CN207557159U - A kind of transmission pressure icing type automatic identification equipment - Google Patents
A kind of transmission pressure icing type automatic identification equipment Download PDFInfo
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- CN207557159U CN207557159U CN201721052860.5U CN201721052860U CN207557159U CN 207557159 U CN207557159 U CN 207557159U CN 201721052860 U CN201721052860 U CN 201721052860U CN 207557159 U CN207557159 U CN 207557159U
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- capacitor plate
- icing
- conducting wire
- temperature sensor
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Abstract
The utility model discloses a kind of transmission pressure icing type automatic identification equipments, LCR high-acruracy surveys instrument and temperature measuring equipment including being arranged on icing sample both ends, icing sample includes conducting wire, inside conducting wire capacitor plate A and capacitor plate B are disposed with along current direction, a pair of of temperature sensor is provided on conducting wire between capacitor plate A and capacitor plate B, temperature sensor wires are connect across capacitor plate A with temperature measuring equipment, capacitor plate B and capacitor plate A is connect with LCR high-acruracy survey instrument, conducting wire both ends are also connect by shaft coupling with motor, the utility model solves the problems, such as that icing type cannot be distinguished in monitoring transmission line icing in the prior art.
Description
Technical field
The utility model belongs to ice covering on transmission lines field of measuring technique, and in particular to a kind of transmission pressure icing type is automatic
Identification device.
Background technology
Powerline ice-covering can cause the safe operation of power grid extremely serious threat, often result in conductor galloping, arc sag
Decline, short circuit dischange, broken string is stranded, gold utensil damage, the same period does not deice the accidents such as conducting wire jumps and shaft tower collapses, and easily causes
Outdoor power equipment damages, and very harmful to high voltage transmission line, communication line, seriously endangers the safe operation of electric system,
And Frequent Accidents life sometimes due to being influenced by ice and snow weather, can drag slow repairing progress, make extensive in severe winter or season in the early spring
The time powered again is extended, and causes resident living inconvenient, even can cause huge economic loss sometimes.
Powerline ice-covering accumulated snow threatens the safe and reliable operation of electric power and communication network, in decades both at home and abroad always
Influence of the ice trouble to network system is resisted in continuous research and exploration, for air icing formation condition, different type icing machine
Reason and anti-icing and deicing measure are made that a series of further investigations, and formulated in the circuit design phase corresponding design standard and
Specification.However, due to the difference of icing type under the conditions of varying environment, caused harm is also to be not quite similar.According to density
Icing type can be roughly divided into soft rime, hard rime and glaze from low to high；Its harm to power equipment be also with
The increase of density and it is more serious.Wherein, it is caused for different icing classes due to ice crystal structure inside Effects of Density ice sheet
The monitoring of type judges error occur, serious can influence staff and preferably go to carry out anti-icing, de-icing work.It can be seen that
The result for measuring the method for icing sample dielectric constant and obtaining classifies with monitoring with important for coated by ice of overhead power transmission line
Meaning.
Utility model content
The purpose of this utility model is to provide a kind of transmission pressure icing type automatic identification equipment, solves the prior art
Present in the problem of can not quick and precisely distinguishing icing type in monitoring transmission line icing.
The utility model is the technical scheme adopted is that a kind of transmission pressure icing type automatic identification equipment, including setting
Put the LCR high-acruracy surveys instrument and temperature measuring equipment at icing sample both ends, LCR high-acruracy surveys instrument and temperature measuring equipment
Between data processing terminal is also connected with by RS232 connecting lines 4.
The utility model is also characterized by
Icing sample includes conducting wire, is disposed with capacitor plate A and capacitor plate B along current direction inside conducting wire, electricity
Hold and be provided with a pair of of temperature sensor, temperature sensor and temperature sensor wires on the conducting wire between pole plate A and capacitor plate B
Connection, temperature sensor wires are connect across capacitor plate A with temperature measuring equipment, capacitor plate B and LCR high-acruracy survey instrument
Connection, LCR high-acruracy surveys instrument are also connect with capacitor plate A, and conducting wire both ends are also connect by shaft coupling with motor.
Capacitor plate B includes the equipotential ring b, aluminum annulus, dead ring, the equipotential ring a that are followed successively by concentric design, absolutely
Electrode contacts are both provided between edge ring and equipotential ring a and between dead ring and aluminum annulus.
Temperature sensor is patch type PT100 water proof type temperature sensors.
Rubber pad is additionally provided at temperature sensor wires and capacitor plate A link positions, so that junction closely connects.
The beneficial effects of the utility model are a kind of transmission pressure icing type automatic identification equipments, based on icing ice sample
This electrical differences characteristic principle between air using capacitance method to icing sample dielectric constant measurement, acquires icing sample number
According to the relationship between dielectric constant values and icing sample rate being established, according between dielectric constant values and icing sample rate
Relationship fast and accurately judges icing type.
Description of the drawings
Fig. 1 is a kind of structure diagram of transmission pressure icing type automatic identification equipment of the utility model；
Fig. 2 is a kind of transmission pressure icing type automatic identification equipment medium dielectric constant microwave medium measuring unit structure of the utility model
Schematic diagram.
In figure, 1.LCR high-acruracy survey instrument, 2. capacitor plate B, 3. data processing terminals, 4.RS232 connecting lines, 5. temperature
Spend measuring device, 6. conducting wires, 7. capacitor plate A, 8. temperature sensor wires, 9. temperature sensors, 10. icing samples, 11. aluminium
Rounding ring, 12. dead rings, 13. current potential ring a, 14. electrode contacts, 15. shaft couplings, 16. motors, 17. current potential ring b.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawings and detailed description.
A kind of transmission pressure icing type automatic identification equipment of the utility model, structure as shown in Figure 1 and Figure 2, including setting
LCR high-acruracy surveys instrument 1 and temperature measuring equipment 5 at 10 both ends of icing sample, LCR high-acruracy surveys instrument 1 and temperature survey
Data processing terminal 3 is also connected with by RS232 connecting lines 4 between device 5.
Icing sample 10 includes conducting wire 6, is disposed with capacitor plate A7 and capacitor plate along current direction inside conducting wire 6
B2 is provided with a pair of of temperature sensor 9, temperature sensor 9 and temperature on the conducting wire between capacitor plate A7 and capacitor plate B2
Sensor lead 8 connects, and temperature sensor wires 8 are connect across capacitor plate A7 with temperature measuring equipment 5, capacitor plate B2 with
LCR high-acruracy surveys instrument 1 connects, and LCR high-acruracy surveys instrument 1 is also connect with capacitor plate A7, and 6 both ends of conducting wire also pass through shaft coupling
15 connect with motor 16.
Capacitor plate B2 include being followed successively by the equipotential ring b17 of concentric design, aluminum annulus 11, dead ring 12, etc. electricity
Position ring a13, electrode contacts are both provided between dead ring 12 and equipotential ring a13 and between dead ring 12 and aluminum annulus 11
14。
A kind of transmission pressure icing type automatic identification equipment operation principle of the utility model is as follows：
The parameter of step 1, setting LCR high-acruracy surveys instrument 1 makes it apply capacitor plate A7 and capacitor plate B2 different
Frequency parameter；
Step 2, the acquisition of 10 data of icing sample, establish the relationship between 10 density of dielectric constant values and icing sample, have
Body is：
By applying the electric field of some strength, the electric field applied between two capacitor plates between two capacitor plates
Intensity is E=10V, under two-plate electric field distributed area, LCR high-acruracy surveys instrument 1 is adjusted to required frequency, to different volumes
10 dielectric constant of icing sample of score ice-air carries out data acquisition, until ice covering thickness reaches capacitor plate A7 external sources and is
Only, different 10 dielectric permittivities of icing sample are measured, establish relationship between sample dielectric constant and its density：
The relationship of different medium dielectric constant and capacitance can represent as follows：
In above formula, εxDielectric permittivity between expression capacitor plate A7 and capacitor plate B2；
ε0Represent vacuum medium dielectric constant, ε0Value is ε0=8.854*10-12F/m；
A represents the cross-sectional area of capacitor plate A7；
L represents capacitor plate A7 and capacitor plate B2 spacing；
During ice covering thickness rises to equipotential ring a13 by equipotential ring b17, it is different that propagation process is recorded in real time
Density and dielectric constant values under state pass through fitting experimental data density-dielectric constant functional relation；
Relationship between 10 density of step 3, the dielectric constant values obtained according to step 2 and icing sample judges icing class
Type, icing type specifically judge as follows：
When density is between 800~900kg/m3, icing type is glaze type；When density is between 600~800kg/m3
When, icing type is hard rime type；When density is between 300~600kg/m3, icing type is soft rime type；When close
Degree between<300kg/m3, icing type are solidifying white type.
A kind of transmission pressure icing type automatic identification equipment of the utility model can be adjusted in artificial-climate laboratory
Icing meteorologic parameter simulation nature icing operating mode is saved, builds dielectric constant measurement unit first：Pass through capacitor plate internal diameter axis hole
Clearance fit connecting wire 6 and capacitor plate and pass through rubber pad and make its seamless connection；Temperature sensor 9 selects patch type
PT100 water proof type temperature sensors are pasted on 6 surface of conducting wire and pass through 6 surface pore of conducting wire and draw lead.Pass through capacitor plate
Surface pole connection LCR high-acruracy surveys instrument 1 and regulated power supply.After monitoring unit on conducting wire 6 is built, by motor 16
It is connect with the shaft coupling 15 at 6 both ends of conducting wire, and controls 16 low speed uniform rotation of motor.
Aerial condutor is replaced using conducting wire 6 in this experimentation, conducting wire 6 is using diameter 4cm, length 0.8m, thickness 1.5mm
Low temperature resistant PE plastic tubes.Using the capacitor plate A7 on conducting wire 6 and capacitor plate B2 Measuring Dielectric Constants, capacitance pole
Plate A7 and capacitor plate B2 is made of the aluminum annulus of thickness 1mm, internal radius 4cm, outer diameter 10cm.Due in the middle part of capacitor plate
Electric field be evenly distributed, electric field line less parallel lineal layout, and being limited by electrode shape, the electric field line in edge can be from
Exterior space is expanded between pole plate, electric field line can be become opening-like distribution from parallel lines, and this electric field distribution is generally concentrated at
Pole plate edge, therefore capacitor plate B2 peripheral edge portions are equipped with dead ring 12 and current potential ring a13 and eliminate this edge effect and electricity
Draw last breath edge the problems such as the error of experiment is influenced.The connection of capacitor plate and conducting wire 6 be by conducting wire and capacitor plate inner diameter hole-
Shaft clearance, which is connected, to be used, and conducting wire 6 is passed through by capacitor plate internal diameter, and blend rubber pad makes junction closely connect.Capacitance
Spacing is 15cm between pole plate A7 and capacitor plate B2, and the regulated power supply that can form consistent electric field is connected on capacitor plate
And the LCR high-acruracy surveys instrument 1 for monitoring icing sample capacitance variations between capacitor plate.
Since dielectric dissipation factor and dielectric constant have substantial connection with temperature environment residing for medium, to icing sample
10 progress temperature monitorings are necessary.The utility model employs the excellent patch type PT100 temperature of water proofing property, lower temperature resistance and passes
Sensor monitors conductive line surfaces temperature, and patch is distributed between two capacitor plates, is influenced to eliminate experimental error, the same radial direction position of conducting wire
It puts and pastes multigroup temperature sensor patch using the good heat-conducting silicone grease of thermal diffusivity and the average value work for obtaining temperature value will be monitored
Actual temperature for conductive line surfaces.Conductive line surfaces temperature monitoring can be to icing ice shape structure and dielectric constant in different temperatures
Lower carry out quantitative analysis, connecting lead wire is drawn by conductive line surfaces hole, and is connected to temperature measuring equipment 5.
Because the capacitivity that the electrode configuration that the utility model uses measures in air medium also has compared with vacuum medium
There are enough precision, so not further relating to the measurement to vacuum medium capacitivity, only carry out icing sample medium dielectric constant
Experiment measures.
After experiment porch is built, in artificial-climate laboratory, icing meteorologic parameter is adjusted, such as environment temperature, wind
Speed, release drop diameter etc..Due to only have a few materials its dielectric constants just can in very wide frequency range it is substantially permanent
It is fixed, thus must select that the frequency of sample medium is suitble to measure in certain frequency zone.Therefore conductive line surfaces into
While row icing, setting LCR high-acruracy surveys instrument 1 makes it apply different frequency parameter to capacitor plate, selects optimal measurement
Frequency.
Since ice crystal structure different in icing sample can influence its dielectric constant values, and ice-air in icing sample
Structure has relationship with its shared sample volume score, density.Therefore, it is necessary to different volumes in artificial-climate laboratory
The icing sample dielectric constant of score ice-air carries out data acquisition, and monitoring is compared when being used for practical aerial condutor so as to device
Data, and fast and accurately judge icing type.
Because volume fraction values shared by different ice-air can correspond to a dielectric constant accordingly in icing sample
Value.Simultaneously as the difference of the volume fraction in icing medium shared by ice-air, which can directly affect, measures sample rate size,
And its icing type according to sample rate；For this purpose, in artificial-climate laboratory, by adjusting icing meteorologic parameter, change
Become sample volume score shared by ice-air in conductive line surfaces icing sample, at the same time, monitor its dielectric constant values.By not
Change ice and constituent of air ratio disconnectedly, acquire it corresponding to its dielectric constant size, establish dielectric constant values and icing sample
Contact between density.
Therefore, by special dielectric constant measurement unit, different icing sample medium dielectric constants can be measured, establish sample
Relationship between dielectric constant and its density understands its internal ice-constituent of air ratio section by counter push away of the dielectric constant of measurement,
And then its icing type is understood by codomain residing for icing sample rate.
A kind of transmission pressure icing type automatic identification equipment of the utility model, is mainly based upon icing ice crystal and air
Between electrical differences characteristic principle, using capacitance method to icing sample dielectric constant measurement, by adjusting artificial-climate laboratory
Meteorologic parameter prepares icing growth conditions, and devises the special measurement module for measuring icing dielectric permittivity, such as：Electricity
Hold sensor and analog conducting wire etc., fast and accurately judge icing type.
Claims (2)
1. a kind of transmission pressure icing type automatic identification equipment, which is characterized in that including being arranged on icing sample (10) both ends
LCR high-acruracy surveys instrument (1) and temperature measuring equipment (5), between LCR high-acruracy surveys instrument (1) and temperature measuring equipment (5)
Data processing terminal (3) is also connected with by RS232 connecting lines (4), the icing sample (10) includes conducting wire (6), conducting wire (6)
Inside is disposed with capacitor plate A (7) and capacitor plate B (2), capacitor plate A (7) and capacitor plate B (2) along current direction
Between conducting wire on be provided with a pair of of temperature sensor (9), temperature sensor (9) is connect with temperature sensor wires (8), temperature
Sensor lead (8) is connect across capacitor plate A (7) with the temperature measuring equipment (5), capacitor plate B (2) and the LCR
High-acruracy survey instrument (1) connects, and LCR high-acruracy surveys instrument (1) is also connect with capacitor plate A (7), and conducting wire (6) both ends are also
It is connect by shaft coupling (15) with motor (16), equipotential ring b of the capacitor plate B (2) including being followed successively by concentric design
(17), aluminum annulus (11), dead ring (12), equipotential ring a (13), between the dead ring (12) and equipotential ring a (13)
And electrode contacts (14) are both provided between dead ring (12) and aluminum annulus (11), the temperature sensor (9) is patch
Formula PT100 water proof type temperature sensors.
A kind of 2. transmission pressure icing type automatic identification equipment according to claim 1, which is characterized in that the temperature
Rubber pad is additionally provided at sensor lead (8) and capacitor plate A (7) link position, so that junction closely connects.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721052860.5U CN207557159U (en) | 2017-08-22 | 2017-08-22 | A kind of transmission pressure icing type automatic identification equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721052860.5U CN207557159U (en) | 2017-08-22 | 2017-08-22 | A kind of transmission pressure icing type automatic identification equipment |
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| Publication Number | Publication Date |
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| CN207557159U true CN207557159U (en) | 2018-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721052860.5U Active CN207557159U (en) | 2017-08-22 | 2017-08-22 | A kind of transmission pressure icing type automatic identification equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109405881A (en) * | 2018-10-30 | 2019-03-01 | 重庆理工大学 | Device for monitoring icing of electric transmission line based on ice sheet dielectric property and rotated conductors |
-
2017
- 2017-08-22 CN CN201721052860.5U patent/CN207557159U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109405881A (en) * | 2018-10-30 | 2019-03-01 | 重庆理工大学 | Device for monitoring icing of electric transmission line based on ice sheet dielectric property and rotated conductors |
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