CN202586367U - Photovoltaic power generation energy storage system - Google Patents

Photovoltaic power generation energy storage system Download PDF

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CN202586367U
CN202586367U CN2012202750598U CN201220275059U CN202586367U CN 202586367 U CN202586367 U CN 202586367U CN 2012202750598 U CN2012202750598 U CN 2012202750598U CN 201220275059 U CN201220275059 U CN 201220275059U CN 202586367 U CN202586367 U CN 202586367U
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module
photovoltaic
power
energy
switch
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肖连生
张长恩
肖南
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/56—Power conversion systems, e.g. maximum power point trackers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E70/00—Other energy conversion or management systems reducing GHG emissions
    • Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin

Abstract

The utility model discloses a photovoltaic power generation energy storage system, which comprises a solar photovoltaic system, a system controller, a storage battery pack and a detection circuit, and is characterized by also comprising a grid-connected inversion module, a rectification charging module, a charging and discharging control module, an inversion module and a switching device, wherein the solar photovoltaic system is connected with a photovoltaic voltage control module through a photovoltaic switch; the output end of the photovoltaic voltage control module is connected with the charging and discharging control system, the rectification charging module, the inversion module and the grid-connected inversion module; and the modules are controlled by the system controller. The photovoltaic power generation energy storage system can effectively convert intermittent and relatively unstable light energy into continuous and stable power supply, preferably supply power to a load by solar energy to the maximum extent and charges storage batteries, so that regenerative energy can be effectively used; moreover, effects of cutting peaks and filling valleys are achieved; the safety and the economic property of a power grid are improved; electric energy can be fed back into a public power grid; and regenerative resources can be used to the maximum extent.

Description

The photovoltaic generation energy-storage system
Technical field
The utility model relates to a kind of photovoltaic generation energy-storage system, in particular, relates in particular to a kind ofly by day with the photovoltaic electric power powering load and charge the battery, and utilizes valley power to carry out the photovoltaic generation energy-storage system of store power in the low power consumption period at night.
Background technology
The anxiety of the energy and scarcity make the daily anxiety of electric energy, and in order to satisfy human work and living needs, people bring into use other regenerative resources, and solar energy is as a kind of green non-pollution regenerative resource, by human development and utilize widely.But because photovoltaic resources is intermittent and uncertain, photovoltaic generation is difficult to load a continual and steady supply of electric power is provided.With regard to present network load, electrical network peak load difference is very big, and the electricity shortage on daytime and the electric power at night residue are also deposited.How to use regenerative resource as far as possible, and a part of power consumption is transferred to flat section or low-valley interval from peak period, it is poor to reduce peak load; Reduce reserve capacity; Improve the generating set service efficiency, reduce the wasting of resources, this is a problem demanding prompt solution.
Summary of the invention
The utility model is in order to overcome the shortcoming of above-mentioned technical problem, provides a kind of by day with the photovoltaic electric power powering load and charge the battery, and utilizes valley power to carry out the photovoltaic generation energy-storage system of store power in the low power consumption period at night.
The photovoltaic generation energy-storage system of the utility model; Comprise with conversion of solar energy be electric energy solar energy photovoltaic system, rise computing and control action system controller, carry out temporary batteries of energy and the testing circuit that is used for signals collecting; Its special feature is: also be provided with parallel network reverse module, rectification charging module, discharge and recharge control module, inversion module and switching device shifter; Said solar energy photovoltaic system is connected with the photovoltaic voltage control module through the photovoltaic switch, and the output of photovoltaic voltage control module all is connected with charge-discharge control system, rectification charging module, inversion module and parallel network reverse module; Charge-discharge control system is connected with batteries, and parallel network reverse module, rectification charging module are connected with public electric wire net through the control switch that is incorporated into the power networks, charging module switch respectively; The input of switching device shifter is connected with public electric wire net, inversion module selectivity, and output is connected with AC load; The control end of said system controller all is connected with switching device shifter with parallel network reverse module, rectification charging module, photovoltaic voltage control module, charge-discharge control system, inversion module.
Photovoltaic voltage control module output galvanic current; Charge-discharge control system is according to condition of different, and the control batteries is charged, discharged.Inversion module is an alternating current with the dc inverter of photovoltaic voltage control module output, for AC load work; And the parallel network reverse module with the electric energy inversion after feedback can electrical network, to make full use of solar energy.Behind the AC rectification of rectification charging module with public electric wire net, batteries is charged.Switching device shifter is selected a pair of AC load power supply according to actual conditions in public electric wire net and inversion module.The operating state of each module all receives the control of system controller.
The photovoltaic generation energy-storage system of the utility model, the said control switch that is incorporated into the power networks, charging module switch and photovoltaic switch all are arranged on the Intelligence Selection plate, and the control end of each switch all is connected with system controller.Various parameters that system controller is gathered according to testing circuit and through after the corresponding operation are carried out control corresponding to the on off operating mode of above-mentioned three switches.
The photovoltaic generation energy-storage system of the utility model, said system controller are provided with and are used to distinguish the electricity consumption crest and the timing controller in trough stage; This timing controller is mechanical type, electronic type or formula timing controller able to programme.Timing controller can adopt various ways.
The photovoltaic generation energy-storage system of the utility model, said switching device shifter are used to switch civil power or inversion module is an electric; Switching device shifter is mechanical type or electronic type.Switching device shifter realizes that just public electric wire net, inversion module select a conducting, and it can be chosen according to actual conditions.
The photovoltaic generation energy-storage system of the utility model, the detection limit of said testing circuit comprise the phase place and the frequency of charge power
Figure 2012202750598100002DEST_PATH_IMAGE006
, accumulator battery voltage
Figure 2012202750598100002DEST_PATH_IMAGE008
and public electric wire net of power
Figure 2012202750598100002DEST_PATH_IMAGE004
, the batteries of power output
Figure 2012202750598100002DEST_PATH_IMAGE002
, the AC load of photovoltaic voltage control module.Through calculating relation and the size between
Figure DEST_PATH_IMAGE010
,
Figure 494518DEST_PATH_IMAGE004
,
Figure 473976DEST_PATH_IMAGE006
and , can draw the control corresponding state; Detect the phase place and the frequency of public electric wire net, so that for the output signal of grid-connected inverting system provides lock phase benchmark, and whether the detection civil power has a power failure.
The beneficial effect of the utility model is: (1) is through being provided with the photovoltaic voltage control module; Change continual and steady supply of electric power with intermittent into unsettled relatively luminous energy effectively; And farthest preferentially utilize solar energy for electric and for charge in batteries, effectively utilize regenerative resource; When (2) unavailable and battery capacity reduces when photovoltaic resources, utilize the civil power low-valley interval for electric be charge in batteries as far as possible, reach the effect of peak load shifting, improved the fail safe and the economy of electrical network.When the power that (3) provides when photovoltaic surpasses load with the charge power sum, also can be in public electric wire net feedback electric energy, feasible utilization to renewable resource reaches maximization.
Description of drawings
Fig. 1 is the circuit theory diagrams of the photovoltaic generation energy-storage system of the utility model.
Among the figure: 1 solar energy photovoltaic system, 2 parallel network reverse modules, 3 rectification charging modules, 4 photovoltaic voltage control module; 5 charge-discharge control systems, 6 batteries, 7 inversion modules, 8 switching device shifters; 9 AC loads, 10 system controllers, 11 Intelligence Selection plates, 12 public electric wire nets.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
As shown in Figure 1; The circuit theory diagrams of the photovoltaic generation energy-storage system of the utility model have been provided; It comprises system controller 10, solar energy photovoltaic system 1, photovoltaic voltage control module 4, charge-discharge control system 5, batteries 6, inversion module 7, parallel network reverse module 2, rectification charging module 3, switching device shifter 8, in the system controller can in establish timing controller; Shown system controller 10 is realized the effect of signals collecting, computing and control output, guarantees the normal operation of whole system.It is electric energy that solar energy photovoltaic system 1 is used for renewable energy conversion, and through being input to the input of photovoltaic voltage control module 4 behind the photovoltaic input switch.
The output of photovoltaic voltage control module 4 all is connected with charge-discharge control system 5, inversion module 7, parallel network reverse module 2 and rectification charging module 3, so that the electric energy of photovoltaic voltage control module output can charge to batteries 6, AC load 9 is supplied power and fed back in the public electric wire net 12.The ac output end of public electric wire net 12 is connected with AC load 9, batteries 6 and parallel network reverse module 2 respectively through switching device shifter 8, rectification charging quick closing valve 3, the control switch that is incorporated into the power networks; To AC load 9 and batteries 6 electric energy is provided with realization public electric wire net 12, and grid-connected inverting system feeds back electric energy in public electric wire net.For the ease of cabling and control, the control switch that is incorporated into the power networks, charging module switch and photovoltaic switch all are arranged on the Intelligence Selection plate 11.
The control end of system controller 10 all is connected with Intelligence Selection plate 11, photovoltaic voltage control module 4, charge-discharge control system 5, inversion module 7, parallel network reverse module 2, rectification charging module 3 and the control end of switching device shifter 8, so that opening with shutoff, the output state of photovoltaic voltage control module 4, the operating state of rectification charging module 3, the charging and discharging state of charge-discharge control system 5, the operating state of inversion module 7, the operating state of parallel network reverse module 2 and the operating state of switching device shifter 8 of each quick closing valve on the Intelligence Selection plate 11 controlled.For system controller can be made a distinction the electricity consumption trough period among one day (such as night 22 to 6:00 AM), electricity consumption crest period (for example 6 o'clock to 22 o'clock) effectively; System controller is provided with timing controller, and timing controller can adopt mechanical type, electronic type or formula timing controller able to programme to realize.
Detection circuit is used to achieve the PV voltage control module 4 output power
Figure 459042DEST_PATH_IMAGE002
, 9 AC load power
Figure 335731DEST_PATH_IMAGE004
, battery charging power 6
Figure 971243DEST_PATH_IMAGE006
, battery 6 voltage public grid 12 and the phase and frequency of testing.For the ease of wiring and centralized control, the control switch that is incorporated into the power networks wherein, charging module switch, photovoltaic input switch can be concentrated and be arranged on Intelligence Selection plate 11, the control that system controller 10 is realized the switch on off operating mode.
The photovoltaic generation energy-storage system course of work of the utility model is:
If the power of photovoltaic generation power supply is
Figure 312542DEST_PATH_IMAGE002
; Photovoltaic voltage control module 4 minimum output powers are
Figure DEST_PATH_IMAGE012
; AC load 9 power are
Figure 43738DEST_PATH_IMAGE004
; Batteries 6 charge powers ; Batteries 6 voltages
Figure 604481DEST_PATH_IMAGE008
; Batteries 6 minimum safe protection voltage
Figure DEST_PATH_IMAGE014
; Testing circuit at first detects or calculates
Figure 403809DEST_PATH_IMAGE002
,
Figure 731455DEST_PATH_IMAGE004
,
Figure 223616DEST_PATH_IMAGE006
;
Figure 465241DEST_PATH_IMAGE008
; Detect civil power simultaneously and whether cut off the power supply, to prevent to produce island effect.System controller 10 is according to the break-make of be incorporated into the power networks on the operating state of the detected various Numerical Control switching device shifters of testing circuit and the Intelligence Selection plate control switch, charging module switch and photovoltaic switch; And inversion module 7, parallel network reverse module 2, discharge and recharge the operating state of control module 5, rectification charging module 3 and switching device shifter 8, principal mode is following:
One, in civil power electricity consumption peak stage (for example 6 o'clock to 22 o'clock) that timer is set:
As <img file=" 553414DEST_PATH_IMAGE002.GIF " he=" 26 " img-content=" drawing " img-format=" jpg " inline=" no " orientation=" portrait " wi=" 20 " >during <img file=" 196885DEST_PATH_IMAGE004.GIF " he=" 25 " img-content=" drawing " img-format=" jpg " inline=" no " orientation=" portrait " wi=" 32 " />+<img file=" 594369DEST_PATH_IMAGE006.GIF " he=" 25 " img-content=" drawing " img-format=" jpg " inline=" no " orientation=" portrait " wi=" 26 " />; The system controller control switch device switches to the inversion module power supply; The electric weight that the photovoltaic voltage control module produces removes to AC load power supply and the charging of accumulators group; The simultaneity factor controller control closure control switch that is incorporated into the power networks, the photovoltaic voltage control module is reverse into alternating current with unnecessary energy through the parallel network reverse module and feeds back in the electrical network;
< <img file=" 402105DEST_PATH_IMAGE002.GIF " he=" 26 " img-content=" drawing " img-format=" jpg " inline=" no " orientation=" portrait " wi=" 20 " /> is < during <img file=" 650814DEST_PATH_IMAGE004.GIF " he=" 25 " img-content=" drawing " img-format=" jpg " inline=" no " orientation=" portrait " wi=" 32 " />+<img file=" 232581DEST_PATH_IMAGE006.GIF " he=" 25 " img-content=" drawing " img-format=" jpg " inline=" no " orientation=" portrait " wi=" 26 " /> as <img file=" 323290DEST_PATH_IMAGE004.GIF " he=" 25 " img-content=" drawing " img-format=" jpg " inline=" no " orientation=" portrait " wi=" 32 " />; The system controller control switch device switches to the inversion module power supply, and the electric weight that the photovoltaic voltage control module produces is to AC load power supply and the charging of accumulators group;
< <img file=" 128042DEST_PATH_IMAGE002.GIF " he=" 26 " img-content=" drawing " img-format=" jpg " inline=" no " orientation=" portrait " wi=" 20 " /> < <img file=" 168941DEST_PATH_IMAGE004.GIF " he=" 25 " img-content=" drawing " img-format=" jpg " inline=" no " orientation=" portrait " wi=" 32 " /> as <img file=" 183219DEST_PATH_IMAGE012.GIF " he=" 26 " img-content=" drawing " img-format=" jpg " inline=" no " orientation=" portrait " wi=" 36 " />; And <img file=" 986856DEST_PATH_IMAGE008.GIF " he=" 25 " img-content=" drawing " img-format=" jpg " inline=" no " orientation=" portrait " wi=" 26 " >when <img file=" 424790DEST_PATH_IMAGE014.GIF " he=" 25 " img-content=" drawing " img-format=" jpg " inline=" no " orientation=" portrait " wi=" 34 " />; The system controller control switch device switches to the inversion module power supply, and it is that AC load is supplied power that photovoltaic voltage control module and batteries are united;
< <img file=" 380294DEST_PATH_IMAGE002.GIF " he=" 26 " img-content=" drawing " img-format=" jpg " inline=" no " orientation=" portrait " wi=" 20 " /> < <img file=" 493743DEST_PATH_IMAGE004.GIF " he=" 25 " img-content=" drawing " img-format=" jpg " inline=" no " orientation=" portrait " wi=" 32 " /> as <img file=" 907724DEST_PATH_IMAGE012.GIF " he=" 26 " img-content=" drawing " img-format=" jpg " inline=" no " orientation=" portrait " wi=" 36 " />; And <img file=" 234953DEST_PATH_IMAGE008.GIF " he=" 25 " img-content=" drawing " img-format=" jpg " inline=" no " orientation=" portrait " wi=" 26 " /> is < when <img file=" 459261DEST_PATH_IMAGE014.GIF " he=" 25 " img-content=" drawing " img-format=" jpg " inline=" no " orientation=" portrait " wi=" 34 " />; The system controller control switch device switches to mains-supplied; Civil power is the AC load power supply, and the photovoltaic voltage control module is a battery charging;
As <img file=" 583075DEST_PATH_IMAGE002.GIF " he=" 26 " img-content=" drawing " img-format=" jpg " inline=" no " orientation=" portrait " wi=" 20 " /> < <img file=" 680475DEST_PATH_IMAGE012.GIF " he=" 26 " img-content=" drawing " img-format=" jpg " inline=" no " orientation=" portrait " wi=" 36 " />; And <img file=" 93002DEST_PATH_IMAGE008.GIF " he=" 25 " img-content=" drawing " img-format=" jpg " inline=" no " orientation=" portrait " wi=" 26 " >when <img file=" 183317DEST_PATH_IMAGE014.GIF " he=" 25 " img-content=" drawing " img-format=" jpg " inline=" no " orientation=" portrait " wi=" 34 " />, batteries is the AC load power supply;
As <img file=" 925752DEST_PATH_IMAGE002.GIF " he=" 26 " img-content=" drawing " img-format=" jpg " inline=" no " orientation=" portrait " wi=" 20 " /> < <img file=" 177742DEST_PATH_IMAGE012.GIF " he=" 26 " img-content=" drawing " img-format=" jpg " inline=" no " orientation=" portrait " wi=" 36 " />; And <img file=" 77565DEST_PATH_IMAGE008.GIF " he=" 25 " img-content=" drawing " img-format=" jpg " inline=" no " orientation=" portrait " wi=" 26 " /> is < when <img file=" 456725DEST_PATH_IMAGE014.GIF " he=" 25 " img-content=" drawing " img-format=" jpg " inline=" no " orientation=" portrait " wi=" 34 " />; The system controller control switch device switches to mains-supplied; Rectification charging switch closure on the simultaneity factor controller control Intelligence Selection plate; Civil power is the AC load power supply, is battery charging simultaneously.
Two, in civil power electricity consumption trough stage (for example 22 o'clock to 6 o'clock) that timer is set:
The system controller control switch device switches to mains-supplied, the rectification charging switch closure on the simultaneity factor controller control Intelligence Selection plate, and civil power is the AC load power supply, is battery charging simultaneously.

Claims (5)

1. photovoltaic generation energy-storage system; Comprise with conversion of solar energy be electric energy solar energy photovoltaic system (1), rise computing and control action system controller (10), carry out temporary batteries (6) of energy and the testing circuit that is used for signals collecting; It is characterized in that: also be provided with parallel network reverse module (2), rectification charging module (3), discharge and recharge control module (5), inversion module (7) and switching device shifter (8); Said solar energy photovoltaic system is connected with photovoltaic voltage control module (4) through the photovoltaic switch, and the output of photovoltaic voltage control module all is connected with charge-discharge control system, rectification charging module, inversion module and parallel network reverse module; Charge-discharge control system is connected with batteries, and parallel network reverse module, rectification charging module are connected with public electric wire net (12) through the control switch that is incorporated into the power networks, charging module switch respectively; The input of switching device shifter is connected with public electric wire net, inversion module selectivity, and output is connected with AC load (9); The control end of said system controller all is connected with switching device shifter with parallel network reverse module, rectification charging module, photovoltaic voltage control module, charge-discharge control system, inversion module.
2. photovoltaic generation energy-storage system according to claim 1; It is characterized in that: the said control switch that is incorporated into the power networks, charging module switch and photovoltaic switch all are arranged on the Intelligence Selection plate (11), and the control end of each switch all is connected with system controller (10).
3. wind light mutual complementing energy-storing and power-generating system according to claim 1 and 2 is characterized in that: said system controller (10) is provided with and is used to distinguish the electricity consumption crest and the timing controller in trough stage; This timing controller is mechanical type, electronic type or formula timing controller able to programme.
4. wind light mutual complementing energy-storing and power-generating system according to claim 1 and 2 is characterized in that: said switching device shifter (8) is used to switch civil power or inversion module is an electric; Switching device shifter is mechanical type or electronic type.
5. photovoltaic generation energy-storage system according to claim 1 and 2 is characterized in that: the detection limit of said testing circuit comprises the phase place and the frequency of charge power , accumulator battery voltage
Figure DEST_PATH_IMAGE008
and public electric wire net of power
Figure 2012202750598100001DEST_PATH_IMAGE004
, the batteries (6) of power output , the AC load (9) of photovoltaic voltage control module (4).
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CN105576808A (en) * 2016-03-02 2016-05-11 英飞特电子（杭州）股份有限公司 Solar energy charging system
CN106712264A (en) * 2016-12-01 2017-05-24 国网山东省电力公司青岛供电公司 Distributed power supply system
CN107769368A (en) * 2017-10-22 2018-03-06 深圳市微埃智能科技有限公司 The shared trip electric car charging of one kind uses up storage and fills vehicle integrated system
CN109774848A (en) * 2017-11-13 2019-05-21 宝马汽车股份有限公司 Power supply in transportation system
CN107821664A (en) * 2017-12-11 2018-03-23 湖南桑仁行农业科技股份有限公司 A kind of tea-processing equipment for saving electric energy
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CN108377001B (en) * 2018-04-24 2024-02-06 上海振华重工电气有限公司 Photovoltaic energy storage system and method for peak clipping and valley filling of electricity consumption
CN109494863A (en) * 2018-11-28 2019-03-19 北京铂阳顶荣光伏科技有限公司 A kind of Photovoltaic Building Integration system
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CN110690722B (en) * 2019-09-19 2024-01-02 深圳市朝阳辉电气设备有限公司 Photovoltaic energy storage grid-connected power generation system and operation method thereof
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CN111775756A (en) * 2020-06-24 2020-10-16 深圳科士达科技股份有限公司 Light storage and charging micro-grid system and control method thereof
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