CN209250041U - A miniaturized intelligent prefabricated substation - Google Patents

Abstract

The utility model relates to a miniaturized intelligent prefabricated substation, comprising a box shell (1), a low-voltage room and a high-voltage room, and the shell is provided with a high-voltage ring network cabinet (2), a transformer (3), and a low-voltage outlet cabinet ( 4) and distribution network automation room and auxiliary equipment (5), the transformer (3) is located in the middle of the box shell (1); the high-voltage room is located at the right rear of the box shell (1); the distribution network automation room and The auxiliary equipment (5) is wall-mounted and located in the right front of the box shell (1); the low-voltage chamber is located in the left rear of the box shell (1); the overall dimensions of the substation are 2.65 meters wide x 1.35 meters deep x high 1.9 meters, covering an area of 3.58 square meters, covering an area of about 45% of the standard European-style box-type substation, occupying a very small area. The substation of the utility model has the advantages of small size, high intelligence, factory prefabrication, modularization, convenient operation and maintenance, and high automation.

Description

A miniaturized intelligent prefabricated substation

technical field

The invention relates to the technical field of power distribution equipment, in particular to a miniaturized intelligent preinstalled substation.

Background technique

European box transformer is a commonly used power supply equipment. The European-style box-type transformer is to install the transformer and ordinary high and low-voltage electrical equipment in the same metal casing box, and the low-voltage room, transformer room, and high-voltage room are arranged in the shape of a word. The European-style cabinet has mature technology, advanced technology, safety and reliability, and high degree of automation. It can realize factory prefabrication and flexible combination.

Because of the above advantages, the European box has become widely used. However, because ordinary high-voltage load switches, fuses, low-voltage switch cabinets, and power distribution terminals are used in European-style box-type transformers, the volume of European-style box-type transformers is relatively large. Calculated according to the general European-style box transformer: 3.6 meters wide x 2.2 meters deep, it covers an area of 7.92 square meters. In some cities and places with strict land occupation requirements, the size of the land occupation is particularly important.

For example, the Chinese utility model patent whose authorized announcement number is CN203553686 U discloses a small intelligent prefabricated substation, which includes a substation box and an on-load capacity regulating transformer, and is characterized in that it also includes a high-voltage switch built in the substation box. Cabinet and low-voltage combined cabinet, the substation box is divided into high-voltage room and low-voltage room, high-voltage switchgear is installed in the high-voltage room, low-voltage combined cabinet is installed in the low-voltage room, high-voltage room and low-voltage room are respectively equipped with independent switch doors, and the door Intelligent access control is installed, a flame-retardant partition is installed between the high-voltage room and the low-voltage room, and the bottom plate of the low-voltage room of the high-voltage room is provided with incoming and outgoing cable holes. Shutters are installed between the surrounding and the substation box.

Another example is the Chinese utility model patent with the authorized announcement number CN 201051618 Y, which discloses a prefabricated box-type substation with a articulated structure. The prefabricated box-type substation mainly includes a shell; , low-voltage room, transformer room; low-voltage electrical components are set in the low-voltage room, and supports are fixed on the partitions in the low-voltage room; copper busbars are supported on the supports; low-voltage electrical components are hooked to the copper busbars. The copper bar busbar in the low-voltage room is not only an energized conductor, but also a support frame for connecting low-voltage electrical components. Compared with the existing technology, the support frame is reduced, and the space of the low-voltage room is greatly reduced. However, the substation is only suitable for floor installation; and the high-voltage room lacks protection measures, which poses a safety hazard to live workers.

Contents of the invention

In order to solve the above-mentioned technical defects in the prior art, the object of the present invention is to provide a miniaturized intelligent prefabricated substation to solve the problems of large floor space and poor safety performance in the prior art.

A miniaturized intelligent prefabricated substation according to the present invention includes a box shell, a low-voltage room and a high-voltage room. The shell is equipped with a high-voltage ring network cabinet, a transformer, a low-voltage outlet cabinet, a distribution network automation room and auxiliary equipment. The transformer is located in the middle of the box shell; the high-voltage chamber is located at the right rear of the box shell; the distribution network automation room and ancillary equipment are wall-mounted and located at the right front of the box shell; the low-voltage room is located at the left of the box shell Rear: The substation has dimensions of 2.65m wide x 1.35m deep x 1.9m high, and covers an area of 3.58 square meters, which is about 45% of the standard European-style box-type substation, which is extremely small. The substation of the invention has the advantages of small size, high intelligence, factory prefabrication, modularization, convenient operation and maintenance, and high automation.

A miniaturized intelligent prefabricated substation of the present invention is equipped with a power collection room, a communication room and an automation room, adopts optical fiber and GPRS communication, and has a high degree of intelligence; and adopts an embedded structure design, which occupies a very small space; adopts The heat source is effectively controlled by the first-class energy-efficient transformer; the T-shaped heat dissipation channel is adopted, the heat dissipation ventilation and the moisture problem of the cable trench are effectively improved, and the temperature rise requirements of the box transformer are fully met.

Preferably, the high-voltage ring network cabinet is equipped with one bottom incoming line and two outgoing lines, and the two outgoing lines are one rear outgoing line to the transformer, and the other bottom loop outgoing line.

In any of the above schemes, preferably, the transformer is top-in and top-out, and the specification can be 630kVA or below; the low-voltage outlet cabinet is rear-in and bottom-out.

In any of the above schemes, preferably, the distribution network automation room and auxiliary equipment are configured on demand; the power collection room is equipped with electric energy meters, concentrators and reserved intelligent distribution transformer terminals; the communication room is equipped with optical network units ONU and optical splitters , Optical distribution frame ODF and switches, high degree of intelligence.

In any of the above schemes, preferably, the low-voltage room is arranged with a low-voltage outlet cabinet, an emergency power supply room and an automation room; the high-voltage room is arranged with a high-voltage ring network cabinet, a power collection room and a communication room.

In any of the above schemes, it is preferable that the power collection room and the communication room adopt an embedded structure and are located at the left front of the box shell.

In any of the above schemes, preferably, the high-voltage ring network cabinet is provided with an electric operating mechanism; the high-voltage ring network cabinet adopts a CCF layout from left to right.

In any of the above schemes, it is preferred that the high-voltage ring network cabinet is the rear outlet, and the wires enter from the top of the transformer, the cables are easy to install, the direction is beautiful and easy to fix, the installation efficiency of the cables is improved, and the space and occupation are saved. land area.

In any of the above schemes, it is preferred that two cable hoops are provided at the part where the rear part of the high-voltage ring network cabinet leads to the transformer.

In any of the above schemes, it is preferred that the top high-voltage incoming line of the transformer is in the form of a bushing and equipped with a protective cover, which can realize direct plugging and standardization, greatly improving the convenience and reliability of equipment installation; The top low-voltage outlets are in the form of copper bars.

In any of the above schemes, preferably, the low-voltage outlet cabinet is provided with metering current transformers, sampling current transformers, smart meters, fuses, lightning arresters and four-way molded case circuit breakers.

In any of the above solutions, preferably, the upper and lower parts of the left and right sides of the low-voltage outlet cabinet are provided with louvers and cooling holes, which increase the air circulation inside the box-type transformer.

In any of the above schemes, it is preferred that louvers and heat dissipation holes are added around the top cover of the low-voltage outlet cabinet to improve heat dissipation efficiency, and a good heat dissipation effect of the box shell can be achieved through natural air cooling, meeting the temperature requirements. Requirements for upgrading, reducing energy and material consumption.

In any of the above schemes, it is preferable that there is a gap between the outlet cabinet and the high-voltage ring network cabinet, so as to ensure the timely diffusion of heat and effectively improve the ventilation and heat dissipation of the low-voltage outlet cabinet.

In any of the above schemes, it is preferred that the distribution network automation room and auxiliary equipment monitor and manage the status of distribution transformers and components in real time. The distribution network automation room and ancillary equipment monitor and alarm the operation status of the equipment in real time, and send the accident alarm records to the main station through the distribution network automation room and ancillary equipment, so as to quickly and accurately find and provide the specific location and fault information of the faulty equipment, reducing the In the past, the complicated on-site inspections, inspections, and operations were convenient for maintenance and emergency repairs, greatly improved work efficiency, and provided a true, reliable, and accurate basis for the realization of distribution network automation management.

In any of the above schemes, preferably, the rear part of the emergency power supply room enters the line from the transformer room, and the right side exits to the low-voltage cabinet.

In any of the above schemes, it is preferable that an inspection manhole is provided on the lower left side of the low-voltage outlet cabinet and the emergency power supply room.

In any of the above schemes, it is preferable that the transformer adopts a primary energy efficiency transformer, which greatly reduces the energy efficiency of the heat source.

In any of the above schemes, preferably, the distribution network automation and auxiliary equipment adopt wall-mounted DTUs, which greatly saves space.

To sum up, the miniaturized intelligent prefabricated substation of the present invention has the following advantages: small size, saving about 55% of the floor area, greatly improving the use efficiency of materials, and can be used in cities with strict floor space requirements. It has great advantages in local and local conditions; it is equipped with electric operating mechanism, distribution network automation room and auxiliary equipment to realize real-time monitoring and management of the status of distribution transformers and various components, meeting the needs of smart distribution network construction according to local conditions; equipped with emergency power supply room and Manholes greatly facilitate operation and maintenance; louvers and heat dissipation holes are added to the side of the box shell and around the bottom of the top cover to improve heat dissipation efficiency, and natural air cooling can achieve a good heat dissipation effect of the box shell to meet Meet the temperature rise requirements, reduce energy and material consumption.

Description of drawings

Fig. 1 is a front view of a preferred embodiment of a miniaturized intelligent prefabricated substation according to the present invention.

Fig. 2 is a side view of the embodiment shown in Fig. 1 of the miniaturized intelligent prefabricated substation according to the present invention.

Fig. 3 is a structural schematic diagram of the embodiment shown in Fig. 1 of the miniaturized intelligent prefabricated substation according to the present invention, with the outer door and the low-voltage outlet cabinet door removed.

Fig. 4 is a left side view of the embodiment shown in Fig. 3 of the miniaturized intelligent prefabricated substation according to the present invention.

Fig. 5 is a right side view of the embodiment shown in Fig. 3 of the miniaturized intelligent prefabricated substation according to the present invention.

Fig. 6 is a top view of the embodiment shown in Fig. 1 of the miniaturized intelligent prefabricated substation according to the present invention with the top cover of the box shell removed.

In the attached picture:

Box shell 1, high-voltage ring network cabinet 2, transformer 3, low-voltage outlet cabinet 4, distribution network automation room and auxiliary equipment 5, electric operating mechanism 6, metering current transformer 7, watt-hour meter 8, emergency power supply box 10, fuse 11, surge arrester 12, molded case circuit breaker 13, intelligent distribution transformer terminal 14, protective net 15, optical network unit ONU 16, optical splitter 17, optical distribution frame ODF 18, switch 19.

Detailed ways

The following description is merely exemplary in nature and not intended to limit the disclosure, application or use. The specific implementation of the miniaturized intelligent prefabricated substation of the present invention will be further described below in conjunction with the accompanying drawings.

As shown in Fig. 1-Fig. 3, the structure schematic diagram of a preferred embodiment of the miniaturized intelligent prefabricated substation according to the present invention. The purpose of the present invention is to provide a miniaturized intelligent prefabricated substation, including a box shell 1, a low-voltage room and a high-voltage room, and the shell is equipped with a high-voltage ring network cabinet 2, a transformer 3, a low-voltage outlet cabinet 4 and distribution network automation Room and auxiliary equipment 5, the transformer 3 is located in the middle of the box shell 1; the high-voltage room is located at the right rear of the box shell 1, with a size of 900mm×1350mm; the distribution network automation room and auxiliary equipment 5 are wall-mounted, located The right front of the box shell 1; the low-voltage chamber is located at the left rear of the box shell 1, and its size is 700mm×1350mm; square meters, occupying an area of about 45% of the standard European-style box-type substation, occupying a very small area. The substation of the invention has the advantages of small size, high intelligence, factory prefabrication, modularization, convenient operation and maintenance, and high automation. The automation room adopts an embedded structure design, and the size is 800mm wide x 150mm deep x 1500mm high.

In this embodiment, the high-voltage ring network cabinet 2 is equipped with one bottom incoming line and two outgoing lines. The two outgoing lines are one rear outgoing line to the transformer 3 and the other bottom loop outgoing line.

In this embodiment, the transformer 3 is top incoming and top outgoing, and the specification can be 630kVA or below; the low voltage outgoing line cabinet 4 is rear incoming and bottom outgoing.

In this embodiment, the distribution network automation room and auxiliary equipment 5 are configured as required; the power collection room 9 is equipped with an electric energy meter 8, a concentrator 21 and a reserved intelligent distribution transformer terminal 14; the communication room 10 is equipped with an optical network unit ONU17, The optical splitter 18, the optical distribution frame ODF19 and the switch 20 adopt optical fiber communication and have a high degree of intelligence.

In this embodiment, the low-voltage room is arranged with a low-voltage outlet cabinet 4 , an emergency power supply room and an automation room; The size of the ring network cabinet is: width 1050mm × depth 800mm × height 1650mm, the power collection room adopts embedded structure design, the size is: width 600mm × depth 150mm × height 600mm, the communication room adopts embedded structure design, the size is: 600mm × depth 150mm x 900mm high.

In this embodiment, the power collection room 9 and the communication room 10 adopt an embedded structure and are located at the left front of the box shell 1 .

In this embodiment, the high-voltage ring network cabinet 2 is provided with an electric operating mechanism 6 (as shown in FIG. 5 ); the high-voltage ring network cabinet 2 adopts a CCF layout from left to right.

In this embodiment, the high-voltage ring network cabinet 2 is the rear outlet, and the wires enter from the top of the transformer. The cables are easy to install, the direction is beautiful, and they are easy to fix, which improves the installation efficiency of the cables and saves space and floor space.

In this embodiment, two cable hoops are provided at the part of the high-voltage ring main unit 2 where the wires go out from the rear to the transformer.

In this embodiment, the high-voltage incoming line at the top of the transformer 3 is in the form of a bushing and is equipped with a protective net 15 and a protective cover 16, which can realize direct plugging and unplugging, standardized operations, and greatly improve the convenience and reliability of equipment installation; The top low-voltage outlet of the transformer 3 is in the form of a copper bar.

As shown in Fig. 4-Fig. 5, the left side view of the embodiment shown in Fig. 3 of the miniaturized intelligent prefabricated substation according to the present invention.

In this embodiment, the low-voltage outlet cabinet 4 is provided with a metering current transformer 7 , a sampling current transformer, a smart meter, a fuse 11 , a lightning arrester 12 and a four-way molded case circuit breaker 13 .

In this embodiment, the upper and lower parts of the left and right sides of the low-voltage outlet cabinet 4 are provided with louvers and cooling holes, which increase the air circulation inside the box-type transformer.

In this embodiment, louvers and heat dissipation holes are added around the top cover of the low-voltage outlet cabinet 4 to improve the heat dissipation efficiency, and a good heat dissipation effect of the box shell can be achieved through natural air cooling, which meets the temperature rise requirement. Reduce energy and material consumption.

In this embodiment, there is a gap between the outlet cabinet 4 and the high-voltage ring network cabinet 2 (as shown in FIG. 6 ), which ensures the timely diffusion of heat and effectively improves the ventilation and heat dissipation of the low-voltage outlet cabinet.

In this embodiment, the distribution network automation room and auxiliary equipment 5 monitor and manage the status of distribution transformers and components in real time. The distribution network automation room and ancillary equipment 5 monitor and alarm the operation status of the equipment in real time, and send the accident alarm records of the master station through the distribution network automation room and ancillary equipment 5, so as to quickly and accurately find and provide the specific location and fault information of the faulty equipment , Reduce the past complicated on-site inspection, inspection, and operation work, facilitate maintenance and emergency repairs, greatly improve work efficiency, and provide a true, reliable, and accurate basis for realizing distribution network automation management.

In this embodiment, the rear part of the emergency power supply room enters the line from the transformer room, and the line exits from the right side to the low-voltage cabinet. The emergency power supply room can cut off the low-voltage outgoing line of the transformer when an emergency occurs in the transformer or ring main unit, and connect to the emergency power supply to realize normal power supply to the low-voltage cabinet.

In this embodiment, a maintenance manhole is provided on the lower left side of the low-voltage outlet cabinet 4 and the emergency power supply room, and the size of the maintenance manhole is 600mm×400mm.

In this embodiment, the transformer 3 adopts a first-stage energy efficiency transformer, which greatly reduces the energy efficiency of the heat source.

In this embodiment, the distribution network automation and auxiliary equipment 5 adopts a wall-mounted DTU, which greatly saves space.

It is not difficult for those skilled in the art to understand that the miniaturized intelligent prefabricated substation of the present invention includes any combination of parts in this specification. Due to space limitation and to make the description concise, these combinations are not introduced in detail here, but after reading this description, the scope of the present invention constituted by any combination of the parts constituting this description is self-evident.

Claims (20)

1. A miniaturized intelligent prefabricated substation, including a box shell (1), a low-voltage room and a high-voltage room, and the shell is equipped with a high-voltage ring network cabinet (2), a transformer (3), and a low-voltage outlet cabinet (4) And distribution network automation room and auxiliary equipment (5), characterized in that: the transformer (3) is located in the middle of the box shell (1); the high-voltage room is located at the right rear of the box shell (1); the distribution network automation room and The auxiliary equipment (5) is wall-mounted and located at the right front of the box shell (1); the low-voltage chamber is located at the left rear of the box shell (1). 2. The miniaturized intelligent prefabricated substation according to claim 1, characterized in that: the substation has an external dimension of 2.65 meters in width x 1.35 meters in depth x 1.9 meters in height, and covers an area of 3.58 square meters. 3. The miniaturized intelligent prefabricated substation according to claim 1, characterized in that: the high-voltage ring main unit (2) is equipped with one bottom incoming line and two outgoing lines, and the two outgoing lines are one rear outgoing line to the transformer (3), another way out of the bottom loop. 4. The miniaturized intelligent prefabricated substation according to claim 1, characterized in that: the transformer (3) is top incoming and top outgoing; the low-voltage outgoing cabinet (4) is rear incoming and bottom outgoing. 5. The miniaturized intelligent prefabricated substation according to claim 1, characterized in that: distribution network automation room and auxiliary equipment (5) are configured on demand; power collection room (9) is equipped with electric energy meter (8), concentrator (21) and reserved intelligent distribution transformer terminal (14); the communication room (10) is equipped with optical network unit ONU (17), optical splitter (18), optical fiber distribution frame ODF (19) and switch (20). 6. The miniaturized intelligent prefabricated substation according to claim 1, characterized in that: the low-voltage room has a low-voltage outlet cabinet (4), an emergency power supply room and an automation room; the high-voltage room has a high-voltage ring network cabinet ( 2), electricity collection room (9) and communication room (10). 7. The miniaturized intelligent prefabricated substation according to claim 6, characterized in that: the power collection room (9) and the communication room (10) adopt an embedded structure and are located in the left front of the box shell (1). 8. The miniaturized intelligent prefabricated substation according to claim 1 or 3, characterized in that: the high-voltage ring network cabinet (2) is equipped with an electric operating mechanism (6); the high-voltage ring network cabinet (2) is from left to The right adopts the CCF layout type. 9. The miniaturized intelligent prefabricated substation according to claim 1 or 3, characterized in that: the high-voltage ring network cabinet (2) is the rear outlet, and the wires enter from the top of the transformer. 10. The miniaturized intelligent prefabricated substation according to claim 9, characterized in that two cable hoops are provided at the part where the rear part of the high-voltage ring main unit (2) leads to the transformer. 11. The miniaturized intelligent prefabricated substation according to claim 1 or 4, characterized in that: the top high-voltage incoming line of the transformer (3) is in the form of a bushing and equipped with a protective cover (16); the top of the transformer (3) The low-voltage outlets are in the form of copper bars. 12. The miniaturized intelligent prefabricated substation according to claim 1, characterized in that: the low-voltage outlet cabinet (4) is equipped with metering current transformers (7), sampling current transformers, smart meters, fuses (11 ), arrester (12) and four-way molded case circuit breaker (13). 13. The miniaturized intelligent prefabricated substation according to claim 1 or 12, characterized in that: the upper and lower parts of the left and right sides of the low-voltage outlet cabinet (4) are provided with louvers and cooling holes. 14. The miniaturized intelligent prefabricated substation according to claim 1 or 12, characterized in that: shutters and cooling holes are added around the top cover of the low-voltage outlet cabinet (4). 15. The miniaturized intelligent prefabricated substation according to claim 1, characterized in that there is a gap between the outlet cabinet (4) and the high-voltage ring network cabinet (2). 16. The miniaturized intelligent prefabricated substation according to claim 1, characterized in that: the distribution network automation room and auxiliary equipment (5) monitor and manage the status of distribution transformers and components in real time. 17. The miniaturized intelligent prefabricated substation according to claim 6, characterized in that: the rear part of the emergency power supply room enters the line from the transformer room, and the right side exits the line to the low-voltage cabinet. 18. The miniaturized intelligent prefabricated substation according to claim 6, characterized in that: the lower left side of the low-voltage outlet cabinet (4) and the lower part of the emergency power supply room are provided with maintenance manholes. 19. The miniaturized intelligent prefabricated substation according to claim 1 or 4, characterized in that: the transformer (3) adopts a first-class energy efficiency transformer. 20. The miniaturized intelligent prefabricated substation according to claim 1 or 16, characterized in that: distribution network automation and auxiliary equipment (5) adopt wall-mounted DTU.