CN202309564U - Photovoltaic direct current converging device - Google Patents
Photovoltaic direct current converging device Download PDFInfo
- Publication number
- CN202309564U CN202309564U CN2011202904604U CN201120290460U CN202309564U CN 202309564 U CN202309564 U CN 202309564U CN 2011202904604 U CN2011202904604 U CN 2011202904604U CN 201120290460 U CN201120290460 U CN 201120290460U CN 202309564 U CN202309564 U CN 202309564U
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- photovoltaic
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- direct current
- current
- master controller
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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
Abstract
The utility model belongs to the technical field of solar electrical energy generation, and particularly relates to a photovoltaic direct current converging device. The device is used for decreasing cables connecting an inverter and photovoltaic modules in a large photovoltaic inversion device, facilitating maintenance of the photovoltaic modules and improving reliability of whole photovoltaic system. The device consists of an over-current protection unit, a current detecting unit, a countercurrent preventing unit, a direct current lightning protection unit, a voltage detecting unit, a direct current switch element and a main controller. Photovoltaic battery pack series-connection array direct current can be connected into the converging device to be converged, measurement and fault analysis and positioning are performed through an intelligentized measurement and control module, finally converted direct current passes through a lightning protection device and the breaker to be output and connected into the inverter, and signals are analyzed, sorted and then sent out by the main controller to be communicated with the outside.
Description
Technical field
The utility model belongs to the solar energy generation technology field, is specifically related to a kind of photovoltaic DC collector-shoe gear.
Background technology
Along with increasing the weight of day by day of global energy crisis and environmental pollution, the development and utilization of solar energy receives the generally attention of countries in the world, and solar energy resources is abundant, distribute extensively, can regenerate, free from environmental pollution, is the desirable alternative energy source that international community generally acknowledges.The production application of parallel network power generation equipment is generally risen in the whole world, and related accessory supporting with it and control device have also obtained development rapidly.The solar power generation grid-connecting system is a photovoltaic power generation grid-connecting equipment, is made up of solar cell serial array, photovoltaic DC collector-shoe gear, DC-AC inverter, AC distribution measurement mechanism and electrical network.The photovoltaic DC collector-shoe gear is exactly an important component part in the grid-connected photovoltaic system; This device can reduce the line between photovoltaic cell group serial array assembly and the photovoltaic DC-to-AC converter; Conveniently each road photovoltaic cell group serial array is safeguarded; And electric current, monitoring voltage are arranged and reach the external communication function, can in time give solar photovoltaic grid-connection generating equipment main frame with photovoltaic DC collector-shoe gear internal fault feedback information.
Summary of the invention
The purpose of a kind of photovoltaic DC collector-shoe gear of the utility model is to reduce the cable line between the inverter and photovoltaic module in the large-scale photovoltaic inversion system, convenient each road photovoltaic module is safeguarded, improves the reliability of whole photovoltaic system.
For achieving the above object; The technical scheme that the utility model adopted is: a kind of photovoltaic DC collector-shoe gear by over-current protecting unit, current detecting unit, prevent that adverse current unit, DC lightning prevention unit, voltage detection unit, dc switch element and master controller from forming; It is characterized in that: described over-current protecting unit is connected with the current detecting unit signal of telecommunication; Current detecting unit is connected with preventing adverse current unit, the master controller signal of telecommunication respectively; Prevent that the adverse current unit is connected with the DC lightning prevention unit signal of telecommunication; DC lightning prevention unit is connected with voltage detection unit, the master controller signal of telecommunication respectively, and voltage detection unit is connected with dc switch element, the master controller signal of telecommunication respectively.
The utility model can insert collector-shoe gear with each road photovoltaic cell group serial array direct current and conflux; And measure with accident analysis through the intelligent measurement and control module and to locate; Insert through output behind lightning protection device and the circuit breaker and inverter at last, and see off with the outside after through master controller signal analysis being put in order and carry out communication.
The utility model also has following technical characterictic:
1, degree of protection is IP65;
2, satisfy and to insert 8 tunnel solar panel strings simultaneously, have 8 align, negative terminals;
3, adopt dc fuse that every road photovoltaic group string is protected, fuse is withstand voltage to reach DC1000V;
4, adopt special-purpose lightning protection device satisfy anodal over the ground, negative pole over the ground, the lightning Protection between the both positive and negative polarity;
5, the level Four circuit breaker that uses both positive and negative polarity to connect respectively improves DC break down voltage;
6, adopt the intelligent measurement and control unit of integrated perforation wiring design; Can realize electric current, the voltage acquisition of 8 tandems; Power calculation; And can gather the quantity of state of lightning protection device, accomplish the function of photovoltaic group crosstalk stream monitoring, warning and local fault location, and communicate by letter with the local monitor device through RS485 or wireless telecommunications;
7, can realize the independent measurement of the photovoltaic array magnitude of current, data precision＜=0.5%;
8, analyze the magnitude of current, out of order photovoltaic array is reported to the police;
Report to the police thereby 9, can discern the fuse blows that the external environment condition working condition realizes the direct current collector-shoe gear, and deliver to local monitor system and upper level supervisory control system more.
Description of drawings
Fig. 1 photovoltaic power generation grid-connecting equipment principle block diagram
Fig. 2 photovoltaic DC collector-shoe gear is formed sketch map
Fig. 3 photovoltaic DC collector-shoe gear schematic diagram
Embodiment
1-3 specifically is further described the utility model below in conjunction with accompanying drawing:
A kind of photovoltaic DC collector-shoe gear it comprise over-current protecting unit, current detecting unit, prevent the adverse current unit, DC lightning prevention unit, voltage detection unit, dc switch element and master controller form; Described over-current protecting unit is connected with the current detecting unit signal of telecommunication; Current detecting unit is connected with preventing adverse current unit, the master controller signal of telecommunication respectively; Prevent that the adverse current unit is connected with the DC lightning prevention unit signal of telecommunication; DC lightning prevention unit is connected with voltage detection unit, the master controller signal of telecommunication respectively, and voltage detection unit is connected with dc switch element, the master controller signal of telecommunication respectively.The master controller of this device mainly is to adopt DSP control, can gather electric current, voltage, temperature and lightning protection signal in real time, can be in time fault-signal be uploaded to host computer and protects and show and report to the police in case produce this device of above-mentioned fault.This device can insert collector-shoe gear with 8 road photovoltaic cell group direct currents and conflux, and measures and the accident analysis location through the intelligent measurement and control module, at last through outputing to inverter behind lightning protection device and the circuit breaker.The utility model can insert collector-shoe gear with each road photovoltaic cell group serial array direct current and conflux; And measure with accident analysis through the intelligent measurement and control module and to locate; Insert through output behind lightning protection device and the dc switch element and inverter at last, and see off with the outside after through master controller signal analysis being put in order and carry out communication.
The groundwork principle of photovoltaic DC collector-shoe gear is:
1, overcurrent protection: the photovoltaic DC collector-shoe gear that is illustrated in figure 3 as the input of 8 road direct currents; Can satisfy and insert 8 tunnel solar panel strings simultaneously; Have 8 align, negative terminals, each road direct current positive input terminal all is provided with fuse, the current value of this fuse is 1.25 times of this short out road current value; Fuse is withstand voltage to reach DC1000V, in whole device, does overcurrent protection and uses.
2, prevent adverse current: in photovoltaic cell component; In order to prevent that the electric current that other solar cell loops and storage battery produce from flowing to this assembly; Use diode as preventing counterflow element at present; This prevents that counterflow element from having protected photovoltaic cell component greatly, prevents when photovoltaic cell component does not generate electricity the backflow of battery current.
3, electric current, voltage detecting: electric current, voltage detecting are accomplished through electric current, voltage hall sensor; Electric current, the detected signal of voltage hall sensor are connected the supervision and the demonstration that can realize each road electric current with master controller; Analyze the magnitude of current, out of order photovoltaic array is reported to the police, simultaneously also can be with signal through RS485 interface and external communication.
4, DC lightning prevention: the signal of telecommunication of DC lightning prevention unit is connected with master controller through shielding conductor respectively, and detection gained data can directly read in this locality, also can with outside real-time communication.Special-purpose lightning protection device uses the sensitive lightning protection component of high accuracy, can satisfy positive pole over the ground, negative pole over the ground, the lightning Protection between the both positive and negative polarity, the operate as normal of assurance photovoltaic DC collector-shoe gear.
5, master controller: the controlled function of master controller is mainly accomplished by dsp chip; This controller can be realized electric current, the voltage acquisition of 8 tunnel serial array; Power calculation; And can gather the lightning protection device quantity of state, accomplish the function of current monitoring, warning and the local fault location of photovoltaic cell group, and communicate by letter with the local monitor device through RS485.
Claims (1)
- A photovoltaic DC collector-shoe gear by over-current protecting unit, current detecting unit, prevent that adverse current unit, DC lightning prevention unit, voltage detection unit, dc switch element and master controller from forming; It is characterized in that: described over-current protecting unit is connected with the current detecting unit signal of telecommunication; Current detecting unit is connected with preventing adverse current unit, the master controller signal of telecommunication respectively; Prevent that the adverse current unit is connected with the DC lightning prevention unit signal of telecommunication; DC lightning prevention unit is connected with voltage detection unit, the master controller signal of telecommunication respectively, and voltage detection unit is connected with dc switch element, the master controller signal of telecommunication respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202904604U CN202309564U (en) | 2011-08-11 | 2011-08-11 | Photovoltaic direct current converging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202904604U CN202309564U (en) | 2011-08-11 | 2011-08-11 | Photovoltaic direct current converging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202309564U true CN202309564U (en) | 2012-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202904604U Expired - Fee Related CN202309564U (en) | 2011-08-11 | 2011-08-11 | Photovoltaic direct current converging device |
Country Status (1)
| Country | Link |
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| CN (1) | CN202309564U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102868179A (en) * | 2012-09-25 | 2013-01-09 | 合肥国润智能电气技术有限公司 | Solar anti-interference and anti-reflux unidirectional shielding system |
| CN103267889A (en) * | 2013-06-05 | 2013-08-28 | 温州科宇电器有限公司 | Novel intelligent photovoltaic confluence device |
| TWI555304B (en) * | 2012-07-19 | 2016-10-21 | 達方電子股份有限公司 | Power trimmer for photovoltaic power system and method of operating a power trimmer |
-
2011
- 2011-08-11 CN CN2011202904604U patent/CN202309564U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI555304B (en) * | 2012-07-19 | 2016-10-21 | 達方電子股份有限公司 | Power trimmer for photovoltaic power system and method of operating a power trimmer |
| CN102868179A (en) * | 2012-09-25 | 2013-01-09 | 合肥国润智能电气技术有限公司 | Solar anti-interference and anti-reflux unidirectional shielding system |
| CN103267889A (en) * | 2013-06-05 | 2013-08-28 | 温州科宇电器有限公司 | Novel intelligent photovoltaic confluence device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HARBIN JIUZHOU ELECTRICAL TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: JIUZHOU ELECTRIC CO LTD, HARBIN Effective date: 20120813 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 150081 HARBIN, HEILONGJIANG PROVINCE TO: 150028 HARBIN, HEILONGJIANG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120813 Address after: 150028, No. 1, unit D43, building -29, phase three, Shimao new town, Songbei, Harbin, Heilongjiang, Binjiang Patentee after: Harbin Jiuzhou Electrical Technology Co.,Ltd. Address before: 150081 Heilongjiang Province, Harbin city Nangang District haping Road No. 162 Patentee before: Jiuzhou Electric Co., Ltd., Harbin |
|
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Han Hongchen Document name: payment instructions |
|
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Han Hongchen Document name: Notice of termination of patent right |
|
| 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: 20120704 Termination date: 20200811 |