CN215419058U

CN215419058U - Novel high-voltage switch equipment of internal distribution dynamic propulsion circuit breaker

Info

Publication number: CN215419058U
Application number: CN202121438186.0U
Authority: CN
Inventors: 王焱波; 王彬翰; 成鹏志; 崔宇; 吕鹏
Original assignee: Xidian Baoji Electric Co ltd; China XD Electric Co Ltd
Current assignee: Xidian Baoji Electric Co ltd; China XD Electric Co Ltd
Priority date: 2021-06-25
Filing date: 2021-06-25
Publication date: 2022-01-04
Anticipated expiration: 2031-06-25

Abstract

The utility model discloses novel high-voltage switch equipment of an internal distribution power-driven push circuit breaker. This novel high tension switchgear includes the cabinet body and sets up in the internal electric propulsion circuit breaker of cabinet, go up contact box, lower contact box, branch generating line, bus sleeve, main bus, earthing switch, current transformer, arrester and zero sequence current transformer, the electric propulsion circuit breaker can impel through the electric mode. The intelligent high-voltage switch cabinet provided by the utility model can realize the electric operation of the electric propulsion circuit breaker, realize the intelligent unattended operation of a power station and meet the market demand.

Description

Novel high-voltage switch equipment of internal distribution dynamic propulsion circuit breaker

Technical Field

The utility model relates to the technical field of high-voltage electric appliances, in particular to novel high-voltage switch equipment of an internal distribution power-driven push circuit breaker.

Background

Starting in 2019, the national power grid requires the circuit breaker handcart of the switch cabinet to be pushed to be capable of being electrically operated when bidding, so that intelligent unattended operation of a power station is realized. At present, the circuit breaker of cubical switchboard on the market generally advances through manual mode, leads to the intelligent unmanned on duty in unable realization power station, can't satisfy the market demand.

Therefore, how to design a switch cabinet capable of meeting the market demand is a technical problem which needs to be solved by the technical personnel in the field at present.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention is directed to a novel high voltage switchgear for an internal distribution power boost circuit breaker to meet market requirements.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a novel high tension switchgear of interior distribution dynamic propulsion circuit breaker, include the cabinet body with set up in the internal electronic propulsion circuit breaker of cabinet, go up contact box, lower contact box, branch generating line, bus sleeve, main bus, earthing switch, current transformer, arrester and zero sequence current transformer, electronic propulsion circuit breaker can impel through the electric mode.

Preferably, in the novel high-voltage switchgear, the electrically-propelled circuit breaker includes two propulsion modes, namely an electrically-propelled mode and a manually-propelled mode, and the electrical blocking device of the novel high-voltage switchgear enables the electrically-propelled circuit breaker to be preferentially selected from the manually-propelled mode.

Preferably, in the above new high voltage switchgear, the electrically propelled circuit breaker is a withdrawable vacuum circuit breaker.

Preferably, in the novel high-voltage switchgear, the electrically-propelled disconnector is a VXB-40.5P series centered electrically-propelled disconnector.

Preferably, in the novel high-voltage switch gear, the novel high-voltage switch gear is a 40.5kV high-voltage switch gear cabinet, and the 40.5kV high-voltage switch gear cabinet has a complete five-prevention locking function.

Preferably, in above-mentioned novel high tension switchgear, still include the valve mechanism, the valve mechanism includes first dodge gate and the second dodge gate that top-down set gradually, first dodge gate with the second dodge gate all adopt four-bar linkage to install in the cabinet body.

Preferably, in the novel high-voltage switch device, the cabinet body adopts a metal closed armored shell, and the shell protection grade of the cabinet body is IP 4X.

Preferably, in the above-mentioned novel high-voltage switchgear, one side top-down of the inside of the cabinet body is separated into an instrument room and a circuit breaker room, the other side top-down of the inside of the cabinet body is separated into a bus chamber and a cable chamber, the electric propulsion circuit breaker is installed in the circuit breaker room, the upper contact box, the main bus, the branch bus and the bus bushing are installed in the bus chamber, the lower contact box, the earthing switch, the current transformer, the arrester and the zero sequence current transformer are installed in the cable chamber.

Preferably, in the above-described novel high-voltage switchgear, a protection class between the instrument room, the breaker room, the bus bar room, and the cable room is IP 2X.

Preferably, in the above new high voltage switchgear, the arrester is a zinc oxide arrester.

Preferably, in the above novel high-voltage switchgear, the high-voltage switchgear further includes a static contact matched with the electric propulsion circuit breaker, the static contact adopts a three-length and three-short structural form, and the static contact adopts an inverted triangle installation mode.

Preferably, in above-mentioned novel high tension switchgear, still include the circuit breaker handcart, the both sides of circuit breaker handcart are provided with guide roller, the both sides of the cabinet body be provided with guide roller complex guide way.

When the novel high-voltage switch equipment of the internal distribution dynamic propelling circuit breaker is used, the electric propelling circuit breaker, the upper contact box, the lower contact box, the branch bus, the bus sleeve, the main bus, the grounding switch, the current transformer, the lightning arrester and the zero sequence current transformer in the cabinet body form a high-voltage distribution system, and the high-voltage distribution system plays roles of switching on, switching off, controlling, protecting and the like on a power system; during the outage, electronic propulsion circuit breaker can follow the operating position and electronic the returning to test position, accomplishes the outage, easy access. Therefore, the novel high-voltage switch equipment of the internal distribution electric propulsion circuit breaker can realize the electric operation of the electric propulsion circuit breaker, realize the intelligent unattended operation of a power station and meet the market demand.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic diagram of an internal structure of a novel high-voltage switchgear with an internal distribution electrically-propelled circuit breaker according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a system for a novel high voltage switchgear with an internal distribution electrically propelled circuit breaker according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a static contact according to an embodiment of the present invention.

The intelligent cabinet comprises a cabinet body 100, an electric propulsion circuit breaker 101, a fixed contact 1011, an upper contact box 102, a lower contact box 103, a branch bus 104, a bus sleeve 105, a grounding switch 106, a current transformer 107, a lightning arrester 108, a zero sequence current transformer 109, a valve mechanism 1010, a first movable door 1011, a second movable door 1012, an instrument room 100-a, a circuit breaker room 100-b, a bus room 100-c and a cable room 100-d.

Detailed Description

In view of the above, the core of the present invention is to provide a novel high voltage switchgear for an internal distribution power-driven circuit breaker to meet the market demand.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 2, the embodiment of the utility model discloses a novel high-voltage switch device of an internal distribution power-driven circuit breaker, which comprises a cabinet 100, and a power-driven circuit breaker 101, an upper contact box 102, a lower contact box 103, a branch bus 104, a bus bushing 105, a main bus, a grounding switch 106, a current transformer 107, a lightning arrester 108 and a zero-sequence current transformer 109 which are arranged in the cabinet 100, wherein the power-driven circuit breaker 101 can be driven in a power-driven manner.

When the novel high-voltage switch equipment of the internal distribution power-driven circuit breaker is used, the power-driven circuit breaker 101, the upper contact box 102, the lower contact box 103, the branch bus 104, the bus sleeve 105, the main bus, the grounding switch 106, the current transformer 107, the lightning arrester 108 and the zero-sequence current transformer 109 in the cabinet body 100 form a high-voltage power distribution system, and the high-voltage power distribution system plays roles of switching on, switching off, controlling, protecting and the like for a power system; during the outage, electronic propulsion circuit breaker 101 can follow the operating position and electronic the returning to test position, accomplishes the outage, easy access. Therefore, the novel high-voltage switch equipment of the internal distribution electric propulsion circuit breaker can realize the electric operation of the electric propulsion circuit breaker 101, realize the intelligent unattended operation of a power station and meet the market demand.

It should be noted that the lightning arrester 108 may be a magnetic blow arrester, a zinc oxide arrester, or a valve type lightning arrester, and any type of lightning arrester that can meet the use requirement is within the protection scope of the present invention; preferably, the embodiment of the utility model adopts the zinc oxide lightning arrester, and has the advantages of no gap, no follow current voltage, capability of limiting internal overvoltage and the like.

In addition, the electric propulsion breaker 101 may only include an electric propulsion mode, or may include both an electric propulsion mode and a manual propulsion mode, as long as the usage requirements of the intelligent switch cabinet can be met; preferably, the electric propulsion circuit breaker provided by the embodiment of the present invention includes two propulsion modes, namely an electric propulsion mode and a manual propulsion mode, respectively, that is, both the electric propulsion mode and the manual propulsion mode are included, and the electric blocking device of the novel high voltage switchgear can make the electric propulsion circuit breaker 101 preferentially select the manual propulsion mode, so as to improve the safety of the novel switchgear.

Specifically, as shown in fig. 1, the electric propulsion vacuum circuit breaker 101 is a VXB-40.5P series centered electric propulsion vacuum circuit breaker developed by my company, and has high mechanical stability.

Furthermore, the novel high-voltage switch equipment of the internal distribution electric propulsion circuit breaker is a 40.5kV high-voltage switch cabinet, and the 40.5kV high-voltage switch cabinet has a complete five-prevention locking function, namely when the grounding switch 106 is closed, the electric propulsion circuit breaker 101 cannot be electrically pushed to a working position from a sample position; when the electric propulsion breaker 101 is electrically pushed into the working position, the grounding switch 106 cannot be closed; when the grounding switch 106 is closed, the electric propulsion breaker 101 cannot be electrically propelled to the working position; when the rear door of the cabinet 100 is opened, the grounding switch 106 cannot be operated; when the circuit breaker 101 is electrically pushed, the secondary plug of the novel high-voltage switch equipment of the internal distribution electrically-pushed circuit breaker is reliably locked; so as to realize this novel high tension switchgear's mistake shutting of preventing, improve power production's security.

The five-prevention locking function can be realized by a mechanical locking mode, a program lock mode, an electrical interlocking mode or an electromagnetic lock mode, and the mode of realizing the misoperation-preventive locking of the novel high-voltage switch equipment is within the protection scope of the utility model as long as the five-prevention locking function can be realized.

As shown in fig. 1, the novel high voltage switch device of the internal distribution power-driven circuit breaker further includes a shutter mechanism 1010, the shutter mechanism 1010 includes a first movable door 1011 and a second movable door 1012 which are sequentially arranged from top to bottom, so as to shield the upper contact box 102 through the first movable door 1011, and shield the lower contact box 103 through the second movable door 1012, and the first movable door 1011 and the second movable door 1012 are both installed in the cabinet body 100 by adopting a four-bar linkage mechanism, so as to drive the opening and closing of the first movable door 1011 and the second movable door 1012 through the four-bar linkage mechanism.

In addition, the novel high-voltage switch equipment of the internal distribution dynamic propelling circuit breaker also comprises a static contact matched with the dynamic propelling circuit breaker 101, and the static contact adopts a three-length and three-short structural form so as to reduce the meshing deviation between the static contact and the dynamic contact of the novel high-voltage switch equipment; and the static contact adopts the inverted triangle mounting mode to improve the homogeneity of propulsive force, reduce the slope of circuit breaker handcart.

And, this novel high tension switchgear still includes the circuit breaker handcart, and the both sides of circuit breaker handcart are provided with guide roller, and the both sides of cubical switchboard are provided with the guide way with guide roller complex to in the cooperation through guide roller and guide way realize the steady propulsion of circuit breaker handcart.

The cabinet body 100 of the novel high-voltage switch equipment of the internal distribution power-driven push circuit breaker adopts a metal-enclosed armored shell, the cabinet body 100 adopts a high-quality aluminum-zinc coated steel plate and adopts a bending assembly type structure, and the plate is processed by numerical control equipment to ensure the material precision, so that the precision of the cabinet body 100 is improved.

In addition, the utility model does not specifically limit the protection level of the outer shell of the cabinet 100, and all the protection levels of the outer shell which can meet the use requirements belong to the protection scope of the utility model; preferably, the cabinet 100 provided by the embodiment of the utility model has an outer shell protection grade of IP 4X.

The utility model does not specifically limit the overall dimensions of the cabinet 100, such as width, depth, height and the like, and in practical application, the overall dimensions of the cabinet 100 can be adaptively adjusted according to actual requirements; preferably, the cabinet 100 provided by the embodiment of the utility model has external dimensions of 1400mm × 2750mm × 2600mm (width × depth × height).

Further, one side of the inside of the cabinet 100 is divided into an instrument room 100-a and a breaker room 100-b from top to bottom, the other side of the inside of the cabinet 100 is divided into a bus room 100-c and a cable room 100-d from top to bottom, the electric propulsion breaker 101 is installed in the breaker room 100-b, the upper contact box 102, the main bus, the branch bus 104 and the bus bushing 105 are installed in the bus room 100-c, and the lower contact box 103, the grounding switch 106, the current transformer 107, the lightning arrester 108 and the zero sequence current transformer 109 are installed in the cable room 100-d.

Furthermore, the protection levels among the instrument room 100-a, the breaker room 100-b, the bus room 100-c and the cable room 100-d are not particularly limited, and the protection levels meeting the use requirements are within the protection scope of the utility model; preferably, the protection level among the instrument room 100-a, the breaker room 100-b, the bus bar room 100-c and the cable room 100-d provided by the embodiment of the present invention is IP 2X.

When the novel high-voltage switch equipment is used, the power transmission operation sequence is as follows:

closing the rear door of the cabinet 100 → the grounding switch 106 → the electric propulsion breaker 101 opening and pushing test position → closing the front door of the cabinet 100 → electric propulsion breaker 101 to the working position → closing the electric propulsion breaker 101 → completing power transmission.

The power failure maintenance operation sequence is as follows:

power-off power-driven push-on circuit breaker 101 → power-driven push-on circuit breaker 101 retreats from the working position → earthing switch 106 is engaged → rear door of cabinet 100 is opened → front door of cabinet 100 is opened → power failure is completed, and maintenance is carried out.

The terms "first" and "second," and the like in the description and claims of the present invention and the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not set forth for a listed step or element but may include steps or elements not listed.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The novel high-voltage switch equipment of the internal distribution dynamic propulsion circuit breaker is characterized by comprising a cabinet body, and an electric propulsion circuit breaker, an upper contact box, a lower contact box, a branch bus, a bus sleeve, a main bus, a grounding switch, a current transformer, a lightning arrester and a zero sequence current transformer which are arranged in the cabinet body, wherein the electric propulsion circuit breaker, the upper contact box, the lower contact box, the branch bus, the bus sleeve, the main bus, the grounding switch, the current transformer, the lightning arrester and the zero sequence current transformer form a high-voltage distribution system, so that the high-voltage distribution system has the functions of switching on and off, controlling and protecting an electric system, and the electric propulsion circuit breaker can be propelled and returned in an electric mode;

the intelligent cabinet is characterized in that one side of the inside of the cabinet body is divided into an instrument room and a circuit breaker room from top to bottom, the other side of the inside of the cabinet body is divided into a bus room and a cable room from top to bottom, the electric propulsion circuit breaker is installed in the circuit breaker room, the upper contact box, the main bus, the branch bus and the bus sleeve are installed in the bus room, and the lower contact box, the grounding switch, the current transformer, the lightning arrester and the zero sequence current transformer are installed in the cable room.

2. The novel high voltage switchgear according to claim 1, characterized in that said electrically propelled circuit breaker comprises two propulsion modes, respectively an electrically propelled mode and a manually propelled mode.

3. The new high voltage switchgear according to claim 1, characterized in that said electrically propelled circuit breaker is a withdrawable vacuum circuit breaker.

4. The new high voltage switchgear according to claim 1, characterized in that said electrically propelled circuit breaker is a VXB-40.5P series centered electrically propelled vacuum circuit breaker.

5. The new high voltage switchgear according to claim 1, characterized in that the new high voltage switchgear is a 40.5kV high voltage switchgear and the 40.5kV high voltage switchgear has a full five protection blocking function.

6. The novel high-voltage switch equipment as claimed in claim 1, further comprising a shutter mechanism, wherein the shutter mechanism comprises a first movable door and a second movable door which are sequentially arranged from top to bottom, and the first movable door and the second movable door are both mounted on the cabinet body by adopting a four-bar linkage mechanism.

7. The new high voltage switchgear according to claim 1, characterized in that said cabinet is a metal enclosed armored enclosure and the enclosure protection class of said cabinet is IP 4X.

8. The new high voltage switchgear according to claim 1, characterized in that the protection class between the instrument room, the circuit breaker room, the bus bar room and the cable room is IP 2X.

9. The new high-voltage switchgear according to claim 1, characterized in that said arrester is a zinc oxide arrester.

10. The novel high-voltage switch equipment as claimed in claim 1, further comprising a static contact matched with the electric propulsion breaker, wherein the static contact is in a three-length and three-short structure form, and the static contact is in an inverted triangle installation mode.

11. The novel high-voltage switch equipment as claimed in claim 1, further comprising a circuit breaker handcart, wherein guide rollers are arranged on two sides of the circuit breaker handcart, and guide grooves matched with the guide rollers are arranged on two sides of the cabinet body.