CN207636665U - A kind of Leakage Current harvester - Google Patents

A kind of Leakage Current harvester Download PDF

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Publication number
CN207636665U
CN207636665U CN201721625388.XU CN201721625388U CN207636665U CN 207636665 U CN207636665 U CN 207636665U CN 201721625388 U CN201721625388 U CN 201721625388U CN 207636665 U CN207636665 U CN 207636665U
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China
Prior art keywords
leakage current
communication module
insulator
microprocessor
current transformer
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Application number
CN201721625388.XU
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Chinese (zh)
Inventor
刘晓华
沈小军
姚京松
吴军
龙飞
杜勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Murong Electric Co Ltd
State Grid Corp of China SGCC
Maintenance Branch of State Grid Hubei Electric Power Co Ltd
Original Assignee
Shanghai Murong Electric Co Ltd
State Grid Corp of China SGCC
Maintenance Branch of State Grid Hubei Electric Power Co Ltd
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Application filed by Shanghai Murong Electric Co Ltd, State Grid Corp of China SGCC, Maintenance Branch of State Grid Hubei Electric Power Co Ltd filed Critical Shanghai Murong Electric Co Ltd
Priority to CN201721625388.XU priority Critical patent/CN207636665U/en
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Publication of CN207636665U publication Critical patent/CN207636665U/en
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  • Insulators (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)

Abstract

The utility model discloses a kind of Leakage Current harvesters, including current transformer, leakage current collection module, microprocessor and communication module, the current transformer is mounted at target insulator, the current transformer and leakage current collection module, the microprocessor and communication module communicate successively, and the communication module is used for and backstage monitoring terminal mutually communicates.It is by Leakage Current at target insulator and insulator contamination event procedure image/video, realize remote viewing, pre-warning and the evolution process video visualization of Voltage for Insulators on HV Lines surface filth state, more accurately to obtain the testing result of electric transmission line isolator pollution flashover, the detection quality of electric transmission line isolator pollution flashover is improved.

Description

A kind of Leakage Current harvester
Technical field
The utility model belongs to electric transmission line isolator on-line monitoring technique field more particularly to a kind of acquisition of Leakage Current Device.
Background technology
Insulator is one of the critical component of overhead power transmission transmission line of electricity, and the quality of performance directly influences whole transmission of electricity The safe operation of circuit.
It is aggravated with environmental degradation, pollution, gradually coverage is wide for grid pollution flashover accident, seriously threatens transmission facility Safe operation.In atmospheric environment, operation insulator is influenced by factors such as natural airborne dust, industrial discharges, and surface gradually deposits dirt Dirty things, under the influence of the various terrible weathers such as mist, dew, rain, snow so that the electrical strength of insulator substantially reduces, to draw Hair flashover causes the accident.According to statistics, in the total accident number of electric system, pollution flashover accident is only second to damage to crops caused by thunder and occupies second, but by It is very low in the automatic reclosing success rate of pollution flashover accident, caused by loss be 10 times of lightening hazard.
Pre-warning is generally by judging that the pollution level of insulator surface is realized, the 33rd committee of international conference on large HV electric systems It recommends 5 kinds and measures filthy method, i.e. equivalent salt density method, integrate surface pollution layer conductivity method, pulse counting method, leakage current Method and insulator contamination voltage gradient method.It is dynamic characterization parameter wherein there was only leakage current, is presently believed to be and most grinds Study carefully the pre-warning characteristic quantity of value.
Leakage current refer under applied voltage insulator by the electric current for flowing through surface pollution layer and reaching ground measured by the time of tide. It is that one kind is slipped through the net electric current, electric current of escaping.It is weather, voltage, filthy three elements concentrated expression and finally act on as a result, being Dynamic parameter is considered as most reacting the parameter of a science of pollution degree.When one timing of voltage and weather conditions, insulator Surface leakage current is directly proportional to filthy severity.That is the pulse of leakage current generally arise from exchange pollution flashover final stage it Before, and with approaching for flashover is closed on, pulse frequency and maximum amplitude will increase, and therefore, the same pollution flashover of insulator leakage current Relationship is determined there is apparent, can largely estimate and predict the pollution flashover voltage of insulator and comment between voltage The filth of valence insulator is horizontal, can be used for monitoring the operating status of contaminated insulator, and provides the alarm of flashover danger.
In the process of implementing the utility model, it is found by the applicant that at least having the following disadvantages in the prior art:
In the prior art, the detection of insulator Leakage Current mainly has the around-France and pincerlike HF current transformer method of electric current. The wherein around-France high certainty of measurement of electric current, due to being electrical connection, there are the danger of overvoltage for measurement;Pincerlike high-frequency current mutual inductance method Measurement has the advantages that non-electrical contact, but is limited by live insulator mounting means, and there are the spies that measurement accuracy is not high enough Point.
Utility model content
There is problem for the above-mentioned prior art, the utility model provides a kind of Leakage Current harvester, can not only be real The measurement of existing insulator surface Leakage Current, moreover it is possible to realize the electrical isolation of follow-up measurement module and insulator.
The utility model is achieved through the following technical solutions above-mentioned purpose:
A kind of Leakage Current harvester, described device include current transformer, leakage current collection module, microprocessor And communication module, the current transformer are mounted at target insulator, the current transformer and the leakage current collection Module, the microprocessor and the communication module communicate successively, and the communication module is used for and backstage monitoring terminal is mutual Communication.
Further, the current transformer is mounted on drainage thread, and the both ends of the drainage thread are insulated with target respectively Son is connected with tower crane.
Further, the current transformer is silent Hall sensor.
Further, the communication module is wireless communication module.
Further, the microprocessor is also integrated with solar recharging template.
Further, described device further includes temperature humidity measuring instrument, the temperature humidity measuring instrument and the microprocessor Device communicates.
The utility model has the beneficial effects that:
A kind of Leakage Current harvester of the utility model obtains the surface leakage electricity of insulator by current transformer Signal is flowed, to realize the measurement of insulator surface Leakage Current, meanwhile, current signal is converted to voltage by current transformer to be believed Number, and acquired to microprocessor by leakage current collection module, you can realize follow-up measurement module and insulator it is electrical every From signal is communicated by communication module to platform and monitors terminal by microprocessor, completes the surface current value at target insulator Acquisition, the monitoring for the operating status of insulator provide support.
Description of the drawings
It is required in being described below to embodiment in order to illustrate more clearly of the technical scheme in the embodiment of the utility model Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings Obtain other attached drawings.
Fig. 1 is a kind of block schematic illustration of Leakage Current harvester of the utility model embodiment;
Fig. 2 is a kind of arrangement schematic diagram of Leakage Current harvester of the utility model embodiment.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work The every other embodiment obtained, shall fall within the protection scope of the present invention.
Fig. 1 is a kind of block schematic illustration of Leakage Current harvester of the utility model embodiment, and Fig. 2 is that this practicality is new A kind of arrangement schematic diagram of Leakage Current harvester of type embodiment.With reference to figure 1 and Fig. 2, the one of the utility model embodiment Kind Leakage Current harvester, including current transformer 1, leakage current collection module 2, microprocessor 3 and communication module 4, electricity Current transformer 1 is mounted at target insulator 5, current transformer 1 and leakage current collection module 2, microprocessor 3 and communication Module 4 communicates successively, and communication module 4 is used for and backstage monitoring terminal mutually communicates.
A kind of Leakage Current harvester of the utility model obtains the surface leakage electricity of insulator by current transformer Signal is flowed, to realize the measurement of insulator surface Leakage Current, meanwhile, current signal is converted to voltage by current transformer to be believed Number, and acquired to microprocessor by leakage current collection module, you can realize follow-up measurement module and insulator it is electrical every From signal is communicated by communication module to platform and monitors terminal by microprocessor, completes the surface current value at target insulator Acquisition, the monitoring for the operating status of insulator provide support.
In conjunction with Fig. 2, the current transformer 1 of the utility model embodiment may be mounted on drainage thread 6, and the two of drainage thread 6 End is connected with target insulator 5 with tower crane respectively.
Preferably, the current transformer 1 of the utility model embodiment is silent Hall sensor, so as to greatly improve Sampling precision and reliability obtain insulator surface leakage current in real time.
The communication module 4 of the utility model embodiment is wireless communication module, to save cable, simplifies installation, construction party Just, and security risk can be reduced.
In conjunction with Fig. 2, the microprocessor 3 of the utility model embodiment is also integrated with solar recharging template 8, can lead in this way It crosses solar energy to charge to it, ensures the normal operation of microprocessor
In addition, in conjunction with Fig. 1 and Fig. 2, the device of the utility model embodiment can also include temperature humidity measuring instrument 7, should Temperature humidity measuring instrument 7 is used to detect the micro climate data at target insulator, and the monitoring for the operating status for insulator carries For supporting.The temperature humidity measuring instrument 7 and microprocessor 3 of the utility model embodiment communicate, and can thus acquire weather Unit is integrated in Leakage Current collecting unit, facilitates arrangement.
In the utility model embodiment, micro climate data include mainly the real-time temperature values and humidity value at insulator.
Embodiment provided above is the better embodiment of the utility model, only is used for facilitating illustrating the utility model, and It is non-to impose any limitation on the present invention, any those of ordinary skill in the art, if not departing from In the range of the carried technical characteristic of the utility model, locally changes or repair using made by the utility model disclosed technology content The equivalent embodiment of decorations, and without departing from the technical characteristics of the utility model content, still fall within the utility model technical characteristic In the range of.

Claims (6)

1. a kind of Leakage Current harvester, which is characterized in that described device includes current transformer (1), leakage current collection Module (2), microprocessor (3) and communication module (4), the current transformer (1) is mounted at target insulator (5), described Current transformer (1) and the leakage current collection module (2), the microprocessor (3) and the communication module (4) are successively Communication, the communication module (4) is used for and backstage monitoring terminal mutually communicates.
2. a kind of Leakage Current harvester according to claim 1, which is characterized in that current transformer (1) peace On drainage thread (6), the both ends of the drainage thread (6) are connected with target insulator (5) with tower crane respectively.
3. a kind of Leakage Current harvester according to claim 1, which is characterized in that the current transformer (1) is Silent Hall sensor.
4. a kind of Leakage Current harvester according to claim 1, which is characterized in that the communication module (4) is nothing Line communication module.
5. a kind of Leakage Current harvester according to claim 1, which is characterized in that the microprocessor (3) also collects At there is solar recharging template (8).
6. according to a kind of Leakage Current harvester of claim 1-4 any one of them, which is characterized in that described device is also wrapped Include temperature humidity measuring instrument (7), the temperature humidity measuring instrument (7) and the microprocessor (3) communication.
CN201721625388.XU 2017-11-29 2017-11-29 A kind of Leakage Current harvester Active CN207636665U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721625388.XU CN207636665U (en) 2017-11-29 2017-11-29 A kind of Leakage Current harvester

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721625388.XU CN207636665U (en) 2017-11-29 2017-11-29 A kind of Leakage Current harvester

Publications (1)

Publication Number Publication Date
CN207636665U true CN207636665U (en) 2018-07-20

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109324221A (en) * 2018-10-31 2019-02-12 深圳碟能创新科技有限公司 Ponding leakage inductance answers alarm
CN110174613A (en) * 2019-06-21 2019-08-27 国网西藏电力有限公司拉萨供电公司 A kind of state monitoring apparatus and method of disconnecting switch
CN116973697A (en) * 2023-06-20 2023-10-31 无锡广盈集团有限公司 Leakage current identification system and method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109324221A (en) * 2018-10-31 2019-02-12 深圳碟能创新科技有限公司 Ponding leakage inductance answers alarm
CN110174613A (en) * 2019-06-21 2019-08-27 国网西藏电力有限公司拉萨供电公司 A kind of state monitoring apparatus and method of disconnecting switch
CN116973697A (en) * 2023-06-20 2023-10-31 无锡广盈集团有限公司 Leakage current identification system and method
CN116973697B (en) * 2023-06-20 2024-03-26 无锡广盈集团有限公司 Leakage current identification system and method

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