CN106451445A - Ship shore power system in multi-machine parallel operation - Google Patents
Ship shore power system in multi-machine parallel operation Download PDFInfo
- Publication number
- CN106451445A CN106451445A CN201611113769.XA CN201611113769A CN106451445A CN 106451445 A CN106451445 A CN 106451445A CN 201611113769 A CN201611113769 A CN 201611113769A CN 106451445 A CN106451445 A CN 106451445A
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- China
- Prior art keywords
- power supply
- supply unit
- host computer
- busbar
- shore
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a ship shore power system in multi-machine parallel operation. The ship shore power system comprises a host computer, a high voltage bus, multiple power distribution units, a busbar and a shore power box, wherein the host computer is connected with control ends of the multiple power distribution units respectively through a communication bus; input ends of the power distribution units are connected with the high voltage bus; output ends of the power distribution units are connected with the busbar; the busbar is connected with the input end of the shore power box; the output end of the shore power box is used for supplying power to a ship; the power distribution units are used for implementing voltage variation and frequency variation processing on the voltage input from the high voltage bas; the host computer is used for controlling the power on/off states and output parameters of the power distribution units; and the output parameters comprise frequency, phase and amplitude of output voltage. According to the ship shore power system, the operation states of multiple power distribution units are controlled by the host computer simultaneously; and through a transfer technique, automatic grid combination and capacity expansion can be implemented if the system output capacity is insufficient, and automatic cut-off can be implemented if the capacity is redundant.
Description
Technical field
The present invention relates to shore electric power technical field, the shipping shore power system running particularly to a kind of multi-machine parallel connection.
Background technology
In the past, the ship in harbour landing pier must adopt marine auxiliary to generate electricity for one day 24 hours, to meet ship use
The demand of electricity.The substantial amounts of oil plant however, the subsidiary engine of ship burns at work, discharges substantial amounts of waste gas, and understands 24 hours not
Discontinuously produce sound pollution.In order to solve this problem, can be by the way of ship be accessed harbour distribution network, using electricity on the bank
Force system is to the ship power supply of landing pier.
In realizing process of the present invention, inventor finds that in prior art, at least there are the following problems：
Existing bank electricity system is usually the situation of single pair of list it is impossible to flexibly control output capacity, thus affecting bank electricity system
, there is inconvenience in the course of the work in the work efficiency of system.
The information being disclosed in this background section is merely intended to increase the understanding of the general background to the present invention, and should not
Recognize when being considered or imply in any form that this information structure has been the prior art well known to persons skilled in the art.
Content of the invention
It is an object of the invention to provide the shipping shore power system that a kind of multi-machine parallel connection runs, thus overcoming spot ship bank
The low defect of electric system work efficiency.
The shipping shore power system that a kind of multi-machine parallel connection provided in an embodiment of the present invention runs, including：Host computer, high pressure are female
Line, multiple power supply unit, busbar and shore connection box；
Described host computer is connected with the control end of multiple described power supply units respectively by communication bus；Described power supply unit
Input be connected with described high voltage bus, the outfan of described power supply unit is connected with described busbar；Described busbar with described
The input of shore connection box is connected, and the outfan of described shore connection box is used for as ship power supply；
Described power supply unit is used for carrying out transformation, frequency-conversion processing to the voltage of described high voltage bus input；Described host computer
For controlling on off state and the output parameter of described power supply unit, described output parameter includes the frequency of output voltage, phase place
And amplitude.
In a kind of possible implementation, this shipping shore power system also includes：Corresponding with multiple described power supply units
Multiple first switches；
Described high voltage bus is respectively by the input phase of multiple described first switches and corresponding described power supply unit
Even.
In a kind of possible implementation, this shipping shore power system also includes：Corresponding with multiple described power supply units
Multiple second switches；
The outfan of described power supply unit is connected with described busbar by corresponding described second switch.
In a kind of possible implementation, this shipping shore power system also includes：Main switch；
Described busbar is connected with the input of described shore connection box by described main switch.
In a kind of possible implementation, described host computer is provided with synchronism switching system；
Described host computer is used for the frequency of the output voltage according to the described synchronism switching system described power supply unit of control, phase
Position and amplitude are consistent with the frequency of line voltage, phase and amplitude.
In a kind of possible implementation, described communication bus supports Modbus, CAN, Profibus-DP or Ethernet
Communication protocol.
The shipping shore power system that a kind of multi-machine parallel connection provided in an embodiment of the present invention runs, multigroup power supply unit is using in parallel
Layout, parallel connection is worn and is tied between high voltage bus and busbar, and the setting of multigroup distributor fully meets output and requires.Host computer is simultaneously
Control the running status of multiple power supply units, by handoff technique, the auto-parallel dilatation when system output capacity is not enough, capacity
Automatically cut away when having a surplus, fault machine drops volume after cutting off, and effectively increases the work efficiency of bank electricity system.
Other features and advantages of the present invention will illustrate in the following description, and, partly become from description
Obtain it is clear that or being understood by implementing the present invention.The purpose of the present invention and other advantages can be by the explanations write
In book, claims and accompanying drawing, specifically noted structure is realizing and to obtain.
Brief description
Accompanying drawing is used for providing a further understanding of the present invention, and constitutes a part for description, the reality with the present invention
Apply example and be used for explaining the present invention together, be not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the first structure figure of the shipping shore power system that multi-machine parallel connection runs in the embodiment of the present invention；
Fig. 2 is the second structure chart of the shipping shore power system that multi-machine parallel connection runs in the embodiment of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawings, the specific embodiment of the present invention is described in detail, it is to be understood that the guarantor of the present invention
Shield scope is not limited by specific embodiment.
Purpose, technical scheme and advantage for making the embodiment of the present invention are clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described it is clear that described embodiment is
The a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment being obtained under the premise of not making creative work, broadly falls into the scope of protection of the invention.Unless
Separately have other to explicitly indicate that, otherwise in entire disclosure and claims, term " inclusion " or its conversion as "comprising" or
" including " etc. will be understood to comprise stated element or ingredient, and does not exclude other elements or other composition
Part.
Special word " exemplary " means " as example, embodiment or illustrative " here.Here as " exemplary "
Illustrated any embodiment should not necessarily be construed as preferred or advantageous over other embodiments.
In addition, in order to better illustrate the present invention, giving numerous details in specific embodiment below.
It will be appreciated by those skilled in the art that not having some details, the present invention equally can be implemented.In some instances, for
Method well known to those skilled in the art, means, element are not described in detail, in order to highlight the purport of the present invention.
Embodiments provide the shipping shore power system that a kind of multi-machine parallel connection runs, Fig. 1 is that the structure of this system is shown
It is intended to.Specifically, this shipping shore power system includes：Host computer 1, high voltage bus 2, multiple power supply unit 3, busbar 4 and shore connection box
5.
Wherein, host computer 1 is connected with the control end of multiple power supply units 3 respectively by communication bus；Power supply unit 3 defeated
Enter end to be connected with high voltage bus 2, the outfan of power supply unit 3 is connected with busbar 4；Busbar 4 is connected with the input of shore connection box 5,
The outfan of shore connection box 5 is used for as ship power supply.
The concrete integrated transformer of power supply unit 3, converter etc., the voltage for inputting to high voltage bus 2 carries out transformation, change
Frequency is processed；Host computer 1 is used for controlling on off state and the output parameter of power supply unit 3, and this output parameter includes output voltage
Frequency, phase and amplitude, this on off state is used for representing whether power supply unit 3 is in closure state, closes when power supply unit is in
During conjunction state, this power supply unit 3 provides electric energy for busbar 4.
In the embodiment of the present invention, the work process of this shipping shore power system is specific as follows：Host computer 1 real-time monitoring ship bank
Whether the output capacity of electric system and failure condition etc., control the on off state of power supply unit 3, close and join according to monitoring result
Electric unit 3 is so that this power supply unit 3 works；Determine frequency, the phase and amplitude of power supply unit output voltage, this is joined afterwards simultaneously
Electric unit 3 can think connected ship power supply by shore connection box 5.Host computer controls multiple power supply units simultaneously, by switching
Technology, the auto-parallel dilatation when system output capacity is not enough, automatically cut away when capacity is had a surplus, fault machine drops volume after cutting off.
In a kind of possible implementation, shown in Figure 2, this device also includes：Corresponding with multiple power supply units
Multiple first switches 6.High voltage bus 2 is respectively by the input phase of multiple first switches 6 and corresponding power supply unit 3
Even.
In the embodiment of the present invention, first switch 6 primarily serves protective effect, for example, needing power supply unit 3 is tieed up
When repairing or detecting, by disconnecting first switch 6 thus avoiding presence between maintainer or testing staff and high voltage bus 2 direct
Connect, prevent to get an electric shock.First switch 6 simultaneously can also as the controlling switch of respective branch, by this first switch 6
The break-make of controlling brancher.
In a kind of possible implementation, shown in Figure 2, this device also includes：Corresponding with multiple power supply units 3
Multiple second switches 7；The outfan of power supply unit 3 is connected with busbar 4 by corresponding second switch 7.
In the embodiment of the present invention, second switch 7 is the controlling switch of power supply unit respective branch, and host computer 1 passes through to control
Second switch 7 is such that it is able to control the break-make of corresponding power supply unit 3.
Wherein, first switch may be disposed in incoming line cabinet, and second switch is arranged in outgoing line cabinet, by arrange incoming line cabinet and
Outgoing line cabinet can specification cabling effectively, prevent route transposition.
In a kind of possible implementation, shown in Figure 2, this device also includes：Main switch 8；Busbar 4 passes through always to open
Close 8 to be connected with the input of shore connection box.This main switch is the main switch of shipping shore power system, by controlling this main switch 8
To control whether as ship power supply.
In the embodiment of the present invention, first switch, second switch, main switch are specifically as follows chopper.
In a kind of possible implementation, host computer 1 is provided with synchronism switching (Syn-transfer) system；Host computer 1
For according to synchronism switching system control power supply unit 3 output voltage frequency, phase and amplitude and busbar voltage frequency,
Phase and amplitude is consistent.Specifically, host computer utilizes Phase Lock Technique, make the frequency converter output voltage of power supply unit 3 frequency,
The frequency of phase place, amplitude and busbar voltage, phase place, amplitude are consistent, and carry out the no-harass switch between converter, prevent because becoming
There is phase contrast between frequency device output voltage and busbar voltage and produce dash current, damage bank side or shipboard equipment.Subtract simultaneously
" short circuit current " that produce during little switching is it is ensured that the reliability of synchronism switching.
In a kind of possible implementation, communication bus supports Modbus, CAN, Profibus-DP or ethernet communication
Agreement.For example, by using differential signal transmission CAN agreement can transmission of control signals well, and anti-interference energy
Power is strong.
The shipping shore power system that a kind of multi-machine parallel connection provided in an embodiment of the present invention runs, multigroup power supply unit is using in parallel
Layout, parallel connection is worn and is tied between high voltage bus and busbar, and the setting of multigroup distributor fully meets output and requires.Host computer is simultaneously
Control the running status of multiple power supply units, by handoff technique, the auto-parallel dilatation when system output capacity is not enough, capacity
Automatically cut away when having a surplus, fault machine drops volume after cutting off, and effectively increases the work efficiency of bank electricity system.
Device embodiment described above is only that schematically the wherein said unit illustrating as separating component can
To be or to may not be physically separate, as the part that unit shows can be or may not be physics list
Unit, you can with positioned at a place, or can also be distributed on multiple NEs.Can be selected it according to the actual needs
In the purpose to realize this embodiment scheme for some or all of module.Those of ordinary skill in the art are not paying creativeness
Work in the case of, you can to understand and to implement.
Through the above description of the embodiments, those skilled in the art can be understood that each embodiment can
Mode by software plus necessary general hardware platform to be realized naturally it is also possible to pass through hardware.Based on such understanding, on
That states that technical scheme substantially contributes to prior art in other words partly can be embodied in the form of software product, should
Computer software product can store in a computer-readable storage medium, such as ROM/RAM, magnetic disc, CD etc., including some fingers
Order is with so that a computer equipment (can be personal computer, server, or network equipment etc.) executes each enforcement
Example or some partly described methods of embodiment.
The description of the aforementioned specific illustrative embodiment to the present invention illustrate that and illustration purpose.These descriptions
It is not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to above-mentioned teaching, can much be changed
And change.The purpose of selecting and describing the exemplary embodiment is that explaining that the certain principles of the present invention and its reality should
With so that those skilled in the art be capable of and utilize the present invention various different exemplary and
Various different selections and change.The scope of the present invention is intended to be limited by claims and its equivalents.
Claims (6)
1. the shipping shore power system that a kind of multi-machine parallel connection runs is it is characterised in that include：Host computer, high voltage bus, multiple distribution
Unit, busbar and shore connection box；
Described host computer is connected with the control end of multiple described power supply units respectively by communication bus；Described power supply unit defeated
Enter end to be connected with described high voltage bus, the outfan of described power supply unit is connected with described busbar；Described busbar and described bank electricity
The input of case is connected, and the outfan of described shore connection box is used for as ship power supply；
Described power supply unit is used for carrying out transformation, frequency-conversion processing to the voltage of described high voltage bus input；Described host computer is used for
Control on off state and the output parameter of described power supply unit, described output parameter includes frequency, phase place and the width of output voltage
Value.
2. shipping shore power system according to claim 1 is it is characterised in that also include：With multiple described power supply unit phases
Corresponding multiple first switch；
Described high voltage bus is connected with the input of corresponding described power supply unit by multiple described first switches respectively.
3. shipping shore power system according to claim 1 is it is characterised in that also include：With multiple described power supply unit phases
Corresponding multiple second switch；
The outfan of described power supply unit is connected with described busbar by corresponding described second switch.
4. shipping shore power system according to claim 1 is it is characterised in that also include：Main switch；
Described busbar is connected with the input of described shore connection box by described main switch.
5. shipping shore power system according to claim 1 is it is characterised in that described host computer is provided with synchronism switching system；
Described host computer be used for according to described synchronism switching system control the frequency of output voltage of described power supply unit, phase place and
Amplitude is consistent with the frequency of line voltage, phase and amplitude.
6. according to the arbitrary described shipping shore power system of claim 1-5 it is characterised in that described communication bus is supported
Modbus, CAN, Profibus-DP or ethernet communication protocol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611113769.XA CN106451445A (en) | 2016-12-06 | 2016-12-06 | Ship shore power system in multi-machine parallel operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611113769.XA CN106451445A (en) | 2016-12-06 | 2016-12-06 | Ship shore power system in multi-machine parallel operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106451445A true CN106451445A (en) | 2017-02-22 |
Family
ID=58217671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611113769.XA Pending CN106451445A (en) | 2016-12-06 | 2016-12-06 | Ship shore power system in multi-machine parallel operation |
Country Status (1)
| Country | Link |
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| CN (1) | CN106451445A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109995072A (en) * | 2018-01-02 | 2019-07-09 | 希望森兰科技股份有限公司 | High-voltage frequency converter multi-machine parallel connection shore electric power device and its control method |
| CN110932271A (en) * | 2019-12-13 | 2020-03-27 | 江苏中智海洋工程装备有限公司 | Boats and ships bank electricity master-slave control multiplex condition adaptive system |
| CN112886588A (en) * | 2021-04-09 | 2021-06-01 | 东方日立(成都)电控设备有限公司 | Power autonomous transfer method and system for multi-machine parallel shore power supply device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109995072A (en) * | 2018-01-02 | 2019-07-09 | 希望森兰科技股份有限公司 | High-voltage frequency converter multi-machine parallel connection shore electric power device and its control method |
| CN110932271A (en) * | 2019-12-13 | 2020-03-27 | 江苏中智海洋工程装备有限公司 | Boats and ships bank electricity master-slave control multiplex condition adaptive system |
| CN112886588A (en) * | 2021-04-09 | 2021-06-01 | 东方日立(成都)电控设备有限公司 | Power autonomous transfer method and system for multi-machine parallel shore power supply device |
| CN112886588B (en) * | 2021-04-09 | 2023-03-14 | 东方日立(成都)电控设备有限公司 | Power autonomous transfer method and system for multi-machine parallel shore power supply device |
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Application publication date: 20170222 |
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