CN106656042A - Safety detection and service life evaluation method of photovoltaic panel - Google Patents

Safety detection and service life evaluation method of photovoltaic panel Download PDF

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Publication number
CN106656042A
CN106656042A CN201611264087.9A CN201611264087A CN106656042A CN 106656042 A CN106656042 A CN 106656042A CN 201611264087 A CN201611264087 A CN 201611264087A CN 106656042 A CN106656042 A CN 106656042A
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China
Prior art keywords
photovoltaic panel
photovoltaic
controller
temperature
safety detection
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CN201611264087.9A
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Chinese (zh)
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CN106656042B (en
Inventor
姚志民
尚建坤
牛冰玉
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JIANGSU FUYIHE NEW ENERGY TECHNOLOGY Co.,Ltd.
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ANHUI JINGRUN NEW ENERGY Co Ltd
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02SGENERATION OF ELECTRIC POWER BY CONVERSION OF INFRA-RED 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
    • H02S50/10Testing of PV devices, e.g. of PV modules or single PV cells
    • 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

Abstract

The invention discloses a safety detection and service life evaluation method of a photovoltaic panel. On the basis of a photovoltaic system comprising the photovoltaic panel, a temperature sensor, an ampere meter, a voltmeter and a controller, a quantized value is calculated by comprehensively considering a working environment parameter, a power generation parameter and an external environment parameter of a photoelectric conversion material of the photovoltaic panel so as to accurately evaluate the service life of the photovoltaic panel and remind a worker to replace the photovoltaic panel in time, thereby facilitating the equipment maintenance of large-scale photovoltaic power plants, reducing the maintenance cost and guaranteeing the power generation efficiency.

Description

A kind of photovoltaic panel safety detection and lifetime estimation method
Technical field
The invention belongs to solar energy generation technology field, and in particular to a kind of photovoltaic panel safety detection and life appraisal system System.
Background technology
Photovoltaic generation is one of technological meanses of human use's solar energy.Existing photovoltaic power generation plate is to turn polylith photoelectricity Conversion materials are integrated in one piece of substrate, are finally assemblied at what is be made on support.In large-scale photovoltaic power plant, can use The photovoltaic power generation plate of enormous amount is arranged into array, is connected to boosting, convertor equipment by series-parallel circuit and power storage exists In accumulator or it is connected to the grid.
It is well known that photovoltaic material has certain service life, and because manufacturing process is complicated, each piece of photovoltaic is sent out Electroplax may all have different service life.Further, since the presence of integrated circuit or other failures, also leads to each piece The life-span of photovoltaic power generation plate is not quite similar.Also another key factor, is exactly the operational heat problem of semiconductor silicon material, sternly Ghost image rings the working life of photovoltaic panel.
In sum, there is random working life and terminate in a large amount of photovoltaic panels in large-sized photovoltaic power plant, or based on sending out Electric benefit considers and should terminate that situation about using.
Although the system for currently existing photovoltaic panel remote failure remote monitoring, normally only whether photovoltaic panel is deposited Nonserviceable and judged.System and method currently without being detected to photovoltaic panel working life and assessed.
The content of the invention
The purpose of the present invention to the photovoltaic panel working life of enormous amount in large-sized photovoltaic power plant precisely in order to carry out standard Really assessment, it is proposed that a kind of service life evaluation system and method, while early warning can be carried out to the safety of photovoltaic panel.It is of the present invention Working life terminate typically refer to photovoltaic panel physical attribute end-of-life or based on power benefit consider the life-span should terminate that.
Present invention firstly provides a kind of photovoltaic panel safety detection and service life evaluation system, mainly including photovoltaic panel, temperature Sensor, ammeter, voltmeter, controller;
The quantity of the temperature sensor is at least one, positioned at the photovoltaic back, and connects with photoelectric conversion material Touch and install;The ammeter and voltmeter are separately mounted on the power output terminal of the photovoltaic panel;The temperature sensor, Ammeter, voltmeter connect respectively controller;The controller persistently receives the temperature signal of temperature sensor, selects the highest temperature Degree simultaneously compares with fixed threshold;The controller persistently receives electric current, the voltage signal of ammeter and voltmeter, and calculates photovoltaic The output of plate.
Photovoltaic panel safety detection and service life evaluation system also include thermometer and the illumination meter being connected with controller, use respectively In real-time measuring environment temperature and solar illuminance.
Used as further optimization technique means, the quantity of the temperature sensor is 3 or more than 3, distributing installation In photovoltaic back central area.
Present invention also offers a kind of photovoltaic panel safety detection and lifetime estimation method, perform in accordance with the following steps:
Step one, the temperature of temperature sensor measurement photoelectric conversion material, when detection temperature value T exceeds secure threshold T ' When, controller disconnects the output circuit of photovoltaic panel and reports to the police;
Step 2, when detection temperature value T of photoelectric conversion material is less than secure threshold T ', controller according to ammeter and Photovoltaic panel output current I and magnitude of voltage U of voltmeter measurement in real time calculates the real-time output G of photovoltaic panel, and is entered according to following formula Row is calculated:
Wherein, δ is the integrated value in 0- Δ T times, T0It is real time environment temperature, L is real-time solar illuminance, and Δ is Δ Gross output in T time;
Step 3, controller is by the δ obtained by the calculating and δ for prestoring0Compare, if δ≤δ0, then the work of photovoltaic panel is judged Life-span expires;
Step 4, if δ >=δ0, then repeat step one is to step 3.
Further, in step 2, comprising the measurement to temperature and illuminance.
Further, in step 3, controller disconnects photovoltaic panel output circuit and reports to the police.
The present invention is by the operating temperature parameter of photovoltaic panel photoelectric conversion material, generated output parameter and external environment condition ginseng Number is considered, and calculates the numerical value of a quantization, with the working life of accurate evaluation photovoltaic panel, remind staff and Shi Jinhang is changed, and facilitates the plant maintenance in large-sized photovoltaic power plant, reduces maintenance cost, has ensured generating efficiency.
Description of the drawings
Fig. 1 is the photovoltaic system structural schematic block diagram of the present invention;
Fig. 2 is photovoltaic panel and detection device schematic diagram in the present invention;
Fig. 3 is the workflow diagram of the photovoltaic panel safety detection of the present invention and lifetime estimation method.
In figure:1st, photovoltaic panel;2nd, temperature sensor;3rd, ammeter;4th, voltmeter.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings:
Referring to accompanying drawing 1-2, a kind of photovoltaic system of the present invention, mainly include photovoltaic panel 1, temperature sensor 2, ammeter 3, Voltmeter 4, controller (not shown);
The quantity of the temperature sensor 2 is at least one, positioned at the back side of the photovoltaic panel 1, and and photoelectric conversion material Contact is installed;The ammeter 3 and voltmeter 4 are separately mounted on the power output terminal of the photovoltaic panel 1;The temperature is passed Sensor 2, ammeter 3, voltmeter 4 connect respectively controller;The controller persistently receives the temperature signal of temperature sensor 2, Select maximum temperature and compare with fixed threshold;The controller persistently receives electric current, the voltage letter of ammeter 3 and voltmeter 4 Number, and calculate the output of photovoltaic panel 1.
As shown in figure 1, further, the photovoltaic system of the present invention also includes thermometer and the illumination being connected with controller Meter, is respectively used to real-time measuring environment temperature T0With solar illuminance L.
Used as further optimization technique means, the quantity of the temperature sensor is 3 or more than 3, distributing installation In photovoltaic back central area.
The operation principle and safety detection of the photovoltaic system of the present invention and lifetime estimation method are described in detail as follows.
The temperature of the direct measurement photoelectric conversion material of temperature sensor 2 of the present invention, when detection temperature value T exceeds safety threshold Value T ' (T >=T ') when, controller directly disconnects the output circuit of photovoltaic panel, makes photovoltaic panel quit work, ensure photovoltaic panel itself Safety.If during normal work, photoelectric conversion material temperature reaches or beyond the upper limit, then there is operation troubles or the photovoltaic panel life-span arrives Up to final value, therefore controller is answered alarm staff to be safeguarded or is changed recovery.
When observed temperature value T of photoelectric conversion material is less than secure threshold T ', controller is according to ammeter and voltmeter Photovoltaic panel output current I and magnitude of voltage U of measurement in real time calculates the real-time output G=IU of photovoltaic panel.Counted according to following formula Calculate:
Wherein, δ is the integrated value in 0- Δ T times, T0It is real time environment temperature, L is real-time solar illuminance.
Above formula is meant that, in consideration illuminance L to ambient temperature T0And generating output G contribution when, in Δ T Gross output δ in time.In this formula, it is considered to which it is excessive to calculate data, therefore takes extraction of square root to process, and final δ-value is simultaneously There is no physical meaning, the assessment parameter related to photovoltaic panel gross output feature in Δ T time is only represented.
According to the theoretical value or empirical value in photovoltaic panel life-span, determine that can reflect a photovoltaic panel synthesis forward efficiency output work The δ of rate value0Value.
Controller is by the δ obtained by the calculating and δ for prestoring0Compare, if δ≤δ0, then the working life for judging photovoltaic panel arrives Phase, it is impossible to which positive power benefit of reentrying, controller disconnects the photovoltaic panel output circuit, and alarm staff should be right Photovoltaic panel is changed, and carries out eliminating recovery.
If δ >=δ0, then illustrate that photovoltaic panel working condition is normal, with the occasion of power benefit, can continue to stably carry out Opto-electronic conversion.Therefore cycle detection and the assessment of next round can be carried out.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie In the case of spirit or essential attributes without departing substantially from the present invention, the present invention can be in other specific forms realized.Therefore, no matter From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power Profit is required rather than described above is limited, it is intended that all in the implication and scope of the equivalency of claim by falling Change is included in the present invention.Any reference in claim should not be considered as and limit involved claim.
Moreover, it will be appreciated that although this specification is been described by according to embodiment, not each embodiment is only wrapped Containing an independent technical scheme, this narrating mode of description is only that for clarity those skilled in the art should Using description as an entirety, the technical scheme in each embodiment can also Jing it is appropriately combined, form those skilled in the art Understandable other embodiment.
The invention is not restricted to description of the above to embodiment, those skilled in the art according to disclosure of the present invention, The improvement that need not be carried out through creative work on the basis of the present invention and modification, all should protection scope of the present invention it It is interior.

Claims (3)

1. a kind of photovoltaic panel safety detection and lifetime estimation method, it is characterised in that
Based on the photovoltaic system for including photovoltaic panel, temperature sensor, ammeter, voltmeter, controller, perform as follows:
Step one, the temperature of temperature sensor measurement photovoltaic panel photoelectric conversion material, when detection temperature value T exceeds secure threshold T ' When, controller disconnects the output circuit of photovoltaic panel and reports to the police;
Step 2, when detection temperature value T of photoelectric conversion material is less than secure threshold T ', controller is according to ammeter and voltage Photovoltaic panel output current I and magnitude of voltage U of table measurement in real time calculates the real-time output G of photovoltaic panel, and is counted according to following formula Calculate:
δ = ∫ 0 Δ T ( L / T 0 · G / T ) ,
Wherein, δ is the integrated value in 0- Δ T times, T0It is real time environment temperature, L is real-time solar illuminance, and δ is Δ T time Interior gross output;
Step 3, controller is by the δ obtained by the calculating and δ for prestoring0Compare, if δ≤δ0, then the working life of photovoltaic panel is judged Expire;
Step 4, if δ >=δ0, then repeat step one is to step 3.
2. a kind of photovoltaic panel safety detection according to claim 1 and lifetime estimation method, it is characterised in that
In step 2, comprising the measurement to temperature and illuminance.
3. a kind of photovoltaic panel safety detection according to claim 1 and lifetime estimation method, it is characterised in that
In step 3, controller disconnects photovoltaic panel output circuit and reports to the police.
CN201611264087.9A 2016-12-30 2016-12-30 A kind of photovoltaic panel safety detection and lifetime estimation method Active CN106656042B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112019159A (en) * 2019-05-28 2020-12-01 汉能移动能源控股集团有限公司 Outdoor life evaluation method and device for photovoltaic module

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103235221A (en) * 2013-04-18 2013-08-07 河海大学常州校区 Fault detecting system and fault detecting method for photovoltaic power station remote monitoring
CN103472331A (en) * 2013-09-13 2013-12-25 同济大学 Photovoltaic power generation fault diagnosis system based on photovoltaic physical model
CN103605369A (en) * 2013-11-22 2014-02-26 航天科工深圳(集团)有限公司 Solar cell assembly hot spot monitoring system and method based on unmanned plane
CN103984292A (en) * 2013-02-07 2014-08-13 阿特斯(中国)投资有限公司 Photovoltaic system
CN203883770U (en) * 2014-03-03 2014-10-15 常州瑞恩动力科技有限公司 Solar module
CN104124915A (en) * 2014-05-05 2014-10-29 厦门永宏远电子科技有限公司 Monitoring system for solar micro-inversion photovoltaic module
KR101510986B1 (en) * 2014-01-22 2015-04-09 유한회사 엔씨피플 Photovoltaic Power With Start Controller by Sub-system
CN104615187A (en) * 2013-11-01 2015-05-13 上海岩芯电子科技有限公司 Solar photovoltaic system hot spot detection and optimal control method
KR101632831B1 (en) * 2015-02-24 2016-06-23 울산과학대학교 산학협력단 Apparatus for fault location detection of the photovoltaic module
CN105717854A (en) * 2014-12-03 2016-06-29 西安银河网电智能电气有限公司 Roof photovoltaic power generation monitoring system
CN106100578A (en) * 2016-05-30 2016-11-09 佛山科学技术学院 A kind of fault detection method being applicable to photovoltaic parallel in system and system thereof
CN106100554A (en) * 2016-06-29 2016-11-09 国网山东省电力公司济南市历城区供电公司 A kind of photovoltaic complex control system

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103984292A (en) * 2013-02-07 2014-08-13 阿特斯(中国)投资有限公司 Photovoltaic system
CN103235221A (en) * 2013-04-18 2013-08-07 河海大学常州校区 Fault detecting system and fault detecting method for photovoltaic power station remote monitoring
CN103472331A (en) * 2013-09-13 2013-12-25 同济大学 Photovoltaic power generation fault diagnosis system based on photovoltaic physical model
CN104615187A (en) * 2013-11-01 2015-05-13 上海岩芯电子科技有限公司 Solar photovoltaic system hot spot detection and optimal control method
CN103605369A (en) * 2013-11-22 2014-02-26 航天科工深圳(集团)有限公司 Solar cell assembly hot spot monitoring system and method based on unmanned plane
KR101510986B1 (en) * 2014-01-22 2015-04-09 유한회사 엔씨피플 Photovoltaic Power With Start Controller by Sub-system
CN203883770U (en) * 2014-03-03 2014-10-15 常州瑞恩动力科技有限公司 Solar module
CN104124915A (en) * 2014-05-05 2014-10-29 厦门永宏远电子科技有限公司 Monitoring system for solar micro-inversion photovoltaic module
CN105717854A (en) * 2014-12-03 2016-06-29 西安银河网电智能电气有限公司 Roof photovoltaic power generation monitoring system
KR101632831B1 (en) * 2015-02-24 2016-06-23 울산과학대학교 산학협력단 Apparatus for fault location detection of the photovoltaic module
CN106100578A (en) * 2016-05-30 2016-11-09 佛山科学技术学院 A kind of fault detection method being applicable to photovoltaic parallel in system and system thereof
CN106100554A (en) * 2016-06-29 2016-11-09 国网山东省电力公司济南市历城区供电公司 A kind of photovoltaic complex control system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112019159A (en) * 2019-05-28 2020-12-01 汉能移动能源控股集团有限公司 Outdoor life evaluation method and device for photovoltaic module

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