CN204374256U - A kind of photovoltaic meter measuring tank - Google Patents
A kind of photovoltaic meter measuring tank Download PDFInfo
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- CN204374256U CN204374256U CN201520070205.7U CN201520070205U CN204374256U CN 204374256 U CN204374256 U CN 204374256U CN 201520070205 U CN201520070205 U CN 201520070205U CN 204374256 U CN204374256 U CN 204374256U
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Abstract
The utility model relates to a kind of photovoltaic meter measuring tank, for photovoltaic generation electric energy metrical, comprise a casing, casing comprises photovoltaic DC input end, a metering ammeter and the grid-connected side of civil power, the direct current that photovoltaic array produces to conflux input from described photovoltaic DC input end, after external combining inverter is transformed into alternating current, then inputs described metering ammeter and carry out generated energy statistics, be finally transported to the grid-connected side of civil power.Tool has the following advantages: the voltage and current signal received is carried out sampling and calculates by metering ammeter, accurate measurement can go out the generated energy of photovoltaic array; This photovoltaic meter measuring tank can be used for the photovoltaic power generation equipment of below current value 60A, installed capacity below 50KW; By arranging view window, whether staff can observe current electricity generation system and stablize, and understands generated energy in real time; By the setting of various switch and lightning arrester, improve safety and reliability; Overall structure is simple, and easy and simple to handle, be easy to installation and maintenance, reliability is high, accurate measurement.
Description
Technical field
The utility model belongs to electric energy metrical field, particularly relates to a kind of photovoltaic meter measuring tank.
Background technology
Along with the development of human industry, worsen in global warming, human ecological environment, conventional energy resources shortage of resources under causing the situation of environmental pollution, the utilization of fossil energy constantly brings the pressure of each side to environment, solar photovoltaic technology generally obtains attention and the support of national governments.Countries in the world accelerate the exploitation to cleaning new energy, and sun power, because having the clean feature such as harmless, widely distributed, is more and more subject to the favor of people.Photovoltaic also becomes the focus of current distributed new generating.
Along with the news speed development of photovoltaic industry, oneself solar photo-voltaic power generation station has all been loaded onto in increasing resident, enterprise, school, market etc., and the metering of the generated energy of photovoltaic just becomes an emphasis difficult problem.Especially National Development and Reform Committee draw up the electrovalence policy determining encouragement photovoltaic generation when, at present, also do not have a set of corresponding system or equipment to detect it.
Utility model content
The utility model solves problems of the prior art, provides a kind of photovoltaic meter measuring tank, makes the metering of photovoltaic generation more accurately and specification and have safety and reliability.
For reaching above-mentioned purpose, the technical solution of the utility model is: a kind of photovoltaic meter measuring tank, for photovoltaic generation electric energy metrical, comprise a casing, described casing comprises photovoltaic DC input end, a metering ammeter and the grid-connected side of civil power, the direct current that photovoltaic array produces to conflux input, after external combining inverter is transformed into alternating current from described photovoltaic DC input end, input described metering ammeter again and carry out generated energy statistics, be finally transported to the grid-connected side of civil power.
Preferably, to connect between the output terminal of described photovoltaic DC end and external combining inverter input end a photovoltaic DC switch; A series connection inverter ac switch between the output terminal and the input end of described metering ammeter of external combining inverter; Connect between the input end of the output terminal of described metering ammeter and the grid-connected side of civil power one and exchange grid-connected switch.Photovoltaic DC switch is set, for the protection of photovoltaic DC circuit and equipment; Inverter ac switch is set, for disconnecting circuit when maintenance or fault, makes photovoltaic DC-to-AC converter out of service, prevent photovoltaic DC-to-AC converter from having alternating current to export; Arrange and exchange grid-connected switch, when photovoltaic DC-to-AC converter can be prevented out of service, mains current flows into inverter.
Further, the input end of external combining inverter accesses a direct current arrester; The input end of described metering ammeter accesses an alternating-current lightning arrestor.Lightning arrester is set, avoids thunderbolt for the protection of circuit arrangement.
Preferably, described casing is provided with a metering ammeter view window, to observe charge value.
The technical program, its tool has the following advantages: the voltage and current signal received is carried out sampling and calculates by metering ammeter, accurate measurement can go out the generated energy of photovoltaic array; This photovoltaic meter measuring tank can be used for the photovoltaic power generation equipment of below current value 60A, installed capacity below 50KW; By arranging view window, whether staff can observe current electricity generation system and stablize, and understands generated energy in real time; By the setting of various switch and lightning arrester, improve safety and reliability; Photovoltaic DC-to-AC converter is arranged on casing outside, such that the structure of batch meter entirety is simple, volume is little and light, and easy and simple to handle, be easy to installation and maintenance, reliability is high, accurate measurement.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
Fig. 1 is the electrical schematic diagram of specific embodiment of the utility model;
Reference numeral: 1, photovoltaic DC end; 2, photovoltaic DC switch; 3, direct current arrester; 4, combining inverter; 5, inverter ac switch; 6, alternating-current lightning arrestor; 7, metering ammeter; 8, grid-connected switch is exchanged; 9, the grid-connected side of civil power; 10, casing.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described further.
A kind of photovoltaic meter measuring tank, for photovoltaic generation electric energy metrical, comprise a casing, described casing comprises photovoltaic DC input end, a metering ammeter and the grid-connected side of civil power, the direct current that photovoltaic array produces to conflux input from described photovoltaic DC input end, after external combining inverter is transformed into alternating current, then inputs described metering ammeter and carry out generated energy statistics, be finally transported to the grid-connected side of civil power.
To connect between the output terminal of photovoltaic DC end and external combining inverter input end a photovoltaic DC switch; A series connection inverter ac switch between the output terminal and the input end of described metering ammeter of external combining inverter; Connect between the input end of the output terminal of described metering ammeter and the grid-connected side of civil power one and exchange grid-connected switch.
The input end of external combining inverter accesses a direct current arrester; The input end of described metering ammeter accesses an alternating-current lightning arrestor.
Casing is provided with a metering ammeter view window, to observe charge value.
Specific embodiment as shown in Figure 1, a kind of photovoltaic meter measuring tank, comprise a casing 10, casing comprises photovoltaic DC input end 1, metering ammeter 7,5, one, 9, one, the grid-connected side of civil power photovoltaic DC switch, 2, inverter ac switch exchanges grid-connected switch 8, direct current arrester 3, alternating-current lightning arrestor 6.
Be electrically connected as follows: photovoltaic DC end 1 accesses to the input end of photovoltaic DC switch 2, the output terminal of photovoltaic DC switch 2 respectively accesses to the input end of combining inverter 4, and the input end of combining inverter 4 connects a direct current arrester 3 simultaneously; The output terminal of combining inverter 4 accesses to the input end of inverter ac switch 5; The output terminal of inverter ac switch 5 connects the input end of metering ammeter 7, also connects an alternating-current lightning arrestor 6 simultaneously; The output terminal of metering ammeter 7 accesses to the input end exchanging grid-connected switch 8, exchanges the output terminal access grid-connected side 9 of civil power of grid-connected switch 8.
Although specifically show in conjunction with preferred embodiment and describe the utility model; but those skilled in the art should be understood that; not departing from the spirit and scope of the present utility model that appended claims limits; in the form and details the utility model is made a variety of changes, be protection domain of the present utility model.
Claims (4)
1. a photovoltaic meter measuring tank, for photovoltaic generation electric energy metrical, it is characterized in that, comprise a casing, described casing comprises photovoltaic DC input end, a metering ammeter and the grid-connected side of civil power, the direct current that photovoltaic array produces to conflux input, after external combining inverter is transformed into alternating current from described photovoltaic DC input end, input described metering ammeter again and carry out generated energy statistics, be finally transported to the grid-connected side of civil power.
2. a kind of photovoltaic meter measuring tank as claimed in claim 1, is characterized in that, a photovoltaic DC switch of connecting between the output terminal of described photovoltaic DC end and external combining inverter input end; A series connection inverter ac switch between the output terminal and the input end of described metering ammeter of external combining inverter; Connect between the input end of the output terminal of described metering ammeter and the grid-connected side of civil power one and exchange grid-connected switch.
3. a kind of photovoltaic meter measuring tank as claimed in claim 2, is characterized in that, the input end of external combining inverter accesses a direct current arrester; The input end of described metering ammeter accesses an alternating-current lightning arrestor.
4. a kind of photovoltaic meter measuring tank as claimed in claim 1, is characterized in that, described casing is provided with a metering ammeter view window, to observe charge value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520070205.7U CN204374256U (en) | 2015-02-02 | 2015-02-02 | A kind of photovoltaic meter measuring tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520070205.7U CN204374256U (en) | 2015-02-02 | 2015-02-02 | A kind of photovoltaic meter measuring tank |
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| Publication Number | Publication Date |
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| CN204374256U true CN204374256U (en) | 2015-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520070205.7U Active CN204374256U (en) | 2015-02-02 | 2015-02-02 | A kind of photovoltaic meter measuring tank |
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| CN (1) | CN204374256U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104569526A (en) * | 2015-02-02 | 2015-04-29 | 厦门市东港智能科技有限公司 | Photovoltaic metering box |
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2015
- 2015-02-02 CN CN201520070205.7U patent/CN204374256U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104569526A (en) * | 2015-02-02 | 2015-04-29 | 厦门市东港智能科技有限公司 | Photovoltaic metering box |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |