Dynamic reactive power compensation device capable of responding quickly

Abstract

The utility model relates to the technical field of reactive power compensation devices, and discloses a dynamic reactive power compensation device capable of quickly responding, which comprises a compensation cabinet, an SVG (static var generator) with a cooling fan is fixedly mounted in the compensation cabinet, a condensation assembly is arranged at the bottom of the compensation cabinet, and the condensation assembly comprises a shell. A semiconductor chilling plate is fixedly installed in the shell, the shell is connected with cooling fins through a rear sealing plate, a partition plate is arranged in the shell, heat dissipation fins are fixedly connected to the partition plate, and a second fan fixedly installed on the shell is arranged on the front side of the heat dissipation fins. The lower part of the compensation cabinet is fixedly provided with a single-chip microcomputer controller, and the top of the compensation cabinet is fixedly provided with a temperature and humidity sensor. Heat exchange air can be cooled and dehumidified through the semiconductor refrigeration assembly, so that the heat exchange efficiency is improved, internal equipment is protected, the condensation assembly is controlled to be started through the single-chip microcomputer controller, and more energy is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of reactive power compensation devices, in particular to a dynamic reactive power compensation device capable of rapid response. Background Art

[0002] Dynamic reactive power compensation device, namely static synchronous compensator, also known as static reactive power generator. Dynamic reactive power compensation device has become an important device in modern flexible AC power transmission system with its lower harmonics, higher efficiency and faster dynamic response. This device is mainly used to compensate for the frequently fluctuating reactive power in the power grid, suppress the power grid flicker and harmonics, improve the power factor of the power grid, improve the power supply quality and efficiency of the distribution network, and then reduce network losses, which is conducive to extending the service life of the transmission line.

[0003] Existing dynamic reactive power compensation devices all combine multiple SVG static reactive power generators in a compensation cabinet to form a dynamic reactive power compensation cabinet dedicated to the power grid. When the existing dynamic reactive power compensation cabinet is in use, the SVG static reactive power generator will have its own cooling fan for heat dissipation when it is in stable operation, and cooperate with the air-cooled heat dissipation components on the compensation cabinet to dissipate heat, thereby ensuring the stable operation of the equipment inside the compensation cabinet. Due to different use environments, the temperature and humidity of the external air of the above-mentioned dynamic reactive power compensation cabinet are different, which leads to different temperatures and humidity of the fresh air entering the cabinet. In summer, the stable temperature of the air outside the cabinet is relatively high, which affects the heat dissipation efficiency of the SVG static reactive power generator. When it is rainy weather, the air outside the cabinet is humid. When the over-humid air enters the compensation cabinet, it is easy to cause the internal structure of the compensation cabinet to be damp. In order to solve the above-mentioned problems, a dynamic reactive power compensation device with rapid response is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a dynamic reactive power compensation device with fast response in order to solve the above-mentioned problems.

[0005] The technical solution adopted by the utility model is as follows: a dynamic reactive power compensation device capable of rapid response, comprising a compensation cabinet, a cabinet door is hingedly connected to the front side of the compensation cabinet, a plurality of SVG static reactive power generators with self-contained cooling fans are fixedly installed inside the compensation cabinet, a condensation assembly is arranged at the bottom of the compensation cabinet, a fan 1 fixedly installed on the compensation cabinet is arranged on the top of the condensation assembly,

[0006] The condensing assembly comprises a shell, a semiconductor refrigeration sheet is fixedly installed inside the shell, a rear sealing plate is fixedly installed at the rear of the shell, a cooling fin is fixedly connected to the rear sealing plate, the cooling fin is in contact with the cold end of the semiconductor refrigeration sheet, a partition is arranged inside the shell, a heat dissipation fin is fixedly connected to the partition, the heat dissipation fin is in contact with the hot end of the semiconductor refrigeration sheet, and a fan 2 fixedly installed on the shell is arranged on the front side of the heat dissipation fin;

[0007] A single-chip microcomputer controller is fixedly installed at the lower part of the compensation cabinet, the semiconductor refrigeration plate and the second fan are electrically connected to the single-chip microcomputer controller, and a temperature and humidity sensor is fixedly installed on the top of the compensation cabinet, and the temperature and humidity sensor is electrically connected to the single-chip microcomputer controller.

[0008] In a preferred embodiment, four ends of the bottom of the compensation cabinet are provided with raised feet.

[0009] In a preferred embodiment, an air inlet hole 1 is provided at the lower portion of the rear side wall of the compensation cabinet.

[0010] In a preferred embodiment, the cabinet door is provided with a plurality of air outlet holes corresponding to the SVG static VAR generator.

[0011] In a preferred embodiment, a second air inlet hole is provided at the bottom of the compensation cabinet, and a second air outlet hole is provided at the lower portion of the front side wall of the compensation cabinet. Both the second air inlet hole and the second air outlet hole are connected to the shell.

[0012] In a preferred embodiment, a water collecting pan fixedly mounted on the compensation cabinet is provided at the lower portion of the condensing assembly, a drain pipe is fixedly connected to the lowest point of the bottom of the water collecting pan, and the drain pipe is connected to the condensate collection main pipe of the factory.

[0013] In a preferred embodiment, a protective net fixedly mounted on the compensation cabinet is provided on the upper portion of the fan 1.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0015] 1. In the utility model, the cold end of the semiconductor refrigeration plate is used for cooling, and the cold energy is conducted back to the cooling fins. At this time, the air entering the compensation cabinet will contact the cooling fins. Therefore, when the air temperature is high in summer, the air entering the compensation cabinet is cooled down, thereby avoiding the high temperature of the heat exchange air and affecting the heat dissipation efficiency of the SVG static reactive generator. At the same time, when it is rainy weather, the condensing fins can condense the moisture in the air, thereby avoiding the heat exchange air being too humid and causing the internal equipment of the compensation cabinet to be damp, thereby protecting the internal equipment of the dynamic reactive compensation cabinet.

[0016] 2. In the utility model, a temperature sensor is used to detect the temperature and humidity of the outside air. When the set temperature and humidity are reached, the single-chip microcomputer controller can control the opening of the semiconductor refrigeration plate and the fan 2, thereby starting the air condensation device, and then cooling or dehumidifying the air. In this way, the semiconductor refrigeration plate can be controlled to start according to the weather, thereby avoiding the condensation device from being started all the time and saving electricity. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the internal structure of the utility model from a side view;

[0019] Figure 3 This is a schematic diagram showing the three-dimensional position structure of the air inlet hole 1 and the air inlet hole 2 in the utility model;

[0020] Figure 4 The utility model is a simplified schematic diagram of the three-dimensional structure of the water collecting tray and the drain pipe.

[0021] Markings in the figure: 1-compensation cabinet, 2-cabinet door, 3-SVG static VAR generator, 4-condensation component, 5-fan one, 6-housing, 7-semiconductor refrigeration plate, 8-rear cover, 9-cooling fins, 10-partition, 11-heat dissipation fins, 12-fan two, 13-single-chip microcomputer controller, 15-temperature and humidity sensor, 16-raised foot, 17-air inlet one, 18-air outlet one, 19-air inlet two, 20-air outlet two, 21-water collection tray, 22-drain pipe, 23-protective net. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] The following will be combined Figure 1-Figure 4 A fast-responding dynamic reactive power compensation device according to an embodiment of the utility model is described in detail.

[0024] Example:

[0025] The utility model provides a fast-response dynamic reactive power compensation device, referring to Figure 1 and Figure 2As shown, it includes a compensation cabinet 1, a cabinet door 2 is hinged on the front side of the compensation cabinet 1, and a plurality of SVG static reactive generators 3 with cooling fans are fixedly installed inside the compensation cabinet 1. This structure of the compensation cabinet 1, the cabinet door 2 and the plurality of SVG static reactive generators 3 with cooling fans constitute a dynamic reactive compensation device that can respond quickly.

[0026] It should be noted that the SVG static VAR generator 3 is an existing device, the specific model is PG-ASVG / 4L-400V-50K / M C1.0, and its body is equipped with a cooling fan. The specific structure has been disclosed and will not be elaborated in detail here.

[0027] refer to Figure 1 , Figure 2 and Figure 3 As shown, a fan 5 fixedly mounted on the compensation cabinet 1 is provided on the upper part of the condensing component 4, an air inlet 17 is provided on the lower part of the rear side wall of the compensation cabinet 1, and a plurality of air outlets 18 corresponding to the SVG static VAR generator 3 with a built-in cooling fan are provided on the cabinet door 2. This structure allows the outside air to enter the compensation cabinet 1 from the air inlet 17 through the fan 5, and then exchanges heat with the reactive compensation electrical equipment inside the compensation cabinet 1, and then discharges the hot air through the cooling fan built into the SVG static VAR generator 3, thereby completing the air cooling of the reactive compensation cabinet.

[0028] refer to Figure 2 As shown, a condensation assembly 4 is provided at the bottom of the compensation cabinet 1. The condensation assembly 4 includes a shell 6. A semiconductor refrigeration plate 7 is fixedly installed inside the shell 6. A rear sealing plate 8 is fixedly installed on the rear of the shell 6. A cooling fin 9 is fixedly connected to the rear sealing plate 8. The cooling fin 9 is in contact with the cold end of the semiconductor refrigeration plate 7. This structure energizes the semiconductor refrigeration plate 7. At this time, the cold end of the semiconductor refrigeration plate 7 will be cooled, and the cold amount is transferred back to the cooling fin 9. At this time, the air entering the compensation cabinet 1 will be in contact with the cooling fin 9. Therefore, when the air temperature is high in summer, the air entering the compensation cabinet 1 is cooled, thereby avoiding the high temperature of the heat exchange air and affecting the heat dissipation efficiency of the SVG static reactive generator 3. At the same time, when it is rainy weather, the condensation fin 9 can condense the moisture in the air, thereby avoiding the heat exchange air being too humid and causing the internal equipment of the compensation cabinet 1 to be damp, thereby protecting the internal equipment of the dynamic reactive compensation cabinet.

[0029] refer to Figure 2 As shown, a partition 10 is provided inside the shell 6, and a heat sink 11 is fixedly connected to the partition 10. The heat sink 11 is in contact with the hot end of the semiconductor cooling plate 7. A fan 2 12 fixedly mounted on the shell 6 is provided on the front side of the heat sink 11. The heat sink 11 of this structure conducts heat from the semiconductor cooling plate 7, and then the hot air after heat exchange with the heat sink 11 is discharged through the fan 2 12.

[0030] refer to Figure 1 and Figure 2 As shown, a single-chip microcomputer controller 13 is fixedly installed at the lower part of the compensation cabinet 1, and the semiconductor refrigeration plate 7 and the second fan 12 are electrically connected to the single-chip microcomputer controller 13. A temperature and humidity sensor 15 is fixedly installed on the top of the compensation cabinet 1, and the temperature and humidity sensor 15 is electrically connected to the single-chip microcomputer controller 13. In this structure, the temperature sensor 15 is used to detect the temperature and humidity of the outside air. When the set temperature and humidity are reached, the single-chip microcomputer controller 13 can control the opening of the semiconductor refrigeration plate 7 and the second fan 12, thereby starting the air condensation device, and then cooling or dehumidifying the air. In this way, the semiconductor refrigeration plate 7 can be controlled to start according to the weather, thereby avoiding the condensation device from being started all the time and saving electricity.

[0031] It should be noted that the above-mentioned semiconductor refrigeration chip 7, single-chip controller 13, temperature sensor 14 and temperature and humidity sensor 15 are all existing equipment. The model of the semiconductor refrigeration chip 7 is Peltier TEC1-12710, the model of the single-chip controller 13 is PMS152-SOP8, and the model of the temperature and humidity sensor 15 is FK-TH800.

[0032] refer to Figure 1 As shown, four ends of the bottom of the compensation cabinet 1 are provided with raised feet 16. This structure raises the feet 16 to leave air flow space between the bottom of the compensation cabinet 1 and the ground.

[0033] refer to Figure 1 and Figure 3 As shown, an air inlet hole 19 is provided at the bottom of the compensation cabinet 1, and an air outlet hole 20 is provided at the lower portion of the front side wall of the compensation cabinet 1. The air inlet hole 19 and the air outlet hole 20 are both connected to the shell 6. This structure utilizes the air inlet hole 19 to facilitate external air to enter the shell 6, thereby exchanging heat with the heat dissipating fins 11, and then uses the air outlet hole 20 to discharge the heat-exchanged air out of the shell 6.

[0034] refer to Figure 2 and Figure 4 As shown, the lower part of the condensing assembly 4 is provided with a water collecting tray 21 fixedly mounted on the compensation cabinet 1, and a drain pipe 22 is fixedly connected to the lowest point of the bottom of the water collecting tray 21, and the drain pipe 22 is connected to the condensate collecting main pipe of the factory. This structure utilizes the water collecting tray 21 to collect condensed water and discharges it into the condensate collecting main pipe through the drain pipe 22.

[0035] refer to Figure 1 and Figure 2 As shown, the upper part of the fan 5 is provided with a protective net 23 fixedly mounted on the compensation cabinet 1. This structure utilizes the protective net 23 to cover the upper part of the fan 5, thereby playing a safety protection role.

[0036] It should be noted that the above embodiments are designed to the single-chip microcomputer control system, which are all existing technologies and the principles are public. This application does not improve the specific control system, so it will not be introduced in detail here.

[0037] The implementation principle of a fast-response dynamic reactive power compensation device of the embodiment of the present application is as follows: when in use, a fan 5 is used to draw outside air into the compensation cabinet 1 from the air inlet 17, and then heat is exchanged with the reactive power compensation electrical equipment inside the compensation cabinet 1, and then the hot air is discharged through the cooling fan provided on the SVG static reactive power generator 3, thereby air-cooling the reactive power compensation cabinet. During air-cooling, a temperature sensor 15 is used to detect the temperature and humidity of the outside air. When the set temperature and humidity are reached, the single-chip controller 13 can control the opening of the semiconductor cooling sheet 7 and the fan 2 12, thereby starting the air cooling. Condensation device, at this time, the cold end of the semiconductor refrigeration plate 7 will cool, and the cold energy will be transferred back to the cooling fins 9. At this time, the air entering the compensation cabinet 1 will contact the cooling fins 9, so that when the air temperature is high in summer, the air entering the compensation cabinet 1 will be cooled, so as to avoid the high temperature of the heat exchange air affecting the heat dissipation efficiency of the SVG static reactive generator 3. At the same time, when it is rainy weather, the condensation fins 9 can condense the moisture in the air and discharge it from the compensation 1 through the water collecting tray 21 and the drain pipe 22, so as to avoid the heat exchange air being too humid and causing the internal equipment of the compensation cabinet 1 to be damp, thereby protecting the internal equipment of the dynamic reactive compensation cabinet.

[0038] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fast-response dynamic reactive power compensation device, comprising a compensation cabinet (1), characterized in that: The front side of the compensation cabinet (1) is hingedly connected with a cabinet door (2); a plurality of SVG static VAR generators (3) with self-contained cooling fans are fixedly installed inside the compensation cabinet (1); a condensation assembly (4) is arranged at the bottom of the compensation cabinet (1); a fan (5) fixedly installed on the compensation cabinet (1) is arranged on the top of the condensation assembly (4); The condensing assembly (4) comprises a shell (6), a semiconductor refrigeration sheet (7) is fixedly installed inside the shell (6), a rear sealing plate (8) is fixedly installed at the rear of the shell (6), a cooling fin (9) is fixedly connected to the rear sealing plate (8), and the cooling fin (9) is in contact with the cold end of the semiconductor refrigeration sheet (7), a partition (10) is provided inside the shell (6), a heat dissipation fin (11) is fixedly connected to the partition (10), and the heat dissipation fin (11) is in contact with the hot end of the semiconductor refrigeration sheet (7), and a fan 2 (12) fixedly installed on the shell (6) is provided on the front side of the heat dissipation fin (11); A single-chip microcomputer controller (13) is fixedly installed at the bottom of the compensation cabinet (1), the semiconductor cooling plate (7) and the second fan (12) are electrically connected to the single-chip microcomputer controller (13), and a temperature and humidity sensor (15) is fixedly installed at the top of the compensation cabinet (1), and the temperature and humidity sensor (15) is electrically connected to the single-chip microcomputer controller (13).

2. A fast-response dynamic reactive power compensation device as claimed in claim 1, characterized in that: The four ends of the bottom of the compensation cabinet (1) are provided with raised feet (16).

3. A fast-response dynamic reactive power compensation device as claimed in claim 1, characterized in that: An air inlet hole (17) is provided at the lower portion of the rear side wall of the compensation cabinet (1).

4. A fast-response dynamic reactive power compensation device as claimed in claim 1, characterized in that: The cabinet door (2) is provided with a plurality of air outlet holes (18) corresponding to the SVG static reactive generator (3).

5. A fast-response dynamic reactive power compensation device as claimed in claim 1, characterized in that: The bottom of the compensation cabinet (1) is provided with a second air inlet hole (19), and the lower portion of the front side wall of the compensation cabinet (1) is provided with a second air outlet hole (20), and both the second air inlet hole (19) and the second air outlet hole (20) are connected to the shell (6).

6. A fast-response dynamic reactive power compensation device as claimed in claim 1, characterized in that: The lower part of the condensation assembly (4) is provided with a water collecting pan (21) fixedly mounted on the compensation cabinet (1), and a drain pipe (22) is fixedly connected to the lowest point of the bottom of the water collecting pan (21), and the drain pipe (22) is connected to the condensate collection main pipe of the factory.

7. A fast-response dynamic reactive power compensation device as claimed in claim 1, characterized in that: The upper part of the fan 1 (5) is provided with a protective net (23) fixedly mounted on the compensation cabinet (1).

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