CN204230893U - A kind of high reliability DC distribution net being applicable to electric automobile and registering one's residence - Google Patents
A kind of high reliability DC distribution net being applicable to electric automobile and registering one's residence Download PDFInfo
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- CN204230893U CN204230893U CN201420784291.3U CN201420784291U CN204230893U CN 204230893 U CN204230893 U CN 204230893U CN 201420784291 U CN201420784291 U CN 201420784291U CN 204230893 U CN204230893 U CN 204230893U
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Abstract
A kind of high reliability DC distribution net being applicable to electric automobile and registering one's residence, comprise a current conversion station containing AC/DC current transformer, a community distribution box containing DC/DC current transformer, at least one circuit breaker/switch, at least one comprises resident's change of current case of DC/AC current transformer and two-way DC/DC current transformer, at least one traditional load, at least one electric automobile charging pile.With existing registering one's residence for electric automobile, power distribution network is carried out compared with the scheme of dilatation, in the utility model, suggest plans is not changing first wife's power network line structure and is not affecting customer charge electricity consumption, and when without the need to replacing or upgrading cable, Jin Dui community distribution box is transformed, circuit breaker/switch and resident's change of current case are installed additional to resident, the power transmission capacity of pow of power distribution network can be promoted, and ensure that system has higher reliability, there is the advantages such as cost is low, quantities is little, reliability is high, extensibility is good.
Description
Technical field
The utility model belongs to power distribution network transmitted power capacity increasing technique field, is specifically related to a kind of high reliability DC distribution net being applicable to electric automobile and registering one's residence.
Background technology
Along with the aggravation of the global problems such as energy crisis, greenhouse effect, air pollution, the electric automobile of replacing oil by electricity is energy-conservation as a new generation to be subject to the whole world with the vehicles of environmental protection and to pay close attention to, and the universal of electric automobile is trend of the times.In electric vehicle industrialization evolution, except the technical bottleneck of itself, urgently to be resolved hurrily is power distribution network dilatation problem.Existing AC distribution web frame schematic diagram is as shown in the Fig. 1 in Figure of description, when the extensive Stochastic accessing of electric automobile, not only large to the demand of electric automobile charging pile, and larger load impact can be formed to exchanging distribution, cause the significantly lifting of distribution network load, obviously, existing AC distribution net capacity of trunk be difficult to meet electric automobile register one's residence on a large scale after capacity of trunk demand, registering one's residence to the demand of power distribution network capacity to adapt to high permeability electric automobile, must take measures to carry out dilatation to power distribution network.At present, solution for power distribution network dilatation problem mainly contains two kinds: the first is to the direct upgrading of power distribution network Central Plains power transmission cable, former power transmission cable is replaced by the larger cable of conveyance capacity, this scheme can according to workload demand significantly dilatation, but quantities is huge, long in time limit, cost intensive, consumptive material waste is serious, and serious on resident living impact during power transmission cable upgrading; The second is when not changing first wife's grid power transmission line construction, adopt power transmission line dynamic capacity increase technology, the program has the advantage not changing transmission line structure, but need extra increasing to detect in a large number and communication equipment, and the actual increasable transmission capacity of transmission line is subject to natural environment influence, therefore the normal technology of dynamic compatibilization is often applied in ultra-high-tension power transmission line, considers the factor such as cost, maximum delivery capacity increasing degree and be difficult to application in low-voltage network.
Summary of the invention
For prior art above shortcomings, improve that scheme exists that cost is high, quantities is large for solving existing power distribution network transmission line capability, that long construction period, transmission line capability promote amplitude is little and to problems such as customer impact are serious, the utility model proposes a kind of high reliability DC distribution net being applicable to electric automobile and registering one's residence, improve transmission line capability and there is higher reliability, for tackle large-scale electric automobile register one's residence after the increase of power distribution network peak load.And ensure that system has higher reliability, there is the advantages such as cost is low, quantities is little, reliability is high, extensibility is good.
The technical scheme that the utility model is taked is:
Be applicable to the high reliability DC distribution net that electric automobile is registered one's residence,
A current conversion station containing AC/DC current transformer,
A community distribution box containing DC/DC current transformer,
At least one switch member,
At least one resident's change of current case,
At least one resident's tradition load,
At least one electric automobile charging pile;
The described current conversion station AC containing AC/DC current transformer is connected with external communication network, and the DC side of current conversion station is connected with community distribution box;
The described community distribution box terminal voltage upper side containing DC/DC current transformer is connected with current conversion station, and terminal voltage comparatively downside is connected with each resident's branch road;
Described switch member is installed in each resident's branch road, and one end of switch member is connected with community distribution box, and the other end is connected with resident's change of current case;
Comprise DC/AC current transformer and two-way DC/DC current transformer in described resident's change of current case, wherein the DC side of DC/AC current transformer is connected with switch member, and AC is connected with resident's tradition load; The terminal voltage upper side of two-way DC/DC current transformer is connected with switch member, and terminal voltage comparatively downside is connected with electric automobile charging pile;
Described resident's tradition load is connected with the DC/AC AC side of converter in resident's change of current case; Described electric automobile charging pile and the two-way DC/DC current transformer terminal voltage in resident's change of current case comparatively downside are connected.
Described switch member is installed on each resident's branch road.
Described switch member is circuit breaker or air switch.
Each resident all installs resident's change of current case 4, and resident's change of current case 4 all leaves electric automobile charging pile interface.
Compared to the technology of existing raising distribution network line transmission line capability, the utility model tool has the following advantages:
1), the utility model without the need to changing first wife's power network line structure, and without the need to the cable changed or existing power distribution network of upgrading uses, has the advantage that quantities is little, realization is convenient, little to customer impact.
2), the lifting amplitude of the utility model transmission line capacity can be regulated by the amplitude of power distribution network AC line voltage, the demand to distribution line capacity after registering one's residence with the electric automobile meeting different scales, and flexible design is applied widely, highly versatile.
3) the DC/DC current transformer, in the utility model in resident's change of current case adopts bi-directional configuration, has that electric energy is in emergency circumstances counter send function, can ensure the power quality of resident.
4), the utility model is equiped with circuit breaker/switch in each resident's branch road, when power distribution network breaks down, by control circuit breaker/switch, in time non-faulting in faulty section and distribution is separated from, reduce faulty section to the impact of power distribution network, distribution network reliability is higher.
5) the resident's change of current case, in the utility model all leaves electric automobile charging pile interface, can guarantee that user can be charging electric vehicle easily and flexibly after adding electric automobile, be highly suitable for the situation that electric automobile is registered one's residence.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of existing alternating-current system.
Fig. 2 is the structural representation that the utility model is applicable to the high reliability DC distribution net embodiment that electric automobile is registered one's residence.
Embodiment
As shown in Figure 2, a kind of high reliability DC distribution net being applicable to electric automobile and registering one's residence, comprise: a current conversion station 1 containing AC/DC current transformer, a community distribution box 2 containing DC/DC current transformer, at least one switch member 3, switch member 3 is circuit breaker or air switch, and at least one comprises resident's change of current case 4 of DC/AC current transformer 5 and two-way DC/DC current transformer 6, at least one resident's tradition load 7, at least one electric automobile charging pile 8; Described current conversion station 1 AC containing AC/DC current transformer is connected with external communication network, and DC side is connected with community distribution box 2; The described community distribution box 2 terminal voltage upper side containing DC/DC current transformer is connected with current conversion station 1, and (electric pressure is by the impact of first wife's power grid cables herein, for 11kV AC distribution net cable, direct voltage can be operated in 30kV), terminal voltage comparatively downside is connected (electric pressure is subject to the impact of inverter and transmission line capability, can be arranged on about 800V) herein with each resident's branch road; Described switch member 3 is installed in each resident's branch road, and one end of switch member 3 is connected with community distribution box 2, and the other end is connected with resident's change of current case 4; DC/AC current transformer 5 and two-way DC/DC current transformer 6 is comprised in described resident's change of current case 4, wherein the DC side of DC/AC current transformer 5 is connected with switch member, AC is connected with resident's tradition load 7, the terminal voltage upper side of two-way DC/DC current transformer 6 is connected with switch member, and (electric pressure is by the impact of inverter and transmission line capability herein, about 800V can be arranged on), terminal voltage comparatively downside is connected (be electric automobile charging pile voltage, Typical ranges is 200-450V) herein with electric automobile charging pile 8; Described resident's tradition load 7 is connected with DC/AC current transformer 5 AC in resident's change of current case 4; Described electric automobile charging pile 8 and two-way DC/DC current transformer 6 terminal voltage in resident's change of current case 4 comparatively downside are connected.
Consider the cable of same insulation thickness and core section, the ability of the energy force rate tolerance alternating voltage of its tolerance direct voltage is about high more than 3 times, the distribution line of the existing alternating-current system shown in Fig. 1, busbar voltage is 10kV, therefore when not changing the line construction of alternating-current system shown in Fig. 1, DC power distribution line voltage shown in Fig. 2 can reach more than 30kV (present Urban Medium Voltage Distribution Network majority adopts cable, provides feasibility to suggested plans enforcement).Further consider that relation between ac transmission voltage peak and effective value and transmission line power factor are on the impact of actual fed capacity, under the prerequisite not changing the existing AC distribution net cable shown in Fig. 1, DC distribution form shown in sample graph 2, the transmission line capability of distribution line can improve about 4.7 times in theory (herein because considering the concrete connected mode of wire, 10kV is generally 3 distribution wires, set bipolar supply power mode herein, namely two busbar voltages are respectively a positive and negative 30kV and ground wire, and so reality can improve capacity is exactly about 4.7 times).In embodiment illustrated in fig. 2, the AC rectification of 110kV is become the direct current of positive and negative 30kV by current conversion station 1, and electric energy is delivered to community distribution box 2 with the form of direct current by distribution line; The direct voltage of positive and negative 30kV is down to positive and negative 800V by the DC/DC current transformer in community distribution box 2, delivers in each resident's branch road; Each resident's branch road installing switch member, when distribution network system breaks down, circuit breaker/switch plays the effect in isolated fault district and non-faulting district, and reducing fault affects the user power utilization of power distribution network; DC/AC current transformer 5 in resident's change of current case 4 by the DC inverter of positive and negative 800V be 220V alternating current for resident tradition load 7, the DC power conversion of positive and negative 800V is that the powered by direct current electrical automobile charging pile 8 of 400V uses by two-way DC/DC current transformer 6.
As shown in Figure 2, all install two-way DC/DC current transformer 6 in resident's change of current case 4, whether two-way DC/DC current transformer 6 whether connecting electric automobile charging pile load, can use electric automobile concrete condition according to resident and determine.According to the difference of electric network state, distribution network system mode of operation of the present utility model has following 3 kinds:
When 1, normally running: the alternating current of external communication network through current conversion station 1 rectification be direct current, in power distribution network, electric energy is supplied load 7,8 by transmission line and convertor assembly 2,5,6 again, and now electric automobile charging pile absorbs and store electrical energy as load from power distribution network.
2, when power distribution network electric power system breaks down: the switch member of each resident's branch road disconnects all immediately, the two-way DC/DC current transformer 6 of the electric automobile charging pile 8 of each resident in resident's change of current case 4 is to the anti-power transmission energy of traditional load 7 simultaneously, guarantees that resident's tradition load 7 can not keep normal operating conditions by fault effects; When Failure elimination, distribution network restoration normally works, and the electric energy of power distribution network is provided by external network, and now electric automobile charging pile 8 is dissolved and storing electrical energy.
3, when in power distribution network, certain resident's branch road breaks down: the switch member of open failure place branch road immediately, is separated fault branch with distribution, other non-faulting resident branch road does not then keep normal operating conditions by fault branch affects; After the failture evacuation of fault branch, then by this branch road access distribution network system.
In the utility model specific embodiment shown in Fig. 2, DC/AC current transformer 5 in the DC/DC current transformer that the AC/DC current transformer that current conversion station 1 comprises, community distribution box 2 comprise, resident's change of current case 4 and the electric pressure of two-way DC/DC current transformer 6 all carry out designing and setting forth with an example, can select according to real system capacity requirement and determine electric pressure in actual applications.
Direct-flow distribution system of the present utility model is not changing first wife's power network line structure and is not affecting the electricity consumption of aborigines' load, and when without the need to replacing or upgrading cable, Jin Dui community distribution box is transformed, circuit breaker/switch and resident's change of current case is installed additional in each resident's branch road, just can promote power transmission capacity of pow and the system reliability of power distribution network, there is the advantage that distribution line loss is little, quantities is little, extensibility is good, reliability is high.In sum, the utility model is that a kind of reliability is higher and be highly suitable for the DC distribution net that electric automobile registers one's residence.
Above-mentioned enforcement example of the present utility model is only for the utility model example is described, and is not the restriction to execution mode of the present utility model.For those of ordinary skill in the field, other multi-form change and variations can also be made on the basis of the above description.Here cannot give exhaustive to all execution modes.Every belong to the technical solution of the utility model the apparent change of amplifying out or variation be still in the row of protection range of the present utility model.
Claims (3)
1. be applicable to the high reliability DC distribution net that electric automobile is registered one's residence,
A current conversion station (1) containing AC/DC current transformer,
A community distribution box (2) containing DC/DC current transformer,
At least one switch member (3),
At least one resident's change of current case (4),
At least one resident's tradition load (7),
At least one electric automobile charging pile (8); It is characterized in that,
Described current conversion station (1) AC containing AC/DC current transformer is connected with external communication network, and the DC side of current conversion station (1) is connected with community distribution box (2);
Described community distribution box (2) the terminal voltage upper side containing DC/DC current transformer is connected with current conversion station (1), and terminal voltage comparatively downside is connected with each resident's branch road;
Described switch member (3) is installed in each resident's branch road, and one end of switch member (3) is connected with community distribution box (2), and the other end is connected with resident's change of current case (4);
Comprise DC/AC current transformer (5) and two-way DC/DC current transformer (6) in described resident's change of current case (4), wherein the DC side of DC/AC current transformer (5) is connected with switch member (3), and AC is connected with resident's tradition load (7); The terminal voltage upper side of two-way DC/DC current transformer (6) is connected with switch member (3), and terminal voltage comparatively downside is connected with electric automobile charging pile (8);
Described resident's tradition load (7) is connected with DC/AC current transformer (5) AC in resident's change of current case (4); Described electric automobile charging pile (8) and two-way DC/DC current transformer (6) terminal voltage in resident's change of current case (4) comparatively downside are connected.
2. a kind of high reliability DC distribution net being applicable to electric automobile and registering one's residence according to claim 1, it is characterized in that, described switch member (3) is installed on each resident's branch road.
3. a kind of high reliability DC distribution net being applicable to electric automobile and registering one's residence according to claim 1 or 2, it is characterized in that, described switch member (3) is circuit breaker or air switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420784291.3U CN204230893U (en) | 2014-12-11 | 2014-12-11 | A kind of high reliability DC distribution net being applicable to electric automobile and registering one's residence |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420784291.3U CN204230893U (en) | 2014-12-11 | 2014-12-11 | A kind of high reliability DC distribution net being applicable to electric automobile and registering one's residence |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204230893U true CN204230893U (en) | 2015-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420784291.3U Expired - Fee Related CN204230893U (en) | 2014-12-11 | 2014-12-11 | A kind of high reliability DC distribution net being applicable to electric automobile and registering one's residence |
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| Country | Link |
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| CN (1) | CN204230893U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110365073A (en) * | 2019-07-02 | 2019-10-22 | 广州灿明都科技有限责任公司 | A kind of control method for the charging circuit topology may gradually increase charging pile |
| US20220116075A1 (en) * | 2020-10-08 | 2022-04-14 | Melexis Technologies Nv | Transmitter for power line communication |
-
2014
- 2014-12-11 CN CN201420784291.3U patent/CN204230893U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110365073A (en) * | 2019-07-02 | 2019-10-22 | 广州灿明都科技有限责任公司 | A kind of control method for the charging circuit topology may gradually increase charging pile |
| CN110365073B (en) * | 2019-07-02 | 2023-10-27 | 广州灿明都科技有限责任公司 | Control method capable of gradually increasing charging circuit topology structure of charging pile |
| US20220116075A1 (en) * | 2020-10-08 | 2022-04-14 | Melexis Technologies Nv | Transmitter for power line communication |
| US11552677B2 (en) * | 2020-10-08 | 2023-01-10 | Melexis Technologies Nv | Transmitter for power line communication |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150325 Termination date: 20151211 |
|
| EXPY | Termination of patent right or utility model |