CN111998802A - Double-shaft photovoltaic tracking system tracking precision field detection equipment - Google Patents
Double-shaft photovoltaic tracking system tracking precision field detection equipment Download PDFInfo
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- CN111998802A CN111998802A CN202010851515.8A CN202010851515A CN111998802A CN 111998802 A CN111998802 A CN 111998802A CN 202010851515 A CN202010851515 A CN 202010851515A CN 111998802 A CN111998802 A CN 111998802A
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- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
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Abstract
The invention relates to a double-shaft photovoltaic tracking system tracking precision field detection device, and belongs to the field of detection devices. The invention comprises a light transmission device, a base, a photoresistance array receiver, an inclination angle measurer and an analysis system, wherein the light transmission device comprises a light transmission surface and a light transmission device cylinder wall which are mutually connected, the center of the light transmission surface is a light transmission hole, the light transmission device cylinder wall is connected with the base, the photoresistance array receiver comprises photoresistances and receivers, the photoresistances are closely distributed on a central cross line of the receivers, the analysis system comprises a data acquisition unit, a communication module and a computer terminal, and the data acquisition unit, the communication module and the inclination angle measurer are all integrated in the base. The invention has reasonable integral structure design, is safe and reliable, can enable the tracking running condition of the tracking system to be digitalized and visualized, and realizes convenient detection and analysis of the deviation of the tracking system.
Description
Technical Field
The invention relates to detection equipment, in particular to field detection equipment for tracking precision of a double-shaft photovoltaic tracking system, which can realize convenient detection on real-time tracking precision of a double-shaft photovoltaic tracker, feed back normal angle errors of a tracking plane, and comprehensively analyze tracking running conditions of the double-shaft photovoltaic tracker by combining with other related running monitoring data, and belongs to the field of detection equipment.
Background
At present, the technical optimization of a photovoltaic power station still mainly depends on the power improvement of a photovoltaic module, but the technical progress of the photovoltaic module is limited by the progress of material science, and the technical level and the power generation capacity of the photovoltaic power station are difficult to be greatly improved in a short period. By applying the photovoltaic tracking system, the generated energy and the intelligent and automatic level of the photovoltaic power station can be effectively improved under the condition of the prior art. At present, the usage amount of a photovoltaic tracking system in China only accounts for about 6% of the total installed capacity of photovoltaic power generation, and a large-scale development stage is not yet entered, but with the continuous development of new technologies and new control strategies and the continuous increase of the demand of each power generation enterprise for improving the power generation amount of a photovoltaic power station, the introduction of the photovoltaic tracking system is one of important ways for the technical optimization of the photovoltaic power station in China in the future.
Under the prior art, the photovoltaic tracking system still has the problems of high field operation failure rate, unstable operation performance, high maintenance cost, difficulty in performing effective performance detection on the photovoltaic tracking system and the like. Due to the fact that performance of the tracking system cannot be confirmed in a visual inspection mode, a large number of photovoltaic tracking systems operate with diseases under fault conditions, the problems of tracking deviation, unstable mechanism operation, frequent fault and the like are caused, normal operation of the photovoltaic tracking power generation system is seriously influenced, power generation loss is caused, and equipment accidents are caused when the normal operation is serious. Meanwhile, no relevant inspection and detection standards or specifications for the photovoltaic tracking system exist in China, so that the situation that the detection work cannot be relied on is caused, and the popularization of the photovoltaic tracking technology is adversely affected.
The chinese patent publication No. CN201488725U, publication No. 2010, 26/05/78, discloses a utility model named "a sun direction detecting device for automatically tracking the sun". This patent leads to a light section of thick bamboo and is hollow cylinder, and open at the top center has the round hole, and round hole department is equipped with protective glass. The light intensity sensor is arranged at the top of the light-passing cylinder and beside the protective glass, and the four-quadrant photoelectric detector is arranged at the center of the bottom of the light-passing cylinder. The light intensity sensor and the four-quadrant photoelectric detector are respectively connected with a signal processing circuit, the signal processing circuit is connected with a computer through an A/D channel of the computer, and the computer is connected with an external clock chip and a tracking device. The patent is difficult to carry out effective performance detection, and the detection work has no detection standard, so the patent also has the defects.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides the double-shaft photovoltaic tracking system tracking precision field detection equipment which is reasonable in structural design, safe and reliable, can enable the tracking running condition of the tracking system to be digitalized and visualized, and realizes convenient detection and analysis of the deviation of the tracking system.
The technical scheme adopted by the invention for solving the problems is as follows: this biax photovoltaic tracking system tracking accuracy field detection equipment, including printing opacity ware and base, its characterized in that: the automatic analysis device is characterized by further comprising a photoresistance array receiver, an inclination angle measurer and an analysis system, wherein the phototransmission device comprises a light transmission surface and a phototransmission device cylinder wall which are connected with each other, the center of the light transmission surface is a light transmission hole, the phototransmission device cylinder wall is connected with the base, the photoresistance array receiver comprises a photoresistance and a receiver, the photoresistance is closely arranged on a central cross line of the receiver, the analysis system comprises a data acquisition unit, a communication module and a computer terminal, and the data acquisition unit, the communication module and the inclination angle measurer are all integrated in.
Preferably, the invention also comprises a magnetic-type attachment which is arranged at the lower part of the base; the magnetic attachment is configured to securely attach to a component support metal structure of the tracking system.
Preferably, the light transmission device of the present invention is a cylindrical light transmission device.
Preferably, the center of the light transmission surface of the light transmitter is provided with a light transmission hole, and the aperture of the light transmission hole is 3-5 mm.
Preferably, the light transmission surface of the light transmitter is made of a round opaque metal material.
Preferably, the light transmission surface is connected with the cylinder wall of the light transmitter through threads, and the cylinder wall of the light transmitter is connected with the base through threads.
Preferably, the base of the invention adopts a circular trapezoid table-type base.
Preferably, the communication module adopts a wireless or wired communication module, transmits the electric signals fed back by the photoresistor array to a computer terminal in real time, and then is analyzed and calculated by an analysis system.
Preferably, the inclination measurer measures the plane inclination of the component of the photovoltaic tracking system in real time and feeds back inclination detection information; the data acquisition unit acquires an electric signal output by the plane of the photoresistor array in the detection process.
Preferably, the photoresistor array receiver of the invention adopts a type of photoresistor with high precision combined with a four-quadrant photodetector.
Compared with the prior art, the invention has the following advantages and effects: 1) the method is applied to field tracking precision detection equipment of a double-shaft tracking system from the actual operation and maintenance requirements of the tracking system adopted by the photovoltaic power station, and can provide an operation and maintenance detection means for a station adopting the tracking system; 2) as no detection technical specification and field detection equipment for the photovoltaic tracking system exist in China, beneficial support can be provided for field performance analysis, fault diagnosis and other work of the tracking system.
Drawings
FIG. 1 is a schematic diagram of an apparatus according to an embodiment of the present invention.
FIG. 2 is a schematic diagram of a photoresistor array receiver according to an embodiment of the invention;
fig. 3 is a schematic diagram of the principle of the device according to the embodiment of the present invention.
In the figure: the device comprises a light transmission device 1, a light transmission device cylinder wall 2, a photoresistor array receiver 3, a base 4 and a magnetic type attachment 5.
Detailed Description
The present invention will be described in further detail below by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not to be construed as limiting the present invention.
Examples are given.
Referring to fig. 1 to 3, the field detection device for tracking accuracy of the dual-axis photovoltaic tracking system of the embodiment includes a light transmitter 1, a base 4, a photoresistor array receiver 3, an inclinometer and an analysis system, wherein the light transmitter 1 includes a light transmitting surface and a light transmitter cylinder wall 2 which are connected with each other, a light transmitting hole is formed in the center of the light transmitting surface, the light transmitter cylinder wall 2 is connected with the base 4, and the photoresistor array receiver 3 includes a photoresistor and a receiver.
The light transmission device 1 in the present embodiment: the principle of detecting and tracking precision by a pinhole method is adopted, the device is a cylindrical light-transmitting device, the light-transmitting surface is made of a round opaque metal material, a light-transmitting hole is formed in the center of the light-transmitting surface, and the aperture is about 3-5mm, so that incident rays of the sun can enter a signal acquisition plane of a photoresistor array below the light-transmitting device 1 through the light-transmitting hole. The inner part of the cylinder wall 2 of the light transmission device is blackened, so that the detection data acquisition is prevented from being influenced by diffuse reflection sunlight. The light transmission device 1 adopts a combined design, a light transmission surface can be connected with the light transmission device cylinder wall 2 through threads, and the light transmission device cylinder wall 2 is connected with the base 4 through a thread structure. After combination, the light transmission device 1 is sealed and light-proof, and only the light rays passing through the light transmission holes irradiate into the wall 2 of the light transmission device.
The photoresistor array receiver 3 in this embodiment is designed to have a photoresistor array in a type of combining a high-precision photoresistor with a four-quadrant photodetector. The photoresistors are closely arranged on the central cross line of the circular receiver and are used for detecting single-azimuth (righteast, southwest, rightwest and northwest) offset optical signals. The rest photosensitive areas are four-quadrant photoelectric detectors for detecting incident light signals with multi-azimuth offset. When the double-shaft tracking system operates normally and tracks accurately, incident solar rays are coincident with a normal line of a component plane carried by the tracking system, namely, an included angle of 90 degrees is formed between the incident solar rays and the component plane. At this time, the sunlight incident through the light transmission device 1 should vertically irradiate on one of the photo resistors at the center of the photo resistor array receiver 3, i.e. the electrical signal output by the sensor at the center of the photo resistor array is defined to represent that the sunlight incident angle is 0 °, and the tracking is accurate. When the tracking accuracy of the tracking system deviates, the solar ray incident through the light transmitter 1 deviates from the normal position, that is, there is a certain incident angle with the normal of the component plane and the plane of the photoresistor array receiver 3, and the light spot of the light through the light transmitter 1 on the plane of the photoresistor array receiver 3 also deviates from the center, resulting in the generation of electric signal output by the sensors at different positions. The deviation angles and the directions represented by the sensors at different positions of the photosensitive array are subjected to mapping tests and correspond to an analysis program, so that the detection and analysis of the tracking deviation degree of the tracking system are realized.
The communication module of the embodiment adopts a wireless or wired communication module, and the communication module transmits the electric signals fed back by the photoresistor array to a computer terminal in real time and then carries out analysis and calculation by an analysis system.
The inclination angle measurer measures the plane inclination angle of the component of the photovoltaic tracking system in real time, feeds back inclination angle detection information and achieves the purpose of auxiliary detection; the data acquisition unit acquires the electric signals output by the plane of the photoresistor array in the detection process and sends the electric signals to the computer platform through the communication module. And analyzing the light spot deviation position corresponding to the detection signal based on a deviation analysis algorithm, and correspondingly converting the light spot deviation position into a sun incident ray angle deviation result, so that the on-site accurate detection of the tracking precision of the double-shaft photovoltaic tracking system is realized.
The analysis system comprises a data acquisition device, a communication module and a computer terminal, wherein the data acquisition device, the communication module and the inclination measurer are all integrated in a base. The data acquisition unit acquires an electric signal output by the plane of the photoresistor array in the detection process. Based on the corresponding relation between the position of each acquisition point of the photosensitive array and the offset angle of the incident light spot and an angle deviation analysis algorithm integrated by the system, the position and the intensity change of the real-time photosensitive signal are analyzed and converted into the angle deviation between the normal line of the real-time tracking plane and the normal line of the theoretical tracking plane, and the detection data are obtained. The visualization of detection data can be realized through a computer terminal, and the tracking state of the tracking system in operation can be conveniently analyzed by field operation and maintenance and detection engineers. The data transmission adopts a wireless and wired signal compatible mode, so that the equipment can be flexibly placed, and for a tracking system with a higher bracket height, the interference of the outgoing line of the detection equipment on the operation of the equipment can be avoided by adopting the wireless mode, and the use flexibility of the equipment can also be improved.
The detection mode of the embodiment is as follows: the light transmission device 1, the photoresistor array receiver 3, the inclination angle measurer, the data collector and the wireless data communication module form a test unit. The magnetic module arranged in the base is adsorbed on a component support frame of the double-shaft tracking system. The test unit moves synchronously with the tracking system, receives the irradiation of the incident sunlight and judges the deviation of the incident light spots. The collected detection data are transmitted to a receiving computer terminal on site through the wireless communication module, and the detection result is comprehensively analyzed through analysis system software, so that an operator can know the running precision deviation of the tracking system and guide the maintenance, operation and maintenance work of the equipment.
The embodiment is based on the analysis of a tracking strategy of a double-axis tracking system, and by utilizing the characteristic that a plane of a photovoltaic module of the double-axis tracking system should form an incident angle of 90 degrees with the incident direction of solar rays in real time (namely, the normal line of the tracking plane is coincident with the incident solar rays, and the included angle is 0 degree), the method is provided for utilizing a photoresistor array as an optical signal receiver, acquiring an electric signal converted by the receiver through a data analysis system, converting the electric signal into an angle deviation signal between the normal angle of the tracking plane and the incident solar rays, and feeding back the angle deviation. Meanwhile, the inclination angle of the plane of the tracking system component is monitored in real time by utilizing an integrated inclination measurer device, so that detection implementation is assisted.
The embodiment is based on a pinhole method measuring principle, adopts a photoresistor array and an inclination measurer as measuring and sensing devices, and feeds back the solar incident angle deviation when the tracking system operates, so that the field real-time detection and process automation of the photovoltaic tracking system are realized.
The embodiment is provided with a photoresistor array receiver 3 to replace a traditional incident light spot azimuth and angle dial (sundial). The device can convert the incident light and the light spot deviation position into electric signals, realize the digitization of the detection information and improve the detection precision. The receiver adopts an array design combining a high-precision photoresistor and a four-quadrant photoelectric detector.
The embodiment is provided with an inclination measurer, and can detect the inclination value of the double-shaft photovoltaic tracking system in real time and feed back data, so that the aim of auxiliary detection is fulfilled.
The embodiment is provided with a wireless communication module and a data analysis system. According to the system integrated photovoltaic tracking system detection algorithm, after the photoresistor array generates detection electric signals, the detection electric signals are sent to a computer terminal through wireless communication, the position electric signals are converted into incident light angle deviation results through analysis software and output to workers, and the purpose of conveniently detecting and analyzing the tracking precision of the double-shaft photovoltaic tracking system is achieved.
And will be apparent to those skilled in the art from the foregoing description.
In addition, it should be noted that the specific embodiments described in the present specification may be different in the components, the shapes of the components, the names of the components, and the like, and the above description is only an illustration of the structure of the present invention. Equivalent or simple changes in the structure, characteristics and principles of the invention are included in the protection scope of the patent. Various modifications, additions and substitutions for the specific embodiments described may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (10)
1. The utility model provides a biax photovoltaic tracking system tracking accuracy field detection equipment, includes printing opacity ware and base, its characterized in that: the automatic analysis device is characterized by further comprising a photoresistance array receiver, an inclination angle measurer and an analysis system, wherein the phototransmission device comprises a light transmission surface and a phototransmission device cylinder wall which are connected with each other, the center of the light transmission surface is a light transmission hole, the phototransmission device cylinder wall is connected with the base, the photoresistance array receiver comprises a photoresistance and a receiver, the photoresistance is closely arranged on a central cross line of the receiver, the analysis system comprises a data acquisition unit, a communication module and a computer terminal, and the data acquisition unit, the communication module and the inclination angle measurer are all integrated in.
2. The dual-axis photovoltaic tracking system tracking accuracy field inspection device of claim 1, wherein: still including magnetism formula attachment, magnetism is inhaled formula attachment and is set up in the base lower part.
3. The dual-axis photovoltaic tracking system tracking accuracy field inspection device of claim 1, wherein: the light transmission device is a cylindrical light transmission device.
4. The dual-axis photovoltaic tracking system tracking accuracy field inspection device of claim 1, wherein: the center of the light transmission surface of the light transmitter is provided with a light transmission hole, and the aperture of the light transmission hole is 3-5 mm.
5. The dual-axis photovoltaic tracking system tracking accuracy field inspection device of claim 4, wherein: the light transmitting surface of the light transmitter is made of round opaque metal.
6. The dual-axis photovoltaic tracking system tracking accuracy field inspection device of claim 1, wherein: the light transmitting surface is connected with the wall of the light transmitter cylinder through threads, and the wall of the light transmitter cylinder is connected with the base through threads.
7. The dual-axis photovoltaic tracking system tracking accuracy field inspection device of claim 1, wherein: the base adopts a circular trapezoid table type base.
8. The dual-axis photovoltaic tracking system tracking accuracy field inspection device of claim 1, wherein: the communication module adopts a wireless or wired communication module, transmits the electric signals fed back by the photoresistor array to a computer terminal in real time, and then is analyzed and calculated by an analysis system.
9. The dual-axis photovoltaic tracking system tracking accuracy field inspection device of claim 1, wherein: the inclination measurer measures the plane inclination of the component of the photovoltaic tracking system in real time and feeds back inclination detection information; the data acquisition unit acquires an electric signal output by the plane of the photoresistor array in the detection process.
10. The dual-axis photovoltaic tracking system tracking accuracy field inspection device of claim 1, wherein: the photoresistor array receiver adopts a type of photoresistor with high precision and a four-quadrant photoelectric detector.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113654655A (en) * | 2021-08-24 | 2021-11-16 | 宁波工程学院 | Solar sun-tracking visible light photoresistor detection method |
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- 2020-08-21 CN CN202010851515.8A patent/CN111998802A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113654655A (en) * | 2021-08-24 | 2021-11-16 | 宁波工程学院 | Solar sun-tracking visible light photoresistor detection method |
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