CN201946993U - Protective device for solar energy photovoltaic grid-connection inverter - Google Patents
Protective device for solar energy photovoltaic grid-connection inverter Download PDFInfo
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- CN201946993U CN201946993U CN2011200313811U CN201120031381U CN201946993U CN 201946993 U CN201946993 U CN 201946993U CN 2011200313811 U CN2011200313811 U CN 2011200313811U CN 201120031381 U CN201120031381 U CN 201120031381U CN 201946993 U CN201946993 U CN 201946993U
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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
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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Abstract
The utility model discloses a protective device for solar energy photovoltaic grid-connection inverter in the technical field of solar energy power generating devices, which comprises an array of solar energy photovoltaic cells, DC conversion units connected to the former. The DC conversion unit is connected to the inverter unit, which in turn connects the output controlling unit. The output controlling unit is connected with the power grid. The DC conversion unit, output controlling unit are connected with the data collecting unit, whose output terminal is connected to the input end of data processing unit. The output end of the data processing unit is connected to the CPU. The CPU connects the inverter unit and human-computer interface display. The human-computer interface display is bidirectional communicable with the DC conversion unit, is the object of the invention to resolves the problems of under-voltage, over-voltage and over-current, so that the transmission of electric power can become more stable and can be used in the grid-connected solar energy photovoltaic power generation.
Description
Technical field
The utility model relates to a kind of device of solar generating, particularly a kind of solar photovoltaic interconnected inverter protective device.
Background technology
Along with development of modern industry, global energy crisis and atmosphere polluting problem become increasingly conspicuous, and traditional fuel energy reduces day by day, and the harm that environment is caused becomes increasingly conspicuous, and the whole world has 2,000,000,000 people to can not get normal energy supply approximately simultaneously; Seek new regenerative resource, change human energy resource structure, keep long-range sustainable development, become the focus that people pay attention to; Photovoltaic is the most wide a kind of of application prospect in the various new forms of energy; the solar photovoltaic grid-connection generating both can alleviate the pressure of energy crisis, the power tense of alleviation time to peak; can protect environment again, improve environment, be the important content that is subjected to the long-term energy strategy of multinational government support.The solar photovoltaic grid-connection generating belongs to the starting stage in China, in the prior art, during solar energy grid-connected photovoltaic system work, the solar energy photovoltaic array is converted into direct current with the sunlight of gathering, direct current is converted into alternating current through inverter and is transported on the electrical network through o controller, use for load, its weak point is: because the output electric energy of solar energy photovoltaic array is relevant with the power of solar irradiation, and its state is the process that a dynamic change replaces, so easily damage because of under-voltage, overvoltage, overcurrent cause inverter at the transmission course inverter of electric energy.
The utility model content
The purpose of this utility model is to provide a kind of solar photovoltaic interconnected inverter protective device, makes whole transmission course safety and stability more.
For solving above technical problem; the utility model provides the solar photovoltaic interconnected inverter protective device; comprise the solar energy photovoltaic array; described solar energy photovoltaic array links to each other with the DC converting unit; described DC converting unit links to each other with inversion unit; described inversion unit links to each other with output control unit; described output control unit links to each other with electrical network; described DC converting unit; output control unit all links to each other with the data sampling unit; described data sampling unit output links to each other with the data processing unit input; described data processing unit output links to each other with CPU; described CPU respectively with inversion unit; show that man-machine interface links to each other described demonstration man-machine interface and DC converting unit diconnected.
During the utility model work, photovoltaic battery panel in the solar energy photovoltaic array absorbs luminous energy and produces photovoltaic effect, with conversion of solar energy is that low-voltage DC flows to the DC converting unit, the DC converting unit raises into the low-voltage DC in the photovoltaic array high voltage direct current and flows to inversion unit, inversion unit is reverse into High Level AC Voltage with high voltage direct current and sends electrical network to through output control unit again and use for AC load, the energy data output that DC converting unit and output control unit are gathered in the data sampling unit is transferred to data processing unit, after the data processing unit computing, deliver to CPU, CPU controls the break-make of inversion unit according to the feature of signal, and send corresponding instruction to showing man-machine interface, show that man-machine interface can read and output signal to the DC converting unit.The utility model can be used for the solar photovoltaic grid-connection generating.
Compared with prior art, the beneficial effects of the utility model are: by comparing the electric energy before and after the inversion unit inversion, judge the working condition of inversion unit, thereby the break-make of control inversion unit, avoid the situation of, overvoltage under-voltage, overcurrent to cause inversion unit to damage, make that the transmission of electric energy is more reliable and more stable because of occurring.
In order to make data acquisition reliable more, accurate, described data sampling unit is a voltage-current sensor.
As improvement of the present utility model, described CPU also links to each other with alarm unit.Make and in time to remind inversion unit the situation of under-voltage, overvoltage, overcurrent to occur.
Description of drawings
Fig. 1 is the utility model operation principle block diagram.
Among the figure: 1 solar energy photovoltaic array, 2DC converting unit, 3 show man-machine interface, 4 alarm units, 5CPU, 6 output control units, 7 electrical networks, 8 inversion units, 9 data sampling unit, 10 data processing units.
Embodiment
As shown in Figure 1; be the solar photovoltaic interconnected inverter protective device; comprise solar energy photovoltaic array 1; solar energy photovoltaic array 1 links to each other with DC converting unit 2; DC converting unit 2 links to each other with inversion unit 8; inversion unit 8 links to each other with output control unit 6; output control unit 6 links to each other with electrical network 7; DC converting unit 2; output control unit 6 all links to each other with data sampling unit 9; data sampling unit 9 is a voltage-current sensor; data sampling unit 9 outputs link to each other with data processing unit 10 inputs; data processing unit 10 outputs link to each other with CPU5; CPU5 respectively with inversion unit 8; show man-machine interface 3; alarm unit 4 links to each other, described demonstration man-machine interface 3 and DC converting unit 2 diconnecteds.
In the work, photovoltaic battery panel in the solar energy photovoltaic array 1 absorbs luminous energy and produces photovoltaic effect, with conversion of solar energy is that direct current energy flows to DC converting unit 2, DC converting unit 2 raises into the low-voltage DC in the photovoltaic array high voltage direct current and flows to inversion unit 8, inversion unit 8 is reverse into High Level AC Voltage with high voltage direct current and sends electrical network 7 to through output control unit 6 again and use for AC load, the data output that voltage-current sensor is gathered DC converting unit 2 and output control unit 6 is transferred to data processing unit 10, after data processing unit 10 computings, deliver to CPU5, CPU5 controls the break-make of inversion unit 8 according to the feature of signal, and send corresponding instruction to showing man-machine interface 3, under-voltage when occurring, overvoltage, during the situation of overcurrent, alarm unit 4 is sounded and is reminded the staff.
In addition to the implementation, the utility model can also have other execution modes.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection range of the utility model requirement.
Claims (3)
1. solar photovoltaic interconnected inverter protective device; comprise the solar energy photovoltaic array; described solar energy photovoltaic array links to each other with the DC converting unit; described DC converting unit links to each other with inversion unit; described inversion unit links to each other with output control unit; described output control unit links to each other with electrical network; it is characterized in that: described DC converting unit; output control unit all links to each other with the data sampling unit; described data sampling unit output links to each other with the data processing unit input; described data processing unit output links to each other with CPU; described CPU respectively with inversion unit; show that man-machine interface links to each other described demonstration man-machine interface and DC converting unit diconnected.
2. solar photovoltaic interconnected inverter protective device according to claim 1 is characterized in that: described data sampling unit is a voltage-current sensor.
3. solar photovoltaic interconnected inverter protective device according to claim 1 and 2 is characterized in that: described CPU also links to each other with alarm unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200313811U CN201946993U (en) | 2011-01-28 | 2011-01-28 | Protective device for solar energy photovoltaic grid-connection inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200313811U CN201946993U (en) | 2011-01-28 | 2011-01-28 | Protective device for solar energy photovoltaic grid-connection inverter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201946993U true CN201946993U (en) | 2011-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200313811U Expired - Fee Related CN201946993U (en) | 2011-01-28 | 2011-01-28 | Protective device for solar energy photovoltaic grid-connection inverter |
Country Status (1)
| Country | Link |
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| CN (1) | CN201946993U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103354364A (en) * | 2013-06-17 | 2013-10-16 | 深圳市汇川技术股份有限公司 | Convergence system, and method for improving generating efficiency of photovoltaic system |
-
2011
- 2011-01-28 CN CN2011200313811U patent/CN201946993U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103354364A (en) * | 2013-06-17 | 2013-10-16 | 深圳市汇川技术股份有限公司 | Convergence system, and method for improving generating efficiency of photovoltaic system |
| CN103354364B (en) * | 2013-06-17 | 2015-12-23 | 深圳市汇川技术股份有限公司 | The method of convergence system and raising photovoltaic system generating efficiency |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170503 Address after: 225000 Jiangsu province Yangzhou City Ferry Road Economic Development Zone No. 199 28 Patentee after: Yangzhou Asahi Solar Power Co. Ltd. Address before: 225000 No. 186 middle Yangzi Road, Jiangsu, Yangzhou Patentee before: Yangzhou Jingxu Power Supply Co., Ltd. |
|
| 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: 20110824 Termination date: 20190128 |