emergency generator, and the third circuit breaker QF3 is also interlocked with the second circuit breaker QF2; one end of the ninth circuit breaker QF9 and the tenth circuit breaker QF10 is connected with the busbar B, and the other end of the ninth circuit breaker QF9 and the tenth circuit breaker QF10 is connected with the ship load equipment.

[0023] Please refer to Figure 2 The shore power module comprises the fourth circuit breaker and the fifth circuit breaker, and the following takes the fourth circuit breaker QF4 and the fifth circuit breaker QF5 as examples to be described; the fourth circuit breaker QF4 and the fifth circuit breaker QF5 are connected with each other and are interlocked, one end of the fourth circuit breaker QF4 and the fifth circuit breaker QF5 is connected with the shore power source through the cable 1, the other end of the fourth circuit breaker QF4 and the fifth circuit breaker QF5 is connected with the main power distribution module through the cable 2, and the other end of the fourth circuit breaker QF4 and the fifth circuit breaker QF5 is also connected with the input end of the emergency power distribution module.

[0024] Specifically, the utility model discloses Figure 1The shore power module is installed in the emergency distribution board, so that the required installation space is greatly reduced, the fifth circuit breaker QF5 originally belonging to the main distribution board is moved to the shore power module to increase the automatic commutation function, and one shore power cable 3 from the emergency generator room to the centralized control room is reduced; meanwhile, the outlet end of the shore power module, that is, the output end is connected between the first circuit breaker QF1 and the second circuit breaker QF2 of the main emergency distribution board, plays a role of shunt, reduces the capacity of the first circuit breaker QF1 and the second circuit breaker QF2, and increases the power supply stability of the emergency distribution board, and the power supply of the shore power on the emergency distribution board is not affected due to failure of the first circuit breaker QF1.

[0025] More specifically, in actual application, the main distribution board and the emergency distribution board are connected through the cable 2, that is, one connector of the cable 2 is connected with the main distribution board, one end of the first circuit breaker QF1 on the main distribution board is connected with the connector of the cable 2 connected with the main distribution board; the other connector of the cable 2 is connected with the emergency distribution board, and the shore power module and the emergency power distribution module are installed on the emergency distribution board, so one end of the fourth circuit breaker QF4 and the fifth circuit breaker QF5 on the shore power module is connected with the connector of the cable 2 connected with the emergency distribution board through the copper bar or wire in the emergency distribution board, and one end of the second circuit breaker QF2 in the emergency power distribution module is also connected with the connector of the cable 2 connected with the emergency distribution board through the copper bar or wire in the emergency distribution board, so it is known that the outlet end of the shore power module, that is, the output end is connected between the first circuit breaker QF1 and the second circuit breaker QF2 of the main emergency distribution board, thereby playing a role of shunt during power supply;

[0026] Also please refer to Figure 1 , when power supply is performed by using the power distribution connection mode of Figure 1 , if the input shore power source is 100A, the capacity of the fourth circuit breaker QF4 also needs to be 100A, and the capacity of the fifth circuit breaker QF25, the first circuit breaker QF1 and the second circuit breaker QF2 also needs to be 100A, but in Figure 2 , because the output end of the shore power source is located between the first circuit breaker QF1 and the second circuit breaker QF2, the capacity of the fourth circuit breaker QF4 and the fifth circuit breaker QF5 is the same as the ampere number of the shore power source, and the capacity of the first circuit breaker QF1 and the second circuit breaker QF2 is reduced, and can be 50A, so the capacity of the first circuit breaker QF1 and the second circuit breaker QF2 is reduced by such setting; and the shore power module and the emergency distribution board in the utility model can supply power to the emergency distribution board, and the power supply stability of the emergency distribution board is increased, and the power supply of the shore power on the emergency distribution board is not affected due to failure of the first circuit breaker QF1.

[0027] Further, the working principle of the power distribution system with the shore power connection function is as follows: when the ship is berthed, the shore power supply is connected to the shore power module in the emergency power distribution board through the cable 1, the shore power module is connected to the first circuit breaker QF1 through the cable 2 to supply power to the ship load on the main power distribution board, and at the same time, the shore power module is connected to the second circuit breaker QF2 through the copper bar or wire in the emergency power distribution board to supply power to the ship load on the emergency power distribution board; when the ship is sailing, the power supply in the main power distribution board is connected to the emergency power distribution board through the cable 2, and is connected to the second circuit breaker QF2 through the copper bar or wire in the emergency power distribution board to supply power to the ship load on the emergency power distribution board.

[0028] In summary, the utility model can correspond to the space requirement of the emergency generator, not only reduces the cable configuration, reduces the cost of the power distribution system with the shore power connection function, but also increases the automatic commutation function, and also shunts the shore power current to the main power distribution board and the emergency power distribution board, reduces the configuration capacity of the main power distribution board and the emergency power distribution board, increases the shore power supply stability of the emergency power distribution board, so as to facilitate promotion and use.

[0029] The above embodiment only illustrates the principle and effect of the utility model, and is not used to limit the utility model. All equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the utility model should be covered by the claims of the utility model.

Claims

1. A power distribution system with shore connection function, comprising a main power distribution board and an emergency power distribution board, the main power distribution board is provided with a main power distribution module, and the emergency power distribution board is provided with an emergency power distribution module, characterized in that: The shore power module is further connected with the input end of the emergency power distribution board and the output end of the shore power module through the cable 2. The shore power module is further connected with the input end of the emergency power distribution board and the output end of the shore power module through the cable 2.

2. The power distribution system with shore connection function according to claim 1, characterized in that: The main power distribution board is installed in the centralized control room on the ship, the main power distribution module comprises a busbar A installed on the main power distribution board and a first circuit breaker connected with the busbar A, and the end of the first circuit breaker away from the busbar A is connected with the input end of the emergency power distribution module and the output end of the shore power module through the cable 2.

3. The power distribution system with shore connection function according to claim 2, characterized in that: The main power distribution module further comprises a sixth circuit breaker connected with the busbar A, a seventh circuit breaker and an eighth circuit breaker connected with the busbar A, the end of the sixth circuit breaker away from the busbar A is connected with the main generator, and the ends of the seventh circuit breaker and the eighth circuit breaker away from the busbar A are connected with the load equipment of the ship.

4. The power distribution system with shore connection functionality of claim 1, wherein: The emergency power distribution board is installed in the emergency power generation room on the ship, the emergency power distribution module comprises a busbar B installed on the emergency power distribution board and a second circuit breaker connected with the busbar B, and the end of the second circuit breaker away from the busbar B is connected with the main power distribution module through the cable 2.

5. The power distribution system with shore connection functionality of claim 4, wherein: The emergency power distribution module further comprises a third circuit breaker connected with the busbar B and interlocked with the second circuit breaker, a ninth circuit breaker and a tenth circuit breaker connected with the busbar B, the end of the third circuit breaker away from the busbar B is connected with the emergency generator, and the ends of the ninth circuit breaker and the tenth circuit breaker away from the busbar B are connected with the load equipment of the ship.

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