CN218958359U

CN218958359U - Distributed photovoltaic anti-islanding protection device

Info

Publication number: CN218958359U
Application number: CN202222464131.8U
Authority: CN
Inventors: 李振国; 朱明�; 施玉春; 王玉君; 田远
Original assignee: Jiangsu Siyuan Power Co ltd
Current assignee: Jiangsu Siyuan Power Co ltd
Priority date: 2022-09-16
Filing date: 2022-09-16
Publication date: 2023-05-02
Anticipated expiration: 2032-09-16

Abstract

The application provides a distributed photovoltaic anti-islanding protection device belongs to anti-islanding technical field to solve current anti-islanding protection device and can not utilize the wind channel that forms after a plurality of anti-islanding protector overlap joints to dispel the heat problem, comprising a base plate, the middle fixedly connected with supporting seat of bottom plate, the top fixed mounting of supporting seat has the backup pad, anti-islanding protector has been placed to the inside of backup pad, anti-islanding protector's outside fixed mounting has the connecting frame, and the outside of backup pad is provided with the dustcoat, the opening has been seted up to the rear side of dustcoat, and the gas pocket has all been seted up to the left and right sides of dustcoat below. The application not only can overlap joint a plurality of anti-islanding protectors, but also after the overlap joint, the wind channel that forms between the adjacent two anti-islanding protectors can cooperate external fan tuber pipe to carry out high-efficient heat dissipation, has solved the defect that current anti-islanding protection device is not applicable to distributed photovoltaic power generation place use.

Description

Distributed photovoltaic anti-islanding protection device

Technical Field

The utility model relates to the field of anti-islanding, in particular to a distributed photovoltaic anti-islanding protection device.

Background

The anti-islanding effect is that a certain area of a circuit has a current path without current flowing actually, when the anti-islanding effect occurs in a power grid, electric equipment is damaged, and potential safety hazards exist in the follow-up overhaul process, so that the anti-islanding protection device is matched;

according to the retrieval, the publication No. CN201922201663.0 discloses a photovoltaic anti-islanding device, by arranging a drying filter screen, matching with the sliding connection of the drying filter screen with a baffle and a fixed box, the elasticity of a spring to the baffle, the traction of a first fan to wind and the communication of an air outlet pipe with the shell of an anti-islanding cabinet, under the induction of a humidity sensor, dust and moisture entering the anti-islanding cabinet can be blown off when the humidity in the anti-islanding cabinet exceeds a set range, so that the phenomena that the dust influences the heat dissipation of the anti-islanding cabinet and the leakage short circuit of the anti-islanding cabinet caused by the moisture are avoided, and the normal use of the anti-islanding cabinet is ensured; by arranging the radiating fins, the first fan is matched with the traction of wind, the blowing of the second fan on the radiating pipe, the communication of the radiating pipe, the infusion pipe and the liquid guide pipe and the fixed connection of the radiating fins and the cooling box, under the induction of the temperature sensor, when the temperature in the anti-islanding cabinet exceeds the set temperature range, the anti-islanding cabinet can be rapidly and efficiently radiated, so that the occurrence of fire disaster is avoided;

the device can realize the heat dissipation and moisture prevention functions when in use, but can only dissipate heat of a single anti-islanding protector when in actual use, and is not suitable for being used in a distributed photovoltaic power generation scene, the corresponding anti-islanding protectors are required to be installed in different distribution areas in the distributed photovoltaic power generation, the existing anti-islanding protector cannot overlap the anti-islanding protectors at a plurality of positions simultaneously, gaps are reserved, and air channels formed after overlapping the anti-islanding protectors cannot be utilized for heat dissipation, so that the device is poor in functionality.

Therefore, we make improvements to this and propose a distributed photovoltaic anti-islanding protection device.

Disclosure of Invention

The utility model aims at: the anti-islanding protection device aims at solving the problems that the existing anti-islanding protection device is not suitable for being used in a distributed photovoltaic power generation scene and cannot utilize an air duct formed after a plurality of anti-islanding protectors are overlapped to dissipate heat.

In order to achieve the above object, the present utility model provides the following technical solutions:

the distributed photovoltaic anti-islanding protection device is used for improving the problems.

The application is specifically such that:

including the bottom plate, the middle fixedly connected with supporting seat of bottom plate, the top fixed mounting of supporting seat has the backup pad, anti-islanding protector has been placed to the inside of backup pad, anti-islanding protector's outside fixed mounting has the connecting frame, and the outside of backup pad is provided with the dustcoat, the opening has been seted up to the rear side of dustcoat, and the gas pocket has all been seted up to the left and right sides of dustcoat below.

As the preferred technical scheme of this application, the fixed surface of bottom plate is provided with the baffle, the fixed surface of bottom plate is provided with the front surface of baffle and the back surface laminating each other of dustcoat, the front surface of dustcoat and the front surface parallel and level of bottom plate and supporting seat.

As the preferred technical scheme of this application, the inside fixed mounting of supporting seat has the spring, the top fixedly connected with bracing piece of spring, bracing piece evenly distributed on the surface of supporting seat.

As the preferred technical scheme of this application, backup pad symmetric distribution is in the left and right sides at supporting seat top, prevents island protector's left and right sides and backup pad laminating mutually.

As the preferred technical scheme of this application, the fixed surface mounting of backup pad has the heat-conducting plate, the fin is installed to the surface equidistance of heat-conducting plate, and the through-hole has been seted up to the surface of backup pad.

As the preferred technical scheme of this application, the position and the adjacent two island protection ware that prevent of through-hole are alternately distributed, prevent island protection ware highly be less than the height of connecting frame.

As the preferred technical scheme of this application, the position of anti-islanding protector corresponds with the position of fin mutually, fin and through-hole are alternate distribution in the backup pad.

Compared with the prior art, the utility model has the beneficial effects that:

in the scheme of the application:

1. through the installation that sets up and the connection frame of both sides around the anti-islanding protector for when the anti-islanding protector overlap joint each other, there is the space between two adjacent anti-islanding protectors, so that follow-up heat dissipation, and the device is applicable to the use of distributed photovoltaic power generation scene, can concentrate the anti-islanding protector in a plurality of distribution areas, and guarantee that two adjacent anti-islanding protectors after placing can not laminate each other, solved current anti-islanding protection device and be not applicable to the use of distributed photovoltaic power generation scene; the device can also avoid overlarge contact area between the bottommost anti-islanding protector and the supporting seat through the supporting rods uniformly distributed on the supporting seat, so that heat accumulation is avoided, and excessive heat on the ground can be prevented from being transferred to the bottom of the bottommost anti-islanding protector;

2. through the heat-conducting plate and the fin that set up to and the through-hole that alternately distributes of heat-conducting plate, make the device can guarantee that the space between two adjacent anti-islanding protectors can communicate each other with the cavity that backup pad and dustcoat formed, the wind channel that forms through cavity and space, make the device can cool down to the anti-islanding protector of a plurality of positions simultaneously through external fan and tuber pipe, promoted the functionality of device, solved current anti-islanding protector and can not utilize the wind channel that forms after a plurality of anti-islanding protectors overlap joint to dispel the heat defect.

Drawings

Fig. 1 is a schematic diagram of an overall splicing structure of a distributed photovoltaic anti-islanding protection device provided by the application;

fig. 2 is a schematic diagram of an anti-islanding protector and a connection frame connection structure of the distributed photovoltaic anti-islanding protection device provided by the application;

fig. 3 is a schematic diagram of a split structure of an outer cover and a bottom plate of the distributed photovoltaic anti-islanding protection device provided by the application;

fig. 4 is a schematic diagram of a split structure of a heat conducting plate and a heat dissipating fin of the distributed photovoltaic anti-islanding protection device provided by the application;

fig. 5 is a schematic diagram of a connection structure of a supporting seat and a supporting rod of the distributed photovoltaic anti-islanding protection device.

The figures indicate: 1. a bottom plate; 2. a baffle; 3. a support base; 4. a support plate; 5. an outer cover; 6. a heat conductive plate; 7. a heat sink; 8. a through hole; 9. an anti-islanding protector; 10. a connection frame; 11. air holes; 12. a spring; 13. a support rod; 14. an opening.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model.

Thus, the following detailed description of the embodiments of the utility model is not intended to limit the scope of the utility model, as claimed, but is merely representative of some embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, under the condition of no conflict, the embodiments of the present utility model and the features and technical solutions in the embodiments may be combined with each other.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, the terms "upper", "lower", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or an azimuth or a positional relationship conventionally put in use of the inventive product, or an azimuth or a positional relationship conventionally understood by those skilled in the art, such terms are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element to be referred must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Example 1:

as shown in fig. 1, fig. 2, fig. 4, this embodiment provides a distributed photovoltaic anti-islanding protection device, including bottom plate 1, the middle fixedly connected with supporting seat 3 of bottom plate 1, the top fixed mounting of supporting seat 3 has backup pad 4, anti-islanding protector 9 has been placed to the inside of backup pad 4, the outside fixed mounting of anti-islanding protector 9 has connecting frame 10, the outside of backup pad 4 is provided with dustcoat 5, opening 14 has been seted up to the rear side of dustcoat 5, the gas pocket 11 has all been seted up to the left and right sides below dustcoat 5, through anti-islanding protector 9 and connecting frame 10 of stacking distribution on supporting seat 3, make and keep the space between the anti-islanding protector 9 of adjacent two places, so that follow-up formation wind channel keeps ventilation effect, avoid the heat to store up, simultaneously, the device can overlap joint a plurality of anti-islanding protectors 9, make the device be applicable to the use of distributed photovoltaic power generation scene, can concentrate storage to anti-islanding protector 9 in the different distribution areas.

Example 2:

the scheme of example 1 is further described in conjunction with the specific operation described below:

as shown in fig. 1 and 3, as a preferred embodiment, further, on the basis of the above manner, a baffle plate 2 is fixedly arranged on the surface of the bottom plate 1, the front surface of the bottom plate 1, on which the baffle plate 2 is fixedly arranged, is attached to the rear surface of the outer cover 5, the front surface of the outer cover 5 is flush with the front surfaces of the bottom plate 1 and the supporting seat 3, and the baffle plate 2 ensures that the outer cover 5 can be kept stable after being installed, so as to ensure the stability of the air duct in the device.

As shown in fig. 2 and 5, as a preferred embodiment, further, on the basis of the above manner, a spring 12 is fixedly installed inside the supporting seat 3, a supporting rod 13 is fixedly connected above the spring 12, the supporting rod 13 is uniformly distributed on the surface of the supporting seat 3, the spring 12 can support the supporting rod 13, and the supporting rod 13 supports the anti-islanding protector 9, so that the lowest anti-islanding protector 9 is in contact with the supporting seat 3 as little as possible, and heat transfer is reduced.

As shown in fig. 1, 3 and 4, as a preferred embodiment, further, on the basis of the above manner, the support plates 4 are symmetrically distributed on the left and right sides of the top of the support base 3, the left and right sides of the anti-islanding protector 9 are attached to the support plates 4, and the heat dissipation components are supported by the support plates 4, so that the heat dissipation efficiency of the device to the anti-islanding protectors 9 is improved.

As shown in fig. 3 and 4, as a preferred embodiment, further, on the basis of the above manner, the surface of the supporting plate 4 is fixedly provided with the heat conducting plate 6, the surface of the heat conducting plate 6 is equidistantly provided with the cooling fins 7, the surface of the supporting plate 4 is provided with the through holes 8, and the air flow can flow through the gaps of the two adjacent anti-islanding protectors 9 through the through holes 8, so that the device can blow away the heat accumulated in the gaps of the two adjacent anti-islanding protectors 9.

As shown in fig. 2, as a preferred embodiment, further, on the basis of the above manner, the positions of the through holes 8 and the adjacent two anti-islanding protectors 9 are distributed alternately, and the height of the anti-islanding protectors 9 is smaller than that of the connecting frame 10, so that the anti-islanding protectors 9 and the adjacent anti-islanding protectors 9 can flow out of the gaps after being stacked and placed, so that efficient heat dissipation can be performed subsequently.

As shown in fig. 3, as a preferred embodiment, further, on the basis of the above manner, the positions of the anti-islanding protectors 9 and the positions of the cooling fins 7 correspond to each other, and the cooling fins 7 and the through holes 8 are distributed at intervals on the support plate 4, so that the positions of the through holes 8 and the gap positions of the two adjacent anti-islanding protectors 9 correspond to each other, thereby enabling the device to realize efficient ventilation.

Specifically, this distribution formula photovoltaic anti-islanding protection device when using: as shown in fig. 1, 2 and 3, the connecting frames 10 are installed on the front side and the rear side of the anti-islanding protector 9, when the connecting frames 10 on the outer sides of the anti-islanding protectors 9 are stacked, gaps are reserved between the two adjacent anti-islanding protectors 9, so that the device is suitable for use scenes of distributed photovoltaic power generation, the anti-islanding protectors 9 in each distribution area can be placed in a concentrated mode, as shown in fig. 5, the device can support the supporting rods 13 through the springs 12, the lowest anti-islanding protector 9 and the connecting frames 10 of the device can be supported by the supporting rods 13 which are uniformly distributed, and therefore the lowest anti-islanding protector 9 and the connecting frames 10 of the device are guaranteed to be in contact with the supporting seat 3 as little as possible, and heat transfer of the ground is reduced to the lowest anti-islanding protector 9;

as shown in fig. 1, fig. 2, fig. 3 and fig. 4, the device supports the rear side of the outer cover 5 through the baffle plate 2 on the bottom plate 1, so that the outer cover 5 can be blocked by the baffle plate 2 and the connecting frame 10 on the front side of the anti-islanding protector 9, the outer cover 5 can only move up and down after being installed, the gaps of two adjacent anti-islanding protectors 9 are communicated with the cavities between the supporting plate 4 and the outer cover 5 through the through holes 8, an air duct is formed, the air duct is matched with the heat conducting plate 6 and the heat radiating fin 7 which are mutually corresponding to the positions of the anti-islanding protectors 9 through the external fan and the air duct, the air duct of the fan is connected at the positions of the air holes 11, and the heat accumulated in the adjacent anti-islanding protectors 9 is blown away.

The above embodiments are only for illustrating the present utility model and not for limiting the technical solutions described in the present utility model, and although the present utility model has been described in detail in the present specification with reference to the above embodiments, the present utility model is not limited to the above specific embodiments, and thus any modifications or equivalent substitutions are made to the present utility model; all technical solutions and modifications thereof that do not depart from the spirit and scope of the utility model are intended to be included in the scope of the appended claims.

Claims

1. The utility model provides a distributed photovoltaic anti-islanding protection device, includes bottom plate (1), its characterized in that, the centre fixedly connected with supporting seat (3) of bottom plate (1), the top fixed mounting of supporting seat (3) has backup pad (4), anti-islanding protector (9) have been placed to the inside of backup pad (4), the outside fixed mounting of anti-islanding protector (9) has connecting frame (10), and the outside of backup pad (4) is provided with dustcoat (5), opening (14) have been seted up to the rear side of dustcoat (5), and gas pocket (11) have all been seted up to the left and right sides of dustcoat (5) below.

2. The distributed photovoltaic anti-islanding protection device according to claim 1, wherein a baffle (2) is fixedly arranged on the surface of the bottom plate (1), the front surface of the bottom plate (1) fixedly provided with the baffle (2) is mutually attached to the rear surface of the outer cover (5), and the front surface of the outer cover (5) is flush with the front surfaces of the bottom plate (1) and the supporting seat (3).

3. The distributed photovoltaic anti-islanding protection device according to claim 2, characterized in that springs (12) are fixedly installed in the supporting seat (3), supporting rods (13) are fixedly connected to the upper portions of the springs (12), and the supporting rods (13) are uniformly distributed on the surface of the supporting seat (3).

4. The distributed photovoltaic anti-islanding protection device according to claim 1, wherein the supporting plates (4) are symmetrically distributed on the left side and the right side of the top of the supporting seat (3), and the left side and the right side of the anti-islanding protector (9) are mutually attached to the supporting plates (4).

5. The distributed photovoltaic anti-islanding protection device according to claim 4, characterized in that a heat conducting plate (6) is fixedly arranged on the surface of the supporting plate (4), radiating fins (7) are arranged on the surface of the heat conducting plate (6) at equal intervals, and through holes (8) are formed in the surface of the supporting plate (4).

6. The distributed photovoltaic anti-islanding protection device according to claim 5, characterized in that the position of the through hole (8) is distributed alternately with two adjacent anti-islanding protectors (9), and the height of the anti-islanding protectors (9) is smaller than the height of the connecting frame (10).

7. A distributed photovoltaic anti-islanding protection device as claimed in claim 6, characterized in that the position of said anti-islanding protector (9) corresponds to the position of the heat sink (7), said heat sink (7) and through holes (8) being distributed at intervals on the support plate (4).