Low-voltage reactive compensation control cabinet

Abstract

A low-voltage reactive power compensation control cabinet comprises a cuboid cabinet body frame, a top frame body at the top of the cabinet body frame and a bottom end side are provided with vertical stiffening beams, and two sides of the vertical stiffening beams are sequentially provided with a circuit breaker, a contactor, a reactor and a capacitor from top to bottom. Through the reasonable layout design of the cabinet body frame structure and the elements, the heating elements can be uniformly distributed, the temperature gradient in the control cabinet is reduced, and the heat dissipation efficiency is improved, so that the reactive compensation control cabinet can stably operate in various environments, the space utilization rate of the cabinet body is improved, and the manufacturing efficiency of the cabinet body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage power distribution cabinets, in particular to a low-voltage reactive power compensation control cabinet. Background Art

[0002] In the power system, reactive power compensation technology is a key means to improve the power factor of the power grid, reduce line losses, and improve power supply efficiency. As the core equipment for realizing this technology, the design and layout of the reactive power compensation control cabinet directly affect the effect of reactive power compensation and the stable operation of the equipment.

[0003] Traditional low-voltage reactive power compensation control cabinets generally have a design defect, that is, heat-generating components such as reactance and capacitors are placed in the lower layer of the control cabinet. Although this layout simplifies the structural design of the control cabinet to a certain extent, it also brings significant heat dissipation problems.

[0004] First, as the main heating elements, reactance and capacitance will generate a lot of heat during long-term operation. When these heating elements are placed together on the lower layer, due to the limited space inside the control cabinet, the heat is difficult to dissipate effectively, resulting in a continuous increase in the temperature inside the control cabinet. This will not only affect the performance and life of the electrical components inside the control cabinet, but also increase the risk of equipment failure.

[0005] Secondly, due to the limited space inside the control cabinet, when the heating components are placed together, the temperature distribution inside the control cabinet will be uneven. The temperature in some areas is too high, while the temperature in other areas is relatively low. This temperature gradient will aggravate the aging and damage of electrical components, further affecting the effect of reactive power compensation.

[0006] In addition, as the requirements of power systems for reactive power compensation technology continue to increase, the defects of traditional low-voltage reactive power compensation control cabinets in heat dissipation design are becoming increasingly prominent. Especially in harsh environments such as high temperature and high humidity, the heat dissipation problem of the control cabinet is more prominent, seriously affecting the reliability and stability of the equipment. Summary of the invention

[0007] The technical problem to be solved by the utility model is to provide a low-voltage reactive power compensation control cabinet, solve the defects of the traditional low-voltage reactive power compensation control cabinet in heat dissipation design, and improve the reliability and stability of the equipment.

[0008] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0009] A low-voltage reactive power compensation control cabinet comprises a cabinet frame in the shape of a rectangular parallelepiped, a top frame at the top of the cabinet frame and a bottom side are provided with vertical reinforcing beams, and circuit breakers, contactors, reactors and capacitors are arranged in sequence from top to bottom on both sides of the vertical reinforcing beams.

[0010] Reactor supporting side beams are arranged on both sides above the capacitor, the reactor supporting side beams are connected to the cabinet frame and the vertical reinforcing beams, and the reactor is installed on a platform supported by the reactor supporting side beams.

[0011] A first side beam and a second side beam are provided on both sides above the above-mentioned reactor from top to bottom in sequence, the first side beam and the second side beam are connected to the cabinet frame and the vertical reinforcement beam, a component mounting plate is provided between the first side beam and the second side beam near one end of the vertical reinforcement beam, and the circuit breaker and the contactor are mounted on the component mounting plate.

[0012] Above the above-mentioned circuit breaker, protective plates are provided on both sides of the vertical reinforcing beam, and the protective plates are located in front of the circuit breaker to block the exposed cables.

[0013] The cabinet frame is provided with a front door in front of which a reactive power compensation controller is provided. The reactive power compensation controller is used to control the power-on of the contactor. The front door is also provided with a power switch which is the main power control switch of the cabinet.

[0014] A fan with a filter is provided at the bottom of the front door.

[0015] A rear door is arranged behind the cabinet frame, an air inlet fan is arranged at the bottom end of the rear door directly facing the capacitor, and an air outlet fan is arranged at the top end of the rear door.

[0016] A heat dissipation barrier is arranged above the top frame, and a heat dissipation plate is arranged on the rear door directly facing the heat dissipation barrier.

[0017] The above-mentioned fan with filter, air inlet fan and air outlet fan are controlled by a reactive power compensation controller. A temperature sensor is provided at the bottom of the cabinet frame, and the temperature sensor is electrically connected to the reactive power compensation controller.

[0018] The utility model provides a low-voltage reactive power compensation control cabinet, which, through the cabinet frame structure and the reasonable layout design of components, enables the heating components to be evenly distributed, reduces the temperature gradient inside the control cabinet, and improves the heat dissipation efficiency, thereby ensuring that the reactive power compensation control cabinet can operate stably in various environments, and improves the cabinet space utilization rate and the cabinet manufacturing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0020] Figure 1 This is a schematic diagram of the structure of the reactive power compensation cabinet of the utility model;

[0021] Figure 2 This is a schematic diagram of the front door structure;

[0022] Figure 3 This is a schematic diagram of the backdoor structure;

[0023] Figure 4 This is the electrical schematic diagram of reactive power compensation.

[0024] In the figure: cabinet frame 1, top frame 2, vertical reinforcement beam 3, reactor supporting side beam 4, first side beam 5, second side beam 6, capacitor 7, reactor 8, contactor 9, circuit breaker 10, protection plate 11, temperature sensor 12, front door 13, reactive power compensation controller 14, power switch 15, fan with filter 16, air inlet fan 17, air outlet fan 18, heat sink 19, heat dissipation barrier 20, component mounting plate 21, rear door 22. DETAILED DESCRIPTION

[0025] like Figure 1-4 As shown in the figure, a low-voltage reactive compensation control cabinet is provided, which includes a cabinet frame 1 in the form of a rectangular parallelepiped. A top frame 2 at the top of the cabinet frame 1 and a vertical reinforcing beam 3 are provided on the side of the bottom end. A circuit breaker 10, a contactor 9, a reactor 8 and a capacitor 7 are arranged in sequence from top to bottom on both sides of the vertical reinforcing beam 3.

[0026] like Figure 1 As shown in the figure, the circuit breaker 10, contactor 9, reactor 8 and capacitor 7 arranged from top to bottom have the same current direction as the reactive compensation line, and the cables can be arranged from top to bottom in the cabinet; in addition, the reactor and capacitor are arranged separately up and down, so that the heating elements can better and more fully utilize the space in the vertical space, which can prevent heat from being concentrated in the lower part of the cabinet; a complete set of circuit breakers, contactors, reactors and capacitors are arranged on the vertical reinforcement beams 3, which can make full use of the front and rear space of the cabinet.

[0027] Reactor supporting side beams 4 are provided on both sides above the capacitor 7 , the reactor supporting side beams 4 are connected to the cabinet frame 1 and the vertical reinforcing beams 3 , and the reactor 8 is installed on a platform supported by the reactor supporting side beams 4 .

[0028] A first side beam 5 and a second side beam 6 are provided on both sides above the above-mentioned reactor 8 from top to bottom in sequence, the first side beam 5 and the second side beam 6 are connected to the cabinet frame 1 and the vertical reinforcement beam 3, and a component mounting plate 21 is provided between the first side beam 5 and the second side beam 6 near one end of the vertical reinforcement beam 3, and the circuit breaker 10 and the contactor 9 are installed on the component mounting plate 21.

[0029] Above the circuit breaker 10 , protective plates 11 are provided on both sides of the vertical reinforcing beam 3 . The protective plates 11 are located in front of the circuit breaker 10 to block exposed cables.

[0030] The cabinet frame 1 is provided with a front door 13 in front, and a reactive power compensation controller 14 is provided on the front door 13. The reactive power compensation controller 14 is used to control the contactor 9 to be powered on. The front door 13 is also provided with a power switch 15, which is the main power control switch of the cabinet.

[0031] A fan 16 with a filter is provided at the bottom of the front door 13 .

[0032] A rear door 22 is disposed at the rear of the cabinet frame 1 . An air inlet fan 17 is disposed at the bottom of the rear door 22 facing the capacitor 7 , and an air outlet fan 18 is disposed at the top of the rear door 22 .

[0033] Hot air always moves upward, through the filter fan 16 and the air inlet fan 17 at the bottom, and the air outlet fan 18 at the top, allowing the external cold air to pass through the bottom to cool the reactor and capacitor, and bring the heat at the bottom of the electric cabinet to the air outlet fan 18 for discharge, thus reducing the inherent characteristics of the hot air and cooling the cabinet.

[0034] A heat dissipation barrier 20 is provided above the top frame 2 , and a heat dissipation plate 19 is provided on the rear door 22 directly facing the heat dissipation barrier 20 .

[0035] The incoming and exhausted hot air can be buffered to the top through the heat dissipation insulation layer 20 and discharged from the heat dissipation plate 19 .

[0036] The above-mentioned fan with filter 16 , air inlet fan 17 and air outlet fan 18 are controlled by a reactive power compensation controller 14 . A temperature sensor 12 is provided at the bottom of the cabinet frame 1 . The temperature sensor 12 is electrically connected to the reactive power compensation controller 14 .

Claims

1. A low voltage reactive power compensation control cabinet, characterized in that: The reactive power compensation control cabinet comprises a cabinet frame (1) in the form of a rectangular parallelepiped, wherein a top frame (2) at the top of the cabinet frame (1) and a bottom side are provided with vertical reinforcement beams (3), and circuit breakers (10), contactors (9), reactors (8) and capacitors (7) are arranged in sequence from top to bottom on both sides of the vertical reinforcement beams (3).

2. A low voltage reactive power compensation control cabinet according to claim 1, characterized in that: Reactor supporting side beams (4) are provided on both sides above the capacitor (7); the reactor supporting side beams (4) are connected to the cabinet frame (1) and the vertical reinforcing beams (3); and the reactor (8) is installed on a platform supported by the reactor supporting side beams (4).

3. A low voltage reactive power compensation control cabinet according to claim 2, characterized in that: A first side beam (5) and a second side beam (6) are provided on both sides above the reactor (8) in order from top to bottom; the first side beam (5) and the second side beam (6) are connected to the cabinet frame (1) and the vertical reinforcing beam (3); a component mounting plate (21) is provided between the first side beam (5) and the second side beam (6) near one end of the vertical reinforcing beam (3); and the circuit breaker (10) and the contactor (9) are mounted on the component mounting plate (21).

4. A low voltage reactive power compensation control cabinet according to claim 3, characterized in that: Above the circuit breaker (10), protective plates (11) are provided on both sides of the vertical reinforcing beam (3); the protective plates (11) are located in front of the circuit breaker (10) and are used to block exposed cables.

5. A low voltage reactive power compensation control cabinet according to claim 4, characterized in that: The cabinet frame (1) is provided with a front door (13) in front, and a reactive power compensation controller (14) is provided on the front door (13). The reactive power compensation controller (14) is used to control the contactor (9) to be powered on. The front door (13) is also provided with a power switch (15), and the power switch (15) is a main power control switch of the cabinet.

6. A low voltage reactive power compensation control cabinet according to claim 5, characterized in that: A fan (16) with a filter is provided at the bottom of the front door (13).

7. A low voltage reactive power compensation control cabinet according to claim 6, characterized in that: A rear door (22) is provided at the rear of the cabinet frame (1); an air inlet fan (17) is provided at the bottom end of the rear door (22) directly facing the capacitor (7); and an air outlet fan (18) is provided at the top end of the rear door (22).

8. A low voltage reactive power compensation control cabinet according to claim 7, characterized in that: A heat dissipation barrier (20) is provided above the top frame (2), and a heat dissipation plate (19) is provided on the rear door (22) directly facing the heat dissipation barrier (20).

9. A low voltage reactive power compensation control cabinet according to claim 8, characterized in that: The fan with filter (16), the air inlet fan (17) and the air outlet fan (18) are controlled by a reactive power compensation controller (14); a temperature sensor (12) is provided at the bottom of the cabinet frame (1); and the temperature sensor (12) is electrically connected to the reactive power compensation controller (14).

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