CN205092823U - Photovoltaic power generation prevents return flow device - Google Patents
Photovoltaic power generation prevents return flow device Download PDFInfo
- Publication number
- CN205092823U CN205092823U CN201520809801.2U CN201520809801U CN205092823U CN 205092823 U CN205092823 U CN 205092823U CN 201520809801 U CN201520809801 U CN 201520809801U CN 205092823 U CN205092823 U CN 205092823U
- Authority
- CN
- China
- Prior art keywords
- circuit breaker
- photovoltaic generation
- photovoltaic
- generation anti
- backflow device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Abstract
The utility model discloses a photovoltaic power generation prevents return flow device, photovoltaic power generation system pass through photovoltaic power generation prevents return flow device and are connected with load end and public power grid respectively, photovoltaic power generation prevents return flow device includes photovoltaic inverter, prevent controller, circuit breaker no. 1 and test section against the current, and photovoltaic power generation system and photovoltaic inverter are connected, photovoltaic inverter with prevent controller both way junction against the current, prevent the adverse current controller and be connected with circuit breaker no. 1 that circuit breaker no. 1 passes through isolation transformer and is connected with public power grid, photovoltaic power generation system is connected with the input power detection controller of test section, the load end is connected with the load power detection controller of test section, the current transformer of the contrary power detection controller of test section connects between circuit breaker no. 1 and isolation transformer. When the scheme is adopted, the utility model discloses simple structure, simple to operate, reduce cost, response speed is fast, and control is timely, and the real -time is good to but the access network, the convenience is controlled in the teleprocessing, has fine market using value.
Description
Technical field
The utility model relates to solar energy power generating field, in particular, and a kind of photovoltaic generation anti-backflow device.
Background technology
Usual complete set independently photovoltaic generating system comprises: photovoltaic module, photovoltaic controller, storage battery, photovoltaic DC-to-AC converter.This cover system can only realize islet operation, unnecessary electricity can not be delivered on public electric wire net, simultaneously due to Cost Problems storage battery can not join excessive, domestic lighting electricity consumption requirement can only be met.If adopt the small-sized inverter (power is at 2 ~ 5KVA) with grid-connected function.Just can join storage battery and photovoltaic controller (for controlling accumulator cell charging and discharging), and by daytime electricity except family expenses, unnecessary electricity is also stored on public network by inversion, night, switching public network was to domestic power again, and so namely escapable cost also can meet the electricity requirement of household electricity; But, parallel networking type photovoltaic electricity generation system except photovoltaic module, outside parallel networking type photovoltaic inverter, also to comprise conflux, DC cabinet, interchange grid-connection cabinet, bidirectional measuring kilowatt-hour meter etc.The each component spread of this cover system is installed, cabling disunity, installs complicated, inconvenient, and higher to the professional requirement of installation personnel, and the cost of each parts is higher.Family expenses parallel networking type photovoltaic electricity generation system is made to be difficult to penetration and promotion.Therefore, prior art existing defects, needs to improve.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of novel photovoltaic generation anti-backflow device.
For achieving the above object, the utility model have employed following technical scheme: a kind of photovoltaic generation anti-backflow device, photovoltaic generating system is connected with load end and public electric wire net respectively by photovoltaic generation anti-backflow device; Described photovoltaic generation anti-backflow device comprises photovoltaic DC-to-AC converter, Anti-reflux controller, circuit breaker one and test section, described photovoltaic generating system is connected with photovoltaic DC-to-AC converter, described photovoltaic DC-to-AC converter and Anti-reflux controller are bi-directionally connected, described Anti-reflux controller is connected with circuit breaker one, described circuit breaker one is connected with public electric wire net by isolating transformer, and described circuit breaker one is also connected with load end; Described test section comprises input power detection control device, inverse probability detection control device, bearing power detection control device and processor, described photovoltaic generating system is connected with input power detection control device, and the output of described input power detection control device is connected with the input of processor; Described load end is connected with bearing power detection control device, and the output of described bearing power detection control device is connected with the input of processor; The current transformer of described inverse probability detection control device is connected between circuit breaker one and isolating transformer, and the output of described inverse probability detection control device is connected with the input of processor.
Preferably, in described photovoltaic generation anti-backflow device, described photovoltaic generation anti-backflow device also comprises radio communication unit, described Anti-reflux controller, processor are connected with radio communication unit respectively, and described photovoltaic generation anti-backflow device is connected with remote control terminal by radio communication unit access network.
Preferably, in described photovoltaic generation anti-backflow device, described photovoltaic generation anti-backflow device also comprises circuit breaker two, and described circuit breaker one is connected with load end by circuit breaker two.
Preferably, in described photovoltaic generation anti-backflow device, the network of described radio communication unit access is that the mobile network of mobile phone operators is or/and the Internet.
Preferably, in described photovoltaic generation anti-backflow device, described test section is also provided with audible-visual annunciator, and described audible-visual annunciator is connected with processor.
Preferably, in described photovoltaic generation anti-backflow device, described photovoltaic generation anti-backflow device also comprises unidirectional electric energy metering device, and described unidirectional electric energy metering device is arranged between circuit breaker one and circuit breaker two.
Preferably, in described photovoltaic generation anti-backflow device, described audible-visual annunciator comprises DC-DC power source, control circuit, LED alarm lamp, buzzer, oscillating circuit, voltage stabilizing circuit and regulating circuit; Described DC-DC power source is connected with buzzer with LED alarm lamp by control circuit; Described voltage stabilizing circuit is connected with the timer of oscillating circuit with DC-DC power source; Described oscillating circuit is connected with buzzer with LED alarm lamp respectively; Described regulating circuit is connected with buzzer with voltage stabilizing circuit respectively.
Preferably, in described photovoltaic generation anti-backflow device, described remote control terminal is mobile terminal or PC end.
Preferably, in described photovoltaic generation anti-backflow device, the processor of described test section is ARM9 processor; Described circuit breaker one is three-phase alternating current circuit breaker with circuit breaker two.
Preferably, in described photovoltaic generation anti-backflow device, also comprise grid-connected distributing box, described photovoltaic generation anti-backflow device is arranged in grid-connected distributing box.
Relative to the beneficial effect of prior art be, adopt such scheme, each for photovoltaic generation anti-backflow device parts concentrate in a casing by the utility model, not only simplify installation, the professional technique of the workmen reduced requires and engineering difficulty, also reduces the cost of whole system; This photovoltaic generation anti-backflow device fast response time, control in time, real-time is good, and accessible network, teleprocessing, manipulation is convenient, makes whole system more economical, has good market using value.
Accompanying drawing explanation
Fig. 1 is one of structured flowchart of an embodiment of the present utility model;
Fig. 2 is the structured flowchart two of Fig. 1 embodiment of the present utility model.
Embodiment
For the ease of understanding the utility model, below in conjunction with the drawings and specific embodiments, the utility model is described in detail.Preferred embodiment of the present utility model is given in accompanying drawing.But the utility model can realize in many different forms, is not limited to the embodiment described by this specification.On the contrary, provide the object of these embodiments be make the understanding of disclosure of the present utility model more comprehensively thorough.
It should be noted that, when element is called as " being fixed on " another element, directly can there is element placed in the middle in it on another element or also.When an element is considered to " connection " another element, it can be directly connected to another element or may there is centering elements simultaneously.The term that this specification uses " is bi-directionally connected ", "left", "right" and similar statement just for illustrative purposes.
Unless otherwise defined, all technology of using of this specification and scientific terminology are identical with belonging to the implication that those skilled in the art of the present utility model understand usually.The object of the term used in specification of the present utility model in this specification just in order to describe specific embodiment is not for limiting the utility model.The term "and/or" that this specification uses comprises arbitrary and all combinations of one or more relevant Listed Items.
As shown in Figure 1 and Figure 2, an embodiment of the present utility model is, this photovoltaic generation anti-backflow device, and photovoltaic generating system 1 is connected with load end 7 and public electric wire net 8 respectively by photovoltaic generation anti-backflow device;
Described photovoltaic generation anti-backflow device comprises photovoltaic DC-to-AC converter 2, Anti-reflux controller 3, circuit breaker 1 and test section, described photovoltaic generating system 1 is connected with photovoltaic DC-to-AC converter 2, described photovoltaic DC-to-AC converter 2 is bi-directionally connected with Anti-reflux controller 3, described Anti-reflux controller 3 is connected with circuit breaker 1, described circuit breaker 1 is connected with public electric wire net 8 by isolating transformer 9, and described circuit breaker 1 is also connected with load end 7; Preferably, described photovoltaic generation anti-backflow device also comprises circuit breaker 26, and described circuit breaker one is connected with load end by circuit breaker two.Preferably, described circuit breaker one is three-phase alternating current circuit breaker with circuit breaker two.Preferably, the communication interface that described photovoltaic DC-to-AC converter and Anti-reflux controller are bi-directionally connected is RS485.Preferably, described photovoltaic generation anti-backflow device also comprises unidirectional electric energy metering device 5, and described unidirectional electric energy metering device 5 is arranged between circuit breaker 1 and circuit breaker 26.Adopt parallel networking type photovoltaic inverter, remove storage battery and photovoltaic controller, and by daytime electricity except the load end of this locality, unnecessary electricity is also stored on public electric wire net by inversion, night, switching public electric wire net was powered again, and so namely escapable cost also can meet the electricity requirement of household electricity.
Described test section comprises input power detection control device 13, inverse probability detection control device 11, bearing power detection control device 12 and processor 10, described photovoltaic generating system 1 is connected with input power detection control device 13, and the output of described input power detection control device 13 is connected with the input of processor 10; Described load end 7 is connected with bearing power detection control device 12, and the output of described bearing power detection control device 12 is connected with the input of processor 10; The current transformer 111 of described inverse probability detection control device 11 is connected between circuit breaker 1 and isolating transformer 9, and the output of described inverse probability detection control device is connected with the input of processor.Described processor is also connected with Anti-reflux controller.Preferably, input power detection control device gathers actual output voltage and the output current of photovoltaic generating system, and reference voltage level when calculating current maximum power point, contrast with reference to magnitude of voltage and actual output voltage value, calculated difference, and export data to processor; Bearing power detection control device for obtaining real-time bearing power, and exports data to processor; The current transformer of inverse probability detection control device gathers the output current of photovoltaic DC-to-AC converter, and inverse probability detection control device also detects the line voltage of isolating transformer input, and transfers to processor by detecting the information about power obtained; The difference of processor computational load power and photovoltaic generation power, meanwhile, feeds back to Anti-reflux controller by result of calculation.The output valve of Anti-reflux controller, for judging whether photovoltaic inverter system backflow phenomena occurs, when there is backflow phenomena, is set to 0, cut-off breaker one by described Anti-reflux controller; When there is not backflow phenomena in photovoltaic inverter system, judge whether photovoltaic inverter system has adverse current trend, if photovoltaic inverter system has adverse current trend, described Anti-reflux controller falls Power Processing to photovoltaic DC-to-AC converter, if photovoltaic DC-to-AC converter does not have adverse current trend, terminate the control to photovoltaic DC-to-AC converter.Preferably, the processor of described test section is ARM9 processor.
Preferably, in described photovoltaic generation anti-backflow device, described photovoltaic generation anti-backflow device also comprises radio communication unit 22, described Anti-reflux controller 3, processor 10 are connected with radio communication unit 22 respectively, and described photovoltaic generation anti-backflow device is connected with remote control terminal 24 by radio communication unit 22 access network 34.Preferably, the network of radio communication unit access is that the mobile network of mobile phone operators is or/and the Internet.Preferably, described remote control terminal is mobile terminal or PC end.Preferably, processor is by the difference of computational load power and photovoltaic generation power, generate data, the PC as remote control terminal is imported into by radio communication unit, staff is by PC input control signal, and then regulation and control photovoltaic generation anti-backflow device, simultaneously, the result of calculation of processor can be stored at PC, to back up.Preferably, import the data of PC into, in a tabular form record, such as, comprise the difference etc. of date, time, bearing power and photovoltaic generation power, being convenient to the later stage checks.Preferably, processor can every certain hour secondary data last time one, e.g., and 30 minutes, 36 minutes, 1 hour, 2 hours etc.
Preferably, described test section is also provided with audible-visual annunciator 21, and described audible-visual annunciator 21 is connected with processor 10.Preferably, described audible-visual annunciator comprises DC-DC power source, control circuit, LED alarm lamp, buzzer, oscillating circuit, voltage stabilizing circuit and regulating circuit; Described DC-DC power source is connected with buzzer with LED alarm lamp by control circuit, for LED alarm lamp and buzzer are powered; Described voltage stabilizing circuit is connected with the timer of oscillating circuit with DC-DC power source, and the timer for oscillating circuit provides stable voltage; Described oscillating circuit is connected with buzzer with LED alarm lamp respectively, and control LED alarm lamp and buzzer send intermittent alarm signal; Described regulating circuit is connected with buzzer with voltage stabilizing circuit respectively, can regulate the supply power voltage of buzzer, thus controls the volume of buzzer, and this acousto-optic alarm structure is simple, easy to use.When input power detection control device, inverse probability detection control device, bearing power detection control device detect and occur abnormal, processor signal transmission, to audible-visual annunciator, is given the alarm by audible-visual annunciator, is convenient to user and knows, to process as early as possible; Further, audible-visual annunciator is also connected with Anti-reflux controller, and when there is backflow phenomena, Anti-reflux controller signal transmission, to audible-visual annunciator, is given the alarm by audible-visual annunciator, is convenient to user and knows, to process as early as possible.
Preferably, in described photovoltaic generation anti-backflow device, also comprise grid-connected distributing box, described photovoltaic generation anti-backflow device is arranged in grid-connected distributing box.Preferably, described grid-connected distributing box comprises chamber door panel, backplate, Left-Hand Panel, right panel, top panel and bottom panel, described chamber door panel, described backplate, described Left-Hand Panel, described right panel, each side of described top panel and described bottom panel has multiple flanging respectively, adjacent multiple flanging between each panel is equipped with respectively, described Left-Hand Panel, described right panel, removably connected by casing angle connector between described top panel and described bottom panel, the interior angle place that the multiple flanging of described chamber door panel is formed is provided with chamber door angle connector, the side of described chamber door panel is detachably rotationally connected by rotating shaft connector and described Left-Hand Panel or right panel, described backplate is by described casing angle connector and described Left-Hand Panel, described right panel, described top panel and described bottom panel removably connect.Concentrated in a casing by each for photovoltaic generation anti-backflow device parts, not only simplify installation, the professional technique of the workmen reduced requires and engineering difficulty, also reduces the cost of whole system, makes whole system more economical, have good economic benefit.
It should be noted that, above-mentioned each technical characteristic continues combination mutually, is formed not in above-named various embodiment, is all considered as the scope that the utility model specification is recorded; Further, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection range that all should belong to the utility model claims.
Claims (10)
1. a photovoltaic generation anti-backflow device, photovoltaic generating system is connected with load end and public electric wire net respectively by photovoltaic generation anti-backflow device; It is characterized in that, described photovoltaic generation anti-backflow device comprises photovoltaic DC-to-AC converter, Anti-reflux controller, circuit breaker one and test section, described photovoltaic generating system is connected with photovoltaic DC-to-AC converter, described photovoltaic DC-to-AC converter and Anti-reflux controller are bi-directionally connected, described Anti-reflux controller is connected with circuit breaker one, described circuit breaker one is connected with public electric wire net by isolating transformer, and described circuit breaker one is also connected with load end; Described test section comprises input power detection control device, inverse probability detection control device, bearing power detection control device and processor, described photovoltaic generating system is connected with input power detection control device, and the output of described input power detection control device is connected with the input of processor; Described load end is connected with bearing power detection control device, and the output of described bearing power detection control device is connected with the input of processor; The current transformer of described inverse probability detection control device is connected between circuit breaker one and isolating transformer, and the output of described inverse probability detection control device is connected with the input of processor.
2. photovoltaic generation anti-backflow device according to claim 1, it is characterized in that, described photovoltaic generation anti-backflow device also comprises radio communication unit, described Anti-reflux controller, processor are connected with radio communication unit respectively, and described photovoltaic generation anti-backflow device is connected with remote control terminal by radio communication unit access network.
3. photovoltaic generation anti-backflow device according to claim 2, is characterized in that, described photovoltaic generation anti-backflow device also comprises circuit breaker two, and described circuit breaker one is connected with load end by circuit breaker two.
4. photovoltaic generation anti-backflow device according to claim 3, is characterized in that, the network of described radio communication unit access is that the mobile network of mobile phone operators is or/and the Internet.
5. photovoltaic generation anti-backflow device according to claim 3, is characterized in that, described test section is also provided with audible-visual annunciator, and described audible-visual annunciator is connected with processor.
6. photovoltaic generation anti-backflow device according to claim 3, is characterized in that, described photovoltaic generation anti-backflow device also comprises unidirectional electric energy metering device, and described unidirectional electric energy metering device is arranged between circuit breaker one and circuit breaker two.
7. photovoltaic generation anti-backflow device according to claim 5, is characterized in that, described audible-visual annunciator comprises DC-DC power source, control circuit, LED alarm lamp, buzzer, oscillating circuit, voltage stabilizing circuit and regulating circuit; Described DC-DC power source is connected with buzzer with LED alarm lamp by control circuit; Described voltage stabilizing circuit is connected with the timer of oscillating circuit with DC-DC power source; Described oscillating circuit is connected with buzzer with LED alarm lamp respectively; Described regulating circuit is connected with buzzer with voltage stabilizing circuit respectively.
8. photovoltaic generation anti-backflow device according to claim 5, is characterized in that, described remote control terminal is mobile terminal or PC end.
9. photovoltaic generation anti-backflow device according to claim 5, is characterized in that, the processor of described test section is ARM9 processor; Described circuit breaker one is three-phase alternating current circuit breaker with circuit breaker two.
10., according to the arbitrary described photovoltaic generation anti-backflow device of claim 1-9, it is characterized in that, also comprise grid-connected distributing box, described photovoltaic generation anti-backflow device is arranged in grid-connected distributing box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520809801.2U CN205092823U (en) | 2015-10-20 | 2015-10-20 | Photovoltaic power generation prevents return flow device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520809801.2U CN205092823U (en) | 2015-10-20 | 2015-10-20 | Photovoltaic power generation prevents return flow device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205092823U true CN205092823U (en) | 2016-03-16 |
Family
ID=55483473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520809801.2U Expired - Fee Related CN205092823U (en) | 2015-10-20 | 2015-10-20 | Photovoltaic power generation prevents return flow device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205092823U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110970929A (en) * | 2019-12-19 | 2020-04-07 | 无锡科能达自动化科技有限公司 | Spontaneous self-use type distributed photovoltaic power station reverse power control module, method and system |
| CN117607601A (en) * | 2024-01-24 | 2024-02-27 | 苏州腾圣技术有限公司 | Testing device for anti-countercurrent test of grid-connected inverter |
-
2015
- 2015-10-20 CN CN201520809801.2U patent/CN205092823U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110970929A (en) * | 2019-12-19 | 2020-04-07 | 无锡科能达自动化科技有限公司 | Spontaneous self-use type distributed photovoltaic power station reverse power control module, method and system |
| CN110970929B (en) * | 2019-12-19 | 2021-04-20 | 无锡科能达自动化科技有限公司 | Spontaneous self-use type distributed photovoltaic power station reverse power control module, method and system |
| CN117607601A (en) * | 2024-01-24 | 2024-02-27 | 苏州腾圣技术有限公司 | Testing device for anti-countercurrent test of grid-connected inverter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9118213B2 (en) | Portal for harvesting energy from distributed electrical power sources | |
| US8259478B2 (en) | Power inverter | |
| CN203367669U (en) | Intelligent socket device based on power line carrier communication | |
| JP2012244665A (en) | Energy management system | |
| US10630076B2 (en) | Electrical energy storage device and system | |
| KR100716537B1 (en) | control module for distributed generation energy source and method thereof | |
| CN204156804U (en) | A kind of novel household distributed solar energy electrification energy storage system | |
| CN205092823U (en) | Photovoltaic power generation prevents return flow device | |
| JP2015015800A (en) | Control device, and power management system | |
| CN201392462Y (en) | Energy-saving switch device | |
| CN204559217U (en) | A kind of Novel direct-current power system | |
| CN203491708U (en) | AC-DC intelligent allocating energy-storage current commutation apparatus | |
| CN106160196B (en) | Uninterrupted power supply system of intermittent power supply concentrator of distribution transformer | |
| CN202330594U (en) | Computer program-controlled testing platform for intelligent distribution transformer terminal | |
| CN204142798U (en) | Multifunctional intellectual ammeter box | |
| CN203561870U (en) | Demand response-based response equipment having pluggable control module | |
| KR20120074594A (en) | Photovoltaic power generation system | |
| CN204498006U (en) | Novel intelligent power supply | |
| CN103683998A (en) | Method and device for reducing nighttime power consumption of photovoltaic inverter | |
| CN203859514U (en) | Distributed green-energy power supply and distribution and intelligent household informationalized control cabinet system for dwellings | |
| CN103683323B (en) | The integrated grid-connecting apparatus of a kind of family expenses microgrid | |
| CN220510782U (en) | Low-voltage compensation and new energy access integrated power distribution cabinet | |
| CN206302162U (en) | A kind of home intelligent is used electricity in off-peak hours system | |
| CN204243895U (en) | Intelligent micro direct current operative power source | |
| CN204168206U (en) | Lithium battery light storage electricity generation system inverter circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160316 Termination date: 20171020 |