CN209513893U - A kind of rail potential and rail current test macro - Google Patents

A kind of rail potential and rail current test macro Download PDF

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Publication number
CN209513893U
CN209513893U CN201822172085.8U CN201822172085U CN209513893U CN 209513893 U CN209513893 U CN 209513893U CN 201822172085 U CN201822172085 U CN 201822172085U CN 209513893 U CN209513893 U CN 209513893U
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China
Prior art keywords
rail
current
potential
acquisition module
test macro
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CN201822172085.8U
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Chinese (zh)
Inventor
周志录
盛望群
曲尚开
魏光
林志海
宫衍圣
黄文勋
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China Railway First Survey and Design Institute Group Ltd
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China Railway First Survey and Design Institute Group Ltd
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Abstract

The utility model relates to a kind of rail potentials and rail current test macro, and the system comprises rail potential acquisition modules and rail current acquisition module;Rail potential acquisition module includes high internal resistance potentiometer, measurement lead and drill rod electrode;Rail current acquisition module includes including split core type current transformer.The utility model is capable of real-time acquisition rail potential, current signal, obtains the parameter information of assessment rail potential, electric current, for analysis electric railway rail potential, current distribution and feature and provides reference for the safe operation and maintenance of equipment.

Description

A kind of rail potential and rail current test macro
Technical field
The utility model relates to electric railway technical fields, and in particular to a kind of rail potential and rail current test system System.
Background technique
Important component of the rail of electric railway as tractive power supply system, is not only the rail of locomotive, It and is the reflux conductor of traction power supply network.There is not good insulation between the earth since rail is directly layed on ballast aggregate, It causes part traction current to take in locomotive and leaks into the earth near flow point, reenter steel near traction substation or reflux point Rail returns to the ground terminal of power supply, and is generated significantly raised rail potential to ground by rail near flow point and reflux point in locomotive.
Compared to general fast railway, high-speed railway is since its traction load is big, and train load rate is high, and traction current is big, causes It is extremely obvious that rail potential increases phenomenon.Rail potential increase necessarily affect along equipment and personnel life safety, be easy to make At the bad or failure of same track signal equipment work, accelerates the aging of insulating pad between rail and sleeper, cause traction current different Situations such as normal.Therefore, a kind of electric railway rail potential of researching and designing and rail current test macro are of great significance, Basis can not only be provided for analysis electric railway rail potential, current distribution and feature, and can be further to study The equipment such as signal of communication along the line are interfered in electrification traction improves basis, while can also match for Along Railway choke transformer capacity Offer basis is provided.
Summary of the invention
The purpose of the utility model is to provide a kind of rail potentials and rail current test macro, are capable of real-time acquisition rail electricity Position, current signal obtain the parameter information of assessment rail potential, electric current, to analyze electric railway rail potential, current distribution Rule and feature simultaneously provide reference for the safe operation and maintenance of equipment.
The technology employed by the present utility model is
A kind of rail potential and rail current test macro, it is characterised in that:
The system comprises rail potential acquisition modules and rail current acquisition module;
Rail potential acquisition module includes high internal resistance potentiometer, measurement lead and drill rod electrode;
Rail current acquisition module includes split core type current transformer.
In rail potential acquisition module, high internal resistance potentiometer one end is connected to rail earthing clamp, one end through measuring lead The drill rod electrode for being connected to insertion the earth through measuring lead.
Rail current acquisition module includes three split core type current transformers, and two of them split core type current transformer respectively penetrates Rail double track electric current is tested towards the lead of choke transformer at isolated rail joint, another split core type current transformer penetrates rail Rail current is measured between two choke transformers at insulation joint.
The utility model has the advantage that
1, rail potential, current signal can be acquired in the utility model in real time, data synchronism is good, and measurement accuracy is high, easily Relationship between the distribution character and rule and tractive power supply system electrical quantity for analyzing each moment rail potential, electric current.
2, the utility model proposes system structure it is simple, while low cost is easy to carry, meets economy and practicability Requirement.
Detailed description of the invention
Fig. 1 is a kind of electric railway rail potential and rail current test macro schematic diagram.
Specific embodiment
The utility model is described in detail With reference to embodiment.
The utility model relates to a kind of rail potentials and rail current test macro, and the system comprises rail potential acquisitions Module and rail current acquisition module;Rail potential acquisition module includes high internal resistance potentiometer (Fluke F18B+ high internal resistance current potential Instrument), measurement lead and drill rod electrode;Rail current acquisition module includes split core type current transformer (Fluke i5S AC current clamp Table).
Rail potential acquisition module is connected to for measuring rail voltage-to-ground, high internal resistance potentiometer one end through measuring lead Rail earthing clamp, the drill rod electrode that one end is connected to insertion the earth through measuring lead.
For rail current acquisition module for measuring rail current, including three split core type current transformers, two of them are pincerlike Current transformer respectively penetrates the lead test rail double track electric current at isolated rail joint towards choke transformer, another is pincerlike Rail current is measured between two choke transformers that current transformer penetrates at isolated rail joint.
Specific implementation process is as follows:
Rail potential acquisition module connects rail earthing clamp, one end warp through measurement lead by high internal resistance potentiometer one end The drill rod electrode of measurement lead connection insertion the earth measures rail potential;Rail current acquisition module passes through split core type current transformer It penetrates the lead at isolated rail joint towards choke transformer and measures rail current.
Data processing module (HandyscopeHS6 DIFF high speed number can be transmitted in the rail potential of acquisition, current signal Word instrument), human-computer interaction module is connected by data processing module while limnograph, and by parallel communication interface (TiePie Multi Channel software and MATLAB software, laptop and hard disk), human-computer interaction module can be used for surveying Measure analysis, display and the storage of data.
The content of the utility model is not limited to cited by embodiment, and those of ordinary skill in the art are practical new by reading this Type specification and to any equivalent transformation that technical solutions of the utility model are taken, be the claim institute of the utility model Cover.

Claims (3)

1. a kind of rail potential and rail current test macro, it is characterised in that:
The system comprises rail potential acquisition modules and rail current acquisition module;
Rail potential acquisition module includes high internal resistance potentiometer, measurement lead and drill rod electrode;
Rail current acquisition module includes split core type current transformer.
2. a kind of rail potential according to claim 1 and rail current test macro, it is characterised in that:
In rail potential acquisition module, high internal resistance potentiometer one end is connected to rail earthing clamp through measuring lead, and one end is through surveying Amount lead is connected to the drill rod electrode of insertion the earth.
3. a kind of rail potential according to claim 1 and rail current test macro, it is characterised in that:
Rail current acquisition module includes three split core type current transformers, and two of them split core type current transformer respectively penetrates rail Rail double track electric current is tested towards the lead of choke transformer at insulation joint, another split core type current transformer penetrates rail insulation Rail current is measured between two choke transformers at section.
CN201822172085.8U 2018-12-24 2018-12-24 A kind of rail potential and rail current test macro Active CN209513893U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201822172085.8U CN209513893U (en) 2018-12-24 2018-12-24 A kind of rail potential and rail current test macro

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201822172085.8U CN209513893U (en) 2018-12-24 2018-12-24 A kind of rail potential and rail current test macro

Publications (1)

Publication Number Publication Date
CN209513893U true CN209513893U (en) 2019-10-18

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Application Number Title Priority Date Filing Date
CN201822172085.8U Active CN209513893U (en) 2018-12-24 2018-12-24 A kind of rail potential and rail current test macro

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CN (1) CN209513893U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111220849A (en) * 2019-11-18 2020-06-02 南京铁道职业技术学院 Resistance monitoring device under rail potential
CN111596331A (en) * 2020-04-17 2020-08-28 中铁建电气化局集团南方工程有限公司 Comprehensive testing system and method for traction reflux and steel rail potential of electrified railway

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111220849A (en) * 2019-11-18 2020-06-02 南京铁道职业技术学院 Resistance monitoring device under rail potential
CN111596331A (en) * 2020-04-17 2020-08-28 中铁建电气化局集团南方工程有限公司 Comprehensive testing system and method for traction reflux and steel rail potential of electrified railway

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