CN209150720U - A kind of looped network of DC power electric propulsion system - Google Patents
A kind of looped network of DC power electric propulsion system Download PDFInfo
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- CN209150720U CN209150720U CN201920009578.1U CN201920009578U CN209150720U CN 209150720 U CN209150720 U CN 209150720U CN 201920009578 U CN201920009578 U CN 201920009578U CN 209150720 U CN209150720 U CN 209150720U
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Abstract
The utility model discloses a kind of looped network of DC power electric propulsion systems, are related to marine propuision system technical field, including the one-to-one several power supply branches of several DC master rows, several busbar breakers and DC master row and several electricity consumption branches；It is netted that the DC master row module is sequentially connected end to end cyclization；The DC master row module includes the DC master row being serially connected and busbar breaker, and is in series with the busbar breaker between the every two adjacent DC master row；The power supply branch is separately connected the corresponding DC master row, and the electricity consumption branch is also separately connected the DC master row；Since the connection of three DC master rows is annular in shape, any one DC master row failure and when being isolated with another two DC master row, another two DC master row throws away interconnection, improves the reliability of system.
Description
Technical field
The utility model relates to marine propuision system technical field, specially a kind of looped network of DC power electric propulsion system.
Background technique
In Electrical Propulsion Ship, DC distribution technology is good with its power compatibility, power distribution efficiency is high, electric energy loss is small etc.
Feature has become the upgrade technique of new generation of substitution AC distribution；Compared with AC distribution electric propulsion technology, systematicness
Energy, volume, weight show technical advantage outstanding, and can bring in terms of energy-saving, emission reduction for shipowner
Larger economic benefit is the technology trends of the following watercraft electric propulsion system.
In the electric propulsion system design of current DC distribution (or networking), distribution system is segmented with double DC trunk
Based on the networking power supply structure form for being combined into common DC bus with busbar breaker, the power supply reliability of the distribution system is basic
It can satisfy the various ships of the little unpowered location requirement of system power., power supply big for system power and power load
More, power supply reliability requires very high electric system ship, and above-mentioned double DC trunk segmental structure form can not meet very well
System designs general requirement.
Utility model content
The purpose of this utility model is to provide a kind of looped network of DC power electric propulsion systems, to solve in above-mentioned background technique
The technological deficiency or deficiency of proposition.
To achieve the above object, the utility model provides the following technical solutions: a kind of looped network of DC power electric propulsion system, packet
Include several DC master row modules, several busbar breakers, several power supply branches and several electricity consumption branches；The power supply branch and
The DC master row module corresponds；
It is netted that the DC master row module is sequentially connected end to end cyclization；The DC master row module include be serially connected it is straight
Busbar and busbar breaker are flowed, and is in series with the busbar breaker between the every two adjacent DC master row；
The power supply branch is separately connected the corresponding DC master row, and the electricity consumption branch is also separately connected the direct current
Busbar.
Further, the DC master row module include a DC master row and two busbar breakers, two
A busbar breaker is series at the both ends of the DC master row respectively, makes between the every two adjacent DC master row
There are two the busbar breakers for series connection.
Further, the DC master row module uses modularized design and production.
Further, the power supply branch includes at least two generator powered branches；The generator powered branch packet
Variable-speed generator, rectification unit are included, the output end of the variable-speed generator connects the ac input end of the rectification unit, described
The DC output end of rectification unit connects the corresponding DC master row.
Further, the power supply branch further includes at least one battery power supply branch；Battery power supply branch includes
Battery group and DC/DC converter, the battery group connect one end of the DC/DC converter, the DC/DC converter
The other end connects DC master row.
Further, the generator powered branch further includes the first DC fuse, the first DC fuse string
It is associated between the rectification unit and the DC master row；
The battery power supply branch further includes the second DC fuse and third DC fuse, the second direct current fusing
Device is connected between the battery group and the DC/DC converter, and it is molten that the third DC fuse is connected on the DC/DC
Between disconnected device and the DC master row.
Further, the electricity consumption branch is several propulsion branches, several assistant load branches and several daily negative respectively
Carry branch；The propulsion branch is separately connected the different DC master rows；The assistant load branch is separately connected different
The DC master row；The daily load branch is also separately connected the different DC master rows；
The propulsion branch includes promoting frequency converter and propulsion electric machine, and the propulsion electric machine connects the propulsion frequency converter
Ac output end, the direct-flow input end for promoting frequency converter connect the DC master row；
The assistant load branch includes supplementary AC load and auxiliary converter, and the supplementary AC loads described in connection
The direct-flow input end of the ac output end of auxiliary converter, the auxiliary converter connects the DC master row；
The daily load branch includes daily panel, isolating transformer and auxiliary inversion unit, the daily distribution
Plate connects the secondary side of the isolating transformer, and the primary side of the isolating transformer connects the exchange of the auxiliary inversion unit
The direct-flow input end of output end, the auxiliary inversion unit connects the DC master row.
Further, the power supply branch is at least two generator direct current branch and at least one battery power supply branch respectively
Road, the DC master row for promoting branch connection are all connected with the generator powered branch.
Further, the propulsion branch further includes the 4th DC fuse, and the 4th DC fuse is connected on institute
It states and promotes between frequency converter and the DC master row；
The assistant load branch further includes the 5th DC fuse, and the 5th DC fuse is connected on the auxiliary
Between frequency converter and the DC master row；
The daily load branch further includes the 6th DC fuse, and the 6th DC fuse is connected on the auxiliary
Between inversion unit and the DC master row.
Compared with prior art, the beneficial effect of the utility model looped network of DC power electric propulsion system is:
1. since the connection of three DC master rows is in looped network shape, any one DC master row failure and with another two DC master row
When isolation, another two DC master row throws away interconnection, improves the reliability of system.
2. due between every two DC master row series connection there are two busbar breaker, when two DC master row modules at a distance of compared with
When remote, settable busbar breaker operates the DC master row when some DC master row failure near each DC master row
Neighbouring busbar breaker, the DC master row can be isolated with other DC master rows, more convenient operation, and reliability is higher.
Detailed description of the invention
Fig. 1 is the electrical block diagram of the utility model looped network of DC power electric propulsion system.
In appended drawing reference: generator powered branch 1；Battery power supply branch 2；Promote branch 3；Assistant load branch 4；It is daily
Load branch 5；DC master row module 6.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
The utility model proposes a kind of looped network of DC power electric propulsion systems, as shown in Figure 1, including three DC master row moulds
Block 6, three power supply branches and six electricity consumption branches.Three DC master row modules 6 are that the first DC master row 61, second is straight respectively
Busbar 62 and third DC master row 63 are flowed, and each DC master row module includes a DC master row and two mother open circuits
Device.First DC master row 61 includes the first DC master row BUS1, the first busbar breaker QF1 and the second busbar breaker QF2；The
Two DC master rows 62 include the second DC master row BUS2, third busbar breaker QF3 and the 4th busbar breaker QF4；Third is straight
Flowing busbar 63 includes third DC master row BUS3, the 5th busbar breaker QF5 and the 6th busbar breaker QF6.First mother is disconnected
One end of road device QF1 connects one end of the first DC master row BUS1, and the other end of the first DC master row BUS1 connects the second mother
One end of circuit breaker Q F2, one end of the other end connection third busbar breaker QF3 of the second busbar breaker QF2；Third mother
The other end of circuit breaker Q F3 connects one end of the second DC master row BUS2, the other end connection the 4th of the second DC master row BUS2
One end of busbar breaker QF4, the other end of the 4th busbar breaker QF4 connect one end of the 5th busbar breaker QF5；5th
One end of the other end connection third DC master row BUS3 of busbar breaker QF5, the other end connection of third DC master row BUS3
The other end of one end of the 6th busbar breaker QF6, the 6th busbar breaker QF6 connects the another of the first busbar breaker QF1
End；Three DC master rows and six busbar breakers are made to surround looped network shape, and two mothers in the same DC master row module
Breaker is series at DC master row both ends respectively, and connecting between every two DC master row, there are two busbar breakers.
When the first DC master row BUS1 failure, the first busbar breaker QF1 and the second busbar breaker QF2 is cut off, is made
First DC master row BUS1 is isolated with other DC master rows；When the second DC master row BUS2 failure, cutting third mother open circuit
The second DC master row BUS2 is isolated with other DC master rows in device QF3 and the 4th busbar breaker QF4；When third DC master row
When BUS3 failure, the 5th busbar breaker QF5 and the 6th busbar breaker QF6 is cut off, third DC master row BUS3 and other are made
DC master row isolation.Since the connection of three DC master rows is in looped network shape, any one DC master row failure and with another two direct current
When busbar is isolated, another two DC master row is still connected with each other, and improves the reliability of system.
Two busbar breakers in the same DC master row module are arranged near DC master row, if two direct currents
Busbar module is apart from each other, when the DC master row failure in one of DC master row module, need to only cut off the DC master row
Two busbar breakers in module, DC master row can be isolated, without cutting off another DC master row remotely
Busbar breaker in module, more convenient operation.Meanwhile each DC master row module is suitable for modularized production, compared to every
Two DC master row modules are only connected a busbar breaker, are series at direct current without the concern for busbar breaker when joint connection in site
Adjacent respective one end of DC master row module need to only be directly connected to, improve production and installation by which end of busbar
Efficiency.
Three power supply branches are two generator powered branches 1 and battery power supply branch 2 respectively, and two generators
Power supply branch 1 is separately connected the first DC master row BUS1 and third DC master row BUS3, and battery power supply branch 2 connects the second direct current
Busbar BUS3.
Generator powered branch 1 includes variable-speed generator, rectification unit REC1 and the first DC fuse F1.Variable speed generation
Machine is made of adjustable engine VDE1 and then generator G1, adjustable engine VDE1 drawing generator G1 operation, generator G1's
Output end connects the ac input end of rectification unit REC1, and the DC output end of rectification unit REC1 connects the fusing of the first direct current
The other end of one end of device F1, the first DC fuse F1 connects the first DC master row BUS1 or third DC master row BUS3.
Adjustable engine VDE1 drives generator G1 power generation, realizes the control to generator G1 generated energy.Rectification unit REC1 will generate electricity
The AC conversion that unit G1 is issued is direct current, and is sent to the first DC master row BUS1 or the second DC master row BUS2.When
When generator powered branch 1 breaks down, the first DC fuse F1 fusing can be female by generator powered branch 1 and direct current
Row's cutting.
Battery power supply branch includes that battery group BAT1, DC/DC converter CON1, the second DC fuse F2 and third are straight
Flow fuse F3.One end of battery group BA1 the second DC fuse of connection F2, the other end connection of the second DC fuse F2
One end of DC/DC converter CON1, one end of the other end connection third DC fuse F3 of DC/DC converter CON1, third
The other end of DC fuse F3 connects the second DC master row BUS2.When ship's navigation is at tranquil sea, propulsion system disappears
The energy of consumption is less, the extra energy storage that battery group BAT1 releases generating set G1, DC/DC converter CON1
It will charge after direct current change voltage and current on DC master row to battery group BAT1.When sea stormy waves is larger, system is promoted
The energy consumed of uniting is more, and the torque that the electric energy or its dynamic property that generating set G1 is issued are insufficient for propulsion electric machine is wanted
It asks, battery group BAT1 discharges to DC master row to guarantee that Frequency Converter Control propulsion electric machine has preferable dynamic characteristic.Work as battery
When power supply branch trouble, the second DC fuse F2 or third DC fuse F3 fusing, disengagement failure point.
Because battery group BAT1, which needs first to store energy, to power to DC master row, it is provided at least two hairs
Motor power supply branch 1, when one of 1 failure of generator powered branch, and the energy stored in battery group BAT1 is finished
When, another generator powered branch can also power to each DC master row.
Six electricity consumption branches are two propulsion branches, 3, two assistant load branches 4 and two daily load branch 5 respectively.
Two of them promote branch 3 to be separately connected the first DC master row BUS1 and third DC master row BUS3, two assistant load branches 4
It is separately connected the first DC master row BUS1 and the second DC master row BUS2, two daily load branch 5 are separately connected the second direct current
Busbar BUS2 and third DC master row BUS3.
Branch 3 is promoted to include propulsion electric machine 31, promote frequency converter INV1 and the 4th fuse F4.The connection of propulsion electric machine 31 pushes away
Into the ac output end of frequency converter INV1, the direct-flow input end of frequency converter INV1 is promoted to connect one end of the 4th fuse F4, the
The other end of four fuse F4 connects the first DC master row BUS1 or third DC master row BUS3.Promote frequency converter INV1 in the future
It is voltage, the adjustable alternating current of frequency from the DC conversion on DC master row, and alternating current is sent to propulsion electric machine 31, driving
Propeller and then promotion ship advance.When promoting 3 failure of branch, the 4th fuse F4 fusing will promote branch 3 and direct current female
Row's isolation.
Assistant load branch 4 includes supplementary AC load 41, auxiliary converter INV2 and the 5th fuse F5.Supplementary AC
The ac output end of 41 connection auxiliary converter INV2 of load, the direct-flow input end of auxiliary converter INV2 connect the 5th fuse
The other end of one end of F5, the 5th fuse F5 connects the first DC master row BUS1 or the second DC master row BUS2.Assist frequency conversion
Direct current from DC master row is converted into the adjustable alternating current of voltage, frequency by device INV2, and alternating current is sent to auxiliary and is handed over
Current load 41, for controlling the various marine pumps on ship.When assistant load 4 failure of branch, the 5th fuse F5 fusing will
Assistant load branch 4 is isolated with DC master row.
Daily load branch 5 includes daily panel 51, isolating transformer 52, subordinate inverter INV3 and the 6th fuse
F6.Daily panel 51 connects the secondary side of isolating transformer 42, and the primary side of isolating transformer connects subordinate inverter INV3
Ac output end, the direct-flow input end of subordinate inverter INV3 connects one end of the 6th fuse F6, the 6th fuse F6's
The other end connects the second DC master row BUS2 or third DC master row BUS3.Subordinate inverter INV3 will be from the straight of DC master row
Galvanic electricity is converted into alternating current, and passes through isolating transformer 52 after alternating current is filtered and be supplied to daily panel 51, is used for
Daily electricity consumption on ship is provided.When daily 5 failure of load branch, the 6th fuse F6 fusing, by daily load branch 5 with
DC master row isolation.
Consumption power is very big when being worked normally due to propulsion electric machine 31, and battery group BAT1, which individually powers, is unable to satisfy propulsion
The requirement that motor 31 works normally.Therefore branch 3 is promoted only to connect the first DC master row BUS1 and third DC master row BUS3, and
First DC master row BUS1 and third DC master row BUS3 are all connected with generator powered branch 1, when due to failure cause it is each straight
When stream bus is mutually isolated, powered from each generator G1 to each propulsion branch 3.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (9)
1. a kind of looped network of DC power electric propulsion system, which is characterized in that including several DC master row modules, the open circuit of several mothers
Device, several power supply branches and several electricity consumption branches；The power supply branch and the DC master row module correspond；
It is netted that the DC master row module is sequentially connected end to end cyclization；The DC master row module includes the direct current mother being serially connected
Row and busbar breaker, and the busbar breaker is in series between the every two adjacent DC master row；
The power supply branch is separately connected the corresponding DC master row, and it is female that the electricity consumption branch is also separately connected the direct current
Row.
2. a kind of looped network of DC power electric propulsion system according to claim 1, which is characterized in that the DC master row module
Including a DC master row and two busbar breakers, two busbar breakers are series at the direct current respectively
The both ends of busbar, making between the every two adjacent DC master row series connection, there are two the busbar breakers.
3. a kind of looped network of DC power electric propulsion system according to claim 2, which is characterized in that the DC master row module
Using modularized design and production.
4. a kind of looped network of DC power electric propulsion system according to claim 1, which is characterized in that the power supply branch includes
At least two generator powered branches；The generator powered branch includes variable-speed generator, rectification unit, the variable speed generation
The output end of machine connects the ac input end of the rectification unit, and the DC output end connection of the rectification unit is corresponding described
DC master row.
5. a kind of looped network of DC power electric propulsion system according to claim 4, which is characterized in that the power supply branch also wraps
Include at least one battery power supply branch；The battery power supply branch includes battery group and DC/DC converter, the battery group
One end of the DC/DC converter is connected, the other end of the DC/DC converter connects DC master row.
6. a kind of looped network of DC power electric propulsion system according to claim 5, which is characterized in that the generator powered branch
Road further includes the first DC fuse, first DC fuse be connected on the rectification unit and the DC master row it
Between；
The battery power supply branch further includes the second DC fuse and third DC fuse, the second DC fuse string
It is associated between the battery group and the DC/DC converter, the third DC fuse is connected on the DC/DC fuse
Between the DC master row.
7. a kind of looped network of DC power electric propulsion system according to claim 1, which is characterized in that the electricity consumption branch difference
It is several propulsion branches, several assistant load branches and several daily load branch；The propulsion branch is separately connected different
The DC master row；The assistant load branch is separately connected the different DC master rows；The daily load branch also divides
The different DC master rows is not connected；
The propulsion branch includes promoting frequency converter and propulsion electric machine, and the propulsion electric machine connects the exchange for promoting frequency converter
Output end, the direct-flow input end for promoting frequency converter connect the DC master row；
The assistant load branch includes supplementary AC load and auxiliary converter, and the supplementary AC load connects the auxiliary
The direct-flow input end of the ac output end of frequency converter, the auxiliary converter connects the DC master row；
The daily load branch includes daily panel, isolating transformer and auxiliary inversion unit, and the daily panel connects
The secondary side of the isolating transformer is connect, the primary side of the isolating transformer connects the exchange output of the auxiliary inversion unit
The direct-flow input end at end, the auxiliary inversion unit connects the DC master row.
8. a kind of looped network of DC power electric propulsion system according to claim 7, which is characterized in that the power supply branch difference
It is at least two generator direct current branch and at least one battery power supply branch, the DC master row for promoting branch connection
It is all connected with the generator powered branch.
9. a kind of looped network of DC power electric propulsion system according to claim 7, which is characterized in that the propulsion branch also wraps
The 4th DC fuse is included, the 4th DC fuse is connected between the propulsion frequency converter and the DC master row；
The assistant load branch further includes the 5th DC fuse, and the 5th DC fuse is connected on the auxiliary frequency conversion
Between device and the DC master row；
The daily load branch further includes the 6th DC fuse, and the 6th DC fuse is connected on the auxiliary inversion
Between unit and the DC master row.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920009578.1U CN209150720U (en) | 2019-01-03 | 2019-01-03 | A kind of looped network of DC power electric propulsion system |
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| CN201920009578.1U CN209150720U (en) | 2019-01-03 | 2019-01-03 | A kind of looped network of DC power electric propulsion system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113364063A (en) * | 2021-08-10 | 2021-09-07 | 湖北东湖实验室 | Radial power grid structure of comprehensive electric power system of pure battery power ship and control method |
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2019
- 2019-01-03 CN CN201920009578.1U patent/CN209150720U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113364063A (en) * | 2021-08-10 | 2021-09-07 | 湖北东湖实验室 | Radial power grid structure of comprehensive electric power system of pure battery power ship and control method |
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