New energy photovoltaic power station primary frequency modulation on-line monitoring device

Abstract

The utility model relates to a primary frequency modulation on-line monitoring device for a new energy photovoltaic power station, which comprises a device cabinet, an equipment main body is arranged on two support plates fixed in the device cabinet, a cabinet door is arranged on the front surface of the device cabinet, the cabinet door is contacted with the support plates when being closed, and a heat conduction aluminum plate attached to the equipment main body is fixed on the support plates. When the heat dissipation device works, the heat conduction aluminum plate absorbs heat in a concentrated mode, the draught fan is started during heat dissipation, the air guide pipe introduces air flow, the air flow can only be exhausted from the air outlet nozzles and the air outlets of the two supporting plates in sequence and then is exhausted from the draught fan, and in the process, the air flow can conduct concentrated and efficient convection heat dissipation on the heat dissipation aluminum sheet. Therefore, the heat conduction aluminum plate can absorb the equipment body and some heat dissipated into the air more quickly, heat damage is reduced, the problems that in the prior art, airflow distribution is not concentrated, and the heat dissipation efficiency is not high are solved, and meanwhile, some external tiny dust is prevented from damaging the equipment body.

Description

Technical Field

[0001] The utility model relates to the technical field of safety equipment for photovoltaic power stations, and in particular to a primary frequency modulation online monitoring device for a new energy photovoltaic power station. Background Art

[0002] The primary frequency regulation of a photovoltaic power station refers to when the frequency of the power grid deviates from the rated value, through the corresponding frequency regulation equipment, such as the most common inverter, the change of the power grid frequency can be limited and the power grid frequency can be maintained within a stable range. At the same time, it needs to be used with frequency monitoring equipment. When working in linkage, the frequency fluctuation monitor can transmit the monitored frequency data to the inverter in real time. According to these data, the inverter can adjust the frequency and voltage of its output AC power to better match the load requirements, thereby maintaining the stability of the power system. At present, in order to facilitate management and maintenance, some places will install the online monitoring device of the primary frequency regulation and the frequency regulation device in the same cabinet to form a complete cabinet of the online monitoring device of the primary frequency regulation. This can reduce the dispersion of the equipment and facilitate centralized monitoring and operation. When installing, it can be installed using a platform or a bracket. The survey found that the platform installation method is more convenient and convenient for maintenance. For example, the Chinese patent number CN214756032U discloses a cabinet for photovoltaic inverters that is easy to repair. Multiple platforms can install multiple devices, which is very practical.

[0003] However, after searching, the applicant found that installing multiple devices in one cabinet also has certain disadvantages. When there are more devices inside the cabinet, the heat of the equipment itself will also increase. This heat will be dissipated into the air, causing the temperature inside the cabinet to be very high, which may then have an adverse effect on the equipment. For conventional fan heat dissipation, after the airflow enters the cabinet, the airflow distribution is scattered and not concentrated enough, the wind force is not strong enough, the efficiency is reduced, and the airflow will come into contact with a large area of ​​the equipment itself, which may bring fine dust to the surface of the equipment, causing the hidden danger of equipment damage.

[0004] Therefore, in view of the above problems, it is necessary for the applicant to design an online monitoring device for primary frequency regulation of a new energy photovoltaic power station to solve the problem. Utility Model Content

[0005] The purpose of the utility model is to provide a new energy photovoltaic power station primary frequency modulation online monitoring device to solve the problems mentioned in the above background technology.

[0006] To solve the above technical problems, the utility model provides an on-line monitoring device for primary frequency modulation of a new energy photovoltaic power station, which includes a device cabinet. On two support plates fixed inside the device cabinet, there is a device main body installed. On the front of the device cabinet, there is a cabinet door. When the cabinet door is closed, it contacts the support plate. On the support plate, there is a heat-conducting aluminum plate that fits the device main body. On one side of the heat-conducting aluminum plate, there are heat-dissipating aluminum fins arranged and fixed. On the top of the device cabinet at the corresponding position of the heat-conducting aluminum plate, there is a fan installed. On the support plate, there is a row of air outlets opened, and at the top of the support plate, there is an air outlet nozzle installed at each air outlet. Each air outlet nozzle is located on both sides of the heat-dissipating aluminum fins. At the bottom of the support plate located below, there is a duct installed. The upper end opening of the duct encloses the air outlet inside, and the other end opening passes through one side of the device cabinet.

[0007] Preferably, on one side of the device cabinet above the duct, there is a shielding plate installed, and on the inner wall of the opening through which the duct passes on one side of the device cabinet, there is a sealing ring bonded.

[0008] Preferably, a first filter screen is installed at the inlet at the lower end of the duct, and a second filter screen is installed at the outlet at the upper end of the duct. The pore diameter of the second filter screen is smaller than that of the first filter screen, and a desiccant granule packet is placed inside the duct.

[0009] Preferably, both sides of the heat-dissipating aluminum fins are designed with inclined surfaces to increase the heat dissipation area, and the inner wall of the air outlet nozzle is also designed with an inclined surface, and the top opening of the air outlet nozzle is designed to be a contracted type.

[0010] Preferably, on one side of the heat-conducting aluminum plate, there is an elastic heat-conducting silica gel sheet bonded, and the heat-conducting silica gel sheet is closely attached to the side wall of the device main body.

[0011] Preferably, on one side of the support plate, there is a pressing pad installed. The pressing pad is made of rubber and is closely attached to the inner wall of the cabinet door.

[0012] Preferably, the bottom end of the support plate is butt-jointed with a bolt plate fixed on both sides of the inner wall of the device cabinet using bolts, and the bolt plate on one side of the duct is also butt-jointed with the bottom end of the support plate using bolts.

[0013] The beneficial effects of the utility model are as follows.

[0014] 1. When the utility model is working, the heat-conducting aluminum plate absorbs heat intensively. When dissipating heat, the fan starts, and the duct introduces air flow. The air flow can only be discharged from the air outlet nozzles and air outlets of the two support plates in sequence, and then discharged from the fan. In this process, the air flow can conduct intensive and efficient convective heat dissipation to the heat-dissipating aluminum fins, and then the heat-conducting aluminum plate can absorb the heat of the device main body and some heat dissipated into the air more quickly, reducing heat damage, avoiding the problems of scattered and non-concentrated air flow distribution and low heat dissipation efficiency in the traditional technology, and at the same time avoiding damage to the device main body caused by some small dust in the outside world.

[0015] 2. In the dust and moisture protection design of the utility model, filter 2 and filter 1 can block dust when airflow enters, preventing dust from entering the interior. At the same time, the two-layer design can reduce the burden on the filter, and the desiccant particle package can absorb moisture introduced into the airflow to prevent too much moisture from entering the interior. Finally, the guard plate and the sealing ring can further enhance the protection and sealing effect. For example, it can enhance the protection against rain and moisture entry when used outdoors.

[0016] 3. The utility model further strengthens the heat dissipation design by increasing the surface area through the inclined surface design on both sides of the heat dissipation aluminum sheet, which can increase the heat dissipation area and convection effect, and the top opening of the air outlet is contracted to make the air flow faster. When the airflow contacts the heat dissipation aluminum sheet, it can more efficiently take away the surface heat, thereby further improving the heat dissipation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0018] Figure 1 It is an overall stereogram of a preferred embodiment of the utility model;

[0019] Figure 2 It is an overall three-dimensional cutaway view of a preferred embodiment of the utility model. Figure 1 ;

[0020] Figure 3 It is an overall three-dimensional cutaway view of a preferred embodiment of the utility model. Figure 2 ;

[0021] Figure 4 The support plate, air duct and heat-conducting aluminum plate of the preferred embodiment of the utility model are three-dimensional Figure 1 ;

[0022] Figure 5 The support plate, air duct and heat-conducting aluminum plate of the preferred embodiment of the utility model are three-dimensional Figure 2 ;

[0023] Figure 6 This is a three-dimensional diagram of a heat-conducting aluminum plate of a support plate of a preferred embodiment of the utility model;

[0024] Figure 7 It is a three-dimensional diagram of a heat-conducting aluminum plate of a preferred embodiment of the utility model;

[0025] Figure 8 It is a cross-sectional view of a heat-conducting aluminum plate of a preferred embodiment of the utility model.

[0026] In the figure: 1, device cabinet; 2, support plate; 3, cabinet door; 4, equipment main body; 5, heat-conducting aluminum plate; 6, heat-dissipating aluminum fin; 7, fan; 8, air outlet; 9, air outlet nozzle; 10, air duct; 11, baffle plate; 12, first filter screen; 13, second filter screen; 14, sealing ring; 15, heat-conducting silica gel sheet; 16, pressing pad; 17, desiccant granule package. Specific embodiments

[0027] Now, the present utility model will be further described in detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only showing the basic structure of the present utility model in a schematic manner, so they only show the components related to the present utility model.

[0028] As Figures 1-8 shown, a primary frequency modulation online monitoring device for a new energy photovoltaic power station of the present utility model includes: a device cabinet 1, an equipment main body 4 is installed on two support plates 2 fixed inside the device cabinet 1, a cabinet door 3 is installed on the front of the device cabinet 1, when the cabinet door 3 is closed, it contacts the support plate 2, a heat-conducting aluminum plate 5 that fits the equipment main body 4 is fixed on the support plate 2, heat-dissipating aluminum fins 6 are arranged and fixed on one side of the heat-conducting aluminum plate 5, a fan 7 is installed at the corresponding position of the heat-conducting aluminum plate 5 on the top of the device cabinet 1, a row of air outlets 8 are opened on the support plate 2, and an air outlet nozzle 9 is installed at the top of the support plate 2 at each air outlet, each air outlet nozzle 9 is located on both sides of the heat-dissipating aluminum fin 6, a duct 10 is installed at the bottom of the lower support plate 2, the upper opening of the duct 10 encloses the air outlet 8 inside, and the other end opening passes through one side of the device cabinet 1.

[0029] The specific operation is as follows. Through the above structural design of the present utility model, when in use, two equipment main bodies 4 for monitoring and frequency modulation are installed on two support plates 2, the equipment main body 4 contacts the heat-conducting aluminum plate 5, after connecting the lines, the cabinet door 3 is closed, and the contact between the cabinet door 3 and the support plate 2 ensures that the air comes out from the air outlet 8. During operation, the heat-conducting aluminum plate 5 can absorb the heat of the equipment main body 4 and transfer it to the heat-dissipating aluminum fins 6. Then, through the temperature sensor installed inside, when the internal temperature is relatively high, the fan 7 is started. When starting, the duct 10 introduces air flow, and the air flow can only be discharged from the air outlet nozzles 9 and air outlets 8 of the two support plates in sequence, and then discharged from the fan 7. In this process, the air flow can conduct concentrated and efficient convective heat dissipation to the heat-dissipating aluminum fins 6, and then the heat-conducting aluminum plate 5 can absorb the heat of the equipment main body 4 and some heat dissipated into the air more quickly, reducing heat damage, avoiding the scattered and non-concentrated air flow distribution in the traditional technology. At the same time, when the external air flow enters, all the air flow is concentrated and discharged from the air outlet nozzles 9, and only a small amount contacts the equipment main body 4, avoiding damage to the equipment main body 4 caused by some fine dust in the outside world. It should be noted that the temperature sensor is linked and electrically connected to the fan 7, which is a prior art means.

[0030] A protective plate 11 is installed above the air duct 10 on one side of the device cabinet 1, and a sealing ring 14 is bonded to the inner wall of the opening through which the air duct 10 passes on one side of the device cabinet 1. A filter screen 12 is installed at the inlet of the lower end of the air duct 10, and a filter screen 2 13 is installed at the outlet of the upper end of the air duct 10. The mesh diameter of the filter screen 2 13 is smaller than that of the filter screen 12, and a desiccant particle bag 17 is placed inside the air duct 10.

[0031] The specific operation is as follows. In the dust and moisture protection design, filter screen 2 13 and filter screen 1 12 can block dust when the airflow enters to prevent dust from entering the interior. At the same time, the different apertures of the two layers of filters can achieve a double filtering effect and reduce the burden on the filters. The desiccant particle package 17 can absorb the moisture introduced into the airflow to prevent too much moisture from entering the interior. At the same time, after the filter screen 2 13 and the filter screen 1 12 are removed, the desiccant particle package 17 can also be taken out and replaced. Finally, the guard plate 11 and the sealing ring 14 can further enhance the protection and sealing effect. For example, outdoor use can enhance the protection against rain and moisture ingress, which is very practical. It should be noted that when the device cabinet 1 is used outdoors, a top plate can be added to its top. This is a prior art design.

[0032] Both sides of the heat dissipation aluminum sheet 6 are designed with bevels to increase the heat dissipation area, and the inner wall of the air outlet nozzle 9 is also designed with bevels, and the top opening of the air outlet nozzle 9 is designed to be retractable.

[0033] The specific operation is as follows: in the design of further strengthening the heat dissipation, the surface area is increased by designing the inclined surfaces on both sides of the heat dissipation aluminum sheet 6, so that the heat dissipation area and convection effect can be increased, and the top opening of the air outlet nozzle 9 is contracted to make the air flow speed faster. When the airflow contacts the heat dissipation aluminum sheet 6, its surface heat can be more efficiently taken away, thereby further improving the heat dissipation efficiency.

[0034] An elastic thermally conductive silicone sheet 15 is bonded to one side of the thermally conductive aluminum plate 5, and the thermally conductive silicone sheet 15 fits tightly against the side wall of the equipment body 4. A compression pad 16 is installed on one side of the support plate 2, and the compression pad 16 is made of rubber and fits tightly against the inner wall of the cabinet door 3. The bottom end of the support plate 2 is connected to the bolt plates fixed on both sides of the inner wall of the device cabinet 1 with bolts, and the bolt plate on one side of the air duct 10 is also connected to the bottom end of the support plate 2 with bolts.

[0035] The specific operation is as follows: in terms of stability and tightness design, the thermally conductive silicone sheet 15 makes the thermally conductive aluminum plate 5 and the equipment body 4 contact more closely, and the thermal conductivity effect is better, while the compression pad 16 makes the support plate 2 and the cabinet door 3 tighter, ensuring that the airflow is discharged from the air outlet 8. Finally, the support plate 2 is fixed to the air duct 10 and the device cabinet 1 by bolts, which is very stable, and the detachable design facilitates subsequent maintenance.

[0036] Inspired by the above ideal embodiments of the present utility model, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this utility model. The technical scope of this utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An on-line monitoring device for primary frequency regulation of a new energy photovoltaic power station, characterized in that, Including: A device cabinet (1), on which two supporting plates (2) fixed inside are installed with a device main body (4). A cabinet door (3) is installed on the front of the device cabinet (1). When the cabinet door (3) is closed, it contacts the supporting plate (2). A heat-conducting aluminum plate (5) that fits the device main body (4) is fixed on the supporting plate (2). Heat-dissipating aluminum fins (6) are arranged and fixed on one side of the heat-conducting aluminum plate (5). A fan (7) is installed at the corresponding position of the heat-conducting aluminum plate (5) on the top of the device cabinet (1). An exhaust air outlet (8) is formed on the supporting plate (2), and air outlet nozzles (9) are installed at the top of the supporting plate (2) at each air outlet (8). Each air outlet nozzle (9) is located on both sides of the heat-dissipating aluminum fins (6). A duct (10) is installed at the bottom of the lower supporting plate (2). The upper opening of the duct (10) encloses the air outlet (8) inside, and the other opening passes through one side of the device cabinet (1).

2. The on-line monitoring device for primary frequency regulation of a new energy photovoltaic power station according to claim 1, characterized in that A shielding plate (11) is installed above the duct (10) on one side of the device cabinet (1), and a sealing ring (14) is adhesively bonded to the inner wall of the opening through which the duct (10) passes on one side of the device cabinet (1).

3. The on-line monitoring device for primary frequency regulation of a new energy photovoltaic power station according to claim 2, characterized in that A first filter screen (12) is installed at the inlet at the lower end of the duct (10), and a second filter screen (13) is installed at the outlet at the upper end of the duct (10). The pore diameter of the second filter screen (13) is smaller than that of the first filter screen (12); A desiccant granule packet (17) is placed inside the duct (10).

4. The on-line monitoring device for primary frequency regulation of a new energy photovoltaic power station according to claim 1, characterized in that Both sides of the heat-dissipating aluminum fins (6) are designed with inclined surfaces to increase the heat dissipation area, and the inner wall of the air outlet nozzle (9) is also designed with an inclined surface, and the top opening of the air outlet nozzle (9) is designed to be a contracted type.

5. The on-line monitoring device for primary frequency regulation of a new energy photovoltaic power station according to claim 1, characterized in that An elastic heat-conducting silica gel sheet (15) is adhesively bonded to one side of the heat-conducting aluminum plate (5), and the heat-conducting silica gel sheet (15) is closely attached to the side wall of the device main body (4).

6. The on-line monitoring device for primary frequency regulation of a new energy photovoltaic power station according to claim 1, characterized in that A pressing pad (16) is installed on one side of the supporting plate (2). The pressing pad (16) is made of rubber and is closely attached to the inner wall of the cabinet door (3).

7. The on-line monitoring device for primary frequency regulation of a new energy photovoltaic power station according to claim 1, characterized in that The bottom end of the supporting plate (2) is butt-jointed with the bolt plates fixed on both sides of the inner wall of the device cabinet (1) by bolts, and the bolt plate on one side of the duct (10) is also butt-jointed with the bottom end of the supporting plate (2) by bolts.

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