Embedded railway through line comprehensive compensation device

Abstract

The utility model discloses an embedded railway through line comprehensive compensation device, which belongs to the technical field of electric energy quality management, and comprises a casing, a power assembly and a fan assembly, the casing comprises a casing body, a bottom plate, a U-shaped insulating plate and a plurality of fixing plates, and the casing body, the bottom plate and a fan mounting plate are spliced into a hollow cuboid; a power assembly is arranged in the machine shell. The power assembly comprises a first insulating plate, a filtering circuit board, a supporting column, a second insulating plate and an inverter circuit board. The power assembly is located on the bottom plate; one end of the filter circuit board is provided with an electric connection terminal and a communication connection terminal; a fan assembly is arranged on one side of the power assembly; the fan assembly comprises a fan mounting plate, a fan and a fan cover; the utility model solves the technical problem that in the prior art, for solving the problem of electric energy quality of railway through lines, a device which can be directly embedded into electric equipment and can realize on-site electric energy quality treatment of specific load points or systems is lacked.

Description

Technical Field

[0001] The utility model belongs to the technical field of power quality management, and in particular relates to an embedded railway through-line comprehensive compensation device. Background Art

[0002] The Tieli Guantong Line is a power system line used for railway signaling, communications and other comprehensive railway power consumption; it is generally within 100 meters from the railway. It is connected to the public power grid or power plants, substations and transmission and distribution lines outside the public power grid. It is a 10KV or 35KV power line along the railway that connects two adjacent substations and distribution stations and mainly supplies power to the railway power loads along the line.

[0003] Railway power supply systems are primarily high-power traction loads. Frequent startup and sudden changes in loads can lead to severe harmonic pollution and reactive power issues. Existing power quality management devices often employ centralized compensation, achieved by centrally deploying large-capacity active power filters (APFs) and static VAR generators (SVGs) in substations or distribution rooms. This approach suffers from untimely and inaccurate compensation, ineffectiveness in addressing power quality issues at the end of through-line lines, and high power capacity and investment costs. This approach fails to meet the dynamic and rapid response requirements of railway power supply systems and is not conducive to distributed installation.

[0004] Therefore, there is a need for an embedded comprehensive compensation device suitable for railway power supply systems. Through highly integrated and modular design, it can achieve miniaturization, high reliability and high performance to address the shortcomings of existing centralized compensation methods and conventional active power filters and meet the special requirements of railway power supply systems. Utility Model Content

[0005] The purpose of the present utility model is to provide an embedded railway through-line comprehensive compensation device to solve the technical problem in the prior art proposed in the above-mentioned background technology, that is, there is a lack of a device that can be directly embedded in the electrical equipment to achieve on-site power quality management of specific load points or systems for the purpose of managing power quality issues.

[0006] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0007] An embedded railway through-line comprehensive compensation device includes a housing, a power component, and a fan component, wherein:

[0008] The housing includes a shell, a bottom plate, a U-shaped insulating plate and a plurality of fixing plates. The shell, the bottom plate and the fan mounting plate are spliced ​​into a hollow cuboid. A power component is arranged in the housing.

[0009] The power assembly includes a first insulating plate, a filter circuit board, a support column, a second insulating plate, and an inverter circuit board, which are installed in sequence from bottom to top; the power assembly is located on the bottom plate; one end of the filter circuit board is provided with an electrical connection terminal and a communication connection terminal; a fan assembly is provided on one side of the power assembly;

[0010] The fan assembly includes a fan mounting plate, a fan mounted on the inner side of the fan mounting plate, and a fan cover mounted on the outer side of the fan mounting plate.

[0011] Preferably, the bottom plate is provided with threaded holes or riveted with nuts for connection with other components.

[0012] Preferably, the U-shaped insulating plate covers the top of the power component, forming an insulating barrier between the shell and the internal charged body, effectively increasing the creepage distance to prevent leakage.

[0013] Preferably, the shell is provided with honeycomb-shaped ventilation holes, which can enhance the air circulation inside the device, promote the discharge of heat to the outside, and improve the heat dissipation performance and reliability of the device.

[0014] Preferably, the fixing plate includes a No. 1 fixing plate and a No. 2 fixing plate, and the fixing plates are installed below the base plate by bolts, and the fixing plates are used to fix and support the entire integrated compensation device.

[0015] Preferably, the reserved through hole on the No. 1 insulating plate is mounted on the rivet nut or covered on the threaded hole, and the filter circuit board is fixed to the base plate through the No. 1 insulating plate via screws; this can improve the installation accuracy and reliability of the filter circuit board, increase the creepage distance through the insulating plate, and improve the insulation performance.

[0016] Preferably, threaded holes are provided at both ends of the support column; this can improve the connection reliability between the support column and the circuit board and facilitate assembly.

[0017] Preferably, one end of the support column is screwed and fixed to the reserved through hole of the filter circuit board; the support column passes through the through hole of the second insulating plate, and the other end of the support column is screwed and fixed to the inverter circuit board.

[0018] Preferably, the support column is made of brass material, which plays an electrical connection role and can simplify wiring; brass has excellent conductivity, machinability and corrosion resistance, which can ensure the mechanical strength and electrical performance of the support column and extend its service life.

[0019] Preferably, the electrical connection terminals and the communication connection terminals on the filter circuit board are partially arranged outside the housing to facilitate connection with external cables.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] The utility model provides an embedded railway through-line comprehensive compensation device, which solves the technical problem in the prior art of lacking a device that can be directly embedded in the interior of electrical equipment to achieve on-site power quality management of specific load points or systems for managing the power quality problem of railway through-lines; by setting power components, the functions of reactive power compensation and harmonic suppression of railway through-lines are realized; a fan component and honeycomb ventilation holes are also provided, and a forced air cooling heat dissipation duct is formed under the action of the fan, which strengthens the air circulation inside the device, promotes the discharge of heat to the outside, and improves the heat dissipation performance and reliability of the device; a number of insulating plates are also provided, including a No. 1 insulating plate, a No. 2 insulating plate and a U-shaped insulating plate. The adoption of multiple insulation protection measures greatly improves the safety and reliability of the device operation and reduces the risk of leakage; the fixing plate and the bottom plate are fixedly connected by bolts, and the shape and size of the fixing plate can be changed to conveniently adapt to the installation requirements of different electrical equipment; and the terminals are arranged on the outside of the shell to facilitate the access of external cables. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a front view of an embodiment of the utility model;

[0023] Figure 2 It is a left side view of an embodiment of the utility model;

[0024] Figure 3 It is a top view of an embodiment of the utility model;

[0025] Figure 4 It is a rear view of an embodiment of the utility model;

[0026] Figure 5 This is a top view of an embodiment of the utility model with the housing removed;

[0027] Figure 6 This is a left side view of the embodiment of the utility model after the housing is removed;

[0028] Figure 7 This is a top view of an embodiment of the utility model with the housing and inverter circuit board removed;

[0029] Figure 8 Schematic diagram of the housing of an embodiment of the present utility model;

[0030] Figure 9 This is a schematic diagram of the bottom plate of an embodiment of the utility model;

[0031] Figure 10 This is a schematic diagram of a fan mounting plate according to an embodiment of the present utility model;

[0032] Figure 11 This is a schematic diagram of a fixing plate No. 1 according to an embodiment of the present utility model;

[0033] Figure 12 This is a schematic diagram of the second fixing plate of an embodiment of the present utility model;

[0034] Figure 13 This is a schematic diagram of a support column according to an embodiment of the present utility model;

[0035] Figure 14 This is a schematic diagram of an insulating plate No. 1 according to an embodiment of the present utility model;

[0036] Figure 15 This is a schematic diagram of the second insulating plate of an embodiment of the present utility model;

[0037] Figure 16 It is a schematic diagram of a U-shaped insulating plate according to an embodiment of the present invention.

[0038] In the figure: 1. Filter circuit board; 2. Inverter circuit board; 3. Housing; 4. Base plate; 5. Fan mounting plate; 6. Support column; 7. Fixing plate No. 1; 8. Fixing plate No. 2; 9. Fan cover; 10. Fan; 11. Insulation plate No. 1; 12. U-shaped insulation plate; 13. Insulation plate No. 2; 14. Fan assembly; 15. Power assembly. DETAILED DESCRIPTION

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0040] like Figures 1-16 As shown:

[0041] An embedded railway through-line comprehensive compensation device includes a housing, a power component 15 and a fan component 14, wherein:

[0042] The casing includes a shell 3, a base plate 4, a U-shaped insulating plate 12 and several fixed plates, and the shell 3, base plate 4 and fan mounting plate 5 are spliced ​​into a hollow rectangular parallelepiped; a power component 15 is arranged in the casing; the U-shaped insulating plate 12 covers the top of the power component 15, forming an insulating barrier between the shell 3 and the internal charged body, effectively increasing the creepage distance to prevent leakage; the fixed plate includes a No. 1 fixing plate 7 and a No. 2 fixing plate 8, and the fixing plate is installed under the base plate 4 by bolts, and the fixing plate is used to fix and support the entire comprehensive compensation device; the reserved through hole on the No. 1 insulating plate 11 is mounted on the rivet nut or covers the threaded hole, and the filter circuit board 1 is fixed to the base plate 4 by screws spaced apart by the No. 1 insulating plate 11; the installation accuracy and reliability of the filter circuit board 1 can be improved, and the creepage distance is increased by the insulating plate to improve the insulation performance.

[0043] The power component 15 includes an insulating plate No. 1 11, a filter circuit board 1, a support column 6, an insulating plate No. 2 13, and an inverter circuit board 2 installed in sequence from bottom to top; the power component 15 is located on the base plate 4; an electrical connection terminal and a communication connection terminal are provided at one end of the filter circuit board 1; a fan component 14 is provided on one side of the power component 15; the electrical connection terminal and the communication connection terminal on the filter circuit board 1 are partially provided outside the shell 3, which is convenient for connection with external cables; threaded holes are provided at both ends of the support column 6; the connection reliability between the support column 6 and the circuit board can be improved, and assembly is convenient; one end of the support column 6 is screwed and fixed to the reserved through hole of the filter circuit board 1; the support column 6 passes through the through hole of the No. 2 insulating plate 13, and the other end of the support column 6 is screwed and fixed to the inverter circuit board 2; the support column 6 is made of brass material, which plays an electrical connection role and can simplify wiring; brass has excellent conductivity, machinability and corrosion resistance, which can ensure the mechanical strength and electrical properties of the support column 6 and extend its service life.

[0044] The fan assembly 14 includes a fan mounting plate 5, a fan 10 mounted on the inside of the fan mounting plate 5, and a fan cover 9 mounted on the outside of the fan mounting plate 5. The base plate 4 has threaded holes or riveted nuts for connection to other components. The housing 3 is provided with honeycomb-shaped ventilation holes, which enhance air circulation within the device, promote heat dissipation, and improve the device's heat dissipation performance and reliability.

[0045] The utility model provides a casing, which includes a shell 3, a bottom plate 4, a U-shaped insulating plate 12 and several fixing plates; the U-shaped insulating plate 12 covers the top of the power component 15, and the fixing plate includes a No. 1 fixing plate 7 and a No. 2 fixing plate 8, which are mounted below the bottom plate 4 by bolts, and the reserved through-hole on the No. 1 insulating plate 11 is sleeved on the rivet nut or covered on the threaded hole, and the filter circuit board 1 is fixed to the bottom plate 4 by screws spaced apart from the No. 1 insulating plate 11; a power component 15 is provided in the casing, and the power component 15 includes the No. 1 insulating plate 11, the filter circuit board 1, the support column 6, the No. 2 insulating plate 13, which are installed in sequence from bottom to top Inverter circuit board 2; one end of the filter circuit board 1 is provided with an electrical connection terminal and a communication connection terminal, and the electrical connection terminal and the communication connection terminal on the filter circuit board 1 are partially arranged outside the shell 3, and one end of the support column 6 is screwed and fixed to the reserved through hole of the filter circuit board 1, and the support column 6 passes through the through hole of the second insulating plate 13, and the other end of the support column 6 is screwed and fixed to the inverter circuit board 2; a fan assembly 14 is provided on one side of the power component 15, and the fan assembly 14 includes a fan mounting plate 5, a fan 10 installed on the inner side of the fan mounting plate 5 and a fan cover 9 installed on the outer side of the fan mounting plate 5, and the shell 3 is provided with honeycomb ventilation holes.

[0046] Working principle:

[0047] This device is installed through a fixed plate in the power facilities of the railway through-line that needs to deal with power quality issues. The power line on the grid side is connected to the electrical connection terminal of the device, and the AC power to be processed is connected to the input end of the filter circuit; the external control unit is connected to the communication connection terminal of the device for data exchange and command sending.

[0048] When the device is working, the power current enters the device from the electrical connection terminal and supplies power to the device, and the filter circuit suppresses high-frequency interference and harmonics on the processed current; the filtered current flows from the brass support column 6 to the inverter circuit board 2, and the inverter circuit board 2 absorbs or emits reactive current to offset the reactive and harmonic current on the load side, thereby playing a compensation role; during operation, the fan 10 continues to operate, drawing cold air in from the outside of the device to form an air flow, and an air duct is formed inside the casing. One end of the air duct is connected to the fan assembly 14 as an air inlet, and the ventilation hole is an air outlet. The heating surface of the internal electronic components is directly exposed in the air duct. Driven by the fan 10, the cold air enters the air duct from the air inlet at a higher flow rate, quickly takes away the heat from the surface of the electronic components, and then is discharged from the air outlet. The whole process forms a heat conduction channel.

[0049] The current after inverter processing returns to the grid side and is superimposed on the original distorted current, so that the current on the grid side tends to an ideal sine waveform and / or changes the phase angle between voltage and current, thereby improving the power factor and reducing the harmonic content.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An embedded railway through-line comprehensive compensation device, characterized in that: It comprises a housing, a power component (15) and a fan component (14), wherein: The casing comprises a shell (3), a bottom plate (4), a U-shaped insulating plate (12) and a plurality of fixing plates, wherein the shell (3), the bottom plate (4) and the fan mounting plate (5) are spliced ​​into a hollow rectangular parallelepiped; a power component (15) is arranged in the casing; The power assembly (15) comprises a first insulating plate (11), a filter circuit board (1), a support column (6), a second insulating plate (13), and an inverter circuit board (2) which are sequentially installed from bottom to top; the power assembly (15) is located on a bottom plate (4); an electrical connection terminal and a communication connection terminal are arranged at one end of the filter circuit board (1); and a fan assembly (14) is arranged at one side of the power assembly (15); The fan assembly (14) comprises a fan mounting plate (5), a fan (10) mounted on the inner side of the fan mounting plate (5), and a fan cover (9) mounted on the outer side of the fan mounting plate (5).

2. According to claim 1, the embedded railway through-line comprehensive compensation device is characterized in that: The bottom plate (4) is provided with threaded holes and / or riveted with nuts.

3. The embedded railway through-line comprehensive compensation device according to claim 1 is characterized in that: The U-shaped insulating plate (12) covers the top of the power component (15).

4. The embedded railway through-line comprehensive compensation device according to claim 1 is characterized in that: The shell (3) is provided with honeycomb-shaped ventilation holes.

5. The embedded railway through-line comprehensive compensation device according to claim 1 is characterized in that: The fixing plates include a first fixing plate (7) and a second fixing plate (8), and the fixing plates are installed below the bottom plate (4).

6. The embedded railway through-line comprehensive compensation device according to claim 1 or 2, characterized in that: The reserved through hole on the first insulating plate (11) is sleeved on the riveted nut or covers the threaded hole, and the filter circuit board (1) is fixed to the base plate (4) via the first insulating plate (11) through screws.

7. The embedded railway through-line comprehensive compensation device according to claim 1 is characterized in that: Threaded holes are arranged at both ends of the support column (6).

8. The embedded railway through-line comprehensive compensation device according to claim 7 is characterized in that: One end of the support column (6) is screwed and fixed on a reserved through hole of the filter circuit board (1); the support column (6) passes through the through hole of the second insulating plate (13), and the other end of the support column (6) is screwed and fixed on the inverter circuit board (2).

9. The embedded railway through-line comprehensive compensation device according to claim 1 is characterized in that: The support column (6) is made of brass material.

10. The embedded railway through-line comprehensive compensation device according to claim 1 is characterized in that: Parts of the electrical connection terminals and the communication connection terminals on the filter circuit board (1) are located outside the casing.

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