CN217607044U

CN217607044U - Cable overvoltage and grounding protection structure based on wind power generation

Info

Publication number: CN217607044U
Application number: CN202221905665.3U
Authority: CN
Inventors: 刘先海; 孙鹤; 杨明; 赵煜; 徐岩; 刘光海
Original assignee: Daanji Electric Green Hydrogen Energy Co ltd
Current assignee: Daanji Electric Green Hydrogen Energy Co ltd
Priority date: 2022-07-22
Filing date: 2022-07-22
Publication date: 2022-10-18
Anticipated expiration: 2032-07-22

Abstract

The utility model discloses a cable overvoltage and ground protection structure based on wind power generation, including king-post, connection seat, lightning rod, reinforcement cover, activity ear, pull the rope, adjust and hang the piece, adjust and press from both sides, connecting rod, electrode, cross interconnection case, sheath protector, grounding piece and strengthening rib. The beneficial effects of the utility model are that: when cable run is normal operating condition, high tension cable sheath protector presents the high resistance state, cut the power frequency induced-current return circuit in the cable metal sheath, and sheath protector is equipped with the polylinker and does not receive the restriction of cable line length, the device's suitability has been improved greatly, and the dismouting is convenient, be convenient for adjust suitable artifical ground net, and be convenient for maintain and change the part, and when earth fault appears in cable run, when thunder and lightning overvoltage or inside overvoltage lead to appearing very high overvoltage, sheath protector demonstrates low resistance on-state, make the fault current pass through sheath protector and leak into the ground rapidly through the grounding piece.

Description

Cable overvoltage and grounding protection structure based on wind power generation

Technical Field

The utility model relates to a protection architecture specifically is a cable overvoltage and ground protection structure based on wind power generation belongs to new forms of energy equipment technical field.

Background

With the development of modern industrial technology, new energy is more and more emphasized, wherein wind power generation is an important technology, wind power generation is to convert the kinetic energy of wind into electric energy, wind power is a clean and pollution-free renewable energy and is utilized by people for a long time, water pumping, surface grinding and the like are mainly performed through windmills, people are interested in how to utilize wind to generate electricity, the wind power generation is developed at present, and the overvoltage and grounding protection of cables need to be emphasized in the process of wind power generation.

Although the existing overvoltage and grounding protection structure is widely used, most of the existing overvoltage and grounding protection structure has some problems in practical use:

1) The induction voltage amplitude of each large section of the existing cable is different, so that the cable is unstable in work, and the existing grounding protection device is limited by the length of a cable line and cannot effectively limit the power frequency induction voltage in a metal sheath of the cable line;

2) Most of the existing cable grounding protection devices are fixed, the formed artificial grounding grid cannot be adjusted, the applicability is poor, and when one end grounding grid assembly fails, the maintenance is difficult and the efficiency is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a cable overvoltage and ground protection structure based on wind power generation just for solving above-mentioned at least one technical problem.

The utility model discloses a following technical scheme realizes above-mentioned purpose: a cable overvoltage and grounding protection structure based on wind power generation comprises:

the supporting mechanism comprises a tower column and a connecting seat, the bottom end of the tower column is fixedly connected with the ground, the connecting seat is fixed at the top end of the tower column, and the top end of the connecting seat is fixedly connected with a lightning rod;

ground protection mechanism, it presss from both sides, connecting rod, electrode, cross interconnection case, sheath protector and grounding lug including adjusting, the grounding lug is connected with the wire that cross interconnection case extends, the sheath protector sets up cross interconnection case again and is connected with cable run, it presss from both sides swing joint in the both sides of grounding lug to adjust, just the connecting rod is connected with the regulation clamp is fixed, the grounding lug sets up and connects formation ground net through the connecting rod in the grounding lug of column bottom and every column bottom, electrode and grounding lug fixed connection bury in the underground.

As the utility model discloses further scheme again: the top of the outer side of the tower column is fixedly connected with a reinforcing sleeve, a plurality of movable lugs are uniformly fixed on the outer side of the reinforcing sleeve, a plurality of movable adjusting hanging blocks are fixedly connected to a fixing surface where the bottom end is located, and a traction rope is connected between the movable lugs and the adjusting hanging blocks.

As a further aspect of the present invention: and threaded rods are rotatably connected to two ends of the adjusting hanging block, one threaded rod is connected with the traction rope, and the other threaded rod is rotatably hinged to the ground.

As the utility model discloses further scheme again: and an equipotential connector is arranged in the connecting seat and is connected with the grounding piece through a PE wire.

As a further aspect of the present invention: the adjusting clamp is of a U-shaped structure and is fixedly connected with the grounding piece through a bolt.

As a further aspect of the present invention: the outer bottom of the tower column is evenly and fixedly connected with a plurality of reinforcing ribs.

The beneficial effects of the utility model are that:

1) When the cable line is in a normal working state, the high-voltage cable protection layer protector is in a high resistance state, a power frequency induced current loop in a cable metal protection layer is cut off, and the protection layer protector is provided with a plurality of joints which are not limited by the length of the cable line, so that the applicability of the device is greatly improved;

2) The utility model discloses the structure is retrencied, and the dismouting is convenient, is convenient for adjust suitable artifical ground net, and is convenient for maintain and change the part, and when ground fault, thunder and lightning overvoltage or inside overvoltage appear in the cable run and lead to appearing very high overvoltage, the sheath protector demonstrates low resistance on-state for the trouble current passes through the earth through the sheath protector and purges rapidly, ensures wind power generation's safe handling.

Drawings

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

FIG. 2 is a schematic front view of the present invention;

FIG. 3 is a schematic view of the inside of the cross-connect box of the present invention;

fig. 4 is an enlarged schematic view of a portion a in fig. 1.

In the figure: 1. the tower comprises a tower column, 2 parts of a connecting seat, 3 parts of a lightning rod, 4 parts of a reinforcing sleeve, 5 parts of a movable lug, 6 parts of a traction rope, 7 parts of an adjusting hanging block, 8 parts of an adjusting clamp, 9 parts of a connecting rod, 10 parts of an electrode, 11 parts of a cross interconnection box, 12 parts of a protective layer protector, 13 parts of a grounding sheet, 14 parts of a reinforcing rib.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Example one

As shown in fig. 1 to 4, a cable overvoltage and ground protection structure based on wind power generation includes:

the supporting mechanism comprises a tower column 1 and a connecting seat 2, the bottom end of the tower column 1 is fixedly connected with the ground, the connecting seat 2 is fixed at the top end of the tower column 1, and the top end of the connecting seat is fixedly connected with a lightning rod 3;

ground protection mechanism, it presss from both sides 8 including adjusting, connecting rod 9, electrode 10, cross interconnection case 11, sheath protector 12 and grounding piece 13, grounding piece 13 is connected with the wire that cross interconnection case 11 extends, sheath protector 12 sets up cross interconnection case 11 again and is connected with cable run, it presss from both sides 8 swing joint in the both sides of grounding piece 13 to adjust, and connecting rod 9 presss from both sides 8 fixed connection with the regulation, grounding piece 13 sets up and connects through connecting rod 9 in the grounding piece 13 of 1 bottom of column and 1 bottom of every column and forms the ground net, electrode 10 and grounding piece 13 fixed connection bury in the underground.

The embodiment of the utility model provides an in, the outside top fixedly connected with of pylon 1 reinforces cover 4, and it evenly is fixed with a plurality of activity ears 5 to reinforce the cover 4 outside, the regulation of a plurality of activities of bottom place fixed surface fixedly connected with hangs piece 7, activity ear 5 hangs and is connected with traction rope 6 between the piece 7 with the regulation, the equal swivelling joint in both ends of piece 7 is hung in the regulation has the threaded rod, one of them is connected with traction rope 6, another rotates with ground and articulates, hang the piece 7 with the regulation through traction rope 6 cooperation activity ear 5, consolidate pylon 1, make it remain stable, and then guarantee that its bottom side is stable with inside spare part, and activity ear 5 hangs the piece 7 all movable with the regulation, make traction rope 6's elasticity adjustable.

The embodiment of the utility model provides an in, a plurality of strengthening ribs 14 of the even fixedly connected with in outer bottom of pylon 1 strengthen the joint strength of pylon 1 bottom through strengthening rib 14 to guarantee that it remains stable in strong wind.

Example two

ground protection mechanism, it presss from both sides 8 including adjusting, connecting rod 9, electrode 10, cross interconnection case 11, sheath protector 12 and grounding piece 13, grounding piece 13 is connected with the wire that cross interconnection case 11 extends, sheath protector 12 sets up cross interconnection case 11 again and is connected with cable run, it presss from both sides 8 swing joint in the both sides of grounding piece 13 to adjust, and connecting rod 9 presss from both sides 8 fixed connection with the regulation, grounding piece 13 sets up and connects formation ground net through connecting rod 9 in the grounding piece 13 of 1 bottom of column 1 bottom and every column 1 bottom, electrode 10 and grounding piece 13 fixed connection bury in the underground.

The embodiment of the utility model provides an in, the inside of joint chair 2 is provided with the equipotential connector and is connected with grounding plate 13 through the PE line, it is the U-shaped structure to adjust the clamp 8, and through bolt and 13 fixed connection of grounding plate, realize the equipotential connection through the insulating part of each independent looks in the equipotential connector will joint chair 2, prevent effectively that the earth potential from counterattacking damages equipment and playing protection equipment safety role, and press from both sides 8 freedom determination position and be connected formation ground net with other connecting rods 9 through adjusting, the security improves.

The working principle is as follows: when the device is used, firstly, each grounding sheet 13 is laid into a grounding net, the connection between the grounding sheets 13 is carried out through the connecting rod 9, when the cable circuit is in a normal working state, the sheath protector 12 in the cross interconnection box 11 is in a high resistance state, a power frequency induced current loop in a metal sheath of the cable is cut off, when the cable circuit has a ground fault, and a lightning overvoltage or an internal overvoltage causes a very high overvoltage in the metal sheath of the cable, the sheath protector 12 is in a low resistance conduction state, so that the fault current is rapidly discharged into the ground through the sheath protector 12, the sheath protector 12 enables the induced voltage amplitude on each large section of cable to be equal to ensure the safe work of the cable, and through the two cross interconnection boxes 11, the two-time interchange is realized, the vector is zero after the induced voltage is superposed, and the effect of limiting the induced voltage is achieved.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a cable overvoltage and ground protection structure based on wind power generation which characterized in that includes:

the supporting mechanism comprises a tower column (1) and a connecting seat (2), the bottom end of the tower column (1) is fixedly connected with the ground, the connecting seat (2) is fixed at the top end of the tower column (1), and the top end of the connecting seat is fixedly connected with a lightning rod (3);

ground protection mechanism, it presss from both sides (8), connecting rod (9), electrode (10), cross interconnection case (11), sheath protector (12) and grounding piece (13) including adjusting, the wire that grounding piece (13) and cross interconnection case (11) extend is connected, sheath protector (12) set up cross interconnection case (11) again and are connected with cable run, adjust the both sides of pressing from both sides (8) swing joint at grounding piece (13), just connecting rod (9) press from both sides (8) fixed connection with the regulation, grounding piece (13) set up in grounding piece (13) of column (1) bottom and every column (1) bottom and connect through connecting rod (9) and form the ground net, electrode (10) and grounding piece (13) fixed connection bury in the underground.

2. The overvoltage and grounding protection structure for cables based on wind power generation as claimed in claim 1, wherein: the tower column is characterized in that a reinforcing sleeve (4) is fixedly connected to the top of the outer side of the tower column (1), a plurality of movable lugs (5) are uniformly fixed to the outer side of the reinforcing sleeve (4), a plurality of movable adjusting hanging blocks (7) are fixedly connected to the fixing surface where the bottom end is located, and a traction rope (6) is connected between the movable lugs (5) and the adjusting hanging blocks (7).

3. The cable overvoltage and ground protection structure based on wind power generation as claimed in claim 2, wherein: and threaded rods are rotatably connected to two ends of the adjusting hanging block (7), one threaded rod is connected with the traction rope (6), and the other threaded rod is rotatably hinged to the ground.

4. The cable overvoltage and ground protection structure based on wind power generation as claimed in claim 1, wherein: and an equipotential connector is arranged in the connecting seat (2) and is connected with the grounding sheet (13) through a PE wire.

5. The overvoltage and grounding protection structure for cables based on wind power generation as claimed in claim 1, wherein: the adjusting clamp (8) is of a U-shaped structure and is fixedly connected with the grounding plate (13) through a bolt.

6. The cable overvoltage and ground protection structure based on wind power generation as claimed in claim 1, wherein: the outer bottom of the tower column (1) is uniformly and fixedly connected with a plurality of reinforcing ribs (14).