CN104283513A - Measuring device and measuring method for optimum inclination angle of solar photovoltaic module - Google Patents

Measuring device and measuring method for optimum inclination angle of solar photovoltaic module Download PDF

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Publication number
CN104283513A
CN104283513A CN201310643935.7A CN201310643935A CN104283513A CN 104283513 A CN104283513 A CN 104283513A CN 201310643935 A CN201310643935 A CN 201310643935A CN 104283513 A CN104283513 A CN 104283513A
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CN
China
Prior art keywords
solar photovoltaic
chip microcomputer
measurement mechanism
photovoltaic assembly
tilt angle
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Pending
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CN201310643935.7A
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Chinese (zh)
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孟昭渊
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Individual
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Individual
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Priority to CN201310643935.7A priority Critical patent/CN104283513A/en
Publication of CN104283513A publication Critical patent/CN104283513A/en
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02SGENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S50/00Monitoring or testing of PV systems, e.g. load balancing or fault identification
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy

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  • Photovoltaic Devices (AREA)

Abstract

The invention discloses a measuring device for the optimum inclination angle of a solar photovoltaic module. The measuring device comprises a work table, a control device and the solar photovoltaic module, wherein the solar photovoltaic module is installed at the top end of the work table. The control device controls the solar photovoltaic module to rotate, the voltage of a circuit is measured in real time, and therefore the radiation quantity of the solar photovoltaic module in different inclination angles is reflected. The measuring device and measuring method have the advantages that the conception is unique and practical, the design is scientific and reasonable, the structure is simple and ingenious and the effect is stable and reliable.

Description

Solar photovoltaic assembly optimum tilt angle measurement mechanism and method of measurement
Technical field
The present invention relates to solar facilities field, particularly relate to solar photovoltaic assembly optimum tilt angle measurement mechanism and method of measurement.
Background technology
The energy output of solar photovoltaic assembly is decided by the solar radiation quantity that it can receive, although the radiation intensity on sun surface is almost constant, sunlight being subject to the absorption of earth atmosphere, the strong impact of scattering process becomes variable.Usually, solar radiation is made up of to the energy on photovoltaic module 3 parts: (1) is radiant section directly, and the sunlight of this part is that vertical radiation is on assembly; (2) scattered portion, the solar energy of this part is because sunlight is by the steam inside the cloud layer in air during atmosphere, dust granule changes the path of sunray, and light arrives the energy on the surface of solar cell after irregular reflection, refraction; (3) reflection of ground or building near solar cell.
Also have a kind of solar module phenomenon in use: the azimuth of solar module be not Due South to 0 degree, but a fixing angle by east or to the west, optimum incline angle is in this case different with Due South parallactic angle, needs to redesign.
Generally we refer to the solar radiation quantity horizontal plane from the solar radiation data that meteorological department obtains, and obtain solar radiation also will under the support of other parameters a series of to the amount of radiation had on the photovoltaic module at certain angle of inclination, by calculating.Certainly, while calculating, the numerical value of optimum tilt angle also just out.
Azimuth, inclination angle are larger for the impact of solar module energy output.Owing to being difficult to obtain meteorologic parameter more accurately, there is deviation in the result of calculating unavoidably, and the energy output that small deviation may make the photovoltaic plant of MW level annual reduces by several ten thousand KWh.So use one can real time record solar module be very important at different orientations, angle of inclination for raising photovoltaic module energy output.
Summary of the invention
The present invention provides a kind of solar photovoltaic assembly optimum tilt angle measurement mechanism to solve deficiency of the prior art, finds the optimum incline angle of solar photovoltaic assembly by the method measured in real time.
For achieving the above object, the technical solution used in the present invention is:
A kind of solar photovoltaic assembly optimum tilt angle measurement mechanism, comprise workbench, control device and solar photovoltaic assembly, described workbench comprises U-shaped assembly support, fixed mount, stepping motor, reduction box, stopping means, jockey, installing solar photovoltaic component on described U-shaped assembly support, described stopping means is arranged on fixed mount lower end, jockey one end is connected with stopping means, and one end is connected with upper mounting platform.Described stepping motor, reduction box are arranged on fixed mount inside, and described U-shaped assembly support lower end and reductor pass through pinned connection.Described control device comprises single-chip microcomputer, sample resistance, control board, power supply, and described sample resistance and solar photovoltaic assembly are by being connected with single-chip microcomputer after wired in series; Described stepping motor, reduction box are connected with single-chip microcomputer after connecting, the operation of the whole measurement mechanism of described Single-chip Controlling.
As a kind of preferred version of solar photovoltaic assembly optimum tilt angle measurement mechanism of the present invention, described power supply is made up of described solar photovoltaic assembly and the storage battery be attached thereto, by solar photovoltaic assembly and storage battery, whole measurement mechanism is powered, do not need extra external power supply just can work alone.
As a kind of preferred version of solar photovoltaic assembly optimum tilt angle measurement mechanism of the present invention, described power supply is grid alternating current, is powered by electrical network, and electricity is stablized.
As a kind of preferred version of solar photovoltaic assembly optimum tilt angle measurement mechanism of the present invention, the circuit at described sample resistance place is connected with bipolar transistor (metal-oxide-semiconductor), by the amplification at double of the voltage signal in circuit, single-chip microcomputer identification and calculating can be easy to.
As a kind of preferred version of solar photovoltaic assembly optimum tilt angle measurement mechanism of the present invention, described stopping means is one stroke switch, when U-shaped assembly support rotates to horizontal level, travel switch starts, and avoids U-shaped assembly support to rotate the damage causing equipment downwards.
Utilize described measurement mechanism to measure a method for optimum tilt angle, it is characterized in that, comprise the following steps:
(1), under the Pulse Width Control that stepping motor sends at single-chip microcomputer, U-shaped assembly support is driven to rotate certain angle to the left or to the right;
(2) after rotation terminates, pulse is sent in short-term by solar module short circuit by single-chip microcomputer, the voltage of the circuit at sample resistance place when measuring and record short circuit, the resistance value of sample resistance is fixed and known, the short circuit current of solar module is directly proportional to intensity of solar radiation, measure the magnitude of voltage at this moment loop, this magnitude of voltage and solar photovoltaic assembly linear, the solar radiation quantity received to compare solar photovoltaic assembly by the magnitude of voltage measured;
(3), under the Pulse Width Control that stepping motor sends at single-chip microcomputer, U-shaped assembly support is driven to continue to rotate certain angle to the left or to the right;
(4), after rotation terminates, pulse is sent in short-term by solar module short circuit by single-chip microcomputer, the voltage of the circuit at sample resistance place when measuring and record short circuit;
(5) repeat step (3), (4), until U-shaped assembly support is the level of state, stay for some time, repeat step (1)-(4).
Beneficial effect:
Solar photovoltaic assembly optimum tilt angle measurement mechanism of the present invention, rotated according to certain procedures by the U-shaped assembly support of Single-chip Controlling, the radiation event of Real-Time Monitoring solar photovoltaic assembly, design uniqueness is practical, design science is reasonable, simple and ingenious structure, effect stability are reliable.
Accompanying drawing explanation
Fig. 1 is solar photovoltaic assembly optimum tilt angle measurement mechanism schematic diagram of the present invention.
Schematic diagram when Fig. 2 is measurement mechanism of the present invention another kind operating state.
Wherein: 1, workbench 2, solar photovoltaic assembly 11, U-shaped assembly support 12, fixed mount 13, travel switch 14, jockey
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Embodiment 1
As shown in the figure, a kind of solar photovoltaic assembly optimum tilt angle measurement mechanism, comprise workbench 1, control device and solar photovoltaic assembly 2, described workbench 1 comprises U-shaped assembly support 11, fixed mount 12, stepping motor, reduction box, travel switch 13, jockey 14, installing solar photovoltaic component on described U-shaped assembly support 11, described travel switch 13 is arranged on fixed mount 12 lower end, jockey 14 one end is connected with travel switch 13, and one end is connected with upper mounting platform.Described stepping motor, reduction box are arranged on fixed mount inside, and described U-shaped assembly support 11 lower end and reductor pass through pinned connection.Described control device comprises single-chip microcomputer, sample resistance, control board, power supply, and described sample resistance, solar photovoltaic assembly, bipolar transistor are by connecting to form measuring circuit with single-chip microcomputer after wired in series.Described stepping motor, reduction box are connected with single-chip microcomputer after connecting, the operation of the whole measurement mechanism of described Single-chip Controlling.Single-chip microcomputer is also connected with display unit and input unit by wire, and the result of single chip computer measurement sends host computer to by the mode of wireless transmission.
Embodiment 2
Utilize described solar photovoltaic assembly optimum tilt angle measurement mechanism to measure a method for optimum tilt angle, comprise the following steps:
(1), under the Pulse Width Control that stepping motor sends at single-chip microcomputer, drive U-shaped assembly support to turn left 3 degree from vertical direction, stop 0.5 second;
(2) within this time of staying, the pulse that width is 30ms is sent by single-chip microcomputer, by solar module short circuit, the voltage of the circuit at sample resistance place when measuring and record short circuit, the resistance value of sample resistance is 0.1 ohm, and the short circuit current of solar module is directly proportional to intensity of solar radiation, measures the magnitude of voltage at this moment loop, this magnitude of voltage and solar photovoltaic assembly linear, by the magnitude of voltage measured to compare solar photovoltaic assembly receive solar radiation quantity;
(3), under the Pulse Width Control that stepping motor sends at single-chip microcomputer, drive U-shaped assembly support to continue to turn left 3 degree, stop 0.5 second, and carry out voltage measurement;
(4) U-shaped assembly support turns left after 12 degree, and the U-shaped assembly support of Single-chip Controlling often turns right 3 degree, stops and measures for 0.5 second, until U-shaped assembly support vertical direction is to right avertence 12 degree;
(5) step 1 is repeated until U-shaped assembly support vertical direction is to left avertence 24 degree;
(6) until U-shaped assembly support is the level of state, stop 10 minutes, repeat previous step.
Although be illustrated embodiments of the present invention in specification, these execution modes just as prompting, should not limit protection scope of the present invention.Carry out various omission, displacement and change without departing from the spirit and scope of the present invention all should be included in protection scope of the present invention.

Claims (6)

1. a solar photovoltaic assembly optimum tilt angle measurement mechanism, it is characterized in that: comprise workbench, control device and solar photovoltaic assembly, described workbench comprises U-shaped assembly support, fixed mount, stepping motor, reduction box, stopping means, jockey, installing solar photovoltaic component on described U-shaped assembly support, described stepping motor, reduction box are arranged on fixed mount inside, and described U-shaped assembly support lower end and reductor pass through pinned connection; Described control device comprises single-chip microcomputer, sample resistance, control board, power supply, and described sample resistance and solar photovoltaic assembly are by being connected with single-chip microcomputer after wired in series; Described stepping motor, reduction box are connected with single-chip microcomputer after connecting.
2. solar photovoltaic assembly optimum tilt angle measurement mechanism according to claim 1, is characterized in that: described power supply is made up of described solar photovoltaic assembly and the storage battery be attached thereto.
3. solar photovoltaic assembly optimum tilt angle measurement mechanism according to claim 1, is characterized in that: described power supply is grid alternating current.
4. solar photovoltaic assembly optimum tilt angle measurement mechanism according to claim 1, is characterized in that: the circuit at described sample resistance place is connected with metal-oxide-semiconductor.
5. solar photovoltaic assembly optimum tilt angle measurement mechanism according to claim 1, is characterized in that: described stopping means is one stroke switch.
6. utilize the measurement mechanism according to any one of claim 1 to 5 to measure a method for optimum tilt angle, it is characterized in that comprising the following steps:
(1), under the Pulse Width Control that stepping motor sends at single-chip microcomputer, U-shaped assembly support is driven to rotate certain angle to the left or to the right;
(2), after rotation terminates, pulse is sent in short-term by solar module short circuit by single-chip microcomputer, the voltage of the circuit at sample resistance place when measuring and record short circuit;
(3), under the Pulse Width Control that stepping motor sends at single-chip microcomputer, U-shaped assembly support is driven to continue to rotate certain angle to the left or to the right;
(4), after rotation terminates, pulse is sent in short-term by solar module short circuit by single-chip microcomputer, the voltage of the circuit at sample resistance place when measuring and record short circuit;
(5) repeat step (3), (4), until U-shaped assembly support is the level of state, stay for some time, repeat step (1)-(4).
CN201310643935.7A 2013-11-26 2013-11-26 Measuring device and measuring method for optimum inclination angle of solar photovoltaic module Pending CN104283513A (en)

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CN201310643935.7A CN104283513A (en) 2013-11-26 2013-11-26 Measuring device and measuring method for optimum inclination angle of solar photovoltaic module

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CN201310643935.7A CN104283513A (en) 2013-11-26 2013-11-26 Measuring device and measuring method for optimum inclination angle of solar photovoltaic module

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113125002A (en) * 2019-12-31 2021-07-16 江苏和网源电气有限公司 Double-sided photovoltaic optimal inclination angle testing device and testing method

Citations (3)

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Publication number Priority date Publication date Assignee Title
KR20090125512A (en) * 2008-06-02 2009-12-07 박석현 Sun place chase equipment of solar cell block
CN202815598U (en) * 2012-09-18 2013-03-20 北京市计科能源新技术开发公司 Performance calibration instrument for automatic tracking system of solar power generation equipment
CN103135603A (en) * 2011-11-27 2013-06-05 飞秒光电科技(西安)有限公司 Solar elevation angle testing meter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090125512A (en) * 2008-06-02 2009-12-07 박석현 Sun place chase equipment of solar cell block
CN103135603A (en) * 2011-11-27 2013-06-05 飞秒光电科技(西安)有限公司 Solar elevation angle testing meter
CN202815598U (en) * 2012-09-18 2013-03-20 北京市计科能源新技术开发公司 Performance calibration instrument for automatic tracking system of solar power generation equipment

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113125002A (en) * 2019-12-31 2021-07-16 江苏和网源电气有限公司 Double-sided photovoltaic optimal inclination angle testing device and testing method

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Application publication date: 20150114