CN204068864U - A kind of semi-automatic photovoltaic module logging - Google Patents
A kind of semi-automatic photovoltaic module logging Download PDFInfo
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- CN204068864U CN204068864U CN201420570048.1U CN201420570048U CN204068864U CN 204068864 U CN204068864 U CN 204068864U CN 201420570048 U CN201420570048 U CN 201420570048U CN 204068864 U CN204068864 U CN 204068864U
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- 230000003287 optical effect Effects 0.000 description 7
- 238000010276 construction Methods 0.000 description 5
- 238000004891 communication Methods 0.000 description 3
- 206010014357 Electric shock Diseases 0.000 description 2
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- 238000004519 manufacturing process Methods 0.000 description 2
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- 238000005516 engineering process Methods 0.000 description 1
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The utility model discloses a kind of semi-automatic photovoltaic module logging, comprising: a first device and at least one second device, first device and at least one the second device are connected in series; First device comprises: power supply and mains switch, oscillator, frequency divider, address scrambler, address and power output interface, and the output of power supply and mains switch is connected with the power input of address scrambler respectively with oscillator, frequency divider; The output of frequency divider is connected by address scrambler one end with address and power output interface; The output of power supply and mains switch is connected with the other end of address and power output interface; Second device comprises: address and power input interface, address decoder, voltage comparator circuit, alarm, and the input of address decoder is connected with address and power output interface by address and power input interface; The output of address decoder is connected with alarm by voltage comparator circuit; Alarm comprises buzzer and LED.
Description
Technical field
The utility model relates to a kind of photovoltaic module voltage check device, particularly the semi-automatic photovoltaic module logging of one.
Background technology
Photovoltaic module is the very important element of photovoltaic plant, and its stable operation is the basic guarantee improving photovoltaic plant operation and generating efficiency, and the inspection method of current photovoltaic module can be divided into three classes substantially.
1, complete manual detection, when the voltage of photovoltaic module reduces to a certain extent, intelligent junction box will detect exception, and send warning, now attendant is according to the photovoltaic module string finding fault of reporting to the police, utilize voltage measurement instrument to search, do not adopt the power station of intelligent junction box, then need human at periodic intervals to detect.
2, the wired photovoltaic module logging using PHOTOMOS relay as switch is utilized to patrol and examine.Wired photovoltaic module logging photovoltaic module two ends is connected to photovoltaic module logging, logging automatic detecting, when the magnitude of voltage of photovoltaic module being detected lower than user's setting voltage value, sends warning.
3, utilize wireless optical photovoltaic assembly logging to patrol and examine, wireless optical photovoltaic assembly logging is directly installed on photovoltaic module at detecting sensor, wirelessly sends the information of voltage of photovoltaic module to communication management main frame.
But there is following problem in above-mentioned three kinds of detection methods of the prior art:
First method: when complete manual detection, needs frequent dismounting photovoltaic module or directly contacts with photovoltaic module, because the voltage of photovoltaic module string is generally between 300-1000V, therefore exists dangerous greatly.
Second method: will be connected on logging owing to needing the line at photovoltaic module two ends, and a photovoltaic module string has 10-30 photovoltaic module, cause the quantity of line very many, and due to photovoltaic module volume larger, photovoltaic module needs longer line to logging, cause logging itself to there is certain potential faults, too increase construction cost simultaneously.In addition, because photovoltaic module is distributed in outdoor, in time having any object to shut out the light, logging will be reported to the police, so there is the possibility of wrong report.
The third method: utilize wireless mode can solve wired logging cabling many, and the problem of complexity, but also bring some new problems simultaneously, one is that each transducer needs wireless transceiver, and this adds quite high cost undoubtedly; Two is because radio band belongs to public frequency band, adds disturbed possibility, have impact on communication robust and the safety of photovoltaic plant, in addition because the photovoltaic module wrong report caused that is blocked also cannot solve.
Utility model content
In order to solve the problem that the photovoltaic module voltage detecting danger existed in prior art is high, construction is complicated, the utility model proposes a kind of semi-automatic photovoltaic module logging.
Semi-automatic photovoltaic module logging of the present utility model, comprising: a first device and at least one second device, and first device and at least one the second device are connected in series;
First device comprises: power supply and mains switch, oscillator, frequency divider, address scrambler, address and power output interface, and the output of power supply and mains switch is connected with the power input of address scrambler respectively with oscillator, frequency divider; The output of frequency divider is connected by address scrambler one end with address and power output interface; The output of power supply and mains switch is connected with the other end of address and power output interface;
Second device comprises: address and power input interface, address decoder, voltage comparator circuit, alarm, and the input of address decoder is connected with address and power output interface by address and power input interface; The output of address decoder is connected with alarm by voltage comparator circuit; Alarm comprises buzzer and LED.
In technique scheme, the second device also comprises: address detection circuit, and address detection circuit comprises: the first resistance, the first optocoupler, address selector, and the negative pole of the first optocoupler is by the first grounding through resistance; The positive pole of the first optocoupler is connected with the output of address decoder by address selector; The emitter of the first optocoupler connects exterior light photovoltaic assembly;
Voltage comparator circuit comprises: the second resistance, the second optocoupler, and the collector electrode of the first optocoupler is connected with the negative pole of the second optocoupler by the second resistance; The positive pole of the second optocoupler connects exterior light photovoltaic assembly; The collector electrode of the second optocoupler is connected respectively with the positive source of the positive source of buzzer, LED.
In technique scheme, voltage comparator circuit also comprises: diode, and the negative pole of diode is connected with the second resistance; The positive pole of diode is connected with the negative pole of the second optocoupler.
In technique scheme, the second device also comprises: the 3rd resistance, the 4th resistance, triode, between the emitter that the 3rd resistance is connected to the second optocoupler and the base stage of triode;
The power cathode of buzzer is connected with the collector electrode of triode; 4th resistance is connected between the power cathode of LED and the collector electrode of triode; The direct ground connection of emitter of triode.
In technique scheme, address selector comprises: the first address selector and the second address selector, and address decoder comprises: the first address decoder and the second address decoder;
The output of the first address decoder is connected with the positive pole of the first optocoupler by the first address selector; The output of the second address decoder is connected with the positive pole of the first optocoupler by the second address selector.
In technique scheme, the second device also comprises: inverter, and one end of inverter is connected with the Enable Pin of the first address decoder, and the other end of inverter is connected with the Enable Pin of the second address decoder.
In technique scheme, address scrambler is 32 system address scramblers, and address decoder is 32 system address decoders.
In technique scheme, the first address decoder, the second address decoder are 4 line-16 line decoders; First address selector, the second address selector are No. 16 address selectors.
In technique scheme, address and the power input interface of the address of first device and power output interface and at least one the second device are connected by the cable with water joint.
Semi-automatic photovoltaic module logging of the present utility model, can when not dismantling photovoltaic module, automatic looking up the fault assembly, detection method is simple and reliable, avoid the dismounting photovoltaic module Danger Electric shock risk that may cause, and can the position of direct localizing faults photovoltaic module.Utilize common optical coupler as switch, second device 2 is directly installed on photovoltaic module, eliminate very many lines, greatly reduce manufacture and construction cost, and owing to being artificial and machine combination is patrolled and examined, there is not wrong report problem, can not interfere with each other with other equipment in power station yet, and there is obviously cost advantage.
Accompanying drawing explanation
Fig. 1 is the structure chart of semi-automatic photovoltaic module logging of the present utility model;
Fig. 2 is the structural representation of first device of the present utility model;
Fig. 3 is the structural representation of the second device of the present utility model;
Fig. 4 is the circuit theory diagrams of the second device of the present utility model.
Mark the following drawings mark thereon by reference to the accompanying drawings:
A-positive pole, K-negative pole, E-emitter, C-collector electrode; 211-first address decoder, 212-second address decoder, 221-buzzer, 222-LED lamp, 231-first address selector, 232-second address selector, 24-inverter, 26-photovoltaic component terminal box, 27-external cabling socket.
Embodiment
Below in conjunction with accompanying drawing, several embodiment of the present utility model is described in detail, but is to be understood that protection range of the present utility model not by the restriction of embodiment.
In order to solve the problem that the photovoltaic module voltage detecting danger existed in prior art is high, construction is complicated, the utility model proposes a kind of semi-automatic photovoltaic module logging.
As shown in Figure 1, semi-automatic photovoltaic module logging of the present utility model comprises: first device 1, second device 2, and first device 1 is connected with the second device 2, and first device 1 is mainly used in calculated address signal, and address signal is transferred to the second device 2, and provide working power for the second device 2.The photovoltaic component terminal box 26 of the second device 2 is connected with exterior light photovoltaic assembly, detects the voltage of outside photovoltaic module.Each second device 2 connects an exterior light photovoltaic assembly.
As shown in Figure 2, first device 1 comprises: power supply and mains switch 11, oscillator 12, frequency divider 13, address scrambler 14, address and power output interface 15, and the output of power supply and mains switch 11 is connected respectively with the power input of oscillator 12, frequency divider 13, address scrambler 14; The output of frequency divider 13 is connected with one end of address and power output interface 15 by address scrambler 14; The output of power supply and mains switch 11 is connected with the other end of address and power output interface 15.
Oscillator 12 is used to produce the electronic component repeating electronic signal (normally sinusoidal wave or square wave), frequency divider 13 converts the signal of telecommunication of 1hz to for the square wave exported by oscillator 12, encoder 14 be signal (as bit stream) or data are carried out work out, being converted to can in order to the element of the signal form of communication, transmission.After mains switch is opened, oscillator 12 exports the square wave of 32768hz, after frequency divider 13, become the signal of 1hz, then by address scrambler 14, continue to export 32 address signals to the second device 2 by address and power output interface 15 with the frequency of 1hz.Preferably, address scrambler 14 is 32 system address scramblers.
As shown in Figure 3 and Figure 4, the second device 2 comprises: (indicating with connector socket 27 in the utility model), address decoder 21, voltage comparator circuit, alarm 22, and alarm comprises buzzer 221 and LED 222.Address decoder 21 input is connected with address and power output interface 15 by address and power input interface 27; The output of address decoder 21 is connected with alarm 22 by voltage comparator circuit; Alarm 22 comprises buzzer 221 and LED 222.Preferably, the address of the address of first device and power output interface 15 and at least one the second device and power input interface 27 are connected by the cable with water joint.
Semi-automatic photovoltaic module logging of the present utility model, applies optical coupler (hereinafter referred to as optocoupler) in the second device 2, and optical coupler take light as the media transmission signal of telecommunication, has good buffer action to input, the output signal of telecommunication.Optical coupler is primarily of light-emitting diode and phototriode composition, and the negative or positive electrode of the following stated optocoupler refers to that the negative or positive electrode of optocoupler interior light emitting diodes, the collector electrode of optocoupler or emitter refer to collector electrode or the emitter of phototriode.
Preferably, also comprise: address detection circuit, this address detection circuit comprises: the first resistance R1, the first optocoupler OC1, address selector 23; Preferably, voltage comparator circuit 25 comprises: the second resistance R2, the second optocoupler OC2, diode D.The negative pole of the first optocoupler OC1 is by the first resistance R1 ground connection, positive pole is connected with the output of address decoder 21 by address selector 23, emitter connects the photovoltaic module of photovoltaic component terminal box 26, collector electrode is connected with the negative pole of the second optocoupler OC2 by the second resistance R2, diode, the negative pole of diode D is connected with the second resistance, and positive pole is connected with the negative pole of the second optocoupler OC2.
The positive pole of the second optocoupler OC2 connects the photovoltaic module of photovoltaic component terminal box 26, and collector electrode is connected respectively with the positive source of buzzer 221, the positive source of LED 222.Preferably, the second device 2 also comprises: the 3rd resistance R3, the 4th resistance R4, triode T, between the emitter that the 3rd resistance R3 is connected to the second optocoupler OC2 and the base stage of triode T; The power cathode of buzzer 221 is connected with the collector electrode of triode T; 4th resistance R4 is connected between the power cathode of LED 222 and the collector electrode of triode T; The direct ground connection of emitter of triode T; The positive source of the collector electrode of the second optocoupler OC2, the positive source of LED 222 and buzzer 221 is connected to VCC (supply voltage).
In the utility model, the qualified voltage threshold value of photovoltaic module can be pre-set, the resistance of the second resistance R2 is set accordingly, after the second resistance R2 shares portion voltage, if the electric current flowing through the light-emitting diode of the second optocoupler OC2 can make its conducting, due to Phototube Coupling and the Signal transmissions effect of optocoupler self, make phototriode conducting, and then drive buzzer 221 and LED 222 to work, namely illustrate that the input voltage of photovoltaic component terminal box 26 reaches predetermined voltage threshold; If the input voltage of photovoltaic component terminal box 26 does not reach predetermined voltage threshold, then the second optocoupler OC2 not conducting, buzzer 221 and LED 222 do not work.
Preferably, address selector 23 comprises: the first address selector 231 and the second address selector 232; Preferably, address decoder 21 comprises: the first address decoder 211 and the second address decoder 212.The output of the first address decoder 211 is connected with the positive pole of the first optocoupler OC1 by the first address selector 231; The output of the second address decoder 212 is connected with the positive pole of the first optocoupler OC1 by the second address selector 232.
Preferably, the second device 2 also comprises: inverter 24, and one end of inverter 24 connects the Enable Pin of the first address decoder 211, and the other end connects the Enable Pin of the second address decoder 212, and inverter 24 is also connected with external cabling socket 27.
Preferably, address decoder 21 is 32 system address decoders.Preferably, the first address decoder 211, second address decoder 212 is 4 line-16 line decoders; First address selector 231, second address selector 232 is No. 16 address selectors.
When the second device 2 receives the address signal that first device 1 sends, if detect that this address and the address of self are suitable, and photovoltaic module voltage reaches the voltage threshold preset, buzzer 221 is then driven to sound, lightening LED lamp 222, if photovoltaic voltage is reduced to below setting voltage threshold value, then buzzer 221 and LED 222 do not have any reaction.Specific works process is as follows:
When having detected that address signal inputs, this address signal has been selected to input the first address decoder 211 or the second address decoder 212 by inverter 24.The address decoder 21 of address signal input circulates and exports high level, the address information of setting address selector 23, when the address signal inputted is consistent with the address that address selector 23 sets, address selector 23 exports high level signal, because address selector 23 is connected with the first optocoupler OC1, the therefore emitter and collector conducting of the first optocoupler OC1.
Because the emitter of the first optocoupler OC1 is connected with photovoltaic component terminal box 26, the positive pole of the second optocoupler is also connected with photovoltaic component terminal box 26, the collector electrode of the first optocoupler OC1 is connected with the negative pole of the second optocoupler OC2 by the second resistance R2, therefore, when the voltage of photovoltaic module reaches the voltage threshold of setting, the both positive and negative polarity conducting of the second optocoupler OC2, drives emitter and collector conducting, and then buzzer 221 and LED 222 is worked; If the voltage of photovoltaic module does not reach the voltage threshold of setting, the second optocoupler OC2 not conducting, buzzer 221 and LED 222 do not work, and can filter out the underproof photovoltaic module of voltage fast, easily accordingly.
Semi-automatic photovoltaic module logging of the present utility model, can when not dismantling photovoltaic module, automatic looking up the fault assembly, detection method is simple and reliable, avoid the dismounting photovoltaic module Danger Electric shock risk that may cause, and can the position of direct localizing faults photovoltaic module.Utilize common optical coupler as switch, second device 2 is directly installed on photovoltaic module, eliminate very many lines, greatly reduce manufacture and construction cost, and owing to being artificial and machine combination is patrolled and examined, there is not wrong report problem, can not interfere with each other with other equipment in power station yet, and there is obviously cost advantage.
Be only several specific embodiment of the present utility model above, but the utility model is not limited thereto, the changes that any person skilled in the art can think of all should fall into protection range of the present utility model.
Claims (9)
1. a semi-automatic photovoltaic module logging, is characterized in that, comprising: a first device and at least one second device, and described first device and at least one second device described are connected in series;
Described first device comprises: power supply and mains switch, oscillator, frequency divider, address scrambler, address and power output interface, and the output of described power supply and mains switch is connected with the power input of described address scrambler respectively with described oscillator, described frequency divider; The output of described frequency divider is connected with one end of described address and power output interface by described address scrambler; The output of described power supply and mains switch is connected with the other end of described address and power output interface;
Described second device comprises: address and power input interface, address decoder, voltage comparator circuit, alarm, and the input of described address decoder is connected with described address and power output interface by described address and power input interface; The output of described address decoder is connected with described alarm by described voltage comparator circuit; Described alarm comprises buzzer and LED.
2. semi-automatic photovoltaic module logging according to claim 1, it is characterized in that, described second device also comprises address detection circuit, and described address detection circuit comprises: the first resistance, the first optocoupler, address selector, and the negative pole of described first optocoupler is by described first grounding through resistance; The positive pole of described first optocoupler is connected with the output of described address decoder by described address selector; The emitter of described first optocoupler connects exterior light photovoltaic assembly;
Described voltage comparator circuit comprises: the second resistance, the second optocoupler, and the collector electrode of described first optocoupler is connected with the negative pole of described second optocoupler by described second resistance; The positive pole of described second optocoupler connects exterior light photovoltaic assembly; The collector electrode of described second optocoupler is connected respectively with the positive source of the positive source of described buzzer, described LED.
3. semi-automatic photovoltaic module logging according to claim 2, it is characterized in that, described voltage comparator circuit also comprises: diode, and the negative pole of described diode is connected with described second resistance; The positive pole of described diode is connected with the negative pole of described second optocoupler.
4. semi-automatic photovoltaic module logging according to claim 3, it is characterized in that, described second device also comprises: the 3rd resistance, the 4th resistance, triode, between the emitter that described 3rd resistance is connected to described second optocoupler and the base stage of described triode;
The power cathode of described buzzer is connected with the collector electrode of described triode; Described 4th resistance is connected between the power cathode of described LED and the collector electrode of described triode; The direct ground connection of emitter of described triode.
5. semi-automatic photovoltaic module logging according to claim 4, it is characterized in that, described address selector comprises: the first address selector and the second address selector, and described address decoder comprises: the first address decoder and the second address decoder;
The output of described first address decoder is connected with the positive pole of described first optocoupler by described first address selector; The output of described second address decoder is connected with the positive pole of described first optocoupler by described second address selector.
6. semi-automatic photovoltaic module logging according to claim 5, it is characterized in that, described second device also comprises: inverter, one end of described inverter is connected with the Enable Pin of described first address decoder, and the other end of described inverter is connected with the Enable Pin of described second address decoder.
7. semi-automatic photovoltaic module logging according to claim 1, is characterized in that, described address scrambler is 32 system address scramblers, and described address decoder is 32 system address decoders.
8. semi-automatic photovoltaic module logging according to claim 5, is characterized in that, described first address decoder, described second address decoder are 4 line-16 line decoders; Described first address selector, described second address selector are No. 16 address selectors.
9. semi-automatic photovoltaic module logging according to claim 1, is characterized in that, address and the power input interface of the address of described first device and power output interface and at least one the second device described are connected by the cable with water joint.
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| CN201420570048.1U CN204068864U (en) | 2014-09-29 | 2014-09-29 | A kind of semi-automatic photovoltaic module logging |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111835283A (en) * | 2020-06-30 | 2020-10-27 | 文庭荣 | Instrument equipment for finding low-efficiency components of photovoltaic power station |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111835283A (en) * | 2020-06-30 | 2020-10-27 | 文庭荣 | Instrument equipment for finding low-efficiency components of photovoltaic power station |
| CN111835283B (en) * | 2020-06-30 | 2024-01-26 | 文庭荣 | Instrument and equipment for searching photovoltaic power station low-efficiency components |
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Granted publication date: 20141231 Termination date: 20200929 |