CN205070461U - Family receives little grid system of network system and community's level - Google Patents
Family receives little grid system of network system and community's level Download PDFInfo
- Publication number
- CN205070461U CN205070461U CN201520878391.7U CN201520878391U CN205070461U CN 205070461 U CN205070461 U CN 205070461U CN 201520878391 U CN201520878391 U CN 201520878391U CN 205070461 U CN205070461 U CN 205070461U
- Authority
- CN
- China
- Prior art keywords
- energy
- new forms
- bus
- family
- grid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The application discloses family receives little grid system of network system and community's level, the little grid system of community's level include that a plurality of families receive the network system, and every family receives the network system and includes new forms of energy consumer, new forms of energy power generation system, two -way DCDC and energy storage battery, and the dc bus and the domestic appliance of new forms of energy consumer are connected. But the dc bus direct access new forms of energy power generation system's of new forms of energy consumer direct current electric power driven is traditional, has saved the contravariant process of electric current. Consequently, domestic appliance adopts the dc bus power supply of new forms of energy consumer to supply ferroelectric phase to compare with directly adopting new forms of energy power generation system, can save unsteady flow conversion many times to it rates to have improved energy utilization.
Description
Technical field
The utility model relates to technical field of power systems, in particular, relates to a kind of family and receives net system and community-level micro-grid system.
Background technology
Micro-capacitance sensor refer to by distributed power source, energy storage device, power electronic equipment, load and protective device form can teaching display stand control, protect, manage be small-sizedly transported to electric system.Micro-capacitance sensor can be incorporated into the power networks with bulk power grid, can absorb energy during energy shortage from bulk power grid, can to bulk power grid feedback energy when energy is abundant.When bulk power grid breaks down power-off, micro-capacitance sensor can independent operating, powers to the load continuous in region, thus improves power supply reliability.Wherein, electric energy with form of communication transmit be exchange micro-capacitance sensor, with DC form transmission is direct-current grid.
The structure of existing typical direct-current grid as shown in Figure 1, photovoltaic 01 is connected to DC bus by DC/DC (DC conversion device) 001, wind energy 02 is connected to DC bus by AC/DC (AC-DC converter) 002, energy storage device 03 is connected to DC bus by DC/DC003, then passes through independently AC/DC004 and realizes being connected with bulk power grid 04.This direct-current grid powers to AC load 05 by DC/AC (DC-AC converter) 005, or is powered to DC load 06 by DC/DC006, or powers directly to DC load 07.But, for the household electrical appliance that some directly cannot utilize the DC load of direct-current grid, need deliver through direct current the conversion that stream turns direct current again, namely need additionally to increase inverter.Exchanging micro-capacitance sensor current Application comparison general, when powering for household electrical appliance, need could meet power demands through repeatedly unsteady flow for new forms of energy such as photovoltaics.
In summary it can be seen, new forms of energy need through repeatedly unsteady flow conversion when powering to household electrical appliance, and therefore, electric energy loss is comparatively large, and efficiency of energy utilization is not high.
Utility model content
In view of this, the utility model provides a kind of family to receive net system and community-level micro-grid system, with realize adopting new forms of energy for household electrical appliance power time, improve energy utilization rate.
A kind of family receives net system, comprising:
New forms of energy power consumption equipment, described new forms of energy power consumption equipment has and can be connected with household electrical appliance, and the DC bus can powered for described household electrical appliance;
The grid-connected power generation system be connected with described new forms of energy power consumption equipment;
Two-way DC/DC;
Access described DC bus by described two-way DC/DC, and the energy-storage battery of discharge and recharge can be carried out under the control of described two-way DC/DC.
Preferably, also comprise:
Input is connected with described DC bus, and output is connected with described household electrical appliance, busbar voltage can be transformed into the DC/DC of the electric pressure that directly can be utilized by described household electrical appliance.
Preferably, also comprise:
Charging pile;
By described charging pile incoming transport bus, and the automobile storage battery of discharge and recharge can be carried out under the control of described charging pile.
Preferably, described grid-connected power generation system is connected with described DC bus.
Preferably, described new forms of energy power consumption equipment is PV air-conditioner.
A kind of community-level micro-grid system, comprising: multiple family receives net system, and it is interconnected that each described family receives the DC bus side of new forms of energy power consumption equipment in net system, and AC is interconnected.
As can be seen from above-mentioned technical scheme, the utility model provides a kind of family and receives net system and community-level micro-grid system, community-level micro-grid system comprises multiple family and receives net system, each family receives net system and comprises new forms of energy power consumption equipment, grid-connected power generation system, two-way DC/DC and energy-storage battery, and the DC bus of new forms of energy power consumption equipment is connected with household electrical appliance.The DC bus of new forms of energy power consumption equipment directly can access the direct current energy driving of grid-connected power generation system, more traditional, eliminates the reversals of electric current.Therefore, household electrical appliance adopt compared with the DC bus powered and direct employing grid-connected power generation system of new forms of energy power consumption equipments powers, and can save repeatedly unsteady flow conversion, thus improve energy utilization rate.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiment of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
The structural representation of Fig. 1 a kind of direct-current grid disclosed in prior art embodiment;
Fig. 2 a kind of family disclosed in the utility model embodiment receives the structural representation of net system;
Fig. 3 another kind of family disclosed in the utility model embodiment receives the structural representation of net system;
The structural representation of Fig. 4 a kind of community-level micro-grid system disclosed in the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
The utility model embodiment discloses a kind of family and receives net system and community-level micro-grid system, with realize adopting new forms of energy for household electrical appliance power time, improve energy utilization rate.
See Fig. 2, the utility model embodiment discloses a kind of family and receives the structural representation of net system, comprising:
New forms of energy power consumption equipment 11, grid-connected power generation system 12, two-way DC/DC (i.e. bidirectional, dc convertor assembly) 13 and energy-storage battery 14;
Wherein,
New forms of energy power consumption equipment 11 has and can be connected with household electrical appliance 10, and can be the DC bus that household electrical appliance 10 are powered.
Grid-connected power generation system 12 is connected with new forms of energy power consumption equipment 11, for providing electric energy for described new forms of energy power consumption equipment 11.
It should be noted that, the DC bus of new forms of energy power consumption equipment 11 directly can access the direct current driven of new forms of energy, more traditionally needs through DC-AC-direct current, can save inverter.
Energy-storage battery 14 by two-way DC/DC13 just described DC bus, and can carry out discharge and recharge under the control of two-way DC/DC13.
Wherein, when the electric energy that grid-connected power generation system 12 produces can meet household electrical appliance 10 need for electricity and have surplus, grid-connected power generation system 12 is preferential is that energy-storage battery 14 charges by two-way DC/DC13, connects AC network again after being full of by DC/AC (DC-AC converter) inversion; When the electric energy that grid-connected power generation system 12 produces cannot meet household electrical appliance 10 need for electricity; powered for household electrical appliance 10 by energy-storage battery 14; as the SOC (StateofCharge of energy-storage battery 14; state-of-charge) lower than predetermined threshold value time; for protection energy-storage battery 14 is not impaired, be now that household electrical appliance 10 are powered by AC network.
In summary it can be seen, the DC bus of new forms of energy power consumption equipment 11 directly can access the direct current energy driving of grid-connected power generation system 12, more traditional, eliminates the reversals of electric current.Therefore, household electrical appliance 10 adopt compared with the DC bus powered and direct employing grid-connected power generation system 12 of new forms of energy power consumption equipment 11 powers, and can save repeatedly unsteady flow conversion, thus improve energy utilization rate.
Most of household electrical appliance inside is all DC power supply in the market, the DC bus in the application is adopted to power directly to household electrical appliance 10, the rectification circuit of household electrical appliance 10 inside can be saved, thus while the conversion of minimizing unsteady flow improves energy utilization rate, with regard to household electrical appliance 10 itself, rectification circuit cost can also be saved.
Preferably, new forms of energy power consumption equipment 11 is PV air-conditioner, and grid-connected power generation system 12 is photovoltaic generating system.
Grid-connected power generation system 12 is connected by DC bus with new forms of energy power consumption equipment 11.
It should be noted that, when the electric pressure of DC bus is applicable to household electrical appliance 10, household electrical appliance 10 are directly connected with DC bus; When the electric pressure of DC bus is not suitable for household electrical appliance 10, household electrical appliance 10 are connected with DC bus by DC/DC.
Therefore, for optimizing above-described embodiment further, see Fig. 3, a kind of family disclosed in another embodiment of the utility model receives the structural representation of net system, on basis embodiment illustrated in fig. 1, also comprises: DC/DC15;
The input of DC/DC15 is connected with DC bus, and output is connected with household electrical appliance 10, and busbar voltage can be transformed into the electric pressure that directly can be utilized by household electrical appliance 10 by DC/DC15.
For optimizing above-described embodiment further, also comprise: charging pile 16 and automobile storage battery 17;
Automobile storage battery 17 by charging pile 16 incoming transport bus, and can carry out discharge and recharge under the control of charging pile 16.
Wherein,
Its function class of charging pile 16 is similar to the fuel charger inside gas station, ground or wall can be fixed on, being installed in public building (public building, market, Public Parking etc.) and parking lot, residential quarter or charging station, can be the charging electric vehicle of various model according to different electric pressures.The input of charging pile 16 is directly connected with AC network, and output is all equipped with charging plug for being charging electric vehicle.
Therefore, when the SOC of energy-storage battery 14 is lower than predetermined threshold value, automobile storage battery 17 can be used as supplementing of energy-storage battery 14, continues as household electrical appliance 10 and powers, thus can improve family further and receive the power supply reliability of net system.
It should be noted that, supplementary storage battery comprises list and is not only confined to automobile storage battery 17.
Independently family receives net system and is generally all connected to single energy-storage battery 14, because the capacity of energy-storage battery 14 is less, therefore, cannot meet family and receive the long independent operating of net system.For this shortcoming, the utility model additionally provides a kind of community-level micro-grid system.
See Fig. 4, a kind of structural representation of community-level micro-grid system disclosed in the utility model embodiment, comprise: multiple family receives net system and (only illustrates two in Fig. 3, be respectively family to receive net system 31 and family and receive net system 32), it is interconnected that each family receives the DC bus side of new forms of energy power consumption equipment in net system, and AC is interconnected.
Can find out, the community-level micro-grid system that the utility model provides is by receiving net system interconnect by multiple family, form a distributed energy storing structure, each energy-storage battery 14 supplements mutually, increase the energy storage gross energy of community-level micro-grid system, thus to ensure in community-level micro-capacitance sensor that important load can independent operating for a long time.
By multiple family being received, the DC bus side of new forms of energy power consumption equipment in net system is interconnected, AC is interconnected, form an alternating current-direct current dual network mixing micro-grid system, owing to there being the such as electric rotating machine class load of minority electrical equipment to be Alternating Current Power Supply in household electrical appliance 10, therefore, AC network can supplementing as DC network, thus improve the reliability that whole micro-grid system powers.
It should be noted that, for improving the economy of micro-grid system overall operation, the energy-storage battery 14 of a large amount of dispersion is preferably nearby for household electrical appliance are powered.
Finally, also it should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (6)
1. family receives a net system, it is characterized in that, comprising:
New forms of energy power consumption equipment, described new forms of energy power consumption equipment has and can be connected with household electrical appliance, and the DC bus can powered for described household electrical appliance;
The grid-connected power generation system be connected with described new forms of energy power consumption equipment;
Two-way DC/DC;
Access described DC bus by described two-way DC/DC, and the energy-storage battery of discharge and recharge can be carried out under the control of described two-way DC/DC.
2. family according to claim 1 receives net system, it is characterized in that, also comprises:
Input is connected with described DC bus, and output is connected with described household electrical appliance, busbar voltage can be transformed into the DC/DC of the electric pressure that directly can be utilized by described household electrical appliance.
3. family according to claim 1 receives net system, it is characterized in that, also comprises:
Charging pile;
By described charging pile incoming transport bus, and the automobile storage battery of discharge and recharge can be carried out under the control of described charging pile.
4. family according to claim 1 receives net system, and it is characterized in that, described grid-connected power generation system is connected with described DC bus.
5. family according to claim 1 receives net system, and it is characterized in that, described new forms of energy power consumption equipment is PV air-conditioner.
6. a community-level micro-grid system, is characterized in that, comprising: multiple family receives net system, and it is interconnected that each described family receives the DC bus side of new forms of energy power consumption equipment in net system, and AC is interconnected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520878391.7U CN205070461U (en) | 2015-11-04 | 2015-11-04 | Family receives little grid system of network system and community's level |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520878391.7U CN205070461U (en) | 2015-11-04 | 2015-11-04 | Family receives little grid system of network system and community's level |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205070461U true CN205070461U (en) | 2016-03-02 |
Family
ID=55396968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520878391.7U Active CN205070461U (en) | 2015-11-04 | 2015-11-04 | Family receives little grid system of network system and community's level |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205070461U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105262134A (en) * | 2015-11-04 | 2016-01-20 | 珠海格力电器股份有限公司 | Household nano-network system and community-level microgrid system |
-
2015
- 2015-11-04 CN CN201520878391.7U patent/CN205070461U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105262134A (en) * | 2015-11-04 | 2016-01-20 | 珠海格力电器股份有限公司 | Household nano-network system and community-level microgrid system |
| WO2017076192A1 (en) * | 2015-11-04 | 2017-05-11 | 珠海格力电器股份有限公司 | Home nano-network system and community-level microgrid system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105262134A (en) | Household nano-network system and community-level microgrid system | |
| CN103178553B (en) | A kind of family expenses mixed power supply system | |
| CN108407625B (en) | Bidirectional charging and discharging system for new energy automobile | |
| CN103208826B (en) | Container moving type photovoltaic energy storage charging station | |
| CN204243874U (en) | A kind of data center high-voltage direct current (DC) power system | |
| CN103545907B (en) | Office photovoltaic DC power-supply system and control method | |
| CN203761319U (en) | Comprehensive type distributed photovoltaic energy storage system | |
| CN105811458A (en) | Microgrid energy storage system and energy management method thereof | |
| CN202712876U (en) | Solar photovoltaic microgrid grid-connected power generation system | |
| CN105552878A (en) | DC microgrid structure | |
| CN105471075A (en) | Photovoltaic charging unit of electric vehicle | |
| CN112793450A (en) | Can return to accuse electricity intelligent charging stake | |
| CN104795881A (en) | Wind-light complementary power supply controller, microgrid system and microgrid system power supply method | |
| CN104682533A (en) | Double-bus direct current ultra-micro grid system suitable for sustainable building | |
| CN205544533U (en) | Photovoltaic charging unit of electric vehicle | |
| CN204205617U (en) | A kind of power conversion is generated electricity by way of merging two or more grid systems electric power system | |
| CN102208825B (en) | Solar photovoltaic power generation system with energy networking function | |
| CN205070461U (en) | Family receives little grid system of network system and community's level | |
| CN103560537A (en) | Area distribution photovoltaic power supply grid-connected system and control method of area distribution photovoltaic power supply grid-connected system | |
| CN203536974U (en) | Local distributed grid-connected photovoltaic power supply system | |
| CN202997587U (en) | Intelligent micro-network distributed power supply | |
| CN203151120U (en) | Household hybrid power supply system | |
| CN105515154A (en) | Off-grid/grid-connected household energy storage system | |
| CN202076961U (en) | Solar photovoltaic power system with energy networking function | |
| CN204559220U (en) | Wind light mutual complementing power-supply controller and micro-grid system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |