CN202495889U - Intelligent photovoltaic power generation system - Google Patents
Intelligent photovoltaic power generation system Download PDFInfo
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- CN202495889U CN202495889U CN2011204921464U CN201120492146U CN202495889U CN 202495889 U CN202495889 U CN 202495889U CN 2011204921464 U CN2011204921464 U CN 2011204921464U CN 201120492146 U CN201120492146 U CN 201120492146U CN 202495889 U CN202495889 U CN 202495889U
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model discloses an intelligent photovoltaic power generation system. The intelligent photovoltaic power generation system comprises a user terminal and one or a plurality of power generation subsystems, wherein the user terminal is connected with the power generation subsystems; the power generation subsystem comprises a photovoltaic matrix, an intelligent control inverter module, an alternative current distribution device and a system monitoring module, the photovoltaic matrix, the intelligent control inverter module and the alternative current distribution module are connected in sequence; and the system monitoring module is connected with the intelligent control inverter module. The intelligent photovoltaic power generation system is divided into power generation subsystems which are independent from each other, and each power generation subsystem is controlled by the small and simple control inverter module. The user terminal simultaneously monitors one or more power generation subsystems, and can simultaneously achieve off-grid work of the partial power generation subsystem and grid-tied work of the partial power generation subsystem. The power generation subsystems can be increased or decreased at any moment, the flexibility and scalability are strong, and repair process is easy.
Description
Technical field
The utility model relates to a kind of electricity generation system, relates in particular to a kind of intelligent photovoltaic generating system.
Background technology
The energy is the important leverage of social and economic development, and developing regenerative resource energetically is the main path that solves energy crisis.Solar energy power generating is a kind of renewable energy power generation technology that has the sustainable development desired characteristics most.
In recent years, China and photovoltaic industry fast development all over the world, constantly perfect, the raising of photovoltaic power generation technology and application level.Solar photovoltaic generation system can be divided into independent (from net) photovoltaic generating system and grid-connected photovoltaic power generation system on big type.Wherein, The power storage that the self solar power system produces solar energy through controller is in storage battery; Can directly use with galvanic form, can convert direct current into alternating current with the ac converter technology yet and supply load to use, system is not connected to the grid in the course of the work.And the parallel networking type photovoltaic electricity generation system becomes electric energy by the solar panel square formation with transform light energy; And through inverter direct current energy is converted into and to meet necessarily required AC energy and go so that be fed in the AC network; In entire work process, to the direct current I/V in the transfer process, exchange I/V and detect through various detection methods; To the electrical network contrast of sampling, the whole system operation state has been carried out real-time control.
In general the system that is incorporated into the power networks seems more complicated than off-grid type operational system technically, and therefore, unit and domestic small solar photovoltaic generation system are designed to from the network operation formula more.Present unit and household small-sized solar power generation system are designed to fixed form more; Do not introduce the processing scheme of module combinations; Thereby do not have to introduce the technology of each sub-systems being carried out independent control yet, do not introduce the processing method of the operating state of each sub-systems in the big system and running parameter being done concrete control survey and detailed passback yet.And the parallel networking type photovoltaic electricity generation system in use often need dispose in, powerful control and inversion device, can not utilize small-power control and inversion device to be combined into the electric power system of certain power according to user's request, flexibility, extendibility are poor.
Summary of the invention
The utility model technical problem to be solved is, provides a kind of practicality, independence, extendibility strong, but the intelligent photovoltaic generating system of flexible combination.
In order to solve the problems of the technologies described above, the utility model provides a kind of intelligent photovoltaic generating system, comprises user terminal and one or more power generation sub-system, and said user terminal links to each other with power generation sub-system; Said power generation sub-system comprise be used for transform light energy become direct current energy photovoltaic arrays, be used for said direct current energy convert to AC energy and according to said direct current energy and AC energy generate monitor message the Based Intelligent Control inversion module, be used for said AC energy is sent to the AC distribution device of electrical network and is used to transmit the system monitoring module of said monitor message; Said photovoltaic arrays, Based Intelligent Control inversion module and AC distribution module connect successively, and said system monitoring module links to each other with the Based Intelligent Control inversion module; Said monitor message comprises dc voltage value, DC current values, ac voltage, alternating current flow valuve, alarm signal and and leaves and net operating state.
As the improvement of such scheme, said Based Intelligent Control inversion module comprises: be used to obtain the real-time acquiring unit by the converted direct current energy of said photovoltaic arrays; Link to each other with said real-time acquiring unit, be used for said direct current energy is converted to the converting unit of AC energy; Link to each other respectively with said real-time acquiring unit and converting unit, be used for monitoring unit according to said direct current energy and AC energy generation monitor message; Link to each other with said converting unit, be used for said AC energy is sent to the transmitting element of AC distribution device.
As the improvement of such scheme, said monitoring unit comprises: first monitoring unit that is used for generating according to said direct current energy dc voltage value and DC current values; Be used for generating second monitoring unit of ac voltage and alternating current flow valuve according to said AC energy; The 3rd monitoring unit that is used to detect said power generation sub-system and leaves the net operating state.
As the improvement of such scheme, said Based Intelligent Control inversion module also comprises and is used to carry out under-voltage protection, output overcurrent protection, MPPT maximum power point tracking, frequency-tracking, Phase Tracking and guarantees conversion efficiency and the satisfactory track protection of output distortion degree unit.
As the improvement of such scheme, said system monitoring module comprises: the acquiring unit that is used to obtain the monitor message that said Based Intelligent Control inversion module generates; Link to each other with said acquiring unit, be used for said monitor message is forwarded to the retransmission unit of said user terminal.
As the improvement of such scheme, said power generation sub-system also comprises the direct current terminal box, and said direct current terminal box links to each other respectively with said photovoltaic arrays and Based Intelligent Control inversion module.
As the improvement of such scheme, be provided with first protective unit that is used to carry out anti-reverse protection, lightning protection and the protection of protecting against shock electric current and voltage in the said direct current terminal box.
As the improvement of such scheme, be provided with second protective unit that is used to carry out relay overcurrent protection, anti-thunderbolt protection and the protection of protecting against shock electric current and voltage in the said AC distribution device.
As the improvement of such scheme, said power generation sub-system also comprises storage battery, and said storage battery links to each other with the Based Intelligent Control inversion module.
The beneficial effect of implementing the utility model is: intelligent photovoltaic generating system comprises user terminal and one or more power generation sub-system; The intelligence photovoltaic generating system is divided into each separate power generation sub-system, and each power generation sub-system adopts easy small-sized control inversion module to control.User terminal is monitored one or more power generation sub-system simultaneously; The inversion situation of each power generation sub-system and operating state come into plain view; The work but implementation part power generation sub-system parton system from the net work time is incorporated into the power networks increases and decreases power generation sub-system at any time, and flexibility, extendibility are strong.Simultaneously, when in the intelligent photovoltaic generating system arbitrarily power generation sub-system occur damaging or during irregular working, can in time do the processing that breaks away from electrical network or stop inversion, maintenance work can in time be carried out, can not influence whole system operation.In addition, control inversion module in the power generation sub-system and the monitoring of user terminal common implementing, duplicate protection makes the overload situations of each power generation sub-system in time controlled.
Description of drawings
Fig. 1 is the structural representation of a kind of intelligent photovoltaic generating system of the utility model;
Fig. 2 is the another structural representation of a kind of intelligent photovoltaic generating system of the utility model;
Fig. 3 is the structural representation of power generation sub-system 2 in a kind of intelligent photovoltaic generating system of the utility model;
Fig. 4 is the another structural representation of power generation sub-system 2 in a kind of intelligent photovoltaic generating system of the utility model;
Fig. 5 is the structural representation of Based Intelligent Control inversion module 22 among Fig. 4;
Fig. 6 is another structural representation of Based Intelligent Control inversion module 22 among Fig. 4;
Fig. 7 is the structural representation of system monitoring module 24 among Fig. 4.
Embodiment
For the purpose, technical scheme and the advantage that make the utility model is clearer, will combine accompanying drawing that the utility model is done to describe in detail further below.
The intelligence photovoltaic generating system comprises user terminal 1 and one or more power generation sub-system 2, and said user terminal 1 links to each other with power generation sub-system 2.
As shown in Figure 1, user terminal 1 links to each other with a power generation sub-system 2, and user terminal 1 is only controlled a power generation sub-system 2.
Correspondingly, as shown in Figure 2, user terminal 1 links to each other with three power generation sub-system 2, and user terminal 1 is controlled three power generation sub-system 2 simultaneously.Need to prove that user terminal 1 can be controlled a plurality of power generation sub-system 2 simultaneously, the user can insert the power generation sub-system 2 of varying number according to actual needs.
The intelligence photovoltaic generating system can be divided into a plurality of separate power generation sub-system 2, and the one or more power generation sub-system 2 of the independent simultaneously control of user terminal 1 make the inversion situation of each power generation sub-system 2 and operating state come into plain view.In addition, can make a part of power generation sub-system 2 in net work, make the work of being incorporated into the power networks of other a part of power generation sub-system 2 under the control of user terminal 1, and increase and decrease power generation sub-system 2 at any time, flexibility, extendibility are strong.Simultaneously, when in the intelligent photovoltaic generating system arbitrarily power generation sub-system 2 occur damaging or during irregular working, user terminal 1 can in time be done the processing that breaks away from electrical network or stop inversion, and maintenance work can in time be carried out, and can not influence whole system operation.
Need to prove that user terminal 1 carries out the electronic address numbering to each power generation sub-system 2, realizes the monitoring to power generation sub-system 2 through wired or wireless mechanics of communication.
Fig. 3 is the structural representation of power generation sub-system 2 in a kind of intelligent photovoltaic generating system of the utility model, and said power generation sub-system 2 comprises photovoltaic arrays 21, Based Intelligent Control inversion module 22, AC distribution device 23 and system monitoring module 24.
Based Intelligent Control inversion module 22 links to each other with said photovoltaic arrays 21, is used for said direct current energy is converted to AC energy and generates monitor message according to said direct current energy and AC energy.Said monitor message comprises dc voltage value, DC current values, ac voltage, alternating current flow valuve, alarm signal and and leaves and net operating state.
Carry out inversion through photovoltaic arrays 21 converted direct current energies by Based Intelligent Control inversion module 22 and handle, make direct current energy convert AC energy to.Simultaneously; Based Intelligent Control inversion module 22 generates dc voltage value and DC current values according to the direct current energy before the inversion; Generate ac voltage and alternating current flow valuve according to the AC energy after the inversion; And control dc voltage value, DC current values, ac voltage and alternating current flow valuve change in certain scope, generates alarm signal according to dc voltage value, DC current values, ac voltage, alternating current flow valuve and realize the monitoring to power generation sub-system 2.
More preferably, be provided with second protective unit that is used to carry out relay overcurrent protection, anti-thunderbolt protection and the protection of protecting against shock electric current and voltage in the said AC distribution device 23.
Therefore, outside the monitoring of power generation sub-system 2 Based Intelligent Control inversion module 22 in accepting native system, also accept the real-time monitoring of user terminal 1 simultaneously, under the situation of duplicate protection, power generation sub-system 2 is moved better.
Fig. 4 is the another structural representation of power generation sub-system 2 in a kind of intelligent photovoltaic generating system of the utility model; Said power generation sub-system 2 also comprises direct current terminal box 25, and said direct current terminal box 25 links to each other respectively with said photovoltaic arrays 21 and Based Intelligent Control inversion module 22.Adopt the transition apparatus of terminal box 25, play the effect of protection photovoltaic arrays 21 and Based Intelligent Control inversion module 22 as 22 of photovoltaic arrays 21 and Based Intelligent Control inversion modules.Preferably, be provided with first protective unit that is used to carry out anti-reverse protection, lightning protection and the protection of protecting against shock electric current and voltage in the said direct current terminal box 25.
More preferably, said power generation sub-system 2 also comprises storage battery 26, and said storage battery 26 links to each other with Based Intelligent Control inversion module 22.The direct current energy that photovoltaic arrays 21 is produced through Based Intelligent Control inversion module 22 is stored in the storage battery 26 to realize from net work.
For example, photovoltaic arrays 21 produces at luminous element under the situation of illumination, absorbs luminous energy and transform light energy is become direct current energy.Direct current energy transfers in the Based Intelligent Control inversion module 22 via direct current terminal box 25, and carries out inversion by Based Intelligent Control inversion module 22 and handle, and makes direct current energy convert AC energy to, and generates monitor message according to said direct current energy and AC energy.Meanwhile, system monitoring module 24 is sent to user terminal 1 with monitor message and monitors in real time.Under the dual monitoring of Based Intelligent Control inversion module 22 and user terminal 1; Based Intelligent Control inversion module 22 is made the processing decision from the net work or the work of being incorporated into the power networks; When being chosen as when being incorporated into the power networks work, Based Intelligent Control inversion module 22 through AC distribution device 23 just the AC energy after the inversion be sent to electrical network and realize the work of being incorporated into the power networks; When being chosen as from net work, the Based Intelligent Control inversion module 22 not direct current energy of inversion is stored in the storage battery 26 to realize from net work.
Fig. 5 is the structural representation of Based Intelligent Control inversion module 22 among Fig. 4, and said Based Intelligent Control inversion module 22 comprises:
Be used to obtain real-time acquiring unit 221 by the converted direct current energy of said photovoltaic arrays 21.
Link to each other with said real-time acquiring unit 221, be used for said direct current energy is converted to the converting unit 222 of AC energy.Converting unit 222 adopts discrete device to build full bridge inverter, and service efficiency is high, and harmonic wave is little, and the output symmetry is good.
Link to each other respectively with said real-time acquiring unit 221 and converting unit 222, be used for monitoring unit 223 according to said direct current energy and AC energy generation monitor message.
Link to each other with said converting unit 223, be used for said AC energy is sent to the transmitting element 224 of AC distribution device 23.Be sent to AC distribution device 23 through converting unit 223 converted AC energies by transmitting element 224, realize the transmission of AC energy with this.
For example, photovoltaic arrays 21 produces at luminous element under the situation of illumination, absorbs luminous energy and transform light energy is become direct current energy.After direct current energy was obtained by the real-time acquiring unit 221 in the Based Intelligent Control inversion module 22, the inverter circuit in converting unit 222 converted AC energy into; At this moment, the monitoring unit 223 that links to each other with real-time acquiring unit 221 and converting unit 222 respectively generates monitor message according to said direct current energy and AC energy, and is sent to user terminal 1 by system monitoring module 24; In addition, the transmitting element 224 that links to each other with converting unit 223 is sent to AC distribution device 23 with AC energy, realizes the transmission of AC energy with this.AC distribution device 23 obtains AC energy and is sent to electrical network, realizes being incorporated into the power networks.
More preferably, said Based Intelligent Control inversion module 22 also comprises and is used to carry out under-voltage protection, output overcurrent protection, MPPT maximum power point tracking, frequency-tracking, Phase Tracking and guarantees conversion efficiency and the satisfactory track protection of output distortion degree unit 225.
Need to prove that track protection unit 225 adopts digital wave table method, generates triangular wave and sine wave, then directly to the Wave data in the wave table, the utilization digital comparator compares, thus the output of control sine pulse.In addition, also use the increment conductance method, the dc voltage value and the DC current values of photovoltaic arrays 21 outputs are sampled.Conductance increment through photovoltaic arrays 21 relatively and moment electricity lead, the modulation ratio of progressively regulating the sine pulse ripple goes to realize the control of maximum power.Track protection unit 225 also adopts comparator that reference signal is shaped as square-wave signal, through surveying the frequency of periodic method measuring reference signals, and according to the carrier wave ratio of this frequency adjustment sine pulse ripple, makes the frequency of inversion feedback signal equal the frequency of reference signal.Follow the tracks of along triggering synchronous simultaneously, trigger Direct Digital Synthesizer when the square-wave signal rising edge arrives, produce sinusoidal signal, thereby make sinusoidal signal modulating wave and the output of reference signal homophase in the sine pulse ripple from phase zero points.
Fig. 6 is another structural representation of Based Intelligent Control inversion module 22 among Fig. 4, and said monitoring unit 223 comprises:
Be used for generating first monitoring unit 2231 of dc voltage value and DC current values according to said direct current energy.First monitoring unit 2231 adopts current sense amplifier chip and difference input circuit that electric current is sampled to obtain DC current values; Adopt the electric resistance partial pressure method that direct voltage is adopted with this in addition and obtain dc voltage value.
Be used for generating second monitoring unit 2232 of ac voltage and alternating current flow valuve according to said AC energy.Second monitoring unit 2232 carries out the extraction of alternating current, alternating voltage through current transformer, voltage transformer, and extracts alternating current flow valuve and ac voltage through analog-to-digital conversion.
The 3rd monitoring unit 2233 that is used to detect said power generation sub-system 2 and leaves the net operating state.
Link to each other respectively with said first monitoring unit 2231, second monitoring unit 2232, be used to judge the whether judging unit 2234 in normal range (NR) of said dc voltage value, DC current values, ac voltage and alternating current flow valuve.
Link to each other with said judging unit 2234, be used for when said judging unit 2234 judge said dc voltage value, DC current values, ac voltage and alternating current flow valuve each not in normal range (NR) the time, generate the alarm unit 2235 of warning information.
Need to prove; Be preset with effective dc voltage value, effective DC current values, effective ac voltage and effective alternating current flow valuve in the judging unit 2234; Judging unit 2234 is with dc voltage value and effective dc voltage value; DC current values and effective DC current values, ac voltage and effective ac voltage; The alternating current flow valuve compares respectively with effective alternating current flow valuve, and when in dc voltage value, DC current values, ac voltage and the alternating current flow valuve each was not in preset range, judging unit 2234 generated and stops inversion or realization is incorporated into the power networks or off-grid warning message.
Link to each other with said alarm unit 2235, be used for making the response unit 2236 that stops inversion, is incorporated into the power networks and handles or handle from net according to said warning message.
In the course of work, power generation sub-system 2 can realize from the net work or the work of being incorporated into the power networks under the control of response unit 2236 and user terminal 1 according to actual needs.
Fig. 7 is the structural representation of system monitoring module 24 among Fig. 4, and said system monitoring module 24 comprises:
Be used to obtain the acquiring unit 241 of the monitor message that said Based Intelligent Control inversion module 22 generates.
Link to each other with said acquiring unit 241, be used for said monitor message is forwarded to the retransmission unit 242 of said user terminal 1.Retransmission unit 242 has been realized the information transmission of 2 of user terminal 1 and power generation sub-system, makes monitor message in the power generation sub-system after leaflet unit 242 is sent to user terminal 1, and user terminal 1 is monitored power generation sub-system 2 according to monitor message.
By on can know that intelligent photovoltaic generating system comprises user terminal 1 and one or more power generation sub-system 2, each power generation sub-system 2 adopts easy small-sized control inversion module 22 to control.User terminal 1 is monitored one or more power generation sub-system 2 simultaneously; The inversion situation of each power generation sub-system 2 and operating state come into plain view; The work but implementation part power generation sub-system 2 parton system 2 in the time of net work is incorporated into the power networks increases and decreases power generation sub-system at any time, and flexibility, extendibility are strong.Simultaneously, when in the intelligent photovoltaic generating system arbitrarily power generation sub-system 2 occur damaging or during irregular working, can in time do the processing that breaks away from electrical network or stop inversion, maintenance work can in time be carried out, can not influence whole system operation.In addition, control inversion module 22 in the power generation sub-system and the monitoring of user terminal 1 common implementing, duplicate protection makes the overload situations of each power generation sub-system 2 in time controlled.
The above is the preferred implementation of the utility model; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also are regarded as the protection range of the utility model.
Claims (9)
1. an intelligent photovoltaic generating system is characterized in that, said intelligent photovoltaic generating system comprises user terminal and one or more power generation sub-system, and said user terminal links to each other with power generation sub-system;
Said power generation sub-system comprise be used for transform light energy become direct current energy photovoltaic arrays, be used for said direct current energy convert to AC energy and according to said direct current energy and AC energy generate monitor message the Based Intelligent Control inversion module, be used for said AC energy is sent to the AC distribution device of electrical network and is used to transmit the system monitoring module of said monitor message; Said photovoltaic arrays, Based Intelligent Control inversion module and AC distribution module connect successively, and said system monitoring module links to each other with the Based Intelligent Control inversion module;
Said monitor message comprises dc voltage value, DC current values, ac voltage, alternating current flow valuve, alarm signal and and leaves and net operating state.
2. intelligent photovoltaic generating system as claimed in claim 1 is characterized in that, said Based Intelligent Control inversion module comprises:
Be used to obtain real-time acquiring unit by the converted direct current energy of said photovoltaic arrays;
Link to each other with said real-time acquiring unit, be used for said direct current energy is converted to the converting unit of AC energy;
Link to each other respectively with said real-time acquiring unit and converting unit, be used for monitoring unit according to said direct current energy and AC energy generation monitor message;
Link to each other with said converting unit, be used for said AC energy is sent to the transmitting element of AC distribution device.
3. intelligent photovoltaic generating system as claimed in claim 2 is characterized in that, said monitoring unit comprises:
Be used for generating first monitoring unit of dc voltage value and DC current values according to said direct current energy;
Be used for generating second monitoring unit of ac voltage and alternating current flow valuve according to said AC energy;
The 3rd monitoring unit that is used to detect said power generation sub-system and leaves the net operating state.
4. like claim 2 or 3 described intelligent photovoltaic generating systems; It is characterized in that said Based Intelligent Control inversion module also comprises and is used to carry out under-voltage protection, output overcurrent protection, MPPT maximum power point tracking, frequency-tracking, Phase Tracking and guarantees conversion efficiency and the satisfactory track protection of output distortion degree unit.
5. intelligent photovoltaic generating system as claimed in claim 1 is characterized in that, said system monitoring module comprises:
Be used to obtain the acquiring unit of the monitor message that said Based Intelligent Control inversion module generates;
Link to each other with said acquiring unit, be used for said monitor message is forwarded to the retransmission unit of said user terminal.
6. intelligent photovoltaic generating system as claimed in claim 1 is characterized in that said power generation sub-system also comprises the direct current terminal box, and said direct current terminal box links to each other respectively with said photovoltaic arrays and Based Intelligent Control inversion module.
7. intelligent photovoltaic generating system as claimed in claim 6 is characterized in that, is provided with first protective unit that is used to carry out anti-reverse protection, lightning protection and the protection of protecting against shock electric current and voltage in the said direct current terminal box.
8. intelligent photovoltaic generating system as claimed in claim 1 is characterized in that, is provided with second protective unit that is used to carry out relay overcurrent protection, anti-thunderbolt protection and the protection of protecting against shock electric current and voltage in the said AC distribution device.
9. intelligent photovoltaic generating system as claimed in claim 1 is characterized in that said power generation sub-system also comprises storage battery, and said storage battery links to each other with the Based Intelligent Control inversion module.
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| CN2011204921464U CN202495889U (en) | 2011-12-01 | 2011-12-01 | Intelligent photovoltaic power generation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103077477A (en) * | 2012-12-25 | 2013-05-01 | 黑龙江省电力科学研究院 | Intelligent office system of light-storage electric car charging-transforming power station |
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2011
- 2011-12-01 CN CN2011204921464U patent/CN202495889U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103077477A (en) * | 2012-12-25 | 2013-05-01 | 黑龙江省电力科学研究院 | Intelligent office system of light-storage electric car charging-transforming power station |
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