CN207705675U - A kind of SF6 gas-insulateds PT cabinets and distribution system - Google Patents

Abstract

The utility model discloses a kind of SF6 gas-insulateds PT cabinets and distribution systems, belong to intelligent power equipment technical field.It includes cabinet and voltage transformer, and the voltage transformer is set at the top of the cabinet.The SF6 gas-insulated PT cabinets of the utility model, voltage transformer is arranged at the top of cabinet and is set up in parallel with control DTU, it is compact-sized reasonable, the control DTU height of PT cabinets keeps existing operation height, it is conveniently operated the operation of worker, the normal use that ensure that PT cabinets is conducive to promoting the use of for PT cabinets.

Description

A kind of SF6 gas-insulateds PT cabinets and distribution system

Technical field

The utility model belongs to intelligent power equipment technical field, more specifically to a kind of SF6 gas-insulateds PT cabinets And distribution system.

Background technology

PT cabinets, that is, voltage transformer cabinet, are usually directly attached on busbar, and the high voltage on busbar is converted into 100V Voltage measurement element (for measuring the voltage of busbar and the control source amount of power meter, electric energy meter as each branch etc.) With relay protection element (voltage-type is protected and input quantity with direction protection), to detect busbar voltage and realize defencive function.

Main installation voltage transformer, isolation knife, fuse and arrester etc. inside PT cabinets used at present, in order to solve The problem of PT cabinets are matched with ring main unit, through retrieval, Chinese patent CN201520727280.6 discloses a kind of distribution looped network PT cabinets, including three-stations load switch, arrester, voltage transformer, fuse, voltage transformer, busbar and cabinet, three stations The upper end of on-load switch is docked with busbar, and the fuse of three-stations load switch and lower end is electrically connected, fuse and lower end It is electrically connected between voltage transformer, arrester is located between three-stations load switch and voltage transformer, and three station loads are opened Pass, arrester, voltage transformer, fuse, voltage transformer and busbar are each provided at the inside of cabinet；In addition Chinese patent CN201610157044.4 discloses a kind of novel looped network SF6 gas-insulateds PT cabinets, including cabinet, and gas tank is equipped in cabinet And voltage transformer, voltage transformer are electrically connected by cable with gas tank.By the knot for analyzing above two patent disclosure PT cabinets Structure, voltage transformer are arranged in the bottom of gas tank, and since the inner space of PT cabinets is limited, and the volume of voltage transformer is larger, So, in order in PT bottom of cabinet portion installation voltage transformer, it has to increase the height dimension of PT cabinets, so that entire PT The height increase at least 0.5m (current calibrated altitude is 1.4m) of cabinet, operator's operation of general height is difficult operation installation Control DTU at top, influences distribution system and promotes the use of.

Invention content

1. to solve the problems, such as

For existing since voltage transformer installation dimension is excessive, the whole height of PT cabinets is caused to increase so that operative employee People is difficult to operation and control DTU, and to influence the problem of distribution system is promoted the use of, the utility model provides a kind of SF6 gases Insulate PT cabinets, is optimized by the structure to PT cabinets so that the height of PT cabinets does not change, and ensures the smooth input of distribution system It uses.

The another object of the utility model is to provide a kind of distribution system with above-mentioned SF6 gas-insulateds PT cabinets, is protecting Under the premise of card structure height is constant, optimize the structure of PT cabinets so that entire distribution system structure is more compact, reasonable, is convenient for Distribution system with PT cabinets is promoted the use of.

2. technical solution

To solve the above-mentioned problems, technical solution used by the utility model is as follows：

The SF6 gas-insulated PT cabinets of the utility model, including cabinet and voltage transformer, voltage transformer setting At the top of the cabinet.

Further include disconnecting switch and fuse, the cabinet packet in a kind of possible embodiment of the utility model Cable vault is included, is arranged on the top of cable vault full of SF6 gases in disconnecting switch, fuse is set up in parallel with disconnecting switch, is melted Disconnected device is electrically connected with the voltage transformer.

In a kind of possible embodiment of the utility model, the voltage transformer includes several junction blocks, isolation Switch includes inlet wire seat and output seat, and inlet wire seat is located at the lower section of output seat, and cabinet top part is equipped with the first installing zone and second Installing zone offers through-hole in the side of the first installing zone, keeps apart wherein the first installing zone is located above the disconnecting switch The output seat of pass passes through the junction block of through-hole and voltage transformer to connect by connecting line；Second installing zone is located at the first installing zone Front side.

Further include control DTU in a kind of possible embodiment of the utility model, controls DTU and disconnecting switch is electrical It connects and is arranged in the second installing zone.

In a kind of possible embodiment of the utility model, the disconnecting switch further includes on-load switch, is grounded and opens It closes and ground connection display, wherein on-load switch, earthing switch and ground connection display accesses circuit, on-load switch is with earthing switch perpendicular Histogram is to being set up in parallel.

In a kind of possible embodiment of the utility model, the bottom of the cable vault offers entrance hole, inlet wire The diameter in hole is slightly larger than the outer diameter of connection cable, and connection cable connect with inlet wire seat and introduces high-voltage electricity.

In a kind of possible embodiment of the utility model, the size and mutual induction of voltage of first installing zone The appearance and size size of device is consistent, and the center of the first installing zone and the center of disconnecting switch are in same vertical line.

In a kind of possible embodiment of the utility model, the through-hole is configured with washer, washer and connecting line set After connecing, surrounding is connected on through-hole.

In a kind of possible embodiment of the utility model, the voltage transformer and disconnecting switch are wide, wherein Voltage transformer is single-phase or Integral three-phase.

The utility model provides a kind of distribution system, including above-mentioned SF6 gas-insulated PT cabinets.

3. advantageous effect

Compared with the prior art, the beneficial effects of the utility model are：

(1) the SF6 gas-insulated PT cabinets of the utility model, by voltage transformer be arranged the top of cabinet and with control DTU is set up in parallel, compact-sized reasonable, and the control DTU height of PT cabinets keeps existing operation height, is conveniently operated the behaviour of worker Make, ensure that the normal use of PT cabinets, be conducive to promoting the use of for PT cabinets；

(2) the SF6 gas-insulated PT cabinets of the utility model, the inlet wire seat of disconnecting switch are located at the lower section of output seat, cabinet The first installing zone at the top of body is located above disconnecting switch, offers through-hole in the side of the first installing zone, facilitates and keep apart The electric connection between voltage transformer is closed, while being optimized in structure, connecting line is shortened, avoids the circuit of PT cabinets Mix；

(3) the SF6 gas-insulated PT cabinets of the utility model, cabinet top are divided into the first installing zone and the second installing zone, Voltage transformer is arranged in first installing zone, and the setting of the second installing zone controls DTU, in the actual production process, the two regions position The delimitation set can effectively determine the component setting inside cabinet, orderly progress easy to produce；

(4) the SF6 gas-insulated PT cabinets of the utility model, the size of the first installing zone and voltage transformer it is outer Shape size is consistent, and the center of the first installing zone and the center of disconnecting switch are in same vertical line, convenient for determining voltage The position of mutual inductor so that the connection line of voltage transformer and disconnecting switch is most short；

(5) the SF6 gas-insulated PT cabinets of the utility model, through-hole be configured with washer, washer can by through-hole with connect The gap of line is sealed, and water and dust is avoided to enter in cabinet, reduces the corrosion of connecting part；

(6) the utility model is simple in structure, reasonable design, easily fabricated.

Description of the drawings

The technical solution of the utility model is described in further detail below with reference to drawings and examples, still It should be known that these attached drawings only design for task of explanation, therefore not as the restriction of the scope of the utility model.In addition, Unless otherwise indicated, these attached drawings are meant only to conceptually illustrate structure construction described herein, without to carry out to scale It draws.

Fig. 1 is the structural schematic diagram of the SF6 gas-insulated PT cabinets of the utility model；

Fig. 2 is the side view of the SF6 gas-insulated PT cabinets of the utility model；

Fig. 3 is the vertical view of the SF6 gas-insulated PT cabinets of the utility model.

In figure：1, cabinet；110, cable vault；120, through-hole；130, the first installing zone；140, the second installing zone；150, it pads Circle；2, voltage transformer；210, junction block；3, disconnecting switch；310, inlet wire seat；320, seat is exported；330, on-load switch；340、 Earthing switch；350, ground connection display；4, connecting line；5, DTU is controlled；6, fuse.

Specific implementation mode

Hereafter to the detailed description of the exemplary embodiment of the utility model with reference to attached drawing, which forms the one of description Part has been shown as example the enforceable exemplary embodiment of the utility model in the figure.Although these exemplary realities Example is applied to be described in sufficient detail so that those skilled in the art can implement the utility model, it is to be understood that it can be realized His embodiment and can various changes can be made to the utility model in the case where not departing from the spirit and scope of the utility model.Hereafter Required the scope of the utility model is not limited to the more detailed description of the embodiments of the present invention, and only The description of the characteristics of in order to be illustrated and not limit to the utility model and feature, to propose to execute the utility model Best mode, and it is sufficient to make those skilled in the art that can implement the utility model.Therefore, the scope of the utility model only by Appended claims limit.

Hereafter the detailed description of the utility model and example embodiment are more fully understood in combination with attached drawing, wherein this reality It is identified by reference numeral with novel element and feature.

Embodiment 1

As shown in Figure 1, Figure 2 and Figure 3, a kind of SF6 gas-insulateds PT cabinets, including cabinet 1, voltage transformer 2, disconnecting switch 3, DTU5 and fuse 6 are controlled, wherein voltage transformer 2 is set to 1 top of cabinet, and voltage transformer 2 is single-phase or three-phase one Body formula.Since the inlet wire seat of existing disconnecting switch is bigger, the occupied space in cable vault is big, if voltage transformer is placed in The lower section of disconnecting switch, then the space of cable vault sufficiently large must can just be put into voltage transformer, so necessarily so that cabinet Volume increase, from figure 1 it appears that voltage transformer to be placed in the top of cabinet, the space at the top of cabinet obtains effectively It utilizes, the size of cabinet itself need not increase, and facilitate the installation of PT cabinets.

The cabinet 1 of the present embodiment includes cable vault 110, is arranged in cable vault 110 full of SF6 gases in disconnecting switch 3 Top, fuse 6 are set up in parallel with disconnecting switch 3, and fuse 6 is electrically connected with voltage transformer 2.Voltage transformer 2 will be high Voltage is converted into normal low voltage (100V, 220V), and for measurement, metering, protection, fuse 6 is used for overloading in circuit Or when short circuit, when electric current be more than specified value after a certain period of time, make Melt molten with the heat that itself generates and cut-off circuit Switching device.

Wherein voltage transformer 2 includes several junction blocks 210, and 1 top part of cabinet is pacified equipped with the first installing zone 130 and second Area 140 is filled, wherein the first installing zone 130 is located at 3 top of the disconnecting switch, is offered in the side of the first installing zone 130 logical Hole 120,

In Fig. 1, disconnecting switch 3 includes inlet wire seat 310, output seat 320, on-load switch 330, earthing switch 340 and connects Ground shows 350, and the output seat 320 of disconnecting switch 3 passes through the junction block 210 of through-hole 120 and voltage transformer 2 by connecting line 4 Connection；Second installing zone 140 is located at the front side of the first installing zone 130.DTU5 is controlled to be electrically connected and be arranged with disconnecting switch 3 In second installing zone 140.In addition, the appearance and size size phase one of the size of the first installing zone 130 and voltage transformer 2 It causes, the center of the first installing zone 130 is with the center of disconnecting switch 3 in same vertical line.

Wherein on-load switch 330, earthing switch 340 and ground connection display 350 access circuit, on-load switch 330 and ground connection Switch 340 is set up in parallel in vertical direction.

Further, the bottom of cable vault 110 offers entrance hole, and the diameter of entrance hole is outer slightly larger than connection cable Diameter, connection cable connect with inlet wire seat 310 and introduce high-voltage electricity.

In order to reduce the corrosion of connecting part, through-hole 120 is configured with washer 150, after washer 150 is socketed with connecting line 4, surrounding It is connected on through-hole 120, the gap of through-hole and connecting line 4 can be sealed by washer 150, and water and dust is avoided to enter cabinet It is interior.

By the SF6 gas-insulated PT cabinets of the present embodiment in distribution system, being more conducive to the popularization of distribution system to make With.

Claims (8)

1. a kind of SF6 gas-insulateds PT cabinets, including cabinet (1) and voltage transformer (2), which is characterized in that the voltage is mutual Sensor (2) is set at the top of the cabinet (1)；

Further include disconnecting switch (3) and fuse (6), the cabinet (1) includes cable vault (110), is filled in disconnecting switch (3) Full SF6 gases are arranged on the top of cable vault (110), and fuse (6) is set up in parallel with disconnecting switch (3), fuse (6) and institute The voltage transformer (2) stated is electrically connected；

The voltage transformer (2) includes several junction blocks (210), and disconnecting switch (3) includes inlet wire seat (310) and output seat (320), inlet wire seat (310) is located at the lower section of output seat (320), and cabinet (1) top part is equipped with the first installing zone (130) and second Installing zone (140), wherein the first installing zone (130) is located above the disconnecting switch (3), the one of the first installing zone (130) Side offers through-hole (120), and the output seat (320) of disconnecting switch (3) passes through through-hole (120) and voltage mutual by connecting line (4) The junction block (210) of sensor (2) connects；Second installing zone (140) is located at the front side of the first installing zone (130).

2. SF6 gas-insulateds PT cabinets according to claim 1, which is characterized in that further include control DTU (5), control DTU (5) it is electrically connected and is arranged in the second installing zone (140) with disconnecting switch (3).

3. SF6 gas-insulateds PT cabinets according to claim 1, which is characterized in that the disconnecting switch (3) further includes bearing Lotus switchs (330), earthing switch (340) and ground connection display (350), wherein on-load switch (330), earthing switch (340) and connects Ground shows that (350) access circuit, and on-load switch (330) is set up in parallel with earthing switch (340) in vertical direction.

4. SF6 gas-insulateds PT cabinets according to claim 1, which is characterized in that open the bottom of the cable vault (110) Equipped with entrance hole, the diameter of entrance hole is slightly larger than the outer diameter of connection cable, and connection cable connect with inlet wire seat (310) and by high pressure Electricity introduces.

5. SF6 gas-insulateds PT cabinets according to claim 1, which is characterized in that the ruler of first installing zone (130) Very little size is consistent with the appearance and size size of voltage transformer (2), center and the disconnecting switch (3) of the first installing zone (130) Center in same vertical line.

6. SF6 gas-insulateds PT cabinets according to claim 1, which is characterized in that the through-hole (120) is configured with washer (150), with after connecting line (4) socket, surrounding is connected on through-hole (120) washer (150).

7. SF6 gas-insulateds PT cabinets according to claim 1, which is characterized in that the voltage transformer (2) be isolated Switch (3) is wide, and wherein voltage transformer (2) is single-phase or Integral three-phase.

8. a kind of distribution system, which is characterized in that including claim 1 to 7 any one of them SF6 gas-insulated PT cabinets.