CN216696481U

CN216696481U - Intelligent device for quickly selecting performance consistency of lightning arrester

Info

Publication number: CN216696481U
Application number: CN202122262295.8U
Authority: CN
Inventors: 杨家凯; 杨杰; 沈燚; 何瑞婷; 陈有忠; 普朝健; 何楚平; 韦超; 徐正佼; 杨建斌; 李国海; 卯明旺; 刘华; 毕海洋; 周园; 李春利; 杜直珊; 郭皓钰; 张航; 朱云武
Original assignee: Chuxiong Power Supply Bureau of Yunnan Power Grid Co Ltd
Current assignee: Chuxiong Power Supply Bureau of Yunnan Power Grid Co Ltd
Priority date: 2021-09-17
Filing date: 2021-09-17
Publication date: 2022-06-07
Anticipated expiration: 2031-09-17

Abstract

The utility model relates to an intelligent rapid arrester performance consistency selecting device which comprises a processor, wherein the output end of the processor is connected with a first input end of an adjustable high-voltage direct-current power supply, the output end of the adjustable high-voltage direct-current power supply is connected with a first sampling resistor and one ends of a plurality of arresters to be detected, the other end of the first sampling resistor is connected with one end of a second sampling resistor, and the other ends of the plurality of arresters to be detected are connected with one end of respective detection resistors; the second input end of the adjustable high-voltage direct-current power supply is connected with the other end of the second sampling resistor and the other end of the detection resistor; each voltage acquisition end of the processor is arranged between the first sampling resistor and the second sampling resistor and between the plurality of lightning arresters to be detected and the respective detection resistor. The lightning arrester parameter selection method can intuitively reflect the different parameters of the lightning arrester through the different voltages, and can quickly select the lightning arrester with different parameters.

Description

Intelligent device for quickly selecting performance consistency of lightning arrester

Technical Field

The utility model belongs to the field of lightning arrester verification, and particularly relates to an intelligent rapid lightning arrester performance consistency selecting device.

Background

High voltage direct current transmission systems may transmit power to a remote location via high voltage direct current. High voltage direct current transmission systems are widely used due to advantages such as less investment costs, unlimited cable length and less transmission losses.

Since the hvdc transmission system transmits power via hvdc, it may be necessary to use a checked lightning arrester. The lightning arrester is used for equipment overvoltage protection, and neutral point ground operation can generate operation overvoltage, and can damage electrical equipment.

However, the parameters of the same lightning arresters are different, and if the difference is large, the equipment is broken down, and in order to avoid errors, the lightning arresters with inconsistent parameters need to be picked out, but the picking efficiency is low one by one. Therefore, it is worth studying how to identify the lightning arresters with different parameters from a plurality of lightning arresters.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model provides an intelligent quick arrester performance consistency selecting device.

The technical scheme of the utility model is as follows:

an intelligent rapid arrester performance consistency selecting device comprises a processor, wherein the output end of the processor is connected with a first input end of an adjustable high-voltage direct-current power supply, the output end of the adjustable high-voltage direct-current power supply is connected with a first sampling resistor and one ends of a plurality of arresters to be detected, the other end of the first sampling resistor is connected with one end of a second sampling resistor, and the other ends of the plurality of arresters to be detected are connected with one end of respective detection resistors; the second input end of the adjustable high-voltage direct-current power supply is connected with the other end of the second sampling resistor and the other end of the detection resistor; each voltage acquisition end of the processor is arranged between the first sampling resistor and the second sampling resistor and between the plurality of lightning arresters to be detected and the respective detection resistor.

Furthermore, the second input end of the adjustable high-voltage direct-current power supply is also connected with the current-limiting detection module, the output end of the current-limiting detection module is connected with the input end of the processor, and the other end of the second sampling resistor and the other end of each detection resistor are connected with the input end of the current-limiting detection module.

Furthermore, a first lightning arrester close to the adjustable high-voltage direct-current power supply is a reference standard lightning arrester.

Furthermore, the respective detection resistors of the lightning arresters to be detected have the same resistance value.

Further, the processor is connected with the printer and the display screen.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model is used for a high-voltage direct-current transmission system, a plurality of lightning arresters are connected in parallel, the resistor and the adjustable high-voltage direct-current power supply are skillfully used, the difference of parameters of the lightning arresters is intuitively reflected through the difference of voltage, and the lightning arresters with different parameters can be quickly selected.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Detailed Description

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

Unless otherwise defined, technical or scientific terms used in the embodiments of the present application should have the ordinary meaning as understood by those having ordinary skill in the art. The use of "first," "second," and similar terms in the present embodiments does not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item preceding the word comprises the element or item listed after the word and its equivalent, but does not exclude other elements or items. "mounted," "connected," and "coupled" are to be construed broadly and may include, for example, fixed and removable connections or integral connections; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. "Upper," "lower," "left," "right," "lateral," "vertical," and the like are used solely in relation to the orientation of the components in the figures, and these directional terms are relative terms that are used for descriptive and clarity purposes and that can vary accordingly depending on the orientation in which the components in the figures are placed.

As shown in fig. 1, the intelligent quick arrester performance consistency selecting device of this embodiment includes a processor CPU, an output end Uk of the processor CPU is connected to a first input end of an adjustable high-voltage direct-current power supply, an output end of the adjustable high-voltage direct-current power supply is connected to a first sampling resistor RF1, one end of each of a plurality of arresters to be tested B1, and one end of each of B2 to … Bn, the other end of the first sampling resistor RF1 is connected to one end of a second sampling resistor RF0, and the other ends of the plurality of arresters to be tested B1, and B2 to … Bn are connected to one end of each of a plurality of detection resistors R1, R2 to … Rn.

The second input end of the adjustable high-voltage direct-current power supply is connected with a current-limiting detection module D, the output end of the current-limiting detection module D is connected with an input end XL of the processor, and the other end of the second sampling resistor RF0 and the other ends of the respective detection resistors R1 and R2- … Rn are connected with the input end of the current-limiting detection module D. And the processor grounding end G is connected with the input end of the current-limiting detection module D and is grounded. The voltage acquisition ends Uh, U1 and U2- … Un of the CPU are arranged between the first sampling resistor RF1 and the second sampling resistor RF0 and between the plurality of to-be-tested lightning arresters B1 and B2- … Bn and the respective detection resistors R1 and R2- … Rn.

In this embodiment, the first arrester B1 close to the adjustable high-voltage dc power supply is a reference standard arrester, and the acquired voltage Uh is a reference voltage. The respective detection resistors R1 and R2- … Rn of the lightning arresters to be detected have the same resistance value. The processor is connected with the printer and the display screen and is used for displaying and printing results, and the display screen is provided with operation keys.

The working process of the utility model is as follows:

the voltage UK is output by a CPU of the processor, the voltage Uh is input at the end, the high-voltage direct current power supply generates direct current, B1 and B2 … Bn are lightning arresters to be selected, the voltage generated by the high-voltage direct current power supply is measured, the voltage of the lightning arrester B1 is taken as a standard value, the resistance is the same, the voltage is the same, the parameters of the lightning arresters are consistent, and the lightning arresters with different voltages are displayed to be different from the parameters of other lightning arresters.

And current is collected and input from an XL end of a processor, if a certain lightning arrester has a large error and is about to be broken down, and the current-limiting detection module detects the error, the high-voltage direct-current power supply is adjusted to zero.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a device is selected fast to arrester performance uniformity intelligence which characterized in that: the device comprises a processor, wherein the output end of the processor is connected with the first input end of an adjustable high-voltage direct-current power supply, the output end of the adjustable high-voltage direct-current power supply is connected with a first sampling resistor and one end of each of a plurality of arresters to be detected, the other end of the first sampling resistor is connected with one end of a second sampling resistor, and the other ends of the arresters to be detected are connected with one end of respective detection resistors; the second input end of the adjustable high-voltage direct-current power supply is connected with the other end of the second sampling resistor and the other end of the detection resistor; and each voltage acquisition end of the processor is arranged between the first sampling resistor and the second sampling resistor and between the plurality of lightning arresters to be detected and the respective detection resistor.

2. The apparatus of claim 1, wherein: the second input end of the adjustable high-voltage direct-current power supply is also connected with the current-limiting detection module, the output end of the current-limiting detection module is connected with the input end of the processor, and the other end of the second sampling resistor and the other end of each detection resistor are connected with the input end of the current-limiting detection module.

3. The apparatus of claim 1, wherein: the first lightning arrester close to the adjustable high-voltage direct-current power supply is a reference standard lightning arrester.

4. The apparatus of claim 1, wherein: the respective detection resistors of the lightning arresters to be detected have the same resistance value.

5. The apparatus of claim 1, wherein: the processor is connected with the printer and the display screen.