CN215871325U

CN215871325U - A device for on-line detection and on-site review of photovoltaic equipment faults

Info

Publication number: CN215871325U
Application number: CN202122120733.7U
Authority: CN
Inventors: 郭巍; 兰昊; 程帅; 王靖程; 刘承鑫; 章春香
Original assignee: Xian Thermal Power Research Institute Co Ltd
Current assignee: Xian Thermal Power Research Institute Co Ltd
Priority date: 2021-09-03
Filing date: 2021-09-03
Publication date: 2022-02-18
Anticipated expiration: 2031-09-03

Abstract

The utility model discloses a photovoltaic equipment fault on-line detection and on-site rechecking device which comprises a concrete base, a placing frame, a prompting sound, a power meter, a temperature sensor, an irradiator, a PLC (programmable logic controller) host, a confluence module, a first rechecking lamp, a second rechecking lamp and the like. The power meter can automatically match and generate nominal power of different environmental working conditions as output by taking the temperature and the light intensity monitored by the temperature sensor and the irradiator as input, so that the PLC host can realize the real-time comparison of the output nominal power of the power meter and the actual output active power of each branch converging module in the area, thereby detecting the abnormality at the first time when the photovoltaic equipment at the corresponding position fails, sending a signal to drive the rechecking lamp to light up and control the prompting sound to broadcast, assisting workers to carry out the quick fault positioning, abnormal rechecking and defect maintenance work, effectively overcoming the difficulty in troubleshooting of the photovoltaic equipment, improving the defect elimination rate and ensuring the normal operation of the photovoltaic power generation equipment.

Description

Photovoltaic equipment fault on-line detection and on-site rechecking device

Technical Field

The utility model relates to the technical field of photovoltaic equipment, in particular to a photovoltaic equipment fault on-line detection and on-site rechecking device.

Background

The photovoltaic is a solar photovoltaic power generation system for short, which is a novel power generation system for directly converting solar radiation energy into electric energy by utilizing the photovoltaic effect of a solar cell semiconductor material, and has two modes of independent operation and grid-connected operation, wherein the solar photovoltaic power generation system is centralized, such as a large northwest ground photovoltaic power generation system; one is distributed (with >6MW as boundary), such as factory building roof photovoltaic power generation system of industry and commerce, resident house roof photovoltaic power generation system.

The existing photovoltaic equipment is difficult to check due to large laying area when being damaged, so that the damaged photovoltaic module cannot be positioned and processed in time, and the normal use of the equipment is influenced.

Disclosure of Invention

The utility model provides a photovoltaic equipment fault on-line detection and on-site rechecking device, which solves the problems in the background technology.

The scheme for solving the technical problems is as follows:

a photovoltaic equipment fault on-line detection and on-site rechecking device comprises a concrete base 1, a placement frame 4, a prompt sound box 6, a power meter 7, a temperature sensor 8, an irradiator 9, a first rechecking lamp 12, a PLC host 13, a confluence module 14 and a second rechecking lamp 16, wherein the top of the concrete base 1 is fixedly provided with a plurality of bearing frames 2, the top of each bearing frame 2 is fixedly provided with a photovoltaic component 3, the middle position of the top of the concrete base 1 is fixedly provided with the placement frame 4, the top of the placement frame 4 is fixedly provided with a confluence box 5, one side of the confluence box 5 is connected with the prompt sound box 6 in a penetrating way, one side of the bearing frame 2 close to the confluence box 5 is fixedly connected with the power meter 7, the top of the power meter 7 is connected with the temperature sensor 8 and the irradiator 9, the bottom of the confluence box 5 is connected with a direct current cabinet 10 through a lead and a signal line, a mounting box 11 is fixedly mounted at the bottom of the direct current cabinet 10; the front side of the direct current cabinet 10 close to the edge of the bottom is provided with a vent pipe, and the top of each vent pipe is fixedly provided with a first rechecking lamp 12; the inner top of the combiner box 5 is fixedly connected with a PLC host 13, the front of the PLC host 13 is fixedly provided with a display screen, the PLC host 13 is fixedly connected with the prompt sound box 6, and the power meter 7 is electrically connected with the PLC host 13; a plurality of confluence modules 14 which are electrically connected with the photovoltaic modules 3 one by one and have the same number are fixedly arranged on the inner wall of the confluence box 5 close to the middle position, the bottom of the confluence box 5 is provided with a connecting hole, and the inner wall of the connecting hole is fixedly provided with a power-on pipe 15; the front surface of the bus module 14 is provided with a second rechecking lamp 16.

The right side of the placing box 11 is provided with a through wire hole matched with a wire.

The positive surface intermediate position fixed mounting of PLC host computer 13 has the display screen, set up the mounting hole with 6 looks adaptations of suggestion stereo set on the collection flow box 5, and the mounting hole inner wall and 6 fixed connection of suggestion stereo set.

A through hole is formed in the left side of the combiner box 5, and the power meter 7 penetrates through the through hole through a lead to be electrically connected with the PLC host 13.

The bottom of the photovoltaic module 3 is electrically connected with the bus bar module 14 through an electric wire.

The inner wall of the confluence box 5 of the confluence module 14 is provided with a plurality of groups, and the front surface of the confluence module 14 of each group is fixedly provided with a second rechecking lamp 16 close to the top edge.

The utility model provides a photovoltaic equipment fault on-line detection and on-site rechecking device, which has the following advantages:

by arranging the temperature sensor and the irradiator, the power meter can automatically match and generate nominal power of different environmental working conditions as output by taking the temperature and the light intensity monitored by the temperature sensor and the irradiator as input, so that the PLC host can realize real-time comparison of the output nominal power of the power meter and the actual output active power of each branch converging module in the region, and therefore, the abnormity can be detected at the first time when the photovoltaic power generation equipment at the corresponding position breaks down, and signals are sent to drive the first rechecking lamp and the second rechecking lamp to light; in addition, the PLC host can realize the broadcasting of the fault position of the photovoltaic power generation equipment through the control prompt sound box and assist workers in carrying out quick fault positioning, abnormal rechecking and defect maintenance, so that the problem of difficulty in troubleshooting caused by large photovoltaic production area and numerous and complicated power generation equipment is effectively overcome, the defect elimination rate is improved, and the normal operation of the photovoltaic power generation equipment is ensured.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings. The detailed description of the present invention is given in detail by the following examples and the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the utility model without limiting the utility model. In the drawings:

fig. 1 is a three-dimensional effect diagram of a photovoltaic device fault online detection and field review device according to an embodiment of the present invention;

fig. 2 is a front view of a bearing frame in the photovoltaic device fault online detection and field rechecking apparatus according to an embodiment of the present invention;

fig. 3 is a side view of an online photovoltaic device fault detection and field review apparatus according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a combiner box in the photovoltaic device fault online detection and field review apparatus according to an embodiment of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a concrete base; 2. a bearing frame; 3. a photovoltaic module; 4. a placement frame; 5. a combiner box; 6. a prompt sound box; 7. a power meter; 8. a temperature sensor; 9. an irradiator; 10. a DC cabinet; 11. a placement box; 12. a first rechecking lamp; 13. a PLC host; 14. a bus module; 15. a power-on tube; 16. and a second rechecking lamp.

Detailed Description

The principles and features of the present invention are described below in conjunction with the accompanying fig. 1-4, which are provided by way of example only to illustrate the present invention and not to limit the scope of the present invention. The utility model is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.

As shown in fig. 1-4, a photovoltaic equipment trouble on-line measuring and on-site rechecking device, including concrete foundation 1, concrete foundation 1's top fixed mounting has three bearing frame 2, the top fixed mounting of every bearing frame 2 has photovoltaic module 3, concrete foundation 1's top is close to left side edge intermediate position fixed mounting has place frame 4, place frame 4's top fixed mounting has collection flow box 5, the right side through connection of collection flow box 5 has suggestion stereo set 6, bearing frame 2's top is close to left side edge fixedly connected with power meter 7, power meter 7's top is close to left side edge through connection and has temperature sensor 8, power meter 7's top is close to right side edge through connection and has irradiation appearance 9, collection flow box 5's bottom is connected with direct current cabinet 10 through wire and signal line, direct current cabinet 10's bottom fixed mounting has place case 11.

Preferably, the positive surface of direct current cabinet 10 is close to the bottom edge and has seted up the through-wire pipe, and the equal fixed mounting in top of every group through-wire pipe has first recheck lamp 12, settles the right side of case 11 and offer the through-wire hole with wire looks adaptation, and the staff of being convenient for confirms that there is trouble or unusual collection flow box 5.

Preferably, the inner wall of collection flow box 5 is close to top edge fixedly connected with PLC host computer 13, and PLC host computer 13's positive surperficial intermediate position fixed mounting has a display screen, and PLC host computer 13's right side and 6 fixed connection of suggestion stereo set, and collection flow box 5's right side set up with the mounting hole of 6 looks adaptations of suggestion stereo set, and the mounting hole inner wall with 6 fixed connection of suggestion stereo set, the staff of being convenient for carries out the location of trouble through the audio frequency report.

Preferably, the inner wall of the junction box 5 is fixedly provided with a junction module 14 near the middle position, the bottom of the junction box 5 is provided with a connecting hole, and the inner wall of the connecting hole is fixedly provided with a power-on tube 15, so that the junction module 14 is electrically connected with the photovoltaic module 3 and the direct current cabinet 10.

Preferably, a through hole is formed in the left side of the combiner box 5, and the power meter 7 passes through the through hole through a wire to be electrically connected with the PLC host 13, so that the power meter 7 can compare analog quantity data with the PLC host 13.

Preferably, the bottom of the photovoltaic module 3 is electrically connected to the bus bar module 14 through a wire.

Preferably, the inner wall of the combiner box 5 is provided with three groups of the combiner module 14, and the front surface of the three groups of the combiner module 14 is fixedly provided with a second rechecking lamp 16 near the top edge, so that the abnormal photovoltaic string can be conveniently positioned.

Preferably, the middle position of the bottom of the bearing frame 2 is provided with a wire passing hole.

The specific working principle and the using method of the utility model are as follows: the temperature sensor 8 and the irradiator 9 can monitor the ambient temperature and the light intensity of the area where the device is located in real time, the power meter 7 can output nominal power under different working conditions according to the temperature and the light intensity and transmit the nominal power to the PLC host 13, the PLC host 13 can realize fault judgment by comparing the nominal power with the actual power of each confluence module 14, and a typical fault judgment principle comprises that one confluence module is abnormal, if the output power is zero or negative; secondly, the photovoltaic group string is abnormal, the actual power output by the single branch collecting module is far smaller than the nominal power (such as lower than 60 percent of the nominal power), and the like; and thirdly, the bus box is abnormal, and the actual power output by all the bus modules is lower than a certain proportion of the total nominal power (for example, lower than 85 percent of the total nominal power). When detecting the trouble after, PLC host computer 13 is through sending switching value signal drive this second recheck lamp 16 on the positive surface of module 14 that converges and light up, and PLC host computer 13 control suggestion stereo set 6 carries out the trouble position and reports, and typical broadcast content is: if a certain group of serial branches of a certain combiner box has a fault, the fault is checked again. The confluence module 14 transmits power to the direct current cabinet 10, the PLC host 13 transmits a driving signal to the direct current cabinet 10, and the first rechecking lamp 12 corresponding to the surface of the direct current cabinet 10 is turned on to indicate that a worker has a fault in the area and needs to recheck on site.

Through the mutual matching of the first rechecking lamp 12, the second rechecking lamp 16 and the prompt sound 6, the utility model can provide convenient and understandable fault indication for the working personnel after the working personnel arrive at the area where the device is located, and is convenient for the working personnel to quickly position the fault so as to carry out on-site rechecking and defect elimination of the fault.

The foregoing is merely a preferred embodiment of the utility model and is not intended to limit the utility model in any manner; the present invention may be readily implemented by those of ordinary skill in the art as illustrated in the accompanying drawings and described above; however, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the scope of the utility model as defined by the appended claims; meanwhile, any changes, modifications, and evolutions of the equivalent changes of the above embodiments according to the actual techniques of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. A device for on-line detection and on-site review of photovoltaic equipment faults, comprising a concrete base (1), a mounting frame (4), a prompt sound (6), a power meter (7), a temperature sensor (8), an irradiator (9), the first review lamp (12), the PLC host (13), the confluence module (14) and the second review lamp (16), characterized in that: the top of the concrete base (1) is fixedly installed with A plurality of load-bearing frames (2), a photovoltaic module (3) is fixedly installed on the top of each of the load-bearing frames (2), and a placement frame (4) is fixedly installed at the middle position of the top of the concrete base (1). A combiner box (5) is fixedly installed on the top of the placement frame (4), a prompt sound (6) is connected through one side of the combiner box (5), and the load-bearing frame (2) is adjacent to the side of the combiner box (5). A power meter (7) is fixedly connected on one side, the top of the power meter (7) is connected with a temperature sensor (8) and an irradiator (9), and the bottom of the combiner box (5) is connected with wires and signals A DC cabinet (10) is connected to the cable, and a placement box (11) is fixedly installed at the bottom of the DC cabinet (10); A first review lamp (12) is fixedly installed on the top of the line pipe; a PLC host (13) is fixedly connected to the inner top of the combiner box (5), and a display screen is fixedly installed on the front of the PLC host (13). The PLC host (13) is fixedly connected with the prompt sound (6), the power meter (7) is electrically connected with the PLC host (13); the inner wall of the combiner box (5) is fixedly installed with a The photovoltaic modules (3) are electrically connected to a plurality of converging modules (14) in the same number, wherein the bottom of the converging box (5) is provided with a connecting hole, and the inner wall of the connecting hole is fixedly installed with a energizing tube (15); A second review lamp (16) is installed on the front side of the confluence module (14).

2 . The device for on-line detection and on-site review of photovoltaic equipment faults according to claim 1 , wherein the right side of the placement box ( 11 ) is provided with a wire hole adapted to the wire. 3 .

3. A photovoltaic equipment fault online detection and on-site review device according to claim 1, characterized in that, a display screen is fixedly installed in the middle position of the front surface of the PLC host (13), and a combiner box (5) is provided with a display screen. An installation hole matched with the prompt sound (6), and the inner wall of the installation hole is fixedly connected with the prompt sound (6).

4. The device for on-line detection and on-site review of photovoltaic equipment faults according to claim 1, characterized in that a through hole is formed on the left side of the combiner box (5), and the power meter (7) passes through a wire It is electrically connected to the PLC host (13) through the through hole.

5 . The device for on-line detection and on-site review of photovoltaic equipment faults according to claim 1 , wherein the bottom of the photovoltaic module ( 3 ) is electrically connected to the bus module ( 14 ) through wires. 6 .

6. The device for on-line detection and on-site review of photovoltaic equipment faults according to claim 1, characterized in that, the combiner module (14) is provided with several groups on the inner wall of the combiner box (5), and each group of the A second review lamp (16) is fixedly installed on the front surface of the bus module (14) near the top edge.