CN204230936U - A kind of high reliability DC distribution net containing electric automobile charging pile - Google Patents
A kind of high reliability DC distribution net containing electric automobile charging pile Download PDFInfo
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- CN204230936U CN204230936U CN201420779103.8U CN201420779103U CN204230936U CN 204230936 U CN204230936 U CN 204230936U CN 201420779103 U CN201420779103 U CN 201420779103U CN 204230936 U CN204230936 U CN 204230936U
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Abstract
A kind of high reliability direct-flow distribution system containing electric automobile charging pile, comprise a current conversion station containing AC/DC current transformer, a community distribution box comprising DC/DC current transformer, a DC circuit breaker, 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 resident's tradition load, at least one electric automobile charging pile.With existing for containing electric automobile charging pile power distribution network dilatation scheme compared with, the utility model does not change first wife's power network line structure, and without the need to changing or upgrading cable, when not affecting the electricity consumption of aborigines' load, Jin Dui community distribution box is transformed, in resident family, install resident's change of current case, the power transmission capacity of pow of power distribution network can be promoted, there is the advantages such as cost is low, quantities is little, 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 containing electric automobile charging pile.
Background technology
In recent years; under the situation of the aggravation of the global problems such as energy crisis, greenhouse effect, air pollution, electric automobile receives much concern with its energy-saving and emission-reduction, containment climate warming and the minimizing mankind to the advantage of the aspects such as non-renewable fossil energy dependence and is rapidly developed.In Development of Electric Vehicles process, problem demanding prompt solution is the construction of charging pile and the increase-volume of power distribution network.Existing AC distribution web frame schematic diagram is as shown in the Fig. 1 in Figure of description, when electric automobile accesses on a large scale, not only electric automobile charging pile demand is large, and a large amount of accesses of this DC load of electric automobile will certainly cause the significantly lifting of distribution network load, this proposes requirements at the higher level to distribution line capacity.For the needs of problems of electric automobile to charge position, existing scheme concentrates to build charging station or charging pile, the program can meet a small amount of charging electric vehicle locational requirement, but when electric automobile permeability is more and more higher, must increase to built charging station or charging pile, and Charge Management is difficult, it is dynamic that user also more accurately must control charging station, can be charged fast after arriving at a station to ensure to drive.For the increase-volume problem of power distribution network, current solution has two kinds, one is to the direct upgrading of former power transmission cable, former cable is replaced by the larger cable of conveyance capacity, the method quantities is huge, long in time limit, cost intensive, consumptive material waste is serious, and serious on resident living impact, and two is adopt power transmission line dynamic capacity increase technology, the program does not change former line cord, but a large amount of detection and communication equipment need be set up, and increase-volume amplitude is little, still difficult meet electric automobile permeability larger time demand to capacity of trunk.
Summary of the invention
For prior art above shortcomings, to look for and that existing power distribution network increase-volume scheme cost is high, quantities large, long construction period, transmission line capability promote amplitude is little and to problems such as customer impact are serious for solving charging electric vehicle position difficulty.The utility model provides a kind of high reliability DC distribution net containing electric automobile charging pile, for guaranteeing that charging electric vehicle is convenient, flexible and tackling the increase that extensive electric automobile accesses rear power distribution network peak load.Do not change first wife's power network line structure, and without the need to changing or upgrading cable, when not affecting the electricity consumption of aborigines' load, Jin Dui community distribution box is transformed, resident's change of current case is installed in resident family, the power transmission capacity of pow of power distribution network can be promoted, there is the advantages such as cost is low, quantities is little, extensibility is good.
The technical scheme that the utility model is taked is:
A kind of high reliability DC distribution net containing electric automobile charging pile, comprise a current conversion station containing AC/DC current transformer, a community distribution box comprising DC/DC current transformer, a DC circuit breaker, at least one resident's change of current case, at least one resident's tradition load, at least one electric automobile charging pile; The AC of the described current conversion station containing AC/DC current transformer is connected with external communication network, and DC side is connected with community distribution box; The described community distribution box terminal voltage upper side containing DC/DC current transformer is connected with described current conversion station, and terminal voltage comparatively downside is connected with DC circuit breaker; Described DC circuit breaker is arranged on distribution box outlet, community, and DC circuit breaker one end is connected with community distribution box, and the DC circuit breaker other end is connected with resident's change of current case; DC/AC current transformer and two-way DC/DC current transformer is comprised in described resident's change of current case, wherein the DC side of DC/AC current transformer is connected with DC circuit breaker, the AC of DC/AC current transformer is connected with resident's tradition load, and the terminal voltage upper side of two-way DC/DC current transformer is connected with DC circuit breaker, the terminal voltage of two-way DC/DC current transformer comparatively downside is connected with electric automobile charging pile; Described resident's tradition load is connected with the AC of the DC/AC current transformer in resident's change of current case;
The terminal voltage of described electric automobile charging pile and the two-way DC/DC current transformer in resident's change of current case comparatively downside is connected.
In this DC distribution net, delivery of electrical energy is direct current energy form.
DC/DC current transformer in described resident's change of current case is two-way, and electric automobile charging pile can give other load in power distribution network by the anti-power transmission of two-way DC/DC current transformer in resident's change of current case.
A DC circuit breaker is installed, to ensure residential electricity consumption quality and to improve DC distribution net reliability between community distribution box and resident.
All leave electric automobile charging pile interface in resident's change of current case of each household resident, resident just can complete the charging of electric automobile at oneself, convenient, flexible.
A kind of high reliability DC distribution net containing electric automobile charging pile of the utility model, technique effect is as follows:
1), the utility model without the need to changing first wife's power network line structure, and without the need to changing or the cable that uses of existing power distribution network of upgrading.
2), the lifting amplitude of transmission line capacity of the present utility model, can be regulated by the amplitude of power distribution network AC line voltage, with the demand to distribution line capacity after the access of the electric automobile of satisfied different permeability.
3), the utility model only needs to change the structure of transformer station in existing distribution system and community distribution box, installs a DC circuit breaker additional, and in resident family, installs resident's change of current case.First former transformer station is changed into AC/DC rotary substation, for DC distribution net provides the direct current of appropriate voltage level (the AC distribution cable of such as 11kV can bear the direct current up to 30kV), then community distribution box is transformed, use the transformer in DC/DC convertor assembly replacement first wife electronic box, the direct voltage of power distribution network is converted to inverter can (electric pressure be by the impact of inverter and transmission line capability with being applicable to electric automobile charging pile the electric pressure that inputs herein by DC/DC convertor assembly, about 800V can be arranged on), secondly residential electricity consumption case is added in user side, for regular alternating current load and electric automobile charging pile are powered.Finally install DC circuit breaker additional at community distribution box outlet side.The visible scope that need transform is little, and the resident's change of current case need installed in resident family has the advantages that electric pressure is low, volume is little, price is low, reliability is high, therefore, the enforcement that the utility model is suggested plans have quantities little, realize convenient, feasibility high.
4), in resident's change of current case of the present utility model, two-way DC/DC current transformer has that electric energy is counter send function, when supplying power allocation breaks down, to the anti-energy that send of resident load to tackle emergency, can improve the reliability of system and the power supply quality of resident.
5), all leave electric automobile charging pile interface in resident's change of current case of the present utility model, not only guarantee that existing electric automobile user can convenient, flexiblely charge, the charging electric vehicle demand of different permeability can also be adapted to.
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 contains the high reliability DC distribution net embodiment of electric automobile charging pile.
Embodiment
As shown in Figure 2, a kind of high reliability DC distribution net containing electric automobile charging pile, comprise: a current conversion station 1 containing AC/DC current transformer, a community distribution box 2 comprising DC/DC current transformer, a DC circuit breaker 3, 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.The AC of the described current conversion station 1 containing AC/DC current transformer is connected with external communication network, and DC side is connected with community distribution box 2.The terminal voltage upper side of the described community distribution box 2 containing DC/DC current transformer is connected with current conversion station 1, and terminal voltage comparatively downside is connected with DC circuit breaker 3.Described DC circuit breaker 3 is arranged on community distribution box 2 outlet, and one end 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 resident's change of current case 4 in described community, wherein the DC side of DC/AC current transformer 5 is connected with DC circuit breaker 3, AC is connected with resident's tradition load 7, and the terminal voltage upper side of two-way DC/DC current transformer 6 is connected with DC circuit breaker 3, terminal voltage comparatively downside is connected with electric automobile charging pile 8.Described resident's tradition load 7 is connected with the AC of DC/AC current transformer 5 in resident's change of current case 4.The terminal voltage of described electric automobile charging pile 8 and two-way DC/DC current transformer 6 in resident's change of current case 4 comparatively downside is 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 resident's change of current case 4 through DC circuit breaker 3; The DC inverter of positive and negative 800V is that the alternating current of 220V is for resident's tradition load 7 by the DC/AC current transformer 5 in resident's change of current case 4; 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 the two-way DC/DC current transformer 6 in resident's change of current case 4.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.
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, 2 kinds of operating states can be divided into:
1, when electrical network normally runs: DC circuit breaker does not work, needed for tradition load 7 and electric automobile charging pile 8, the external network that connect by power distribution network of electric energy is through distribution line transmission supply, and now electric automobile charging pile 8 absorbs and store electrical energy from power distribution network as load.
2, during grid collapses: DC circuit breaker disconnects, isolated fault district and non-faulting district, simultaneously stored in the electric automobile charging pile 8 two-way DC/DC current transformer 6 of energy in resident's change of current case 4 is counter gives traditional load 1, to tackle the need for electricity of fault in emergency circumstances traditional load 1, now electric automobile charging pile 8 as power supply by its Power supply tradition load 1.
In sum, the high reliability DC distribution net containing electric automobile charging pile that the utility model is carried, when not changing former AC distribution netting twine line structure and do not change upgrading cable, effectively improving the power transmission capacity of pow of power distribution network, is the direct-flow distribution system that a kind of distribution line loss is little, quantities is little, extensibility good, exploitativeness is strong, reliability is high.In addition, what the utility model was carried contains in the high reliability DC distribution net of electric automobile charging pile, community distribution box 2 outlet installing DC circuit breaker 3 and resident's change of current case 4 in two-way DC/DC converter 6 cooperative cooperating, impact on residential electricity consumption when the electric power system reducing power distribution network breaks down, has the advantage that reliability is high.
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 (2)
1. containing a high reliability DC distribution net for electric automobile charging pile,
Comprise a current conversion station (1) containing AC/DC current transformer,
A community distribution box (2) comprising DC/DC current transformer,
A DC circuit breaker (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,
The AC of the described current conversion station (1) containing AC/DC current transformer is connected with external communication network, and DC side 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 described current conversion station (1), and terminal voltage comparatively downside is connected with DC circuit breaker (3);
Described DC circuit breaker (3) is arranged on community distribution box (2) outlet, and DC circuit breaker (3) one end is connected with community distribution box (2), and DC circuit breaker (3) 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 DC circuit breaker (3), the AC of DC/AC current transformer (5) is connected with resident's tradition load (7), and the terminal voltage upper side of two-way DC/DC current transformer (6) is connected with DC circuit breaker (3), the terminal voltage of two-way DC/DC current transformer (6) comparatively downside is connected with electric automobile charging pile (8);
Described resident's tradition load (7) is connected with the AC of the DC/AC current transformer (5) in resident's change of current case (4);
The terminal voltage of described electric automobile charging pile (8) and the two-way DC/DC current transformer (6) in resident's change of current case (4) comparatively downside is connected.
2. a kind of high reliability DC distribution net containing electric automobile charging pile according to claim 1, it is characterized in that, described electric automobile charging pile (8) can give other load in power distribution network by the anti-power transmission of two-way DC/DC current transformer (6) in resident's change of current case (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420779103.8U CN204230936U (en) | 2014-12-11 | 2014-12-11 | A kind of high reliability DC distribution net containing electric automobile charging pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420779103.8U CN204230936U (en) | 2014-12-11 | 2014-12-11 | A kind of high reliability DC distribution net containing electric automobile charging pile |
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| Publication Number | Publication Date |
|---|---|
| CN204230936U true CN204230936U (en) | 2015-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420779103.8U Expired - Fee Related CN204230936U (en) | 2014-12-11 | 2014-12-11 | A kind of high reliability DC distribution net containing electric automobile charging pile |
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| CN (1) | CN204230936U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105197023A (en) * | 2015-10-15 | 2015-12-30 | 珠海格力电器股份有限公司 | Train power supply system, train air-conditioning system using same and control method of train air conditioning |
| US20220116075A1 (en) * | 2020-10-08 | 2022-04-14 | Melexis Technologies Nv | Transmitter for power line communication |
-
2014
- 2014-12-11 CN CN201420779103.8U patent/CN204230936U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105197023A (en) * | 2015-10-15 | 2015-12-30 | 珠海格力电器股份有限公司 | Train power supply system, train air-conditioning system using same and control method of train air conditioning |
| CN105197023B (en) * | 2015-10-15 | 2018-06-22 | 珠海格力电器股份有限公司 | A kind of control method of train air-conditioning |
| 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 |
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| EXPY | Termination of patent right or utility model |