CN206146556U

CN206146556U - Monitoring system for precision measurement photovoltaic module temperature

Info

Publication number: CN206146556U
Application number: CN201620657630.0U
Authority: CN
Inventors: 孟彦龙; 金尚忠; 陈亮
Original assignee: China Jiliang University
Current assignee: China Jiliang University
Priority date: 2016-06-29
Filing date: 2016-06-29
Publication date: 2017-05-03
Anticipated expiration: 2026-06-29

Abstract

The utility model discloses a monitoring system of real -time precision measurement photovoltaic module temperature, system have mainly included the signal generation and analytic system, sensing fiber and corresponding monitoring subassembly that comprises signal light source, optical coupler, robot scaling equipment, spectrometer, analytic system and control system, a serial communication port, the temperature information at the subassembly back uses the light signal among the sensing fiber to obtain with analytic system via the signal generation as the carrier. The utility model discloses a monitoring system of real -time precision measurement photovoltaic module temperature, loading and final obtain of temperature information on the light signal can obtain the accurate temperature regime of object detection point, be favorable to improving the efficiency of photovoltaic power plant fortune dimension.

Description

A kind of monitoring system of accurate measurement photovoltaic module temperature

Technical field

This utility model belongs to photovoltaic application field, and the temperature for being related to component in a kind of photovoltaic plant in real time, is precisely detected System.

Background technology

With being on the increase for domestic photovoltaic plant installed capacity, for the operation management of photovoltaic plant is increasingly becoming one The important job content of item.If photovoltaic plant operation management is proper in time, it is possible to effectively lift the generating of photovoltaic plant Efficiency, and extend its service life.A very important job content during photovoltaic plant operation management is exactly to composition Elementary cell-the photovoltaic module of photovoltaic plant is periodically cleaned, the timely replacing of Fault Identification and faulty components.

Generally, photovoltaic plant operation management personnel may occur by group string electric current, change in voltage inference problems component Position, and then block-by-block inspection is carried out to problem component region, and then determine problem component, which is changed.In photovoltaic By thermal imaging system probe assembly surface temperature in component checkout procedure, detect improper temperature spot and then recognize that guilty culprit is A kind of the more commonly used method, but in the group string number that there is doubtful problem component is relatively more and group is gone here and there, component count is more When the mode that judges of this component one by one inspection also bring along huge workload, easily cause operation maintenance personnel fatigue, cause inspection Survey inefficiency.

The utility model proposes a kind of real-time accurate measures the monitoring system of photovoltaic module temperature, by optical fiber is laid on Component back surface, temperature change the change for causing optical signal in optical fiber, so as to be obtained according to the knots modification of optical signal and propagation time Obtain accurately temperature and position data.The method can not only obtain assembly temperature data in real time, improve O＆M efficiency, its monitoring Precision also preferably, is more beneficial for the judgement of failure.

Utility model content

The problem existed for prior art in this utility model proposes a kind of temperature of photovoltaic battery pack carries out reality When the method monitored.

The temperature monitoring system of component in a kind of photovoltaic plant, which at least has following framework：A. the back side laying of component One optical fiber for being used for transmission signal；B. many components are laid overleaf using same optical fiber；C. the two ends of optical fiber connect respectively Enter signal source and signal receiver；D. the position that temperature anomaly point occurs is judged by the analysis to light signal.

The fiber optic materials that said temperature detecting system is adopted are at least SiO₂, polystyrene, polyphenylene sulfide, polytetrafluoroethyl-ne One kind in alkene, polyurethane and resin material.

Optical fiber in said temperature monitoring system is at least laid in module backside using an optical fiber.

When being routed to each module backside using discrete optical fiber in said temperature monitoring system, the two ends of optical fiber at least respectively have One adapter.

Optical fiber in said temperature monitoring system is at least solid using a kind of adhesion in binding agent, adhesive tape auxiliary jointing material It is scheduled on the finished product photovoltaic module back side.

Optical fiber in said temperature monitoring system can also be fixed on component internal, and light after encapsulating by the way of encapsulation At least respectively there is a fiber bonding device at fine two ends.

Photovoltaic module in said temperature monitoring system is at least crystal silicon component, amorphous silicon module, flexible polycrystal silicon film group In part, telluride cadmium component, dye sensitization component, organic photovoltaic component, CIGS component, compound component, concentrating component It is a kind of.

Photovoltaic module in said temperature monitoring system installed at least through support, attach without support in one kind pacifying Dress.

Optical fiber sensing system signal optical source in said temperature monitoring system is at least in LASER Light Source, LED light source Kind.

Compared with prior art, this utility model has the advantage that：A kind of photovoltaic module temperature in this utility model Method of real-time, by laying sensor fibre in module backside, realizes to photovoltaic module temperature reality in large area photovoltaic plant When monitor, realize carrying out power station the purpose of high maintenance with this.

Description of the drawings

Structural representations of the Fig. 1 for optical fiber sensing monitoring module backside temperature.

Fig. 2 is optical fiber sensing system configuration diagram.

Fig. 3 is sensor fibre connection diagram.

Fig. 4 is the schematic diagram that optical fiber is laid at the single component back side.

Specific embodiment

Below in conjunction with the accompanying drawings this utility model is described in further detail.

One kind can real-time monitoring assembly temperature method, specific implementation process is as follows：

As a kind of structure of specific embodiment, as shown in figure 1, in encapsulated monocrystal silicon photovoltaic module 1-1,1- The back side of 2 ... ..., 1-n, according in component Monocrystalline silicon cell piece put in order laying one whole piece from photovoltaic module 1-1 to 1-n Glass optical fiber 2-3.Glass optical fiber 2-3 is adhered fixed in module backside by adhesive tape.Photovoltaic module is according to local latitude Fixed on the ground with stainless steel stent according to certain angle with supporting surface situation.In the system work process, the one of optical fiber 2-3 End is linked into and collectively constitutes fiber temperature sensing system by laser signal generation system 2-1 and sounding analysis system 2-2, by The optical signal that signal generating system is produced is propagated in glass optical fiber, can produce Raman scattering letter dorsad in communication process simultaneously Number.When temperature anomaly point is run into, the Raman signal of backscattering can also produce change, and temperature can be obtained from the change procedure The range information of the value and temperature anomaly point of degree abnormity point.

As a kind of temperature-sensing system structure of specific embodiment, as shown in Figure 2 in each temperature field of space exploration During temperature, launch a standing wave from light source 3-2 Jing bonder 3-5, robot scaling equipment 3-6 to the Fibre Optical Sensor 3-7 being made up of optical fiber Long optical signal.Optical signal reaches temperature field application point of the distance signal initial end for L, and temperature field is produced to the optical signal in optical fiber Raw scattering process.Optical signal after being scattered is different from original initial optical signal, information of the signal with temperature field.Jing temperature The scaled device 3-6 of scattered signal after the scattering of degree field reaches bonder 3-5, and is connect by beam splitter 3-4 by bonder 3-5 Receive, optical signals analysis system 3-3 after Jing beam splitter 3-4 light splitting is analyzed.If necessary to temperature on the optical fiber of detection The distance of point location distance signal starting transmitting terminal 3-5 is L, scattered signal again return to 3-5 the time required to for t, light The distance passed by a fiber by signal is 2L, then

Wherein V is light spread speed in a fiber,

Wherein C is the light velocity in vacuum, and n is optical fibre refractivity.What is measured at the t moment is from optical fiber incidence end Backscattering optical signal of the distance for local at L, thus can obtain the temperature field for producing scattered signal institute on whole piece optical fiber The particular location at place, optical fibre refractivity n, it is known that time t can by detection obtain, so as to can obtain in real time laying optical fiber light The distance of sensing point, temperature conditionss on volt component.

As a kind of mode of optical fiber laying in specific embodiment, as shown in figure 3, can be by a whole piece glass light in Fig. 1 Fine 2-3 is split as independent sensor fibre 4-1,4-2,4-3, and is independently laid on each photovoltaic module back side, and 4-1,4-2,4-3 Between can be attached by adapter 5-2,5-3 etc..

Used as a kind of structure of photovoltaic module in specific embodiment, photovoltaic module 6-1 as shown in Figure 4 is by multiple photovoltaic electrics Pool unit 7-1,7-2,7-3 ... wait composition, and the wherein one section 8-1 of glass optical fiber 2-3 for being used for sensing in above-mentioned steps can be by The photovoltaic cells cell backside of constituent components is attached to successively according to circuit type, and is sealed with crystal silicon battery jointly in encapsulation process Dress, constitutes the photovoltaic module with independent sensing function.After encapsulation, in component, the glass optical fiber 8-1 of indwelling is equivalent to Fig. 3 institutes Show glass optical fiber 4-1,4-2 after segmentation etc., glass optical fiber 8-1 terminals can be by the joints of optical fibre 5-1,5-2 shown in Fig. 3 etc. The glass optical fiber that adapter is encapsulated in being had the photovoltaic module of similar structures with other is coupled together, and forms a complete sensing Passage.

Claims

1. a kind of real-time accurate measures the monitoring system of photovoltaic module temperature, it is characterised in that concrete framework is as follows：A. component Lay the optical fiber for being used for transmission signal in the back side；B. many components are laid overleaf using same optical fiber；C. the two of optical fiber End is respectively connected to signal source and signal receiver；D. the position that temperature anomaly point occurs is judged by the analysis to light signal.

2. a kind of real-time accurate according to claim 1 measures the monitoring system of photovoltaic module temperature, it is characterised in that institute The fiber optic materials stated are the one kind in SiO2, polystyrene, polyphenylene sulfide, politef, polyurethane and resin material.

3. a kind of real-time accurate according to claim 1 measures the monitoring system of photovoltaic module temperature, it is characterised in that institute The optical fiber stated can be laid in multiple module backsides using an optical fiber, it is also possible to individually lay simultaneously in each module backside The optical fiber of each module backside is connected using adapter.

4. a kind of real-time accurate according to claim 3 measures the monitoring system of photovoltaic module temperature, it is characterised in that pass The optical fiber for leading signal can be adhered fixed at the finished product photovoltaic module back side using binding agent, adhesive tape.

5. a kind of real-time accurate according to claim 3 measures the monitoring system of photovoltaic module temperature, it is characterised in that pass The optical fiber for leading signal can be fixed in photovoltaic module the back side of cell piece and directly encapsulate.

6. a kind of real-time accurate according to claim 5 measures the monitoring system of photovoltaic module temperature, it is characterised in that envelope What is filled has fiber bonding device for conducted signal optical fiber two ends.

7. a kind of real-time accurate according to claim 1 measures the monitoring system of photovoltaic module temperature, it is characterised in that light Volt component is crystal silicon component, amorphous silicon module, flexible polycrystal silicon film component, telluride cadmium component, dye sensitization component, organic photovoltaic One kind in component, CIGS component, compound component, concentrating component.

8. a kind of real-time accurate according to claim 1 measures the monitoring system of photovoltaic module temperature, it is characterised in that light Volt component mounting means is that support is installed, attaches the one kind in mounting means without support.

9. a kind of real-time accurate according to claim 1 measures the monitoring system of photovoltaic module temperature, it is characterised in that light In fiber sensor system signal optical source be laser, the one kind in LED light source.