CN202352696U - Intelligent photovoltaic array lightning-proof combiner box - Google Patents
Intelligent photovoltaic array lightning-proof combiner box Download PDFInfo
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- CN202352696U CN202352696U CN2011204657512U CN201120465751U CN202352696U CN 202352696 U CN202352696 U CN 202352696U CN 2011204657512 U CN2011204657512 U CN 2011204657512U CN 201120465751 U CN201120465751 U CN 201120465751U CN 202352696 U CN202352696 U CN 202352696U
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- lightning
- copper bar
- lightning protection
- photovoltaic array
- intelligent photovoltaic
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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
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Abstract
The utility model discloses an intelligent photovoltaic array lightning-proof combiner box. The intelligent photovoltaic array lightning-proof combiner box comprises a box body shell, anode fuses and cathode fuses, wherein the anode fuses are connected in parallel through anode copper bars; and the cathode fuses are connected in parallel through cathode copper bars. The intelligent photovoltaic array lightning-proof combiner box is characterized by also comprising a direct current (DC) circuit breaker, a combination output end, an array electric quantity measurement board, a measurement and control unit and a direct current (DC) lightning protection device, wherein the anode copper bars and the cathode copper bars are connected with corresponding terminals of the combination output end; the array electric quantity measurement board is arranged between the anode fuses and the cathode fuses and is connected with the measurement and control unit; the anode copper bars and the cathode copper bars are connected with the DC lightning protection device; and the DC lightning protection device is grounded. The intelligent photovoltaic array lightning-proof combiner box solves the problem that the combiner box is prone to be stroked by lightning, a photovoltaic power generation system is easy to damage, and the work states of each group of series solar batteries cannot be detected in real time. The utility model provides the intelligent photovoltaic array lightning-proof combiner box, which has a simple structure, functions of detecting current and voltage and a better lightning protection effect.
Description
Technical field
The utility model relates to photovoltaic generation with photovoltaic array header box technical field, particularly relates to a kind of intelligent photovoltaic array lightning protection header box.
Background technology
Photovoltaic is the abbreviation of solar photovoltaic generation system, is a kind of photovoltaic effect of utilizing the solar cell semi-conducting material, solar radiation can directly be converted into a kind of new-generation system of electric energy; Independent operating is arranged and be incorporated into the power networks dual mode, in solar photovoltaic generation system, can use header box, have another name called the solar energy header box; The photovoltaic header box, photovoltaic array lightning protection header box, solar power generation header box; The photovoltaic generation header box, photovoltaic lightning protection header boxs etc. are together in series some, photovoltaic cell that specification is identical; Form photovoltaic tandem one by one, and then several photovoltaic tandem parallel connections are inserted header box.
Deliver to inverter after header box confluxes, through inverter with dc inversion for exchange and boost after deliver to electrical network.In the link of whole solar energy power generating, the direct current output has accounted for very big ratio, and in large-area solar cell array, electric equipments such as direct current cables, cable testing bridge, direct current header box are to arrange a large amount of interting.In order to reduce the photovoltaic array to the maintenance in the future of the connecting line between the inverter, the protection battery component must be at outdoor configuration photovoltaic array photovoltaic DC header box.The solar energy power generating project is usually placed in open smooth place, because of lacking the sudden strain of a muscle effect that connects to direct lightning strike of high-lager building and trees, the thunderbolt incident takes place very easily; In addition; Solar photovoltaic cell panel overvoltage ability is relatively poor, and the area of photovoltaic generation field is big, and the probability that is struck by lightning is very high; If do not take lightning measure, then the overall optical photovoltaic generating system will produce the loss that can't estimate.
Simultaneously, at present common header box is comparatively simple mostly, has only combining functions; Only be that the multichannel array of importing is converged into one tunnel output, do not have modularization, be not easy to expansion; And do not have communication interface, can not detect the operating state of each group string solar cell in real time, do not have controllability.
The utility model content
Header box is struck by lightning easily in the prior art in order to solve; Photovoltaic generating system damages easily; Can not detect simultaneously the operating state of each group string solar cell in real time, not have the problem of controllability, it is a kind of simple in structure that the utility model provides; Have electric current and voltage detecting function, and have the intelligent photovoltaic array lightning protection header box of better lightning protection effect.
In order to address the above problem, the technical scheme that the utility model is taked is:
A kind of intelligent photovoltaic array lightning protection header box; Comprise cabinet shell; In cabinet shell, be provided with anodal fuse, negative pole fuse, anodal copper bar and negative pole copper bar; Said anodal fuse is connected in parallel through anodal copper bar; Said negative pole fuse is connected in parallel through the negative pole copper bar, it is characterized in that: also comprise dc circuit breaker, the output that confluxes, array electrical measurement plate, measurement and control unit and DC lightning prevention device, said anodal copper bar is connected with the output corresponding terminal that confluxes through dc circuit breaker with the negative pole copper bar; Between anodal fuse and anodal copper bar, be provided with array electrical measurement plate; Said array electrical measurement plate is connected with the measurement and control unit that is arranged on dc circuit breaker and conflux between the output, and said anodal copper bar is connected with the DC lightning prevention device with the negative pole copper bar, and said DC lightning prevention device is connected ground connection with the ground connection copper bar.
Aforesaid a kind of intelligent photovoltaic array lightning protection header box, it is characterized in that: said measurement and control unit is connected with lightning protection for power supply, and said lightning protection for power supply is connected ground connection with the ground connection copper bar.
Aforesaid a kind of intelligent photovoltaic array lightning protection header box, it is characterized in that: anodal copper bar and negative pole copper bar are provided with the polymethyl methacrylate baffle plate.
Aforesaid a kind of intelligent photovoltaic array lightning protection header box is characterized in that: said array electrical measurement plate adopts the Hall element plate.
Aforesaid a kind of intelligent photovoltaic array lightning protection header box, it is characterized in that: in cabinet shell, be provided with heater and temperature sensor, said temperature sensor is connected with measurement and control unit, and said measurement and control unit also is connected with temperature sensor.
The beneficial effect of the utility model is: the utility model header box is provided with DC lightning prevention device and lightning protection for power supply; Have lightning protection and anti-overvoltage performance concurrently; The protection solar photovoltaic cell panel exempts from the infringement of lightning strike induction voltage and switching overvoltage etc.; No matter fuse is arranged on which and effectively protects to can export the short circuit that produces the time, and all through dc circuit breaker, dc circuit breaker makes things convenient in maintenance or in emergency circumstances breaks off being connected of photovoltaic array and inverter when anodal copper bar and negative pole copper bar conflux output; Thereby guaranteed the safety of photovoltaic electrical network, improved the reliability of system.Lightning arrester is arranged in the lightning protection header box shell, and it is compact, attractive in appearance that a components and parts is arranged, meets safety requirements.
The utility model measurement and control unit can realize detecting every tributary electric current, output voltage, lightning protection device state, can accurately supervise the operating state of DC source, improves the controllability in power station, improves the promptness and the efficient of maintenance, thereby improves energy output, avoids power generation loss.And can monitor the lightning protection device state, in time alarm is changed the inefficacy lightning protection device, improves the power station reliability of operation.
Description of drawings
Fig. 1 is the utility model intelligence photovoltaic array lightning protection header box structure chart.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further to describe.
As shown in Figure 1; A kind of intelligent photovoltaic array lightning protection header box; Comprise cabinet shell 1, in cabinet shell 1, be provided with anodal fuse 2, negative pole fuse 3, anodal copper bar 4, negative pole copper bar 5, dc circuit breaker 6, the output 7 that confluxes, array electrical measurement plate 8, measurement and control unit 9, DC lightning prevention device 10, lightning protection for power supply 11, ground connection copper bar 12, polymethyl methacrylate baffle plate 13.Anodal fuse 2 is connected in parallel through anodal copper bar 4; Negative pole fuse 3 is connected in parallel through negative pole copper bar 5; Anodal copper bar 4 is connected with output 7 corresponding terminals that conflux through dc circuit breaker 6 with negative pole copper bar 5; Between anodal fuse 2 and anodal copper bar 4, be provided with array electrical measurement plate 8; Array electrical measurement plate 8 is connected with the measurement and control unit 9 that is arranged on dc circuit breaker 6 and conflux between the output 7, and anodal copper bar 4 is connected with DC lightning prevention device 10 with negative pole copper bar 5, and DC lightning prevention device 10 is connected ground connection with ground connection copper bar 11.
Measurement and control unit 9 is connected with lightning protection for power supply 11, and lightning protection for power supply 11 is connected ground connection with ground connection copper bar 12.Anodal copper bar 4 is provided with polymethyl methacrylate baffle plate 13 with negative pole copper bar 5.Measurement and control unit 9 can be realized PV group crosstalk component analysis, functions such as fault localization.Array electrical measurement plate 8 can adopt the Hall element plate during design.
In cabinet shell 1, be provided with heater and temperature sensor, temperature sensor is connected with measurement and control unit, and measurement and control unit 9 also is connected with temperature sensor.When ambient temperature during less than the low temperature threshold temperature measurement and control unit 9 start heater heats; When ambient temperature during greater than the low temperature threshold temperature heater stop heating.
The utility model intelligence photovoltaic array lightning protection header box has following functional characteristics:
1, satisfies the instructions for use of outdoor mounted;
2, casing adopts hermetically sealed design, dustproof, waterproof, antistatic and insulation; Be applicable to that environmental condition badly reaches low temp area.
3, can insert 6～24 road solar cell tandems simultaneously, every road electric current maximum can reach 15A;
4, the open-circuit voltage values of the maximum photovoltaic tandem of access can reach 1000V;
5, the withstand voltage of fuse is not less than DC1000V;
6, be furnished with photovoltaic special high-pressure lightning protection device, anodal negative pole all possesses lightning protection function;
7, the four-pole circuit breaker that adopts both positive and negative polarity to connect respectively improves the DC break down voltage value, and the dc voltage value that can bear is not less than DC1000V;
8, intelligent DC collection; Can realize electric current, the voltage acquisition of each tandem, power calculation;
9, PV group crosstalk ability quality analysis;
10, the 20 tunnel open into the amount collection; 4 road amounts of leaving; Realize remote signalling, distant control function;
11, nearly 500 of failure wave-recording functions, incident, record wavelength degree 200ms;
12, telecommunication; Carry RS485 and Ethernet (Ethernet) communication interface, the MODBUS agreement of electric power system 103 stipulations and standard.
The effect of the utility model header box is exactly with 6/8/12/16/24 battery pack string in each photovoltaic subsystem and connects that to converge be one the tunnel, the convenient photovoltaic DC-to-AC converter that inserts.Every string PV group string all passes through the special-purpose fuse of photovoltaic and protects before confluxing.
A critical function of header box is exactly the destruction of prevention induction thunder to solar cell, and header box adopts the lightning protection device of internationally renowned brand the battery pack string to be provided the lightning protection scheme of high reliability.This lightning protection device carries the warning node, cooperates the warning message of teletransmission lightning protection device with the intelligent cell in the header box.
Intelligent monitoring
1, group string DC quantity intelligent acquisition
PV group crosstalk stream I;
U is pressed in the crosstalk of PV group;
The energy output of V group string: P.
2, the crosstalk of PV group can quality analysis
The inner unit of header box can carry out power quality analysis to each group string that inserts, and calculates the working condition of this group string in real time, can draw out P-V curve and I-V curve through daemon software.
PV group crosstalk stream record statistics;
The record statistics is pressed in the crosstalk of PV group;
PV group string energy output record statistics.
3, remote signalling function
Header box can be realized 20 way switch amount collections, can be used to monitor the access state of the PV group string that inserts header box and the warning node of lightning protection device.
Switching value use DC 24V voltage open into, can open situation of change at background monitoring through the remote signalling function simultaneously into amount; In addition, all import every road all has the time constant filter of oneself (or being called the time of trembling that disappears, anti-trembling the time), and the scope that can be provided with is 0ms～50000ms, differential 1ms.Concrete settings is relevant with the minimum change time with signal maximum possible pace of change, and general switching value can be set to 20ms.
4, distant control function
Header box inside carries four tunnel remote controls outlet.The retention time of each remote control outlet can be provided with, and can realize the remote control of the circuit breaker in the return tank or the control of other automatic equipments.
5, failure wave-recording function
Header box has fault initiating record wave energy.The Starting mode of failure wave-recording is that definite value starts, the sudden change amount starts, opens into startup.Automatically record starts preceding two cycles, starts the data of back eight cycles.This device can be stored the fault initiating recorder data 500 times.Data content comprises that group crosstalk stream I, group crosstalk press real-time Simulation amount such as U and group string power and overcurrent starts, the sudden change amount starts.
6, PV group string burn out detection
The intelligent measurement and control unit that header box carries can be monitored the PV group string that inserts this header box, judges the group string that breaks down;
Criterion (is example with group string 1):
1) the group string confluxes voltage greater than the threshold voltage of pressure definite value is arranged;
2) group string 1 electric current I 1 is less than there not being stream threshold current ration.
7, temperature control
Consider photovoltaic plant is built sunny more, the area that the temperature difference is bigger so this intelligent measurement and control unit has increased temperature controlled function, can be controlled the heating of heater in the header box or stop heating according to ambient temperature automatically.
Criterion: when ambient temperature starts heater heats during less than the low temperature threshold temperature; When ambient temperature during greater than the low temperature threshold temperature heater stop heating.
8, telecommunication
Telecommunication can realize through serial ports or Ethernet.Optional MODBUS of serial communication stipulations and serial ports 103.
9, address is provided with explanation
The intelligent measurement and control unit address can be provided with through the CPU board toggle switch, and 1～7 of toggle switch is given tacit consent to communications parameter for communication for the 8th the position is set for the binary system address is provided with the position.
The acquiescence communications parameter is:
1) communication protocol: serial ports 103 stipulations;
2) communication speed: 9600bps.
More than show and described basic principle, principal character and the advantage of the utility model.The technical staff of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the specification that the utility model just is described; Under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various changes and modifications, and these variations and improvement all fall in the utility model scope that requires protection.The utility model requires protection range to be defined by appending claims and equivalent thereof.
Claims (1)
1. intelligent photovoltaic array lightning protection header box; Comprise cabinet shell; In cabinet shell, be provided with anodal fuse, negative pole fuse, anodal copper bar and negative pole copper bar; Said anodal fuse is connected in parallel through anodal copper bar; Said negative pole fuse is connected in parallel through the negative pole copper bar, it is characterized in that: also comprise dc circuit breaker, the output that confluxes, array electrical measurement plate, measurement and control unit and DC lightning prevention device, said anodal copper bar is connected with the output corresponding terminal that confluxes through dc circuit breaker with the negative pole copper bar; Between anodal fuse and anodal copper bar, be provided with array electrical measurement plate; Said array electrical measurement plate is connected with the measurement and control unit that is arranged on dc circuit breaker and conflux between the output, and said anodal copper bar is connected with the DC lightning prevention device with the negative pole copper bar, and said DC lightning prevention device is connected ground connection with the ground connection copper bar.
2, a kind of intelligent photovoltaic array lightning protection header box according to claim 1, it is characterized in that: also comprise lightning protection for power supply, said measurement and control unit is connected with lightning protection for power supply, and lightning protection for power supply is connected ground connection with the ground connection copper bar.
3, a kind of intelligent photovoltaic array lightning protection header box according to claim 2, it is characterized in that: anodal copper bar and negative pole copper bar are provided with the polymethyl methacrylate baffle plate.
4, a kind of intelligent photovoltaic array lightning protection header box according to claim 3 is characterized in that: said array electrical measurement plate adopts the Hall element plate.
5, a kind of intelligent photovoltaic array lightning protection header box according to claim 4; It is characterized in that: in cabinet shell, be provided with heater and temperature sensor; Said temperature sensor is connected with measurement and control unit, and said measurement and control unit also is connected with temperature sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204657512U CN202352696U (en) | 2011-11-22 | 2011-11-22 | Intelligent photovoltaic array lightning-proof combiner box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204657512U CN202352696U (en) | 2011-11-22 | 2011-11-22 | Intelligent photovoltaic array lightning-proof combiner box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202352696U true CN202352696U (en) | 2012-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204657512U Expired - Lifetime CN202352696U (en) | 2011-11-22 | 2011-11-22 | Intelligent photovoltaic array lightning-proof combiner box |
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| CN (1) | CN202352696U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103208750A (en) * | 2013-04-12 | 2013-07-17 | 中天光伏技术有限公司 | Photovoltaic lightning protection combiner box |
| CN104579157A (en) * | 2015-01-16 | 2015-04-29 | 苏州长风自动化科技有限公司 | Photovoltaic convergence box with lightning protection failure early warning function |
| CN106788219A (en) * | 2017-01-23 | 2017-05-31 | 沈小红 | A kind of photovoltaic generation header box |
| CN108879400A (en) * | 2018-07-26 | 2018-11-23 | 许继集团有限公司 | A kind of exchange header box |
-
2011
- 2011-11-22 CN CN2011204657512U patent/CN202352696U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103208750A (en) * | 2013-04-12 | 2013-07-17 | 中天光伏技术有限公司 | Photovoltaic lightning protection combiner box |
| CN104579157A (en) * | 2015-01-16 | 2015-04-29 | 苏州长风自动化科技有限公司 | Photovoltaic convergence box with lightning protection failure early warning function |
| CN106788219A (en) * | 2017-01-23 | 2017-05-31 | 沈小红 | A kind of photovoltaic generation header box |
| CN108879400A (en) * | 2018-07-26 | 2018-11-23 | 许继集团有限公司 | A kind of exchange header box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120725 |
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| CX01 | Expiry of patent term |