CN112499383A

CN112499383A - Portable intelligent substation protection through-flow secondary test drum

Info

Publication number: CN112499383A
Application number: CN202011403174.4A
Authority: CN
Inventors: 常琬君; 王辉; 郭松; 胡喆; 喻洋; 王婷; 郭少雄; 常非; 师琛
Original assignee: State Grid Corp of China; Xi'an Power Supply Co of State Grid Shaanxi Electric Power Co Ltd
Current assignee: State Grid Corp of China; Xi'an Power Supply Co of State Grid Shaanxi Electric Power Co Ltd
Priority date: 2020-12-04
Filing date: 2020-12-04
Publication date: 2021-03-16

Abstract

The invention discloses a portable intelligent substation protection through-flow secondary test wire coil which comprises a telescopic pull rod vehicle, a wire coil wheel support and a wire coil wheel, wherein the wire coil wheel support is fixed on the telescopic pull rod vehicle, the wire coil wheel is arranged on the wire coil wheel support, a wiring hole and a wire coil wheel crank are arranged on the end face of the wire coil wheel, the end part of a parallel sheath wire is wound on the wire coil wheel and then connected with the wiring hole, the test wire coil can guarantee the safety of operation, and meanwhile, the cost is low.

Description

Portable intelligent substation protection through-flow secondary test drum

Technical Field

The invention relates to a test wire coil, in particular to a portable intelligent substation protection through-flow secondary test wire coil.

Background

Electric energy is an important energy source for supporting the development of the modern society, and the intelligent management of power supply is the key point of the development of power supply in the present day and even a period of time in the future. Development and application of intelligent substations are well done, and improving the intelligent level of national power grids is an important way for improving the intelligence of power supply. In order to guarantee the construction quality of the intelligent substation and ensure the use effect of the intelligent substation, the acceptance effect of the intelligent substation is enhanced. With the wide application of the comprehensive automation of the transformer substation, the acceptance workload of the secondary system is more and more important. The team worker actively improves the technical problems in the process of secondary acceptance work and daily maintenance work through the summary practice of on-site acceptance work experience and the comprehensive reference of the opinions of professionals such as relay protection, automation, operation and maintenance and the like, develops 'four-small' technical attack, and proposes suggestions and improves the acceptance process and method from the angles of ensuring production safety, improving work efficiency and ensuring technical reliability. The 'four-small' project is the improvement of technical tools which are developed by protection personnel according to field requirements in the secondary acceptance and protection regular inspection process of the intelligent substation.

In the secondary acceptance work of the intelligent substation, taking the intelligent substation of 110kV as an example, the test voltage and current parameters need to be converted into digital quantities transmitted by optical fibers through the merging unit device, so that when the tests such as the protection current balance of the main transformer are carried out, analog quantities need to be simultaneously added to the merging unit at the high-voltage side and the merging unit at the low-voltage side of the main transformer respectively, at the moment, a group of secondary lines need to be led from a 10kV high-voltage chamber to the device in the high-voltage chamber of 110kV, the distance is far away, sometimes even not at the same floor, and the distance is nearly 50-100 m.

The common secondary line is often short and cannot meet the test requirement. At present, a through-flow experiment is generally completed by using a mode of serially connecting secondary test wires, so that great potential safety hazards exist, sometimes, metal connectors are exposed, wires of different phases are wound together in the test process, and short circuits are possibly caused by contact of different phases. In addition, different phase test lines are scattered on the site, so that the field work is not orderly, and personnel on the work site can tread to cause electric shock.

In addition, because the device is far away, the required secondary test through-flow line is long, and the retraction work of each group of test lines before and after the operation is finished also becomes very important work. Wiring, receipts line, removal cable and equipment are reciprocal many times around every operation, can not avoid taking place to pull many times, and is time-consuming, hard, and the efficiency of construction is low, have certain potential safety hazard, and in addition because of incorrect receiving and releasing of cable, and then cause and deposit improperly, reduce material life, increase use cost.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a portable through-current secondary test wire coil for an intelligent substation, wherein the test wire coil can ensure the safety of operation and is low in cost.

In order to achieve the purpose, the portable intelligent substation protection through-flow secondary test wire coil comprises a telescopic pull rod vehicle, a wire coil wheel support and a wire coil wheel, wherein the wire coil wheel support is fixed on the telescopic pull rod vehicle, the wire coil wheel is arranged on the wire coil wheel support, a wiring hole and a wire coil wheel crank are arranged on the end face of the wire coil wheel, and the end part of a parallel sheath wire is wound on the wire coil wheel and then connected with the wiring hole.

The parallel sheath wires are 4-core parallel sheath wires, and the number of the wiring holes is four.

The telescopic pull rod trolley comprises a base and a telescopic pull rod, wherein a plurality of wheels are arranged at the bottom of the base, the telescopic pull rod is fixed on the base, and a wire coil wheel support is fixed on the base.

The wire coil wheel bracket is fixedly provided with a wire coil wheel rotating shaft through a rotating shaft bolt, wherein the wire coil wheel is sleeved on the wire coil wheel rotating shaft.

The plate wheel rotates and includes central sleeve and the limiting plate that is fixed in central sleeve terminal surface, and wherein, the wiring hole is located on the limiting plate, and parallel sheath line twines on central sleeve.

And the limiting plate is provided with a leakage protector.

The parallel sheath line includes the sheath and sets up a plurality of connecting wires in the sheath, and each connecting wire parallel distribution.

The invention has the following beneficial effects:

when the portable intelligent substation protection through-flow secondary test wire coil is in specific operation, the end face of the wire winding coil wheel is provided with the wiring hole, and the end part of the parallel sheath wire is wound on the wire winding coil wheel and then connected with the wiring hole, so that various hidden dangers caused by winding of a single connecting wire are avoided, the operation safety is ensured, meanwhile, the parallel sheath wire is convenient to wind and unwind, and the service life is long.

Drawings

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

fig. 2 is a cross-sectional view of the present invention.

Wherein, 1 is a wire coil wheel bracket, 2 is a central sleeve, 3 is a limiting plate, and 4 is a wire coil wheel rotating shaft.

Detailed Description

The invention is described in further detail below with reference to the accompanying drawings:

referring to fig. 1 and 2, the portable intelligent substation protection through-flow secondary test wire coil comprises a telescopic pull rod vehicle, a wire coil wheel support 1 and a wire coil wheel, wherein the wire coil wheel support 1 is fixed on the telescopic pull rod vehicle, the wire coil wheel is arranged on the wire coil wheel support 1, a wiring hole and a coil wheel crank are arranged on the end face of the wire coil wheel, and the end part of a parallel sheath wire is wound on the wire coil wheel and then connected with the wiring hole.

The telescopic pull rod trolley comprises a base and a telescopic pull rod, wherein a plurality of wheels are arranged at the bottom of the base, the telescopic pull rod is fixed on the base, and a wire coil wheel support 1 is fixed on the base.

A wire wheel rotating shaft 4 is fixed on the wire wheel bracket 1 through a rotating shaft bolt, wherein the wire wheel is sleeved on the wire wheel rotating shaft 4.

The plate wheel rotates and includes central sleeve 2 and be fixed in limiting plate 3 of 2 terminal surfaces of central sleeve, and wherein, the wiring hole is located on limiting plate 3, and parallel sheath line twines on central sleeve 2.

The limiting plate 3 is provided with a leakage protector.

The wire releasing and collecting device disclosed by the invention solves the problem of inconvenience in wire releasing and collecting in a test between devices with a long distance, is simple in design structure and reliable in safety performance, can greatly shorten the preparation time of a working site in the early stage, greatly shortens the time occupied by wire releasing and wire arranging of secondary workers in the test process, and improves the working efficiency of the working site.

The secondary cable is designed by adopting parallel lines, so that the winding and the sorting are convenient, the orderliness and the orderliness of a test field can be kept, the line inspection in the field test is clear, and the degree of orderliness of a working environment is improved.

The invention has convenient use, simple design and reliable function, and has very high practicability and operability in field work; meanwhile, the tool can bear other working objects with certain weight in the carrying process, so that the utilization rate of the tool is greatly improved.

The invention discloses a portable secondary line storage device which is developed by summarizing the past working experience and combining the working requirements and the field working characteristics of a main transformer protection test of a transformer substation. The cable length can be expanded, the working efficiency of testers is effectively improved, the standard degree of field ancestry is improved, the level of secondary equipment maintenance is improved, the working load of secondary operators is effectively reduced, and the outstanding problems of few personnel and multiple tasks in the current stage of secondary work are solved.

Claims

1. A portable intelligent substation protection current secondary test reel, characterized in that it comprises a telescopic pull-rod vehicle, a reel wheel bracket (1) and a winding reel wheel, wherein the reel wheel bracket (1) is fixed on the On the telescopic trolley, the winding reel is arranged on the reel bracket (1), the end face of the winding reel is provided with a wiring hole and a reel handle, and the end of the parallel sheath wire is wound around the reel Connect with the wiring hole after the disk is installed.

2 . The portable intelligent substation protection current secondary test wire reel according to claim 1 , wherein the parallel sheathed wire is a 4-core parallel sheathed wire, and the number of wiring holes is four. 3 .

3. The portable intelligent substation protection through-flow secondary test reel according to claim 1, wherein the telescopic pull rod cart comprises a base and a telescopic pull rod, wherein the bottom of the base is provided with a number of wheels, and the telescopic pull rod is fixed On the base, the wire reel bracket (1) is fixed on the base.

4. The portable intelligent substation protection through-flow secondary test reel according to claim 1, wherein the reel wheel bracket (1) is fixed with a reel wheel shaft (4) through a pivot pin, wherein the winding reel is The wheel is sleeved on the rotating shaft (4) of the disc wheel.

5 . The portable intelligent substation protection through-flow secondary test wire reel according to claim 1 , wherein the reel rotation comprises a central sleeve (2) and a limiter fixed on the end face of the central sleeve (2). 6 . A board (3), wherein the wiring hole is located on the limiting board (3), and the parallel sheath wire is wound on the central sleeve (2).

6. The portable intelligent substation protection through-current secondary test reel according to claim 1, characterized in that a leakage protector is provided on the limit plate (3).

7 . The portable intelligent substation protection current secondary test wire reel according to claim 1 , wherein the parallel sheathed wires comprise a sheath and a plurality of connecting wires arranged in the sheath, and the connecting wires are distributed in parallel. 8 .