CN216900739U

CN216900739U - High-efficiency identification device for zone low-voltage branch line based on synchronous current comparison method

Info

Publication number: CN216900739U
Application number: CN202123047774.4U
Authority: CN
Inventors: 杨军; 邱卫卫; 管委玲; 苏林志; 倪烨; 黄伟; 王静
Original assignee: Taizhou Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Current assignee: Taizhou Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Priority date: 2021-12-06
Filing date: 2021-12-06
Publication date: 2022-07-05
Anticipated expiration: 2031-12-06

Abstract

The utility model discloses a high-efficiency identification device for a platform area low-voltage branch line based on a synchronous current comparison method, which comprises the following steps: the energy consumption end comprises a puncture wire clamp, an automatic phase change switch and a single-phase electric heating furnace, the puncture wire clamp is connected with one end of a cable, the automatic phase change switch is used for sequentially connecting ABC phases, and the single-phase electric heating furnace is used for consuming power at constant power; the detection end is connected with the other end of the cable to be identified and used for collecting current signals; and the controller is connected with the detection end and used for judging whether the two ends of the cable belong to the same cable or not according to the collected current signal. The utility model utilizes the principle that the current in the cable changes when the equipment consumes power to enable the energy consumption end to regularly take power from the cable, the detection is carried out through the detection end, and when the current signal is the same as the regularity of the energy consumption, the same cable can be judged. Therefore, the recognition speed can be greatly improved, and the working efficiency is improved.

Description

High-efficiency identification device for zone low-voltage branch line based on synchronous current comparison method

Technical Field

The utility model relates to the field of cable maintenance, in particular to a station area low-voltage branch line efficient identification device based on a synchronous current comparison method.

Background

Unlike overhead high voltage lines, cables are often laid in cable trenches, tunnels, pipes or indoors. After entering modern society, due to the reasons of shortage of urban land, high traffic pressure, city appearance construction and the like, an underground cable power transmission mode is generally adopted in large cities. Compared with an overhead line, the cable has the advantages of small occupied area, reliable power transmission, strong anti-interference capability and the like.

In some cases, the buried cables have a problem that it is impossible to determine which switch carries which electric device because of missing or wrong switch identification, that is, the cables are crossed and disordered, and identification is required. If the cables are arranged one by one, the time consumption is huge and the efficiency is low. There is currently a lack of suitable means of identification.

SUMMERY OF THE UTILITY MODEL

Aiming at the problem that the prior art cannot identify crossed and disordered unmarked buried cables, the utility model provides a high-efficiency identification device for a platform area low-voltage branch line based on a synchronous current comparison method.

The technical scheme of the utility model is as follows.

High-efficient recognition device of platform district low pressure branch line based on synchronous current contrast method includes:

the energy consumption end comprises a puncture wire clamp, an automatic phase-change switch and a single-phase electric heating furnace, the puncture wire clamp is connected with one end of a cable, the automatic phase-change switch is used for sequentially connecting ABC phases, and the single-phase electric heating furnace is used for consuming electricity at constant power;

the detection end is connected with the other end of the cable to be identified and used for collecting current signals;

and the controller is connected with the detection end and used for judging whether the two ends of the cable belong to the same cable or not according to the collected current signals.

The utility model utilizes the principle that the current in the cable changes when the equipment consumes power to ensure that the energy consumption end regularly gets power from the cable, the detection is carried out through the detection end, and when the current signal is the same as the regularity of energy consumption, the cable can be judged to be the same cable. Therefore, the recognition speed can be greatly improved, and the working efficiency is improved.

Preferably, the detection end comprises an open type current transformer, and the open type current transformer is sleeved outside the cable to be identified and used for sensing current in the cable.

Preferably, the open type current transformer and the puncture wire clamp are all multiple groups.

Preferably, each commutation of the automatic commutation switch is spaced one second apart.

Preferably, the rated current of the single-phase electric heating furnace is 10A.

The substantial effects of the utility model include: through regularly getting the electricity and detecting from another to the cable, can judge whether the cable is same root according to the current signal law, improved the discernment speed to alternately chaotic no sign ground burying cable by a wide margin, improve work efficiency.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present invention;

the figure includes: 1-energy consumption end, 2-detection end and 3-controller.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present invention. It will be understood by those skilled in the art that the present invention may be practiced without some of these specific details. In some instances, methods, means, elements and circuits that are well known to those skilled in the art have not been described in detail so as not to obscure the present invention.

In the description of the embodiments herein, "/" means "or" unless otherwise specified, for example, a/B may mean a or B; "and/or" herein is merely an association describing an associated object, and means that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of the present application, "a plurality" means two or more than two.

In the following, the terms "first", "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present embodiment, "a plurality" means two or more unless otherwise specified.

Example (b):

as shown in fig. 1, the device for efficiently identifying the low-voltage branch line of the transformer area based on the synchronous current contrast method comprises:

the energy consumption end 1 comprises a puncture wire clamp, an automatic phase change switch and a single-phase electric heating furnace, wherein the puncture wire clamp is connected with one end of a cable, the automatic phase change switch is used for sequentially switching on an ABC phase, and the single-phase electric heating furnace is used for consuming electricity with constant power. Wherein, the phase change interval of each time of the automatic phase change switch is one second, and the rated current of the single-phase electric heating furnace is 10A.

The detection end 2 is connected with the other end of the cable to be identified and used for collecting current signals; the detection end comprises an open type current transformer, and the open type current transformer is sleeved outside the cable to be identified and used for sensing current in the cable.

And the controller 3 is connected with the detection end and used for judging whether the two ends of the cable belong to the same cable or not according to the collected current signals.

Wherein, open type current transformer and puncture fastener are the multiunit.

In the identification of the present embodiment, the ABC phases are sequentially turned on in order, and the 10A current consumed by the electric heater is sequentially supplied from the ABC phases, and is cyclically turned on for 3 cycles each time. The liquid crystal display of the identification device automatically displays the fluctuation value of the ABC three-phase current, and if the fluctuation value of the ABC three-phase current every 1 second is 10A, the ABC three-phase current is determined to be the same cable; if the liquid crystal display shows that the three-phase current fluctuation value is not 10A, the three-phase current fluctuation value is not the same cable.

According to the power consumption detection method, the principle that current in the cable changes when equipment consumes power is utilized, the power consumption end obtains power regularly from the cable, the power consumption end detects power through the detection end, and when a current signal is the same as the power consumption regularity, the power consumption end can judge that the power consumption end is the same cable. Therefore, the recognition speed can be greatly improved, and the working efficiency is improved.

Through the description of the above embodiments, those skilled in the art will understand that, for convenience and simplicity of description, only the division of the above functional modules is used as an example, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to complete all or part of the above described functions.

Units described as separate parts may or may not be physically separate, and parts displayed as units may be one physical unit or a plurality of physical units, may be located in one place, or may be distributed to a plurality of different places. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. High-efficient recognition device of platform district low pressure branch line based on synchronous current contrast method, its characterized in that includes:

2. The station area low-voltage branch line efficient identification device based on the synchronous current contrast method as claimed in claim 1, wherein the detection end comprises an open type current transformer, and the open type current transformer is sleeved outside the cable to be identified and used for sensing the current in the cable.

3. The station area low-voltage branch line efficient identification device based on the synchronous current contrast method according to claim 2, wherein the open type current transformer and the puncture wire clamp are both in multiple groups.

4. The station area low-voltage branch line high-efficiency identification device based on the synchronous current contrast method as claimed in claim 1, wherein each commutation of the automatic commutation switch is separated by one second.

5. The station area low-voltage branch line high-efficiency identification device based on the synchronous current contrast method as claimed in claim 1, wherein the rated current of the single-phase electric heating furnace is 10A.