CN207908574U - Contact net voltage non-contact type measuring device - Google Patents
Contact net voltage non-contact type measuring device Download PDFInfo
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- CN207908574U CN207908574U CN201820384296.5U CN201820384296U CN207908574U CN 207908574 U CN207908574 U CN 207908574U CN 201820384296 U CN201820384296 U CN 201820384296U CN 207908574 U CN207908574 U CN 207908574U
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- contact net
- coupling sensor
- contactless
- electric field
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Abstract
The utility model provides a kind of contact net voltage non-contact type measuring device, which includes：The field distribution homogeneous area around catenary design roof high-tension apparatus, electric locomotive high-tension apparatus or contact net circuit is arranged in contactless field coupling sensor, in the field distribution homogeneous area inductive coupling electric field intensity signal；Display device is connect, the electric field intensity signal for receiving contactless field coupling sensor inductive coupling with the contactless field coupling sensor, shows the contact net voltage determined according to the electric field intensity signal.Above-mentioned technical proposal improves the safety of contact net voltage detecting and maintenance, convenience.
Description
Technical field
The utility model is related to contact nets in electrified railways detection technique field, more particularly to a kind of contact net voltage is non-to be connect
Touch measuring apparatus.
Background technology
Contact net voltage is the important indicator of electric railway traction power supply system ability, and contact net overtension influences electricity
Gas insulation performance；Contact net brownout, load equipment can not work normally；Harmonic components influence traction confession in contact net voltage
The stability and running quality of electric system, therefore contact net voltage is an important technical indicator.
Currently, the conventionally employed voltage transformer of electric railway includes electromagnetic potential transformer (PT) and capacitive battery
Mutual inductor (CVT), two kinds of mutual inductors is pressed to need to connect electrical body, mutual inductor top forms equipotential, and sensor with electrical body
Volume is big, weight is big, insulating requirements are high, is unfavorable for repairing.
There are the following problems for the detection method of the conventional voltage transformer of existing use, is mainly manifested in：
(1) electrical dangerous, insulating of electric measurement of high pressure is realized using insulating materials, by external environment, manufacture craft, operation
High-voltage breakdown problem easily occurs for the influences such as aging；
(2) it is difficult to safeguard, needs to carry out periodical test after vehicle, circuit, detecting system, by installation environment and peace
Full property requires, and period measuring is difficult to realize, there are more maintenance missings；
(3) volume is big, weight is big, and conventional voltage transformer largely uses insulating materials, to increase creepage distance, full skirt face
Product is big, and weight is big.
To sum up, the detection scheme of the conventional voltage transformer of existing use cannot meet contact net voltage detecting, peace
Demand for the national games.
Utility model content
The utility model embodiment provides a kind of contact net voltage non-contact type measuring device, to improve contact net electricity
Pressure detection and the safety safeguarded, convenience, the equipment include：
Contactless field coupling sensor, setting are set in catenary design roof high-tension apparatus, electric locomotive high pressure
Field distribution homogeneous area around standby or contact net circuit, in the field distribution homogeneous area inductive coupling electric-field strength
Spend signal；
Display device is connect with the contactless field coupling sensor, is passed for receiving contactless field coupling
The electric field intensity signal of sensor inductive coupling shows the contact net voltage determined according to the electric field intensity signal.
With in the prior art using the conventional voltage transformer for needing to connect electrical body, formed with electrical body at the top of mutual inductor
Equipotential, the detection scheme for carrying out contact net voltage compare, the technical solution that the utility model embodiment provides, first,
Without with catenary design roof high-tension apparatus, electric locomotive high-tension apparatus or contact net wiring circuit contact in the case of, utilize
Field coupling principle, in the field distribution homogeneous area inductive coupling electric field intensity signal, electric insulation is safe, frequency
Response is wide, and device volume is small, light-weight.Then, display device receives the electricity of contactless field coupling sensor inductive coupling
Field intensity signal shows the contact net voltage determined according to electric field intensity signal, improves contact net voltage detecting and maintenance
Safety, convenience.
Description of the drawings
Attached drawing described herein is used to provide a further understanding of the present invention, and is constituted part of this application,
The restriction to the utility model is not constituted.In the accompanying drawings：
Fig. 1 is the structural schematic diagram of contact net voltage non-contact type measuring device in the utility model embodiment；
Fig. 2 is the structural schematic diagram of the utility model embodiment middle plateform electric pole type coupling sensor；
Fig. 3 is the schematic diagram demarcated to contactless field coupling sensor in the utility model embodiment.
Specific implementation mode
To make the purpose of this utility model, technical solution and advantage be more clearly understood, with reference to embodiment and attached
Figure, is described in further details the utility model.Here, the exemplary embodiment and its explanation of the utility model are for solving
The utility model is released, but is not intended to limit the scope of the present invention.
Since inventor considers the technical problems existing in the prior art, a kind of contactless voltage of contact net voltage
Measurement scheme, the program include mainly：By being set to catenary design roof high-tension apparatus, EMU (electric locomotive) high pressure
Standby, contact net surrounding electric field analysis, chooses field distribution homogeneous area, and in the case where ensureing electric insulation distance condition, installation is non-to be connect
Touch field coupling sensor；According to field distribution principle, the signal of the sensor output of data collecting system acquisition is carried out
Analysis, obtains contact net voltage, is shown by display device.The contact net voltage non-contact measurement method of the utility model
And equipment, using field coupling principle, using contactless field coupling sensor, electric insulation is safe, frequency response
Width, device volume is small, light-weight, provides a kind of reliable technological means for the measurement of contact net voltage, improves power supply and set
Safety, efficiency and the convenience of standby detection.The program is described in detail below as follows.
Fig. 1 is the structural schematic diagram of contact net voltage non-contact type measuring device in the utility model embodiment, such as Fig. 1 institutes
Show, which includes：
Contactless field coupling sensor 1, setting are set in catenary design roof high-tension apparatus, electric locomotive high pressure
Field distribution homogeneous area around standby or contact net circuit, in the field distribution homogeneous area inductive coupling electric-field strength
Spend signal；
Display device 2 is connect with the contactless field coupling sensor, is passed for receiving contactless field coupling
The electric field intensity signal of sensor inductive coupling shows the contact net voltage determined according to the electric field intensity signal.
With in the prior art using the conventional voltage transformer for needing to connect electrical body, formed with electrical body at the top of mutual inductor
Equipotential, the detection scheme for carrying out contact net voltage compare, the technical solution that the utility model embodiment provides, first,
In the case of being contacted with catenary design roof high-tension apparatus, electric locomotive high-tension apparatus or contact net, electric field is utilized
Coupling principle, in the field distribution homogeneous area inductive coupling electric field intensity signal, electric insulation is safe, frequency response
Width, device volume is small, light-weight.Then, display device receives the electric-field strength of contactless field coupling sensor inductive coupling
Signal is spent, shows the contact net voltage determined according to the electric field intensity signal, improves contact net voltage detecting and maintenance
Safety, convenience.
When it is implemented, in the scheme that the utility model embodiment provides, contactless field coupling sensor coupling sense
Electric field intensity signal is answered, an other equipment (such as an equipment data acquisition analyzing) can be utilized according to the electric field strength
The relationship of signal and electric field intensity signal and voltage, determines how contact net voltage (specifically determines as detailed below about other
Equipment：The introduction of equipment data acquisition analyzing), the contact net determined according to the electric field intensity signal is shown by display device
Voltage.Current contactless field coupling sensor is to apply in meteorological or geological exploration field, and in the prior art using needing
The conventional voltage transformer of electrical body is connected, mutual inductor top forms equipotential with electrical body, carries out the inspection of contact net voltage
Survey scheme compares, by above-mentioned contactless field coupling sensor inductive coupling electric field intensity signal, according to inductive coupling
Electric field intensity signal determines the mode of contact net voltage and display, is great breakthrough, is of great significance.
In one embodiment, above-mentioned other equipment can be an equipment data acquisition analyzing, and the equipment is according to the electricity
Signal is pressed, contact net voltage is determined, is shown by above-mentioned display device, so that staff understands contact net voltage feelings in time
Condition improves safety.When it is implemented, equipment data acquisition analyzing can be according to the voltage signal of detection, and prestore
The relationship for connecing electric field intensity signal and voltage, determine contact net voltage.
When it is implemented, the relationship of electric field intensity signal and voltage can be pre-stored, the relationship can with table,
The form of chart or mathematical model stores, and the method that above-mentioned equipment data acquisition analyzing determines contact net voltage can be：It receives
To after inductive coupling electric field intensity signal, by inductive coupling electric field intensity signal in the relationship of electric field intensity signal and voltage into
Row matching, finds the corresponding voltage of inductive coupling electric field intensity signal, as contact net voltage.
When it is implemented, can indicate contact net voltage there are three scene：1. catenary design roof high-tension apparatus is attached
Closely, 2. near electric locomotive high-tension apparatus, and 3. around contact net cable.Specifically, the 1. contact that contact net voltage is related to
Net detection vehicle roof high-tension apparatus, 2. electric locomotive high-tension apparatus be due to vehicle pantograph rise formed etc. with contact net it is electric
Position, the position voltage are equal to contact net voltage.In addition, 3. contact net is railway power supply technical term, refer to for railway power supply
Side in orbit clue, all clues and the metallic object (such as pantograph) being attached thereto can form equipotential system.Cause
This, the above voltage 1., 2. and 3. can represent contact net voltage.
Based on set forth above, when it is implemented, the scene that contactless field coupling sensor 1 can be arranged may include
Three：1. catenary design roof high-tension apparatus, 2. electric locomotive high-tension apparatus or 3. contact net.This three positions are to make
With scene difference, 1 is only installed.It such as uses on catenary design, is just set mounted on catenary design roof high pressure
Near standby electrical body low-pressure side；It is such as used in electric locomotive, it is attached to be just mounted on electric locomotive high-tension apparatus electrical body low-pressure side
Closely；It such as uses, is just mounted on around contact net, such as at electrical body low-pressure side insulator near contact net.
When it is implemented, non-contact field coupling sensor and above-mentioned " 1. catenary design roof high-tension apparatus, 2. electricity
Power locomotive high-voltage equipment and 3. contact net " is not connected to, and refers to that specific position is installed at above-mentioned three, meeting around above-mentioned position
Relatively stable field distribution (field distribution is uniform) is formed, non-contact field coupling sensor is being evenly distributed in the electric field of region
Generate inductive coupling electric field intensity signal.
When it is implemented, contactless field coupling sensor can carry out wired company with display device by signal cable
It connects, can also be integrated wireless communication module therebetween, carry out data wireless transmission.
When it is implemented, the scheme that the utility model embodiment provides, it is first determined field distribution homogeneous area：To contact
Net detection vehicle roof apparatus, EMU (electric locomotive) high-tension apparatus, contact net surrounding electric field distribution situation are analyzed, and are chosen
Field distribution homogeneous area.Specifically determination process may include：To catenary design roof apparatus, EMU (electric locomotive)
High-tension apparatus, wiring circuit contact net week enclose analysis of electric field, build catenary design roof high-tension apparatus, EMU high-tension apparatus,
The simulation model of contact net is arranged boundary condition, can be utilized according to electromagnetic field basic principle using finite element method
Existing ANSYS, COMSOL, the softwares such as MATLAB analyze above-mentioned high-tension apparatus surrounding electric field distribution situation.
When it is implemented, above-mentioned field distribution may include AC field and DC electric field.Electric locomotive may include moving
Vehicle.
In one embodiment, the contactless field coupling sensor and catenary design roof high-tension apparatus,
The distance between electric locomotive high-tension apparatus or contact net circuit be according to voltage class residing for high-tension apparatus or contact net clue,
Height above sea level factor is determined.
When it is implemented, the scheme that the utility model embodiment provides, secondly in the case where ensureing electric insulation distance condition, peace
Contactless field coupling sensor is filled, detailed process may include：It ensures under electric insulation distance condition, in above-mentioned selection electricity
In field distribution homogeneous area, contactless field coupling sensor is installed, according to voltage class, height above sea level residing for high-tension apparatus
Etc. factors according to related specification requirement, rational mounting distance is set, meet electric insulation requirement.Specifically, it is determined that safety away from
From method can be：In laboratory, the mutual peace of the high-tension apparatuses such as contactless field coupling sensor and contact net is simulated
Holding position builds the model of catenary design roof high-tension apparatus, electric locomotive high-tension apparatus and contact net circuit, by this
Model is simulated in real time, determines the distance of contactless field coupling sensor, i.e. safe distance, at the scene actual installation
When, so that it may according to the safe distance, to install contactless field coupling sensor, after determining safe distance at the scene, then
The mode of installation is compared, not only safety, but also efficient.According to TB10621-2014《Design of High-speed Railway specification》It is required that no
There is different insulative required distance with voltage class electrical body to surrounding objects；According to GB 311.1-2012《Insulation Coordination the 1st
Divide definition, principle and rule》According to use environment, height above sea level correction factor can be modified.Such scheme improves contact
The safety of net voltage detecting.
In one embodiment, the contactless field coupling sensor may include：Plate electrode type coupling sensing
Device；The plate electrode type coupling sensor may include：
The hermetically sealed shell of insulative water-proof material system 1；
First electrode plate 2 is arranged in the hermetically sealed shell of insulative water-proof material system, is exported with electric field intensity signal
Positive terminal connects；
Second electrode plate 3 is arranged in the hermetically sealed shell of insulative water-proof material system, is exported with electric field intensity signal
Negative pole end connects；
Insulating resin 4 is poured between pole plate, and the first electrode in the hermetically sealed shell of insulative water-proof material system is set
Between plate and second electrode plate.
When it is implemented, the plate electrode type coupling sensor is simple and reliable for structure, volume is light, at low cost, inductive coupling
Accurately.
In one embodiment, the contactless field coupling sensor may include：Micro-electromechanical system (MEMS) formula electricity
Field coupling sensor, in the field distribution homogeneous area inductive coupling electric field intensity signal.
In one embodiment, the contactless field coupling sensor may include：The contactless electric field coupling
Closing sensor includes：Optical fiber type field coupling sensor, the change for detecting the optical signal in the field distribution homogeneous area
Change, according to the variation of the optical signal, output coupling induction field strength signal.
When it is implemented, above-mentioned micro-electromechanical system (MEMS) formula field coupling sensor and optical fiber type field coupling sensor can
To be existing micro-electromechanical system (MEMS) formula field coupling sensor and optical fiber type field coupling sensor.
When it is implemented, contactless field coupling sensor may include：Plate electrode type, MEMS (MEMS)
Formula and optical fiber type.It is defeated that plate electrode type coupling sensor induced voltage between the two-plate in not same electric field carries out signal
Go out；MEMS (MEMS) formulas act on difference to being in not same electric field to internal MEMS devices, export different letters
Number；Optical fiber type exports unlike signal to the variation of the optical signal in not same electric field.
In one embodiment, the number of the contactless field coupling sensor can be three, be separately positioned on
Different field distribution homogeneity ranges around catenary design roof high-tension apparatus, electric locomotive high-tension apparatus or contact net circuit
Domain.The program can comprehensively monitor contact net voltage, improve detection and the efficiency safeguarded, safety, convenience.
In one embodiment, can also include：Memory is connect with the contactless field coupling sensor, is used
Believed according to the electric field strength in the electric field intensity signal for storing contactless field coupling sensor inductive coupling, and storage
Number determining contact net voltage.
When it is implemented, the data of above-mentioned storage can in order to follow-up maintenance equipment or carry out big data analysis when use,
Improve the convenience safeguarded with contact net failure predication.
Inventor considers to improve electric insulation security performance, reduces plant maintenance work, it is proposed that following equipment
Scaling method：
As shown in figure 3, in laboratory or equipment erecting bed, contactless field coupling sensor and contact net etc. are simulated
The mutual installation site of high-tension apparatus loads different brackets voltage by step-up transformer, is sensed to contactless field coupling
Device output signal is demarcated, and the calibration relationship for being tested voltage and output signal is formed.In addition to determination in multiple calibration process
Except the relationship of electric field intensity signal and voltage, while the contactless field coupling sensor can be made more accurate, it is practical
, can be with the more accurate electric field intensity signal of inductive coupling after, and then improve the accuracy that contact net voltage determines.
Above method measures catenary design roof apparatus, EMU using contactless field coupling sensor
The voltage of (electric locomotive) high-tension apparatus, contact net, it is proposed that equipment calibration method improves electric insulation security performance, subtracts
Lack plant maintenance work, is conducive to the efficiency for improving the detection of China's electrification railway contact net and safeguarding.
By the way that under different electric field strengths, contactless field coupling sensor output signal obtains the electricity of high-voltage charged body
Pressure, method are as follows：
In laboratory or equipment erecting bed, the high-tension apparatuses such as contactless field coupling sensor and contact net are simulated
Mutual installation site loads different brackets voltage, to contactless field coupling sensor output signal by step-up transformer
It is demarcated, forms the relationship for being tested voltage and output signal.
The advantageous effects of technical solution that the utility model is implemented to provide are：The contact net voltage of the utility model is non-
Contact measurement method and apparatus, using field coupling principle, using contactless field coupling sensor, electric insulation safety
Height, frequency response is wide, and device volume is small, light-weight, provides a kind of reliable technological means for the measurement of contact net voltage, carries
Power supply unit detection and the efficiency safeguarded, safety, convenience are risen.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, the utility model embodiment can have various modifications and variations.All spirit in the utility model
Within principle, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (8)
1. a kind of contact net voltage non-contact type measuring device, which is characterized in that including：
Contactless field coupling sensor, setting catenary design roof high-tension apparatus, electric locomotive high-tension apparatus or
Field distribution homogeneous area around contact net circuit, for believing in the field distribution homogeneous area inductive coupling electric field strength
Number；
Display device is connect with the contactless field coupling sensor, for receiving contactless field coupling sensor
The electric field intensity signal of inductive coupling shows the contact net voltage determined according to the electric field intensity signal.
2. contact net voltage non-contact type measuring device as described in claim 1, which is characterized in that the contactless electric field
Coupling sensor includes：Plate electrode type coupling sensor；The plate electrode type coupling sensor includes：
The hermetically sealed shell of insulative water-proof material system；
First electrode plate is arranged in the hermetically sealed shell of insulative water-proof material system, with electric field intensity signal output cathode
End connection；
Second electrode plate is arranged in the hermetically sealed shell of insulative water-proof material system, with electric field intensity signal output negative pole
End connection；
Insulating resin is poured between pole plate, and the first electrode plate in the hermetically sealed shell of insulative water-proof material system and are set
Between two electrode plates.
3. contact net voltage non-contact type measuring device as described in claim 1, which is characterized in that the contactless electric field
Coupling sensor includes：Micro-electromechanical system (MEMS) formula field coupling sensor, for being coupled in the field distribution homogeneous area
Induction field strength signal.
4. contact net voltage non-contact type measuring device as described in claim 1, which is characterized in that the contactless electric field
Coupling sensor includes：Optical fiber type field coupling sensor, for detecting the optical signal in the field distribution homogeneous area
Variation exports electric field intensity signal according to the variation of the optical signal.
5. contact net voltage non-contact type measuring device as described in claim 1, which is characterized in that the contactless electric field
The distance between coupling sensor and catenary design roof high-tension apparatus, electric locomotive high-tension apparatus or contact net circuit are
It is determined according to voltage class, height above sea level factor residing for high-tension apparatus or contact net circuit.
6. contact net voltage non-contact type measuring device as described in claim 1, which is characterized in that the field distribution includes
AC field is distributed and DC electric field distribution.
7. contact net voltage non-contact type measuring device as described in claim 1, which is characterized in that further include：Memory, with
The contactless field coupling sensor connection, the electric-field strength for storing contactless field coupling sensor inductive coupling
Signal is spent, and the contact net voltage that storage is determined according to the electric field intensity signal.
8. contact net voltage non-contact type measuring device as described in claim 1, which is characterized in that the contactless electric field
The number of coupling sensor be three, be separately positioned on catenary design roof high-tension apparatus, electric locomotive high-tension apparatus or
Field distribution homogeneous area around contact net circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820384296.5U CN207908574U (en) | 2018-03-21 | 2018-03-21 | Contact net voltage non-contact type measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820384296.5U CN207908574U (en) | 2018-03-21 | 2018-03-21 | Contact net voltage non-contact type measuring device |
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| CN207908574U true CN207908574U (en) | 2018-09-25 |
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| CN201820384296.5U Active CN207908574U (en) | 2018-03-21 | 2018-03-21 | Contact net voltage non-contact type measuring device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108362928A (en) * | 2018-03-21 | 2018-08-03 | 中国铁道科学研究院 | Contact net voltage non-contact type measuring device and method |
| CN113848367A (en) * | 2021-09-22 | 2021-12-28 | 温州大学乐清工业研究院 | Self-adaptive dynamic compensation method and device for non-contact voltage measurement |
-
2018
- 2018-03-21 CN CN201820384296.5U patent/CN207908574U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108362928A (en) * | 2018-03-21 | 2018-08-03 | 中国铁道科学研究院 | Contact net voltage non-contact type measuring device and method |
| CN113848367A (en) * | 2021-09-22 | 2021-12-28 | 温州大学乐清工业研究院 | Self-adaptive dynamic compensation method and device for non-contact voltage measurement |
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