CN109768539A - Dc distribution network topological structure - Google Patents
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Abstract
This application involves a kind of dc distribution network topological structures, including the first input unit, the second input unit, interconnection switch, multiple circuit distribution networks, multiple first kind radial distribution networks networks and multiple second class radial distribution networks networks；One end of circuit distribution network connects the first input unit, the other end connects the second input unit；One end of first kind radial distribution networks network connects the first input unit；One end of second class radial distribution networks network connects the second input unit；The other end connection interconnection switch of the other end of first kind radial distribution networks network, the second class radial distribution networks network；Circuit distribution network, first kind radial distribution networks network and the second class radial distribution networks network are used for corresponding power load network power supply, to establish dual power supply multi-layer dc distribution network, when any distribution network breaks down, electric energy is provided for the distribution network to break down by other normal distribution networks, effectively improves the power supply reliability and safety of user.
Description
Technical field
This application involves power electronics fields, more particularly to a kind of dc distribution network topological structure.
Background technique
With the development of power electronics technology, compared to AC distribution net, DC distribution net is all achieved at many aspects
Technology and economic advantages have huge development prospect.DC distribution net is the intelligence with advanced energy management system
Energy, stable alternating current-direct current mixing Wide Area Network.Compared with AC distribution net, DC distribution net has some clear advantages:
In the identical situation of dielectric level, the transimission power of DC distribution net is about 1.5 times of AC distribution net；DC distribution net can
Facilitate the access of various distributed generation resources and electric automobile charging station；DC distribution net and there is no eddy-current loss and routes
Reactive loss, the loss of DC distribution net are only the 15%~50% of AC distribution net；Theoretically DC distribution net does not have frequency
The problems such as deviation, imbalance of three-phase voltage and reactive compensation, thus can effectively avoid voltage fluctuation and flicker, frequency shift (FS),
The problems such as harmonic pollution, can effectively improve power quality.
Just because of DC distribution net compared to AC distribution netting gear for above-mentioned plurality of advantages, DC distribution net increasingly by
To favor, still, during realization, inventor has found that at least there are the following problems: Traditional DC power distribution network in traditional technology
Network power supply reliability and safety are low.
Summary of the invention
Based on this, it is necessary to for the low problem of Traditional DC distribution network power supply reliability and safety, provide one kind
Dc distribution network topological structure.
To achieve the goals above, on the one hand, the embodiment of the present application provides a kind of dc distribution network topological structure, packet
Include the first input unit, the second input unit, interconnection switch, multiple circuit distribution networks, multiple first kind radial distribution networks networks with
And multiple second class radial distribution networks networks；
One end of circuit distribution network connects the first input unit, the other end connects the second input unit；The first kind is radial to match
One end of electric network connects the first input unit；One end of second class radial distribution networks network connects the second input unit；First kind spoke
Penetrate the other end of shape distribution network, the other end connection interconnection switch of the second class radial distribution networks network；
First input unit is for connecting the first high voltage power supply；Second input unit is for connecting the second high voltage power supply；Match in circuit
Electric network, first kind radial distribution networks network and the second class radial distribution networks network are used to supply to corresponding power load network
Electricity；
Wherein, primary Ioops distribution network in office, first kind radial distribution networks network or the second class radial distribution networks network go out
When existing preset failure, any circuit distribution network in normal operating conditions, first kind radial distribution networks network or the second class
Radial distribution networks network gives corresponding power load network power supply.
It in one of the embodiments, further include multiple first kind power generator, multiple second class power generator and more
A third class power generator；
Each first kind power generator corresponds access circuit distribution network；Each second class power generator corresponds access
First kind radial distribution networks network；Each third class power generator corresponds the second class radial distribution networks network of access.
First kind power generator includes one of following device or any combination in one of the embodiments: too
Positive energy power generator, photovoltaic power generation apparatus and generator；
Second class power generator includes one of following device or any combination: device of solar generating, photovoltaic hair
Electric installation and generator；
Third class power generator includes one of following device or any combination: device of solar generating, photovoltaic hair
Electric installation and generator.
It in one of the embodiments, further include multiple first kind energy storage devices, multiple second class energy storage devices and more
A third class energy storage device；
Each first kind energy storage device corresponds access circuit distribution network；Each second class energy storage device corresponds access
First kind radial distribution networks network；Each third class energy storage device corresponds the second class radial distribution networks network of access.
It in one of the embodiments, further include multiple on-off systems；
One end of circuit distribution network, one end of first kind radial distribution networks network pass through the first input of on-off system connection
Portion；Circuit distribution network connects power load network by on-off system；
The other end of circuit distribution network, one end of the second class radial distribution networks network are defeated by on-off system connection second
Enter portion.
On-off system is switch in one of the embodiments,.
In one of the embodiments, one end of circuit distribution network, first kind radial distribution networks network one end pass through
First bus connects the first input unit；
The other end of circuit distribution network, one end of the second class radial distribution networks network are defeated by the connection second of the second bus
Enter portion.
The first input unit is the first inverter in one of the embodiments,；Second input unit is the second inverter.
Circuit distribution network includes first transmission line and second transmission line in one of the embodiments,；
One end of first transmission line connects the first bus, and the other end is for connecting power load network；Second transmission line
One end connects the second bus, and the other end is for connecting power load network.
First kind radial distribution networks network includes third transmission line in one of the embodiments,；Second class is radial to match
Electric network includes the 4th transmission line；
One end of third transmission line connects the first bus, and the other end connects interconnection switch；One end of third transmission line connects
Second bus, the other end connect interconnection switch.
A technical solution in above-mentioned technical proposal is had the following advantages and beneficial effects:
Each embodiment that the application dc distribution network topological structure provides, including it is the first input unit, the second input unit, more
A circuit distribution network, interconnection switch, multiple first kind radial distribution networks networks and multiple second class radial distribution networks networks；
One end of circuit distribution network connects the first input unit, the other end connects the second input unit；First kind radial distribution networks network
One end connects the first input unit；One end of second class radial distribution networks network connects the second input unit；The radial distribution of the first kind
The other end connection interconnection switch of the other end of network, the second class radial distribution networks network；Wherein, the first input unit is for connecting
First high voltage power supply；Second input unit is for connecting the second high voltage power supply；Circuit distribution network, first kind radial distribution networks network
It is used for the second class radial distribution networks network to corresponding power load network power supply, its working principle is that primary Ioops distribution in office
It is any to be in normal work when preset failure occur in network, first kind radial distribution networks network or the second class radial distribution networks network
The circuit distribution network, first kind radial distribution networks network or the second class radial distribution networks network for making state are negative to corresponding electricity consumption
Network power supply is carried, so that dual power supply multi-layer dc distribution network is established, it, can be quick when any distribution network breaks down
The distribution network to break down is cut off, and provides electric energy by other normal distribution networks for the distribution network to break down, is had
Improve the power supply reliability and safety of user in effect ground.
Detailed description of the invention
Fig. 1 is the first structure diagram of dc distribution network topological structure in one embodiment；
Fig. 2 is the second structural schematic diagram of dc distribution network topological structure in one embodiment；
Fig. 3 is the structural schematic diagram of distribution network in one embodiment；
Fig. 4 is the connection schematic diagram of on-off system in one embodiment；
Fig. 5 is the connection schematic diagram of power generator and energy storage device in one embodiment；
Fig. 6 is the application schematic diagram of dc distribution network topological structure in one embodiment.
Specific embodiment
The application in order to facilitate understanding is described more fully the application below with reference to relevant drawings.In attached drawing
Give the preferred embodiment of the application.But the application can realize in many different forms, however it is not limited to this paper institute
The embodiment of description.On the contrary, purpose of providing these embodiments is make it is more thorough and comprehensive to disclosure of this application.
It should be noted that it can be directly to separately when an element is considered as " connection " another element
One element and it is in combination be integrated, or may be simultaneously present centering elements.It is term as used herein " one end ", " another
One end " and similar statement are for illustrative purposes only.
Unless otherwise defined, all technical and scientific terms used herein and the technical field for belonging to the application
The normally understood meaning of technical staff is identical.The term used in the description of the present application is intended merely to description tool herein
The purpose of the embodiment of body, it is not intended that in limitation the application.Term " and or " used herein includes one or more phases
Any and all combinations of the listed item of pass.
In order to solve the problems, such as that Traditional DC distribution network power supply reliability and safety are low, in one embodiment, such as
Shown in Fig. 1, a kind of dc distribution network topological structure, including the first input unit 11, the second input unit 13, interconnection switch are provided
15, multiple circuit distribution networks 17, multiple first kind radial distribution networks networks 19 and multiple second class radial distribution networks networks
21；
One end of circuit distribution network 17 connects the first input unit 11, the other end connects the second input unit 13；First kind spoke
The one end for penetrating shape distribution network 19 connects the first input unit 11；The second input of one end connection of second class radial distribution networks network 21
Portion 13；The other end connection contact of the other end of first kind radial distribution networks network 19, the second class radial distribution networks network 21 is opened
Close 15；
First input unit 11 is for connecting the first high voltage power supply 23；Second input unit 13 is for connecting the second high voltage power supply
25；Circuit distribution network 17, first kind radial distribution networks network 19 and the second class radial distribution networks network 21 are used for corresponding
Power load network 27 is powered；
Wherein, primary Ioops distribution network 17 in office, first kind radial distribution networks network 19 or the second class radial distribution networks
When there is preset failure in network 21, any circuit distribution network 17 in normal operating conditions, first kind radial distribution networks network
19 or second class radial distribution networks network 21 give corresponding power load network 27 power supply.
It should be noted that the first input unit, the second input unit are that dc distribution network topological structure connects external high pressure
The connecting pin of power supply, and high voltage power supply is converted into direct current and is inputed to dc distribution network topological structure by exchanging, specifically,
One input unit connects the first high voltage power supply, and the second input unit connects the second high voltage power supply, further, the first high voltage power supply, the
Two high voltage power supplies are 10KV (kilovolt) AC power source.In one example, the first input unit is first to hand over straight conversion equipment, second
Input unit is the second straight conversion equipment of friendship.Further, in a specific embodiment, the first input unit is first change of current
Device；Second input unit is the second inverter.
The electric energy of first high voltage power supply is transferred to circuit distribution network and first kind spoke connected to it by the first input unit
Penetrate the electric energy of the first high voltage power supply of shape distribution network；The electric energy of second high voltage power supply is transferred to connected to it by the second input unit
Circuit distribution network and the second class radial distribution networks network.In a specific embodiment, as shown in Fig. 2, circuit power distribution network
One end of network 17, one end of first kind radial distribution networks network 19 connect the first input unit 11 by the first bus 29；Match in circuit
The other end of electric network 17, the second class radial distribution networks network 21 one end by the second bus 31 connect the second input unit 13,
It can be simplified by bus connection and connect and be conducive to arrange distribution network.
Circuit distribution network refers to that one end connects the first input unit, the other end connects the second input unit, and inputs with first
Portion and the second input unit are configured to the circuit of corresponding power load network power supply, i.e. circuit distribution network can be from the first input unit
It is power load connected to it that the second high voltage power supply that first high voltage power supply of connection is connected with the second input unit, which obtains electric energy,
Network power supply.Wherein, any two circuit distribution network can form meshed distribution network network, when one of circuit distribution network goes out
When existing preset failure, another circuit distribution network for constituting meshed distribution network network is and the circuit power distribution network of preset failure occurs
The power load network power supply of network connection.Wherein, preset failure is distribution network abnormal electrical power supply or distribution network electricity shortage.
In a specific embodiment, as shown in figure 3, circuit distribution network 17 includes first transmission line 171 and second
Transmission line 173；One end of first transmission line 171 connects the first bus 29, and the other end is for connecting power load network 27；Second
One end of transmission line 173 connects the second bus 31, and the other end is for connecting power load network 27.
First kind radial distribution networks network refers to that one end connects the first input unit and forms radial distribution networks network, the i.e. first kind
Radial distribution networks network can the first input unit connection the first high voltage power supply obtain electric energy, be power load network connected to it
Power supply.Second class radial distribution networks network refers to that one end connects the second input unit and forms radial distribution networks network, i.e. first kind spoke
Penetrate shape distribution network can the second input unit connection the second high voltage power supply obtain electric energy, for power load network connected to it supply
Electricity.
The other end of the other end of first kind radial distribution networks network and the second class radial distribution networks network is all connected to connection
Network switch is connected first kind radial distribution networks network and the second class radial distribution networks network by interconnection switch, realizes a certain
When preset failure occurs in a first kind radial distribution networks network, any normal radial distribution of second class is connected by interconnection switch
Network is the first kind radial distribution networks network power supply for preset failure occur, alternatively, in some the second class radial distribution networks
When preset failure occurs in network, it is preset failure occur that any normal one's mother's sister's class radial distribution networks network, which is connected, by interconnection switch
The power supply of second class radial distribution networks network.Wherein, interconnection switch is used in dual power supply when a power supply failure, will
The load of trouble power is transferred on another power supply, improves power supply reliability.
In a specific embodiment, as shown in figure 3, first kind radial distribution networks network 19 includes third transmission line
191；Second class radial distribution networks network 21 includes the 4th transmission line 211；One end of third transmission line 191 connects the first bus
29, the other end connects interconnection switch 15；One end of third transmission line 211 connects the second bus 31, and the other end connects interconnection switch
15。
Further, in order to convenient for management loop distribution network, first kind radial distribution networks network and the first input
The on-off in portion, the on-off and the first kind of circuit distribution network, the second class radial distribution networks network and the second input unit are radial
The on-off of distribution network, the second class radial distribution networks network and corresponding power load network, in a specific embodiment,
It as described in Figure 4, further include multiple on-off systems 33；One end of circuit distribution network 17, first kind radial distribution networks network 19
One end connects the first input unit 11 by on-off system 33；Circuit distribution network 17 connects power load net by on-off system 33
Network 27；The other end of circuit distribution network 17, the second class radial distribution networks network 21 one end pass through the connection of on-off system 33 the
Two input units 13.In one example, on-off system is switch.
Wherein, any circuit distribution network in normal operating conditions, first kind radial distribution networks network or the second class
Radial distribution networks network gives corresponding power load network power supply.
The application dc distribution network topological structure is the course of work for improving reliability and safety: primary Ioops in office are matched
It is any in normal when preset failure occur in electric network, first kind radial distribution networks network or the second class radial distribution networks network
Circuit distribution network, first kind radial distribution networks network or the second class radial distribution networks network of working condition give corresponding electricity consumption
Laod network power supply.Wherein, corresponding power load network be with there is preset failure circuit distribution network, the first kind radiate
The power load network that shape distribution network or the second class radial distribution networks network are connected.
It is specific as follows: when some circuit, preset failure occurs in distribution network, using normal circuit distribution network
For the power load network power supply being connect with the circuit distribution network for preset failure occur, alternatively, can also be connected by interconnection switch
Lead to any first kind radial distribution networks network and any second class radial distribution networks network, it is radial using the first kind after connection
Distribution network and the second class radial distribution networks network are the power load net connecting with the circuit distribution network for preset failure occur
Network power supply；
When preset failure occurs in some first kind radial distribution networks network, can be connected to by interconnection switch any normal
The second class radial distribution networks network and there is the first kind radial distribution networks network of preset failure, allow normal second class to radiate
Shape distribution network is the power load network power supply connecting with the first kind radial distribution networks network for preset failure occur, alternatively,
It is the use connecting with the first kind radial distribution networks network for preset failure occur that any normal circuit distribution network, which can also be used,
Electric loading network power supply.
The course of work of second class radial distribution networks network is identical as the course of work of first kind radial distribution networks network, this
Place repeats no more.
In each embodiment of the application dc distribution network topological structure, including it is the first input unit, the second input unit, multiple
Circuit distribution network, interconnection switch, multiple first kind radial distribution networks networks and multiple second class radial distribution networks networks；It returns
One end of road distribution network connects the first input unit, the other end connects the second input unit；The one of first kind radial distribution networks network
The first input unit of end connection；One end of second class radial distribution networks network connects the second input unit；First kind radial distribution networks
The other end connection interconnection switch of the other end of network, the second class radial distribution networks network；Wherein, the first input unit is for connecting the
One high voltage power supply；Second input unit is for connecting the second high voltage power supply；Circuit distribution network, first kind radial distribution networks network and
Second class radial distribution networks network is used for corresponding power load network power supply, its working principle is that primary Ioops power distribution network in office
When there is preset failure in network, first kind radial distribution networks network or the second class radial distribution networks network, normal circuit power distribution network
Network, first kind radial distribution networks network or the second class radial distribution networks network give circuit distribution network in preset failure, the
A kind of radial distribution networks network or the power supply of the second class radial distribution networks network, to establish dual power supply multi-layer DC distribution net
Network can quickly cut off the distribution network of failure, and by other normal power distribution networks when any distribution network breaks down
Network provides electric energy for the distribution network to break down, effectively improves the power supply reliability and safety of user.
In one embodiment, as shown in figure 5, further including multiple first kind power generator 35, multiple second classes power generation dress
Set 37 and multiple third class power generator 39；
Each first kind power generator 35 corresponds access circuit distribution network 17；Each second class power generator 37 1 is a pair of
First kind radial distribution networks network 19 should be accessed；Each third class power generator 39 corresponds the second class radial distribution networks of access
Network 21.
It further further include multiple first kind energy storage devices 41, multiple second class energy storage devices 43 and multiple third classes
Energy storage device 45；
Each first kind energy storage device 41 corresponds access circuit distribution network 17；Each second class energy storage device 43 1 is a pair of
First kind radial distribution networks network 19 should be accessed；Each third class energy storage device 45 corresponds the second class radial distribution networks of access
Network 21.
It should be noted that using first kind power generator, the second class power generator and third class power generator first
It is important negative in power load network when power supply trouble or electricity shortage occur in high voltage power supply, the second high voltage power supply
It carries and electric energy is provided.
In a specific embodiment, first kind power generator includes one of following device or any combination:
Device of solar generating, photovoltaic power generation apparatus and generator；
Second class power generator includes one of following device or any combination: device of solar generating, photovoltaic hair
Electric installation and generator；
Third class power generator includes one of following device or any combination: device of solar generating, photovoltaic hair
Electric installation and generator.
First kind energy storage device, multiple second class energy storage devices and multiple third class energy storage devices are in the first high-voltage electricity
Source, the power supply of the second high voltage power supply are charged when normal, power supply trouble or confession occur in the first high voltage power supply, the second high voltage power supply
When electric deficiency, electric energy is discharged for the important load in power load network, electric energy is provided.
In each embodiment of the application dc distribution network topological structure, matched using power generator and energy storage device for direct current
Electric network topological structure provides accessory power supply, to guarantee that power load can obtain urgent confession when normal power supply breaks down
Electricity improves the power supply reliability and safety of dc distribution network topological structure, and then reduces the loss of outage of user.
The power supply mode of the application dc distribution network topological structure in order to facilitate understanding is now specifically answered with the one of the application
It is specific as follows for being illustrated:
As shown in fig. 6, dc distribution network topological structure includes the first inverter, the second inverter, the first circuit distribution
Network, second servo loop distribution network, the first radial distribution networks network, the second radial distribution networks network, interconnection switch, the first mother
Line, the second bus, multiple switch, multiple photovoltaic power generation apparatus and multiple energy storage devices；
First circuit distribution network is connected the second bus by switch, is connected by switch by switch the first bus of connection
Connect corresponding power load network；
First radial distribution networks network connects interconnection switch by switch the first bus of connection；Second radial distribution
Network connects interconnection switch by switch the first bus of connection；
Second servo loop distribution network is connected the second bus by switch, is connected by switch by switch the first bus of connection
Connect corresponding power load network；
First inverter is used for external input (10kV) AC power source by switch the first bus of connection；Second change of current
Device is used for external input (10kV) AC power source by switch the second bus of connection；
Photovoltaic power generation apparatus accordingly accesses the first circuit distribution network, second servo loop distribution network, the first radial distribution
Network, the second radial distribution networks network；
Energy storage device accordingly access the first circuit distribution network, second servo loop distribution network, the first radial distribution networks network,
Second radial distribution networks network；
Second servo loop distribution network, the first radial distribution networks network pass through switch the first bus of connection；First circuit distribution
Network, second servo loop distribution network, the second radial distribution networks network pass through switch the second bus of connection.
It should be noted that as shown, passing through DC/DC converter when distribution network is to power load network power supply
Electric energy is transferred to DC load, AC load is transferred to by DC/AC converter.
The course of work of the present embodiment is specific as follows:
Dc distribution network topological structure obtains the electric energy of AC power source by the first inverter and the conversion of the second inverter,
And pass through the first circuit distribution network, second servo loop distribution network, the first radial distribution networks network, the second radial distribution networks network
Power load network is supplied, exception occurs or electric energy is unable to satisfy user demand when supply occurs in the first radial distribution networks network
When, it is closed interconnection switch and disconnects switch, give the connection of the first radial distribution networks network using the second radial distribution networks network
Power load network power supply, equally, when there is exception in the second radial distribution networks network or electric energy is unable to satisfy user demand,
Take above-mentioned same way；
When exception occurs in the first circuit distribution network or electric energy is unable to satisfy user demand, can be matched by second servo loop
Electric network is the power load network power supply connecting with the first circuit distribution network, can also be by being closed interconnection switch, by the
One radial distribution networks network and the second radial distribution networks network are that the power load network connecting with the first circuit distribution network supplies
Electricity equally when exception occurs in second servo loop distribution network or electric energy is unable to satisfy user demand, is taken and above-mentioned is equally done
Method；
In dc distribution network topological structure AC power source cannot be obtained by the first inverter and the conversion of the second inverter
Electric energy, can disconnect switch S2, disconnect switch S3, disconnect switch S5, disconnect switch S6, disconnection switch S8, disconnection switch S9 are disconnected
Interconnection switch is opened, is power load network power supply by photovoltaic power generation apparatus and energy storage device.
The application dc distribution network topological structure, compared with existing dc distribution network topological structure, the application is established
Multi-layer dc distribution network can quickly cut off failure simultaneously when some distribution network of dc distribution network breaks down
Distribution network by other distribution networks to go wrong provides electric energy, effectively improves the power supply reliability and safety of user
Property, overcome power supply reliability and fault identification and guarantor in the more difficult coordination DC distribution net of existing dc distribution network topological structure
Contradiction both between shield control, while being difficult to meet the growing city of load and the higher user of electricity consumption reliability requirement
Demand the problem of.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The several embodiments of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
The limitation to claim therefore cannot be interpreted as.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the concept of this application, various modifications and improvements can be made, these belong to the protection of the application
Range.Therefore, the scope of protection shall be subject to the appended claims for the application patent.
Claims (10)
1. a kind of dc distribution network topological structure, which is characterized in that including the first input unit, the second input unit, interconnection switch,
Multiple circuit distribution networks, multiple first kind radial distribution networks networks and multiple second class radial distribution networks networks；
One end of the circuit distribution network connects first input unit, the other end connects second input unit；Described
One end of a kind of radial distribution networks network connects first input unit；One end of the second class radial distribution networks network connects
Second input unit；The other end of the first kind radial distribution networks network, the second class radial distribution networks network it is another
One end connects the interconnection switch；
First input unit is for connecting the first high voltage power supply；Second input unit is for connecting the second high voltage power supply；Institute
Circuit distribution network, the first kind radial distribution networks network and the second class radial distribution networks network are stated for corresponding
Power load network power supply；
Wherein, in any circuit distribution network, the first kind radial distribution networks network or second class is radial matches
When preset failure occurs in electric network, any circuit distribution network in normal operating conditions, the first kind are radial
Distribution network or the second class radial distribution networks network give the corresponding power load network power supply.
2. dc distribution network topological structure according to claim 1, which is characterized in that further include multiple first kind power generations
Device, multiple second class power generator and multiple third class power generator；
Each first kind power generator, which corresponds, accesses the circuit distribution network；Each second class power generator is one by one
It is corresponding to access the first kind radial distribution networks network；Each third class power generator, which corresponds, accesses the second class spoke
Penetrate shape distribution network.
3. dc distribution network topological structure according to claim 2, which is characterized in that the first kind power generator packet
Include one of following device or any combination: device of solar generating, photovoltaic power generation apparatus and generator；
The second class power generator includes one of following device or any combination: device of solar generating, photovoltaic hair
Electric installation and generator；
The third class power generator includes one of following device or any combination: device of solar generating, photovoltaic hair
Electric installation and generator.
4. dc distribution network topological structure according to claim 2, which is characterized in that further include multiple first kind energy storage
Device, multiple second class energy storage devices and multiple third class energy storage devices；
Each first kind energy storage device, which corresponds, accesses the circuit distribution network；Each second class energy storage device is one by one
It is corresponding to access the first kind radial distribution networks network；Each third class energy storage device, which corresponds, accesses the second class spoke
Penetrate shape distribution network.
5. dc distribution network topological structure according to claim 4, which is characterized in that further include multiple on-off systems；
One end of the circuit distribution network, the first kind radial distribution networks network one end connected by the on-off system
First input unit；The circuit distribution network connects the power load network by the on-off system；
The other end of the circuit distribution network, the second class radial distribution networks network one end connected by the on-off system
Connect second input unit.
6. dc distribution network topological structure according to claim 5, which is characterized in that the on-off system is switch.
7. dc distribution network topological structure according to any one of claims 1 to 6, which is characterized in that match in the circuit
One end of electric network, the first kind radial distribution networks network one end first input unit is connected by the first bus；
The other end of the circuit distribution network, the second class radial distribution networks network one end by the second bus connect institute
State the second input unit.
8. dc distribution network topological structure according to claim 7, which is characterized in that first input unit is first
Inverter；Second input unit is the second inverter.
9. dc distribution network topological structure according to claim 8, which is characterized in that the circuit distribution network includes
First transmission line and second transmission line；
One end of the first transmission line connects first bus, and the other end is for connecting the power load network；It is described
One end of second transmission line connects second bus, and the other end is for connecting the power load network.
10. dc distribution network topological structure according to claim 9, which is characterized in that the first kind is radial to match
Electric network includes third transmission line；The second class radial distribution networks network includes the 4th transmission line；
One end of the third transmission line connects first bus, and the other end connects the interconnection switch；The third transmission
One end of line connects second bus, and the other end connects the interconnection switch.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106203854A (en) * | 2016-07-13 | 2016-12-07 | 广东工业大学 | A kind of DC distribution net Economic Analysis Method and system |
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Application publication date: 20190517 |