A box-type transformer substation

Abstract

The utility model discloses an American box transformer substation belongs to transformer technical field, including box, the high pressure room, transformer room and low pressure room are established in the box, is equipped with vacuum circuit breaker, high pressure sensor and disconnecting switch in the high pressure room, and vacuum circuit breaker built -in vacuum interrupter, electric operating mechanism and electric switching coil. The utility model discloses through carrying out structural optimization to traditional American box transformer, utilizes the high pressure room space of existing American box transformer, directly installs disconnecting switch, vacuum circuit breaker, grounding switch and other elements in the high pressure room, need not extra increase box space to realize microcomputer protection, three remotes, dispatching and other functions on the basis of the compact structure volume of existing American box transformer and so on advantage, satisfies the requirement of intelligent protection, recycling and modern power grid intelligent protection, intelligent dispatching.

Description

TECHNICAL FIELD

[0001] The utility model belongs to transformer technical field, specifically is a kind of American box transformer substation. BACKGROUND

[0002] American box transformer, full name American box transformer substation, is a commonly used power supply equipment.American box transformer combines transformer body, high-voltage load switch, fuse and other components together in transformer oil tank, due to immersion in oil, component volume is greatly reduced, structure is more compact, installation is convenient, flexible.Full insulation, full sealing structure, safe and reliable, easy to operate, maintenance-free.Widely used in residential areas, high industry center, factory and mine enterprise, airport, station, school and other places.Traditional American box transformer is oil-immersed load switch and fuse protection, with the following structural defects:

[0003] 1.Oil-immersed load switch is immersed in transformer oil for load cut-off operation, and the electric arc generated when cutting off current during operation will carbonize transformer oil, affect the insulation performance of transformer oil, and cannot be operated frequently.

[0004] 2.Load switch cannot realize breaking protection, and only relies on fuse to realize protection, and fuse is also immersed in transformer oil, and when fusing, transformer oil will also be carbonized, and it is not convenient to replace, and cannot be reused.

[0005] 3.Cannot realize intelligent scheduling networking protection functions such as remote control, remote measurement, remote signaling and microcomputer protection.

[0006] 4.Cannot realize obvious electric circuit safety break and high-voltage grounding. UTILITY MODEL CONTENTS

[0007] The utility model solves the technical problems of overcoming the deficiencies of prior art, and provides an American box transformer substation, vacuum circuit breaker, high-voltage sensor and disconnecting switch are arranged in the high-voltage chamber of traditional American box transformer, to realize the breaking of fault current, and the vacuum circuit breaker is provided with built-in vacuum arc-extinguishing chamber, which can be reused.

[0008] In order to solve the above technical problems, the utility model provides a kind of american box substation, including box, the high pressure chamber, transformer chamber and low pressure chamber are equipped in the box, low pressure chamber is located in high pressure chamber right side, transformer chamber is located in high pressure chamber rear side, transformer chamber is equipped with transformer, transformer high pressure bushing is equipped on the lateral wall between high pressure chamber and transformer chamber, high pressure chamber is equipped with vacuum circuit breaker, high pressure sensor and disconnecting switch, the disconnecting switch is fixed on high pressure chamber rear side wall, vacuum circuit breaker is fixed on front side wall, and high pressure sensor is located below electric vacuum circuit breaker;The incoming line end of high pressure sensor is connected with incoming line cable, outgoing line end is connected with the moving end of disconnecting switch, and vacuum circuit breaker is connected with transformer high pressure bushing;The vacuum circuit breaker is built in vacuum arc-extinguishing chamber, electric operating mechanism and electric opening and closing coil, can realize the breaking of fault current, vacuum arc-extinguishing chamber can also be reused, and the electric operating mechanism and electric opening and closing coil of circuit breaker can also cooperate with microcomputer protection device and measurement and control device, realize the functions such as distribution network scheduling three remote (remote control, remote measurement, remote signaling);High pressure disconnecting switch can realize obvious breaking point, increase safety.

[0009] Preferably, the high pressure chamber is also provided with a voltage transformer and a current transformer, the voltage transformer is arranged at the bottom of the high pressure chamber, the current transformer is fixed on the rear side wall of the high pressure chamber, the current transformer is electrically connected between the vacuum circuit breaker and the high pressure bushing, the voltage transformer provides the required power supply for the secondary device, and the current transformer provides measurement and metering data, and can reliably start the microcomputer protection to make the vacuum circuit breaker trip when a fault occurs.

[0010] Preferably, the high pressure chamber is also provided with a microcomputer protection measurement and control device, the microcomputer protection measurement and control device is fixed on the front side wall of the high pressure chamber, and the vacuum circuit breaker is electrically connected with the microcomputer protection measurement and control device. The microcomputer protection measurement and control device cooperates with the electric operating mechanism and the electric opening and closing coil of the vacuum circuit breaker, can realize the collection of switch quantities and electric signals such as online voltage and current, switch working state, is connected with the dispatching center or control background through communication modes such as 4G or power carrier, optical fiber, realizes real-time monitoring and operation.

[0011] Preferably, the high pressure chamber is also provided with a voltage transformer, and the voltage transformer is fixed on the bottom of the high pressure chamber.

[0012] Preferably, the high pressure chamber is also provided with a grounding switch, and the grounding switch is fixed on the top of the high pressure chamber, so that the high voltage loop is reliably grounded, and safety is increased.

[0013] Specifically, the top of the box is provided with a top cover, and the bottom of the box is provided with a base.

[0014] Specifically, the low pressure chamber is provided with a low voltage circuit breaker, a voltmeter, an ammeter and an operating switch.

[0015] Preferably, the box side is further provided with several groups of heat dissipation windows.

[0016] In summary, due to the adoption of the technical scheme, the utility model has the beneficial effects that:

[0017] The traditional American box transformer is structurally optimized, the existing high-voltage chamber space of the American box transformer is directly used to install the disconnecting switch, the vacuum circuit breaker, the grounding switch and other elements in the high-voltage chamber, without the need of additionally increasing the box space, so that on the basis of the existing American box transformer structure, the compact size and other advantages are realized, the microcomputer protection, the three remote controls, the dispatching and other functions are realized, and the requirements of intelligent protection, reuse and modern power grid intelligent protection and intelligent dispatching are met. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the front view of the American box transformer substation of the utility model;

[0019] Figure 2 is the left view of the American box transformer substation of the utility model.

[0020] LEGEND:

[0021] 100-box; 101-top cover; 102-base; 103-heat dissipation window; 200-high-voltage chamber; 201-voltage transformer; 202-high-voltage incoming cable; 203-disconnecting switch; 204-high-voltage sensor; 205-vacuum circuit breaker; 206-microcomputer protection and control device; 207-grounding switch; 208-current transformer; 300-low-voltage chamber; 301-low-voltage circuit breaker; 302-ammeter; 303-voltmeter; 304-control switch; 305-box door; 400-transformer chamber; 401-transformer; 402-high-voltage bushing. DETAILED DESCRIPTION

[0022] This part will describe the specific embodiments of the utility model in detail, the preferred embodiments of the utility model are shown in the drawings, the role of the drawings is to supplement the description of the text part with graphics, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the utility model, but it cannot be understood as the limitation of the protection scope of the utility model.

[0023] In the description of the utility model, it is understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right and the like, is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the invention and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the invention.

[0024] An American box transformer substation, such as Figure 1 andFigure 2 As shown, including the box 100, the box 100 top provided with a roof 101, the roof 10 in the middle of the height is higher than the height of the front and rear sides, roof type structure. Box 100 bottom provided with a base 102, the box 100 side is also provided with a number of groups of heat dissipation window 103. Box 100 inside high pressure chamber 200, low pressure chamber 300 and transformer chamber 400, transformer chamber 400 is located in the high pressure chamber 200 rear side, low pressure chamber 300 is located in the high pressure chamber 200 right side, high pressure chamber 200 and low pressure chamber 300 and high pressure chamber 200 and transformer chamber 400 between the insulation partition isolation. Low voltage circuit breaker 301, ammeter 302, voltmeter 303 and operating switch 304 are provided in the low pressure chamber 300, and the box door 305 is hinged on the side wall of the low pressure chamber 300, and the handle is provided on the box door 305. The transformer 401 is provided in the transformer chamber 400, and the high voltage sleeve 402 of the transformer 401 is provided on the side wall between the high pressure chamber 200 and the transformer chamber 400. The vacuum circuit breaker 205, the high voltage sensor 204 and the disconnecting switch 203 are provided in the high pressure chamber 200. The disconnecting switch 203 is fixed on the mounting frame 2 welded on the rear side wall of the high pressure chamber 200, the vacuum circuit breaker 205 is fixed on the support beam welded in the high pressure chamber 200, the high voltage sensor 204 is fixed below the support beam and below the vacuum circuit breaker 205; the incoming line end of the high voltage sensor 204 is connected with the high voltage incoming cable 202, the outgoing line end of the high voltage sensor 204 is connected with the moving end of the disconnecting switch 203, and the vacuum circuit breaker 205 is connected with the high voltage sleeve 402; the vacuum circuit breaker 205 is provided with a vacuum arc chamber, an electric operating mechanism and an electric opening and closing coil, which can realize the breaking of fault current, and the vacuum arc chamber can be reused. The electric operating mechanism and the electric opening and closing coil of the vacuum circuit breaker 205 can also cooperate with the microcomputer protection measurement and control device to realize the functions of three remote control of distribution network scheduling and the like; the disconnecting switch 203 can realize obvious breaking and increase safety.

[0025] As a preferred embodiment of the present embodiment, the high voltage chamber 200 is further provided with a voltage transformer 201 and a current transformer 208. The voltage transformer 201 is provided at the bottom of the high voltage chamber 200 to provide power supply for secondary devices. The current transformer 208 is fixed on the rear side wall of the high voltage chamber 200 and is electrically connected between the vacuum circuit breaker 205 and the high voltage sleeve 402 to provide measurement and metering data and reliably start the microcomputer protection to make the vacuum circuit breaker 205 trip when a fault occurs.

[0026] As a preferred embodiment of the embodiment, the high-voltage chamber 200 is further provided with a microcomputer protection and control device 206, the microcomputer protection and control device 206 is fixed on the front side wall of the high-voltage chamber 200, and the vacuum circuit breaker 205 is electrically connected with the microcomputer protection and control device 206. The microcomputer protection and control device 206 cooperates with the electric operating mechanism and the electric opening and closing coil of the vacuum circuit breaker 205, can realize the collection of switch quantities and electric signals such as online voltage and current and switch working state, is connected with a dispatch center or a control background through a 4G or power grid carrier wave, optical fiber and other communication modes, and realizes real-time monitoring and operation.

[0027] As a preferred embodiment of the embodiment, the high-voltage chamber 200 is further provided with a grounding switch 207, the grounding switch 207 is fixed on the top of the high-voltage chamber, and the high-voltage loop is reliably grounded, and safety is increased.

[0028] The American box transformer substation of the utility model realizes the functions of microcomputer protection, three remote controls (remote control, remote measurement, remote communication), dispatching and the like on the basis of the advantages such as the compact structure volume of the existing American box transformer, and meets the requirements of intelligent protection, recycling and modern power grid intelligent protection and intelligent dispatching.

[0029] The above embodiment is only used to illustrate the technical scheme of the utility model, and is not limited thereto; the person skilled in the art should understand that the technical scheme recorded in the foregoing embodiment can still be modified, or some technical features can be replaced equivalently; and these modifications or replacements will not make the essence of the corresponding technical scheme deviate from the protection scope of the utility model.

Claims

1. An American-style prefabricated substation, comprising a prefabricated enclosure, wherein the enclosure contains a high-voltage compartment, a transformer compartment, and a low-voltage compartment, the low-voltage compartment being located to the right of the high-voltage compartment, the transformer compartment being located behind the high-voltage compartment, a transformer being housed within the transformer compartment, and high-voltage bushings of the transformer being installed on the side wall between the high-voltage compartment and the transformer compartment, characterized in that: The high-voltage chamber is internally provided with a vacuum circuit breaker, a high-voltage sensor and a disconnecting switch, the disconnecting switch is fixed on the rear sidewall of the high-voltage chamber, the vacuum circuit breaker is fixed on the front sidewall, and the high-voltage sensor is located below the electric vacuum circuit breaker; the incoming line end of the high-voltage sensor is connected with an incoming line cable, the outgoing line end is connected with the movable end of the disconnecting switch, the vacuum circuit breaker is connected with a high-voltage bushing of a transformer, and the vacuum circuit breaker is internally provided with a vacuum arc-extinguishing chamber, an electric operating mechanism and an electric opening and closing coil.

2. The American box transformer substation of claim 1, wherein: The high-voltage chamber is further internally provided with a voltage transformer and a current transformer, the voltage transformer is arranged at the bottom of the high-voltage chamber, the current transformer is fixed on the rear sidewall of the high-voltage chamber, and the current transformer is electrically connected between the vacuum circuit breaker and the high-voltage bushing.

3. The American box transformer substation according to claim 2, characterized in that: The high-voltage chamber is further internally provided with a microcomputer protection measurement and control device, the microcomputer protection measurement and control device is fixed on the front sidewall of the high-voltage chamber, and the vacuum circuit breaker is electrically connected with the microcomputer protection measurement and control device.

4. The American box transformer substation of any one of claims 1 to 3, characterized in that: The high-voltage chamber is further internally provided with a grounding switch, and the grounding switch is fixed on the top of the high-voltage chamber.

5. The American box transformer substation of claim 1, wherein: The top of the box body is provided with a top cover, the top cover is in a ridge type structure, and the bottom of the box body is provided with a base.

6. The American box transformer substation of claim 1 or 5, wherein: The low-voltage chamber is internally provided with a low-voltage circuit breaker, a voltmeter, an ammeter and an operating switch.

7. The American box transformer substation of claim 1, wherein: The side of the box body is further provided with a plurality of groups of heat dissipation windows.

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