CN201556925U - Intelligent photovoltaic lightningproof header box - Google Patents
Intelligent photovoltaic lightningproof header box Download PDFInfo
- Publication number
- CN201556925U CN201556925U CN2009201645535U CN200920164553U CN201556925U CN 201556925 U CN201556925 U CN 201556925U CN 2009201645535 U CN2009201645535 U CN 2009201645535U CN 200920164553 U CN200920164553 U CN 200920164553U CN 201556925 U CN201556925 U CN 201556925U
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- Prior art keywords
- header box
- cell group
- photovoltaic
- circuit
- voltage
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Abstract
The utility model discloses an intelligent photovoltaic lightningproof header box, which mainly consists of a box body and a header circuit arranged therein, wherein an input loop of each solar photovoltaic cell group series in the header circuit is provided with a breaker, an overvoltage protection circuit and a current transducer; a converged bus output end is provided with a voltage transducer and a main breaker; simultaneously, the overvoltage protection circuit mainly consists of a pressure sensitive resistor with a failure warning switching point, and a discharge tube; and a current signal, a protection circuit failure warning signal and a voltage signal of each photovoltaic input loop are outputted to a long-distance terminal with an RS485 interface through an intelligent electric quantity transducer, so that the square matrix work status of each solar photovoltaic cell group series which is connected to the header box can be conveniently monitored on the long-distance terminal.
Description
[affiliated technical field]
The utility model relates to a kind of intelligent photovoltaic lightning protection header box that solar photovoltaic generation system is used; be used for the parallel connection of multichannel solar-energy photo-voltaic cell group string and conflux; the input circuit of each the road solar-energy photo-voltaic cell group string in the circuit of confluxing is provided with circuit breaker; excess voltage protection and current transducer; bus output after confluxing is provided with voltage transmitter and main circuit breaker; the current signal of each road photovoltaic input circuit; protective circuit failure alarm signal and voltage signal adopt the RS485 interface to output to the strange land terminal by intelligent power transmitter, just can easily monitor the operating state of each the photovoltaic group string square formation that is connected to header box on the terminal of strange land.
[background technology]
At present, the mode of confluxing that the solar photovoltaic generating system adopts mainly contains two classes, and the first kind is the mode of simply confluxing, and outputs to back level equipment by bus after each road solar-energy photo-voltaic cell group string only confluxes; Two classes are the modes of confluxing of band lightning protection function in addition, have increased the lightning protection device in the circuit that confluxes of each road solar-energy photo-voltaic cell group string; The header box of this dual mode only is applicable to small-scale photovoltaic generating system, can't realize monitoring and management to the overall optical photovoltaic generating system when larger.
[utility model content]
[purpose of utility model]
The purpose of this utility model provides a kind of intelligent photovoltaic lightning protection header box; the parallel connection that not only can finish the solar-energy photo-voltaic cell group string of in the photovoltaic generating system each road being imported is confluxed and the overvoltage lightning protection, can in time monitor the work running status of each solar photovoltaic battery component square formation in the photovoltaic generating system simultaneously by the terminal system in strange land.
[technical scheme]
The purpose of this utility model is achieved in that the input of each road solar-energy photo-voltaic cell group string is provided with circuit breaker, excess voltage protection and current transducer, bus output after confluxing is provided with voltage transmitter and main circuit breaker, excess voltage protection mainly is made up of varistor with fault alarm switching point and discharge tube, circuit is arranged to common mode and differential mode overvoltage protection, can the high voltage that produce because of thunder and lightning and electromagnetic interference effectively be suppressed, the safety of protection late-class circuit and equipment, and after the protective effect inefficacy takes place because of overvoltage varistor, therefore alarm switch point on the resistor can carry out corresponding action, and alarm switch point directly is connected on the switching value input port of intelligent power transmitter; In each road photovoltaic input circuit a current transducer is installed all, the output signal of current transducer directly is connected on the analog quantity input port of intelligent power transmitter; A voltage transmitter is installed on the bus after confluxing, and the output signal of voltage transmitter directly is connected on the analog quantity input port of intelligent power transmitter.Current signal, protective circuit failure alarm signal and voltage signals all in the header box adopt the RS485 interface to output to the strange land terminal by intelligent power transmitter, just can easily monitor the operating state of each the photovoltaic group string square formation that is connected to header box on the terminal of strange land.
[beneficial effect]
Owing to adopt such scheme; header box not only can be finished in the photovoltaic generating system parallel connection of the solar-energy photo-voltaic cell group string of each road input is confluxed and the overvoltage lightning protection; can can in time monitor simultaneously the work running status of each solar photovoltaic battery component square formation in the photovoltaic generating system by the terminal system in strange land; circuit is simple; reliable operation is easy to realize.
[description of drawings]
Below in conjunction with accompanying drawing the utility model is further specified.
Accompanying drawing is circuit theory diagrams of the present utility model.
In the drawings, PV solar-energy photo-voltaic cell group string input, K circuit breaker, R varistor, F discharge tube, CT1～CT3 current transducer, PT voltage transmitter, D isolating diode, DEC intelligent power transmitter, S varistor alarm switch point.
[embodiment]
In the drawings, survey maintenance safe for guaranteeing to detect, each road solar-energy photo-voltaic cell group string is imported the back by the bipolar device (K1～K3) be linked into the circuit that confluxes that breaks from (PV) port; Overvoltage crowbar is made up of piezo-resistance (R) and discharge tube (F), in first via solar-energy photo-voltaic cell group string input circuit, R1-1 and R1-2 constitute the common mode inhibition circuit, can the overvoltage of importing between solar-energy photo-voltaic cell group string both positive and negative polarity be suppressed and protect, R1-1, F1 and R1-2, F1 constitute differential mode respectively and suppress circuit, can to solar-energy photo-voltaic cell group string positive pole over the ground between and negative pole over the ground between the overvoltage of input suppress and protect, other each input circuit is identical therewith; After each road solar-energy photo-voltaic cell group string is linked into the circuit that confluxes, at first behind overvoltage crowbar, undertaken being linked into after current sample and diode (D) are isolated on the dc bus in the header box by current transducer (CT) again, voltage transmitter (PT) is installed, the direct voltage size on the bus that is used for sampling on dc bus; Outlet side at bus is provided with a main circuit breaker (K4), and the solar-energy photo-voltaic cell group string that each road is input to header box is input on the level equipment of back by main circuit breaker (K4) control after confluxing.Varistor in the circuit in the overvoltage crowbar (R) all adopts the device that has alarm switch point (S); the alarm switch point (S) of each varistor (R) all is connected on the corresponding switching value input port of intelligent power transmitter (DEC); after varistor (R) broke down because of the generation overvoltage protection, corresponding switching point (S) can move at once sent alarm signal.The voltage signal of each road current signal of each current transducer (CT) sampling and voltage transmitter (PT) sampling also all is connected on the corresponding analog quantity input port of intelligent power transmitter (DEC) in the circuit; the current signal of each road photovoltaic input circuit, protective circuit failure alarm signal and voltage signal adopt the RS485 interface to output to the strange land terminal by intelligent power transmitter (DEC), just can easily monitor the operating state of each the photovoltaic group string square formation that is connected to header box on the terminal system of strange land.Whole header box is simple in structure, and control stabilization is reliable, is easy to realize.
Claims (3)
1. intelligent photovoltaic lightning protection header box; be used for the parallel connection of photovoltaic generating system multichannel solar-energy photo-voltaic cell group string and conflux; it is characterized in that: the input of each road solar-energy photo-voltaic cell group string is provided with circuit breaker, excess voltage protection and current transducer, and the bus output after confluxing is provided with voltage transmitter and main circuit breaker.
2. a kind of intelligent photovoltaic lightning protection header box according to claim 1 is characterized in that: the current signal of each road photovoltaic input circuit, protective circuit failure alarm signal and voltage signal adopt the output of RS485 interface by intelligent power transmitter.
3. a kind of intelligent photovoltaic lightning protection header box according to claim 1, it is characterized in that: excess voltage protection mainly is made up of varistor with fault alarm switching point and discharge tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201645535U CN201556925U (en) | 2009-10-15 | 2009-10-15 | Intelligent photovoltaic lightningproof header box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201645535U CN201556925U (en) | 2009-10-15 | 2009-10-15 | Intelligent photovoltaic lightningproof header box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201556925U true CN201556925U (en) | 2010-08-18 |
Family
ID=42616615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201645535U Expired - Lifetime CN201556925U (en) | 2009-10-15 | 2009-10-15 | Intelligent photovoltaic lightningproof header box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201556925U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950956A (en) * | 2010-11-03 | 2011-01-19 | 英利能源（中国）有限公司 | Lightning-proof electric control device of photovoltaic power generation system |
| CN102157586A (en) * | 2011-03-03 | 2011-08-17 | 英利能源（中国）有限公司 | Photovoltaic assembly with lightning-protection device |
-
2009
- 2009-10-15 CN CN2009201645535U patent/CN201556925U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950956A (en) * | 2010-11-03 | 2011-01-19 | 英利能源（中国）有限公司 | Lightning-proof electric control device of photovoltaic power generation system |
| CN101950956B (en) * | 2010-11-03 | 2013-01-02 | 英利能源（中国）有限公司 | Lightning-proof electric control device of photovoltaic power generation system |
| CN102157586A (en) * | 2011-03-03 | 2011-08-17 | 英利能源（中国）有限公司 | Photovoltaic assembly with lightning-protection device |
| CN102157586B (en) * | 2011-03-03 | 2013-08-21 | 英利能源（中国）有限公司 | Photovoltaic assembly with lightning-protection device |
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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: 20100818 |
|
| CX01 | Expiry of patent term |