CN110601034B

CN110601034B - Intelligent prepackage type transformer substation

Info

Publication number: CN110601034B
Application number: CN201910883276.1A
Authority: CN
Inventors: 宋学峰
Original assignee: Hubei Kington Electric Co ltd
Current assignee: Hubei Kington Electric Co ltd
Priority date: 2019-09-18
Filing date: 2019-09-18
Publication date: 2020-10-20
Anticipated expiration: 2039-09-18
Also published as: CN110601034A

Abstract

The invention relates to an intelligent prefabricated substation, which comprises a box body and a plurality of rows of box doors distributed on the front surface of the box body, wherein heat dissipation holes are symmetrically processed at the tops of two side walls of the box body and used for discharging heat above the box body, and an electrical appliance rack for placing and elements is arranged in the box body; the internal space of the box body is isolated by a plurality of clapboards arranged in the electric appliance frame and is divided into a high-voltage cabinet, a low-voltage cabinet and a fuse cabinet, and a plurality of box doors and the corresponding high-voltage cabinet. The intelligent prepackage type transformer substation, the movable contact passes through the wire with the arrester to be connected, the arrester prevents that voltage from damaging other equipment, the signal that provides according to voltage transformer has, judge the type and the looks of trouble, send fault signal, still furthest avoids ferromagnetic resonance, the fuse plays protection circuit's effect, when reasons such as breaking down or personnel's misconnection, high-voltage isolator realizes fast damming, both air-cooling and water-cooling are installed in the transformer substation simultaneously, reduce the advantage of its inside temperature.

Description

Intelligent prepackage type transformer substation

Technical Field

The invention relates to a transformer substation, in particular to an intelligent prefabricated transformer substation.

Background

With the expansion of urban construction scale and the consideration of environmental factors by the development of modern economy, the power supply development of modern cities is increasingly hindered by concentrated voltage reduction, long-distance power distribution and spider-web-like overhead power grids in the past. In urban and rural power grid construction and transformation, the country requires high voltage to directly enter a load center to form a power supply pattern of high-voltage power receiving-transformer voltage reduction-low-voltage power distribution, so that power supply distribution equipment develops towards the direction of land conservation, power saving, compactness, miniaturization and unattended operation, and a pre-installed transformer substation is the best product with the characteristics, so that the power supply distribution equipment is widely applied to urban and rural power grids.

Meanwhile, as informatization, networking and intelligent residential communities develop, the transformer substation is required to be safe and reliable, and simultaneously, the intelligent functions of 'four remote' (remote measurement, remote communication, remote regulation and remote control) are required. When the intelligent substation ring network supplies power, the functions of automatic positioning of a fault section, fault removal, load transfer, network reconstruction and the like can be completed under the coordination of preset computer software, so that power transmission can be recovered in about one minute. At present, the monitoring means of main power networks at home and abroad are very advanced, such as optical fiber communication, unattended transformer substations, automatic data acquisition and the like, but the monitoring control level of a power distribution network is still poor. The distribution network needs to enhance the information acquisition at the tail end and the control of the distribution equipment at the tail end, so that the distribution network can reach an observable and controllable state.

Although the prefabricated substation (also called box-type transformer) in the current market is various in types and is full of flowers, the prefabricated substation is not intelligentized and is not suitable for the construction of an intelligent power grid; the self energy consumption is high, and the environmental protection performance is poor; large volume, large occupied area and poor use flexibility; the function that terminal or looped netowrk of transformer substation were supplied power can be realized to prepackage type transformer substation without building the house, consequently now the wide application, european style prepackage type transformer substation all installs the transformer of transformer substation and high-voltage board and low-voltage distribution cabinet in the box, and not only area occupied is great relatively, can produce a large amount of heats in long-term operation moreover, and the box seals the thermal diffusivity poor, and the compulsory exhaust equipment of installation often damages, and the normal operating of transformer must be influenced to the high temperature in the box, shortens the life of transformer simultaneously.

Disclosure of Invention

In view of the above, it is necessary to provide an advantage that both air cooling and water cooling can be simultaneously installed in the substation to reduce the temperature inside thereof.

An intelligent prefabricated substation comprises a box body and a plurality of rows of box doors distributed on the front surface of the box body, wherein heat dissipation holes are symmetrically formed in the tops of two side walls of the box body and used for discharging heat above the box body, and an electric appliance frame for placing and elements is arranged in the box body;

the plurality of partition plates arranged in the electric appliance frame isolate the internal space of the box body and divide the internal space into a high-voltage cabinet, a low-voltage cabinet and a fuse cabinet, and the box bodies form a closed space after the box doors and the corresponding high-voltage cabinet, low-voltage cabinet and fuse cabinet are closed;

the side surface of the high-voltage cabinet is provided with a wall bushing extending to the outside of the box body, a plurality of mutually independent voltage transformers, high-voltage circuit breakers, lightning arresters and high-voltage isolating switches are isolated in the high-voltage cabinet respectively, one ends of the voltage transformers are electrically connected to the high-voltage circuit breakers through leads, the voltage transformers are electrically connected to one ends of the high-voltage isolating switches through the high-voltage circuit breakers, the lightning arresters are electrically connected to the other ends of the high-voltage isolating switches through the leads, first and second post insulators of the high-voltage isolating switches are arranged, a fixed contact is arranged at the top of the first post insulator, a rotary switch is arranged at the top of the second post insulator, and the front end of the switch is connected with a movable;

a transformer, a load meter and a low-voltage circuit breaker are arranged in the low-voltage cabinet, the transformer is arranged at the bottom of the low-voltage cabinet, a plurality of low-voltage circuit breakers which are arranged side by side are respectively arranged above the transformer, and the load meter is connected with one end of each low-voltage circuit breaker;

fuse cabinet includes wire outgoing sleeve, inlet wire sleeve and fuse, the bottom installation insulator foot of fuse, and the both ends of fuse set up respectively and meet with wire outgoing sleeve and inlet wire sleeve, and the wire of the intraductal connection of inlet wire sleeve meets with the arrester, and the wire of the intraductal connection of outlet wire sleeve is connected with the load measurement appearance.

Furthermore, the static contact is connected with the high-voltage circuit breaker through a wire, and the movable contact is connected with the lightning arrester through a wire.

Further, the bottom of high-voltage board, low-voltage board and fuse cabinet installs heat dissipation mechanism.

Further, heat dissipation mechanism includes fan, intake pipe, outlet duct, water-cooled tube, water tank, compressor and evaporimeter, and the intake pipe that the fan is connected is located the inside of low-voltage cabinet and fuse cabinet respectively, and the outlet duct that the fan is connected extends to the outside of box, and the water-cooled tube distributes at the inner wall of high-voltage cabinet, and water tank and compressor are installed in the high-voltage cabinet, and the evaporimeter is installed in the fuse cabinet, and the water-cooled tube establishes ties water tank, compressor and evaporimeter.

Further, a valve plate is arranged on the T-shaped pipeline of the air inlet pipe.

The intelligent prefabricated substation has the advantages that when the switch falls down in a rotating mode, the movable contact is in contact with the fixed contact, power-on is completed, when the switch rises in a rotating mode, power-on is disconnected, the movable contact is connected with the lightning arrester through a wire, the lightning arrester prevents voltage from damaging other equipment, a bus is conveniently installed in the wall bushing, meanwhile, the purpose of protecting the bus is achieved, the voltage transformer provides a power source for measurement, measurement and protection, the type and the phase of a fault are judged according to signals provided by the voltage transformer, a fault signal is sent out, ferromagnetic resonance can be avoided to the maximum extent, the fuse plays a role of protecting a circuit, when the fault or the wrong wiring of personnel and other reasons happen, the high-voltage isolating switch can achieve cut-off rapidly, both air cooling and water cooling are installed in the substation, and the internal temperature of the substation is rapidly reduced.

Drawings

FIG. 1 is a perspective view of an embodiment of the present invention;

FIG. 2 is an overall front view of an embodiment of the present invention;

FIG. 3 is an internal structural view of an embodiment of the present invention;

FIG. 4 is a block diagram of a high voltage isolator switch according to an embodiment of the present invention;

fig. 5 is an enlarged view at a of fig. 4 of the embodiment of the present invention.

In the figure: 1. a box body; 11. heat dissipation holes; 12. an electric appliance stand; 121. a partition plate; 2. a box door; 3. a high-voltage cabinet; 31. a voltage transformer; 32. a high voltage circuit breaker; 33. a lightning arrester; 34. a high voltage isolation switch; 341. a first post insulator; 3411. a stationary contact; 342. a second post insulator; 343. a switch; 3431. a movable contact; 35. a wall bushing; 4. a low-voltage cabinet; 41. a transformer; 42. a load meter; 43. a low-voltage circuit breaker; 5. a fuse cabinet; 51. a wire outlet sleeve; 52. a wire inlet sleeve; 53. a fuse; 6. a heat dissipation mechanism; 61. a fan; 62. an air inlet pipe; 63. an air outlet pipe; 64. a water-cooled tube; 65. a water tank; 66. a compressor; 67. an evaporator.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, an intelligent preassembled transformer substation according to the present invention is further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Please refer to fig. 1, an intelligent pre-installed substation includes a box 1 and a plurality of rows of box doors 2 distributed on the front surface of the box 1, heat dissipation holes 11 are symmetrically processed on the top of two side walls of the box 1, the heat dissipation holes 11 are respectively installed on the surface of the box 1 for discharging heat above the box 1 and increasing the heat discharge speed, the internal temperature of the box 1 is reduced, and an electrical appliance rack 12 for placing and placing elements is installed inside the box 1.

Referring to fig. 2, a plurality of partition boards 121 installed in an electrical appliance rack 12 separate an inner space of a box body 1, and divide the inner space into a high-voltage cabinet 3, a low-voltage cabinet 4 and a fuse cabinet 5, the high-voltage cabinet 3, the low-voltage cabinet 4 and the fuse cabinet 5 are distributed side by side, a plurality of box doors 2 and the corresponding high-voltage cabinet 3, the low-voltage cabinet 4 and the fuse cabinet 5 form a closed space after being closed, and the high-voltage cabinet 3, the low-voltage cabinet 4 and the fuse cabinet 5 are displayed after the box doors 2 are opened.

Referring to fig. 3, a wall bushing 35 extending to the outside of the housing 1 is installed on a side surface of the high voltage cabinet 3, a plurality of mutually independent voltage transformers 31, high voltage circuit breakers 32, arresters 33 and high voltage isolating switches 34 are isolated in the high voltage cabinet 3, one end of each voltage transformer 31 is electrically connected to the high voltage circuit breaker 32 through a wire, the voltage transformer 31 is electrically connected to one end of each high voltage isolating switch 34 through the high voltage circuit breaker 32, the arresters 33 are electrically connected to the other end of each high voltage isolating switch 34 through wires, the stationary contacts 3411 are connected to the high voltage circuit breakers 32 through wires, the movable contacts 3431 are connected to the arresters 33 through wires, a bus is conveniently installed in the wall bushing 35, and the purpose of protecting the bus is also achieved, the voltage transformers 31 provide power for measurement, metering, protection and the like, the type and phase of a fault are determined according to signals provided by the voltage transformers 31, the high-voltage isolating switch 34 sends out a fault signal, ferromagnetic resonance can be avoided to the maximum extent, the fuse 53 plays a role in protecting a circuit, and when the fault occurs or the personnel misconnection occurs and the like, the high-voltage isolating switch 34 can realize interception quickly and quit the device.

The high-voltage board 3, the bottom installation heat dissipation mechanism 6 of low-voltage board 4 and fuse cabinet 5, heat dissipation mechanism 6 includes fan 61, intake pipe 62, outlet duct 63, water-cooling pipe 64, the water tank 65, compressor 66 and evaporimeter 67, the intake pipe 62 that fan 61 connects is located the inside of low-voltage board 4 and fuse cabinet 5 respectively, install the valve plate on the T type pipeline of intake pipe 62, the outlet duct 63 that fan 61 connects extends to the outside of box 1, the pipeline switching in the intake pipe 62 can be adjusted when the valve plate rotates, water-cooling pipe 64 distributes at the inner wall of high-voltage board 3, water tank 65 and compressor 66 are installed in high-voltage board 3, evaporimeter 67 is installed in fuse cabinet 5, water-cooling pipe 64 connects water tank 65, compressor 66 and evaporimeter 67 in series, the water of water-cooling pipe 64 is with compressor 66 and the continuous circulation of evaporimeter 67.

A transformer 41, a load meter 42 and a low-voltage circuit breaker 43 are installed in the low-voltage cabinet 4, the transformer 41 is installed at the bottom of the low-voltage cabinet 4, a plurality of low-voltage circuit breakers 43 which are arranged in parallel are installed above the transformer 41, the load meter 42 is connected with one end of each low-voltage circuit breaker 43, and the transformer 41, the load meter 42 and the low-voltage circuit breakers 43 are connected.

The fuse cabinet 5 comprises an outgoing line sleeve 51, an incoming line sleeve 52 and a fuse 53, the fuse 53 is provided with an insulating base at the bottom of the fuse 53, two ends of the fuse 53 are respectively arranged to be connected with the outgoing line sleeve 51 and the incoming line sleeve 52, a lead connected in the incoming line sleeve 52 is connected with the lightning arrester 33, the lead connected in the outgoing line sleeve 51 is connected with the load meter 42, and the lightning arrester 33 prevents voltage from damaging other equipment.

Referring to fig. 4-5, a first post insulator 341 and a second post insulator 342 of the high voltage isolation switch 34, a stationary contact 3411 is installed on the top of the first post insulator 341, a rotating switch 343 is installed on the top of the second post insulator 342, a movable contact 3431 connected to and conducted with the stationary contact 3411 is connected to the front end of the switch 343, when the switch 343 is rotated and dropped, the movable contact 3431 is contacted with the stationary contact 3411 to complete power-on, a clamping plate on the switch 343 is clamped on the first post insulator 341 to complete locking to avoid eliminating the thickness of a locking structure at the connection, and when the switch 343 is rotated and raised, the power-on is cut off.

The working principle is as follows: when the switch 343 falls down by rotation, the movable contact 3431 contacts with the stationary contact 3411 to complete electrification, the card board on the switch 343 is clamped on the first post insulator 341 to complete locking and avoid eliminating the single thin locking structure at the joint, when the switch 343 rises by rotation, the electrification is cut off, the movable contact 3431 is connected with the lightning arrester 33 by a lead, a bus is conveniently installed in the wall bushing 35, and the purpose of protecting the bus is also achieved, the voltage transformer 31 provides a power supply for measurement, metering and protection, etc., according to the signal provided by the voltage transformer 31, the type and the phase of the fault are judged, a fault signal is sent out, ferromagnetic resonance can be avoided to the maximum extent, the fuse 53 plays a role of protecting a circuit, when the fault or the wrong wiring of personnel occurs, the high-voltage isolating switch 34 quickly realizes interception, and withdraws the device, and both air cooling and water cooling are simultaneously installed in a transformer substation, rapidly reducing the temperature therein.

In summary, the following steps: this intelligent prepackage type transformer substation, movable contact 3431 takes place the contact with stationary contact 3411 when switch 343 falls in the rotation, accomplish the circular telegram, switch 343 is when rotatory when rising, the disconnection circular telegram, movable contact 3431 passes through the wire with arrester 33 and is connected, arrester 33 prevents that voltage from damaging other equipment, conveniently install the generating line in the wall bushing 35, also play the purpose of protection generating line simultaneously, voltage transformer 31 provides the power for measurement, protection etc. according to the signal that voltage transformer 31 provided, judge the type and the looks of trouble, send the fault signal, can also furthest avoid ferromagnetic resonance, fuse 53 plays the effect of protection circuit, when reasons such as breaking down or personnel's misconnection, high voltage isolator 34 realizes fast intercepting, utilize wind cooling and water cooling both to install in the transformer substation simultaneously, the quick temperature of its inside that reduces.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides an intelligent prepackage type transformer substation which characterized in that: the box comprises a box body (1) and a plurality of rows of box doors (2) distributed on the front surface of the box body (1), wherein heat dissipation holes (11) are symmetrically formed in the tops of two side walls of the box body (1) and used for discharging heat above the box body (1), and an electric appliance rack (12) for placing and elements is arranged in the box body (1);

the internal space of the box body (1) is isolated by a plurality of clapboards arranged in the electric appliance frame (12) and is divided into a high-voltage cabinet (3), a low-voltage cabinet (4) and a fuse cabinet (5), and the box bodies (1) form a closed space after the box doors (2) and the corresponding high-voltage cabinet (3), low-voltage cabinet (4) and fuse cabinet (5) are closed;

the side surface of the high-voltage cabinet (3) is provided with a wall bushing (35) extending to the outside of the box body (1), the inside of the high-voltage cabinet (3) is respectively isolated with a plurality of mutually independent voltage transformers (31), a high-voltage circuit breaker (32), an arrester (33) and a high-voltage isolating switch (34), one end of each voltage transformer (31) is electrically connected to the high-voltage circuit breaker (32) through a lead, the voltage transformer (31) is electrically connected to one end of the high-voltage isolating switch (34) through the high-voltage circuit breaker (32), the arrester (33) is electrically connected to the other end of the high-voltage isolating switch (34) through a lead, a first pillar insulator (341) and a second pillar insulator (342) of the high-voltage isolating switch (34), the top of the first pillar insulator (341) is provided with a static contact (3411), and the top of the second pillar insulator (342) is, the front end of the switch (343) is connected with a movable contact (3431) which is connected and conducted with the fixed contact (3411);

a transformer (41), a load measuring instrument (42) and a low-voltage circuit breaker (43) are installed in the low-voltage cabinet (4), the transformer (41) is installed at the bottom of the low-voltage cabinet (4), a plurality of low-voltage circuit breakers (43) which are arranged side by side are installed above the transformer (41), and one ends of the load measuring instrument (42) and the low-voltage circuit breakers (43) are connected;

fuse cabinet (5) are including going out line sleeve pipe (51), inlet wire sleeve pipe (52) and fuse (53), the bottom installation insulator foot of fuse (53), the both ends of fuse (53) set up respectively and connect with outlet wire sleeve pipe (51) and inlet wire sleeve pipe (52), the wire of inlet wire sleeve pipe (52) internal connection meets with arrester (33), the wire of outlet wire sleeve pipe (51) internal connection is connected with load meter (42).

2. An intelligent pre-installed substation according to claim 1, characterized in that: the static contact (3411) is connected with a high-voltage circuit breaker (32) through a conducting wire, and the movable contact (3431) is connected with an arrester (33) through a conducting wire.

3. An intelligent pre-installed substation according to claim 1, characterized in that: the bottom ends of the high-voltage cabinet (3), the low-voltage cabinet (4) and the fuse cabinet (5) are provided with heat dissipation mechanisms (6).

4. An intelligent pre-installed substation according to claim 3, characterized in that: heat dissipation mechanism (6) include fan (61), intake pipe (62), outlet duct (63), water-cooling tube (64), water tank (65), compressor (66) and evaporimeter (67), intake pipe (62) that fan (61) are connected are located the inside of low-voltage cabinet (4) and fuse cabinet (5) respectively, outlet duct (63) that fan (61) are connected extend to the outside of box (1), water-cooling tube (64) distribute the inner wall in high-voltage cabinet (3), install in high-voltage cabinet (3) water tank (65) and compressor (66), install in fuse cabinet (5) evaporimeter (67), water-cooling tube (64) series connection water tank (65), compressor (66) and evaporimeter (67).

5. An intelligent pre-installed substation according to claim 4, characterized in that: a valve plate is arranged on the T-shaped pipeline of the air inlet pipe (62).