CN218416881U

CN218416881U - Distribution network self-adaptation differential protection device

Info

Publication number: CN218416881U
Application number: CN202221739074.3U
Authority: CN
Inventors: 江建; 徐峰亮
Original assignee: Xinyang Power Supply Co of State Grid Henan Electric Power Co Ltd
Current assignee: Xinyang Power Supply Co of State Grid Henan Electric Power Co Ltd
Priority date: 2022-07-07
Filing date: 2022-07-07
Publication date: 2023-01-31
Anticipated expiration: 2032-07-07

Abstract

The utility model discloses a distribution network self-adaptation differential protection device belongs to distribution network technical field, and the technical problem that work efficiency is low when having solved moving differential protection device. The box comprises a box body and an auxiliary plate, wherein a box door is arranged on one side of the box body, a first sliding protrusion and a second sliding protrusion which correspond to each other are fixedly arranged on the lower bottom surface of the box body, a third sliding protrusion and a fourth sliding protrusion which correspond to each other are fixedly arranged on the rear side wall of the box body, and the cross sections of the first sliding protrusion, the second sliding protrusion, the third sliding protrusion and the fourth sliding protrusion are all in a convex shape. A plurality of connecting holes are formed in the auxiliary plate, a first sliding groove and a second sliding groove are formed in the upper surface of the auxiliary plate, the first sliding groove and the second sliding groove are both T-shaped grooves, and automatic clamping devices are arranged inside the first sliding groove and the second sliding groove. The automatic clamping device comprises a left assembly and a right assembly, the left assembly is arranged on the left side wall of the first sliding groove or the second sliding groove, and the right assembly is arranged on the right side wall of the first sliding groove or the second sliding groove.

Description

Self-adaptive differential protection device for power distribution network

Technical Field

The utility model belongs to the technical field of the distribution network, concretely relates to distribution network self-adaptation differential protection device.

Background

The power distribution network is an important public infrastructure for national economy and social development and is responsible for important mission for guaranteeing national economy development and resident life quality. Currently, with the continuous deep penetration of distributed power sources, flexible loads and supply and demand interaction power consumption, the fault characteristics of the power distribution network are significantly changed, and new challenges are brought to the safe and reliable operation of the power distribution network. The differential protection is a device in which a current vector difference between both ends of an input TA (current transformer) starts an operating element when a set operating value is reached, and the protection range is between both ends of an input CT. The working principle of the differential protection is that kirchhoff current law is utilized, the vector difference of current at two ends of a CT is input, when a set action value is reached, the protection range of an action element is started, normal differential current is equal to zero, when equipment has a fault, the current flowing into the protected equipment is not equal to the current flowing out of the protected equipment, the differential current is larger than zero, and when the differential current is larger than the value of a differential protection device, the circuit breakers at all sides of the protected equipment are tripped out through the protection action, so that the fault equipment is powered off. The existing differential protection device is fixedly installed through bolts, all the bolts need to be dismounted when the position of the differential protection device is moved every time, the differential protection device is installed at another position through the bolts, the number of fixing bolts on a box body is large, and time is wasted in dismounting and installing.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough of prior art, and provide a distribution network self-adaptation differential protection device, technical problem that work efficiency is low when having solved the differential protection device that moves.

The purpose of the utility model is realized like this: a self-adaptive differential protection device for a power distribution network comprises a box body and an auxiliary plate, wherein a box door is arranged on one side of the box body, a first sliding protrusion and a second sliding protrusion which correspond to each other are fixedly arranged on the lower bottom surface of the box body, a third sliding protrusion and a fourth sliding protrusion which correspond to each other are fixedly arranged on the rear side wall of the box body, and the cross sections of the first sliding protrusion, the second sliding protrusion, the third sliding protrusion and the fourth sliding protrusion are all in a convex shape; the auxiliary plate is provided with a plurality of connecting holes, the upper surface of the auxiliary plate is provided with a first sliding groove and a second sliding groove, the first sliding groove and the second sliding groove are both T-shaped grooves, and automatic clamping devices are arranged inside the first sliding groove and the second sliding groove.

Further, automatic chucking device includes left subassembly and right subassembly, left side subassembly sets up on the left side wall of first spout or second spout, right side subassembly sets up on the right side wall of first spout or second spout.

Further, left side subassembly includes the swash plate, the upper end of swash plate with the left inside wall of first spout or second spout rotates to be connected, and the swash plate is close to a plurality of springs of fixedly connected with on the side of left inside wall, the other end of spring all with left inside wall fixed connection.

Further, the right side subassembly includes the swash plate, the upper end of swash plate with the right side inner wall of first spout or second spout rotates to be connected, and the swash plate is close to a plurality of springs of fixedly connected with on the side of right side inner wall, the other end of spring all with right side inner wall fixed connection.

Further, the spring comprises a first spring, a second spring and a third spring, the elasticity of the third spring is greater than that of the second spring, and the elasticity of the second spring is greater than that of the first spring.

Furthermore, the number of the connecting holes is four, the connecting holes are respectively arranged at four corners of the auxiliary plate, and the connecting holes penetrate through the auxiliary plate.

Furthermore, a differential element is arranged inside the box body, an electric control device is arranged on the box door, and a display screen is arranged on the box door.

The utility model has the advantages that: the first sliding protrusion, the second sliding protrusion, the third sliding protrusion and the fourth sliding protrusion are arranged on the box body, the first sliding groove and the second sliding groove are arranged on the auxiliary plate, and the automatic clamping device is arranged in the first sliding groove and the second sliding groove. During the use, pass through the bolt fastening with the accessory plate in corresponding position, utilize smooth protruding spout on with the accessory plate on the box to mutually support, automatic chucking device carries out automatic chucking to the box, makes the box fix on the accessory plate, when needing to move the box position, with the box roll-off from the accessory plate. Need not to dismantle the bolt, after the box removed another position, it is fixed with new accessory plate through the bolt to get an accessory plate again, corresponds the cooperation with the spout on the protruding and new accessory plate of cunning of box again, convenient and fast. Through saving the time of dismantling the bolt, improve the efficiency of moving the box.

Drawings

Fig. 1 is a schematic view of the structure of the present invention;

fig. 2 is a rear view structure diagram of the present invention;

FIG. 3 is a schematic front view of the auxiliary plate of the present invention;

fig. 4 is a cross-sectional view taken at a in fig. 3 according to the present invention;

fig. 5 is a schematic view of the left assembly structure of the present invention.

In the figure: 1. the box body 2, the auxiliary plate 3, the box door 4, the first sliding protrusion 5, the second sliding protrusion 6, the third sliding protrusion 7, the fourth sliding protrusion 8, the connecting hole 9, the first sliding groove 10, the second sliding groove 11, the left component 12, the right component 13, the inclined plate 14, the first spring 15, the second spring 16, the third spring 17, the electric control device 18, the display screen 19 and the heat dissipation row holes.

Detailed Description

The utility model is further explained with the accompanying drawings, it should be pointed out that all the upper, lower, all around, equal position words appearing in the utility model, all the position words are not right the utility model discloses do the restriction, just for clearer explanation and explanation the utility model discloses.

Example 1

As shown in fig. 1 to 5, the present embodiment discloses a power distribution network adaptive differential protection device, which includes a box body 1 and an auxiliary plate 2, wherein a box door 3 is disposed on one side of the box body 1, a first sliding protrusion 4 and a second sliding protrusion 5 are fixedly disposed on a lower bottom surface of the box body 1, a third sliding protrusion 6 and a fourth sliding protrusion 7 are fixedly disposed on a rear side wall of the box body 1, and cross sections of the first sliding protrusion 4, the second sliding protrusion 5, the third sliding protrusion 6 and the fourth sliding protrusion 7 are all in a "convex" shape. A plurality of connecting holes 8 are formed in the auxiliary plate 2, a first sliding groove 9 and a second sliding groove 10 are formed in the upper surface of the auxiliary plate 2, the first sliding groove 9 and the second sliding groove 10 are both T-shaped grooves, and automatic clamping devices are arranged inside the first sliding groove 9 and the second sliding groove 10. The automatic clamping device comprises a left component 11 and a right component 12, wherein the left component 11 is arranged on the left side wall of the first sliding chute 9 or the second sliding chute 10, and the right component 12 is arranged on the right side wall of the first sliding chute 9 or the second sliding chute 10.

In the embodiment, the first sliding protrusion 4 and the second sliding protrusion 5 are arranged on the box body 1, the first sliding chute 9 and the second sliding chute 10 are arranged on the auxiliary plate 2, and the automatic clamping device is arranged inside the first sliding chute 9 and the second sliding chute 10. When the automatic clamping device is used, the auxiliary plate 2 is horizontally and transversely fixed at a corresponding position through bolts, the first sliding protrusion 4 and the second sliding protrusion 5 on the box body 1 are matched with the first sliding groove 9 and the second sliding groove 10 on the auxiliary plate 2, the automatic clamping device automatically clamps the box body 1, the box body 1 is fixed on the auxiliary plate 2, and when the position of the box body 1 needs to be moved, the box body 1 slides out of the auxiliary plate 2. Need not to dismantle the bolt, after box 1 removed another position, get an accessory plate 2 again and fix new accessory plate 2 through the bolt, correspond the cooperation with the spout on the protruding and new accessory plate 2 of cunning of box 1 again, convenient and fast. Through saving the time of dismantling the bolt, improve the efficiency of moving box 1.

Example 2

As shown in fig. 1 to 5, the present embodiment discloses a power distribution network adaptive differential protection device, which includes a box body 1 and an auxiliary board 2, wherein one side of the box body 1 is provided with a box door 3, the lower bottom surface of the box body 1 is fixedly provided with a first sliding protrusion 4 and a second sliding protrusion 5 which are corresponding to each other, the rear side wall of the box body 1 is fixedly provided with a third sliding protrusion 6 and a fourth sliding protrusion 7 which are corresponding to each other, and the cross sections of the first sliding protrusion 4, the second sliding protrusion 5, the third sliding protrusion 6 and the fourth sliding protrusion 7 are all in a "convex" shape. A plurality of connecting holes 8 are formed in the auxiliary plate 2, a first sliding groove 9 and a second sliding groove 10 are formed in the upper surface of the auxiliary plate 2, the first sliding groove 9 and the second sliding groove 10 are both T-shaped grooves, and automatic clamping devices are arranged inside the first sliding groove 9 and the second sliding groove 10. The automatic clamping device comprises a left component 11 and a right component 12, wherein the left component 11 is arranged on the left side wall of the first sliding chute 9 or the second sliding chute 10, and the right component 12 is arranged on the right side wall of the first sliding chute 9 or the second sliding chute 10.

For better effect, left subassembly 11 includes swash plate 13, swash plate 13's upper end and the left inside wall of first spout 9 or second spout 10 rotate to be connected, swash plate 13 is close to fixedly connected with first spring 14 on the side of left inside wall, second spring 15 and third spring 16, and the elasticity of third spring 16 is greater than the elasticity of second spring 15, the elasticity of second spring 15 is greater than the elasticity of first spring 14, the other end of spring all with left inside wall fixed connection. The right component 12 comprises an inclined plate 13, the upper end of the inclined plate 13 is rotatably connected with the right inner side wall of the first sliding groove 9 or the second sliding groove 10, the inclined plate 13 is fixedly connected with a first spring 14, a second spring 15 and a third spring 16 on one side surface close to the right inner side wall, the elasticity of the third spring 16 is greater than that of the second spring 15, the elasticity of the second spring 15 is greater than that of the first spring 14, and the other end of the spring is fixedly connected with the right inner side wall. During the use, if accessory plate 2 is by vertical fixed, the protruding 7 of third smooth 6 and fourth smooth is from last to sliding downwards in the inside of first spout 9 and second spout 10, and two smooth protruding in-process that move down, the spring is compressed, and swash plate 13 is close to towards the inside wall of spout, and it is tight more downwards more that smooth protruding is more, until box 1 by the chucking on accessory plate 2. During the dismantlement, with box 1 rebound, the in-process of box 1 rebound, the spring action is more and more littleer along with box 1's rebound at the power on two smooth archs of spring action, and box 1 can be easily taken off. The time for installing and disassembling the box body 1 is saved, and the working efficiency is improved.

For better effect, connecting holes 8 are four, and they are respectively arranged at four corners of auxiliary plate 2, and connecting holes 8 all run through auxiliary plate 2, and auxiliary plate 2 is convenient to fix through the arrangement of connecting holes 8.

For better effect, the box body 1 is internally provided with a differential element, the box door 3 is provided with an electric control device 17, the box door 3 is provided with a display screen 18, and the box door 3 is provided with a heat dissipation row hole 19.

The third sliding protrusion 6 and the fourth sliding protrusion 7 are arranged on the box body 1, the first sliding groove 9 and the second sliding groove 10 are arranged on the auxiliary plate 2, and the automatic clamping device is arranged inside the first sliding groove 9 and the second sliding groove 10. During the use, pass through the perpendicular vertical fixing in corresponding position of bolt with accessory plate 2, utilize third on box 1 smooth protruding 6 and fourth smooth protruding 7 and first spout 9 and second spout 10 on accessory plate 2 to mutually support, automatic chucking device carries out automatic chucking to box 1, makes box 1 fix on accessory plate 2, when needing to move box 1 position, with box 1 from accessory plate 2 roll-off. Need not to dismantle the bolt, after box 1 removed another position, get an accessory plate 2 again and fix new accessory plate 2 through the bolt, correspond the cooperation with the spout on the protruding and new accessory plate 2 of cunning of box 1 again, convenient and fast. Through saving the time of dismantling the bolt, improve the efficiency of moving box 1.

Claims

1. The utility model provides a distribution network self-adaptation differential protection device, includes box (1) and accessory plate (2), one side of box (1) is equipped with chamber door (3), its characterized in that: a first sliding protrusion (4) and a second sliding protrusion (5) which correspond to each other are fixedly arranged on the lower bottom surface of the box body (1), a third sliding protrusion (6) and a fourth sliding protrusion (7) which correspond to each other are fixedly arranged on the rear side wall of the box body (1), and the sections of the first sliding protrusion (4), the second sliding protrusion (5), the third sliding protrusion (6) and the fourth sliding protrusion (7) are all in a convex shape; a plurality of connecting holes (8) are formed in the auxiliary plate (2), a first sliding groove (9) and a second sliding groove (10) are formed in the upper surface of the auxiliary plate (2), the first sliding groove (9) and the second sliding groove (10) are both T-shaped grooves, and automatic clamping devices are arranged inside the first sliding groove (9) and the second sliding groove (10).

2. The adaptive differential protection device for a power distribution network of claim 1, wherein: the automatic clamping device comprises a left component (11) and a right component (12), the left component (11) is arranged on the left side wall of the first sliding groove (9) or the second sliding groove (10), and the right component (12) is arranged on the right side wall of the first sliding groove (9) or the second sliding groove (10).

3. The adaptive differential protection device for a power distribution network of claim 2, wherein: left side subassembly (11) include swash plate (13), the upper end of swash plate (13) with the left inside wall of first spout (9) or second spout (10) rotates to be connected, and a plurality of springs of fixedly connected with on the side of swash plate (13) near left inside wall, the other end of spring all with left inside wall fixed connection.

4. The adaptive differential protection device for a power distribution network according to claim 2, wherein: right side subassembly (12) include swash plate (13), the upper end of swash plate (13) with the right side inner wall of first spout (9) or second spout (10) rotates to be connected, and a plurality of springs of fixedly connected with on swash plate (13) the side that is close to right side inner wall, the other end of spring all with right side inner wall fixed connection.

5. The adaptive differential protection device for a power distribution network according to claim 3, wherein: the spring comprises a first spring (14), a second spring (15) and a third spring (16), the elasticity of the third spring (16) is larger than that of the second spring (15), and the elasticity of the second spring (15) is larger than that of the first spring (14).

6. The adaptive differential protection device for a power distribution network according to claim 1, wherein: the number of the connecting holes (8) is four, the connecting holes are respectively arranged at four corners of the auxiliary plate (2), and the connecting holes (8) penetrate through the auxiliary plate (2).

7. The adaptive differential protection device for a power distribution network of claim 1, wherein: the box is characterized in that a differential element is arranged in the box body (1), an electric control device (17) is arranged on the box door (3), and a display screen (18) is arranged on the box door (3).