CN109283440A - A kind of suction type simulation test analysis platform that environmental condition is controllable - Google Patents
A kind of suction type simulation test analysis platform that environmental condition is controllable Download PDFInfo
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- CN109283440A CN109283440A CN201811088142.2A CN201811088142A CN109283440A CN 109283440 A CN109283440 A CN 109283440A CN 201811088142 A CN201811088142 A CN 201811088142A CN 109283440 A CN109283440 A CN 109283440A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1272—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements
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Abstract
The present invention discloses a kind of suction type simulation test analysis platform that environmental condition is controllable, wherein the system includes: simulator for simulating varying environment condition and the device for testing and analyzing for monitoring measured conductor sample under the conditions of different simulated environments；The simulator includes: combustion chamber, negative pressure settling chamber and control assembly；The device for testing and analyzing includes: environmental parameter measurement device, monitoring device and Data Analysis Platform.By implementing the scheme of present disclosure, realize that simulated environment is controllable, and test and analyze to conductive line surfaces pattern, electric precipitation and the corona discharge situation under different simulated conditions.
Description
Technical field
The present invention relates to conveying electro-technical field, in particular to a kind of suction type simulation test that environmental condition is controllable analysis
Platform.
Background technique
In recent years, atmosphere pollution is more serious, and transmission line of electricity is in During Process of Long-term Operation, directly by atmospheric environment
It influences.When ultra-high-tension power transmission line is chronically exposed in the atmospheric environment for having airborne particle object, particulate matter can be attached to conducting wire
Surface forms contamination, changes conductive line surfaces characteristic, and then influence the corona characteristic of conducting wire, so that the electromagnetic environment of transmission line of electricity is more
For complexity.
With the aggravation of the severe degree of environment, the filthy particulate matter in environment is attached to conductive line surfaces, causes bloom electric
The problems such as drops, corona loss increase, but also jeopardized the safe operation of transmission line of electricity.Therefore, to deposited particles object
The analysis test in terms of the corona effect of conducting wire and follow-up study are paid more and more attention afterwards, which mainly includes particle produce
Raw, particulate matter transmission, particulate matter accumulation in closed container (closed container is placed with electrode), then carry out correlative measurement in container
Sample progress follow-up study is taken out in examination.In general, the dependence test carried out refers to leading about after deposited particles object
Test in terms of the corona effect of line, it is main to test corona discharge starting voltage, the total electric field at cage body, the ion at cage body
The corona current pulse that current density and corona discharge generate.Subsequent research refers to that the wire samples to deposited particles object are carried out
Surface topography electronic scanner microscope observation and the energy spectrum analysis of surface composition, the application also will do it these researchs.
Currently, learning have three classes platform in the industry by a large amount of investigation according to present inventor:
1, first kind platform
Particulate matter is generated by aerosol generator system, realizes particulate matter from pipeline transportation to test by external gas cylinder
In tube seat.
But the inventor of the present application discovered that this scheme is since the particle object amount that aerosol generator generates is too small, so
In order to keep a certain concentration to lead to the small volume of closed container, and lesser closed container its size (especially high-field electrode
To the distance of four wall of container) design of the electric insulation that is not able to satisfy under high voltage, in particular to it is not able to satisfy the anti-of the air gap
Breakdown design, be easy test voltage not enough when, lead to the breakdown of electrode Yu four wall the air gap of container, so can not be into
Total electric field at dependence test under row high voltage, mainly test corona discharge starting voltage, cage body, the ion at cage body
The corona current pulse that current density and corona discharge generate.
2, the second class platform
Particulate matter is generated by burning or atomizer, is sprayed onto biggish closed container by pipeline and carries out correlative measurement
Examination；However, this kind of scheme is in order to meet electric insulation design, container volume is all larger, is easy to cause the particulate matter in container dense
Degree and uniformity coefficient are difficult to control and adjust, and due to needing through present apparatus quantitative analysis when particle is uniformly distributed,
The concentration of grain object (mainly includes corona inception voltage, total electric field, ion current density and corona for conductor corona flash-over characteristic
Electric current), so if the uniformity coefficient of container endoparticle object cannot be controlled well and quantitatively adjust concentration, it may be difficult to after progress
Continuous quantitative analysis.
In addition, present inventor also found that the first kind and the second class scheme all have a problem that: generation of discharging
Free charge can be accumulated in four walls of closed container, thus will will cause the error of corona discharge effect test, error here
Mainly cause corona to interfere field distribution original in container since the charge of four walls accumulation can generate an electric field
The error of feature measurement.In this regard, the design avoids the influence of stored charge using two ways, one is passive using corona cage
Shielding, the second is increasing anti-static coating in settling chamber Si Bi.
3, third class platform
By airslide disintegrating mill as particulate matter generation device, then it is diffused into a biggish climatic chamber and is tested；
However, this kind of scheme is using airslide disintegrating mill and biggish climatic chamber, the volume of both experimental facilities is all excessive, unfavorable
In the convenience of experiment and test expansion, and do not have mobility, and since the price of airslide disintegrating mill is substantially all ten thousand
More than member, so its use cost is also more expensive.
Meanwhile present inventor is largely investigated it is also found that: three of the above conceptual design not can control particle
Partial size, and the test in terms of this corona effect to conducting wire after deposited particles object is particularly significant.
Summary of the invention
In view of this, in order to solve the above technical problems, the embodiment of the present invention proposes a kind of suction type that environmental condition is controllable
Simulation test analysis platform, can be realized that simulated environment is controllable, and to conductive line surfaces pattern, the electric precipitation under different simulated conditions
And corona discharge situation is tested and analyzed.
In order to solve the above technical problems, the embodiment of the present invention discloses following some technical solutions, comprising:
In one embodiment of this invention, a kind of suction type simulation test analysis platform that environmental condition is controllable is disclosed, it should
Platform includes: simulator for simulating varying environment condition and for monitoring measured conductor sample under the conditions of different simulated environments
The device for testing and analyzing of product；Wherein:
A) simulator includes:
Combustion chamber, for manufacturing the pollutant of simulated environment；
Negative pressure settling chamber, the measured conductor sample for being built-in with segmented corona cage and being set in the corona cage；Institute
Negative pressure settling chamber is stated for introducing using principle of negative pressure by the pollutant of simulated environment and depositing it on measured wire sample；
Control assembly is arranged in the communicating passage of the combustion chamber and the settling chamber, for controling and monitoring simulation
The size and flow of pollutant；
B) device for testing and analyzing includes:
Environmental parameter measurement device is connect with the settling chamber, for measuring the environmental parameter of the deposition indoor simulation；
Monitoring device, for monitoring the related data of the conductor sample topography data and its corona discharge effect；
Data Analysis Platform is analyzed for the related data to corona discharge effect, and exports analysis result.
In an alternative embodiment, the monitoring device further comprises:
Nanovoltmeter is provided with ion flowing plate, and the ion flowing plate is set to the outside of the corona cage, for measuring ion
Current density；
Field mill is provided with field mill probe, and the field mill, which is popped one's head in, is set to the outside of the corona cage, for measuring synthesis electricity
?；
High voltage power supply is powered for tested conductor sample；
Corona current measurement mechanism is connect with the measured conductor sample, for measuring the electricity of the measured conductor sample
Corona current data.
As an alternative embodiment, the corona current measurement mechanism further comprises:
Capacitor is measured, is connect with the measured conductor sample, for dividing；
Sampling resistor, with the measurement capacitance connection, the corona current signal for generating corona discharge is converted into electricity
Press signal；
Capture card is connect with the measurement capacitor and the sampling resistor respectively, for measuring the measured conductor sample
The corona current data and reception voltage signal of generation.
Optionally, it is based on any of the above-described embodiment, the Data Analysis Platform includes:
Corona identification module, a variety of effects of the corona discharge for being obtained according to the data measurement unit measurement, sentences
It is fixed whether corona discharge to occur；
Corona analysis module, for when determining to occur corona discharge, the pulse according to the corona current monitored to be strong
Degree and frequency define corona discharge intensity, realize detection and analysis for discharge effect under different condition；
Surface state analysis module, for the corresponding conductor sample topography number of different corona discharge data according to acquisition
According to establishing the corresponding relationship of the corona discharge intensity Yu the wire samples surface topography state, analysis obtains conductive surface
Influence of the contamination for corona current pulse.
Optionally, it is based on any of the above-described embodiment, is coated with anti-static coating, wall body on the inner wall of the negative pressure settling chamber
On open up product have peep hole, the external ultraviolet-cameras of the peep hole or high-speed CCD (charge-coupled device) camera, for observing
Deposit indoor corona discharge and particle deposition.
Optionally, it is based on any of the above-described embodiment, the negative pressure settling chamber is true configured with the pumping for being used to form indoor negative pressure
Empty device, so that the combustion chamber simulates the particulate matter air-flow come and enters in settling chamber under the guidance of negative pressure；The deposition
Room is provided with side door, and the high voltage power supply is arranged in side door door body and connect with the measured conductor sample.
Optionally, it is based on any of the above-described embodiment, the measured conductor sample is located at the central axis of the corona cage；Institute
The both ends for stating measured conductor sample are provided with shielding ball, and the shielding ball is connected to insulating bar, and the insulating bar is fixedly connected on
The inner wall of the settling chamber.
Optionally, it is based on any of the above-described embodiment, the environmental parameter measurement device includes:
Concentration meter is set on the outside of the settling chamber, for measuring the pollutant concentration of the deposition chamber interior；
Air gauge is set on the outside of the settling chamber, for measuring the air pressure of the deposition chamber interior；
Hygrothermograph is set on the outside of the settling chamber, for measuring the temperature and humidity of the deposition chamber interior.
Optionally, it is based on any of the above-described embodiment, the control assembly further comprises:
Valve is arranged in the communicating passage of the combustion chamber and the settling chamber, for controlling opening for passage of contaminants
It closes；
Partial size filter is arranged and leads to inlet in pollutant, is passed through the indoor particle of the negative pressure deposition for controlling
Diameter；
Sillometer is arranged in the communicating passage of the combustion chamber and the negative pressure settling chamber, for measuring the pollution
The flow of object.
Optionally, be based on any of the above-described embodiment, the combustion chamber further comprises: the first combustion chamber of mounted on top and
Second combustion chamber；
First, second combustion chamber passes through the first, second communicating passage respectively and is connected to the settling chamber；
It is provided with the first valve, the first partial size filter and the first sillometer in first communicating passage, described second
The second valve, the second partial size filter and the second sillometer are provided in communicating passage.
Optionally, it is based on any of the above-described embodiment, the controllable suction type simulation test analysis platform of environmental condition can also wrap
It includes:
Water cooled pipeline is set on the outside of the communicating passage of the combustion chamber and the settling chamber, and in the water-cooling channel
Water (flow) direction and the communicating passage gas flow reverse setting, with for reducing simulating pollution object flue-gas temperature and
Influence of the heat release of the combustion chamber to simulation test.
Compared with the existing technology, the technical solution that the embodiment of the present invention discloses has the advantage that
After adopting the technical scheme of the embodiment of the present invention, using modeling and analyzing, the electricity of concentric cylinder is mainly established
Pole model, in conjunction with principle of negative pressure, design can be realized simulated environment condition and the controllable simulator of contamination deposition process and
Analytical equipment, the convenience not only operated and mobility, but also the integrated of corona discharge characteristic test is also achieved, favorably
In a variety of effects for easily testing corona discharge using a set of equipment, realize detection for discharge effect under different condition with
Analysis.
Therefore, the sunykatuib analysis test macro that the embodiment of the present invention discloses not only can detecte different haze concentration levels
Under, conductor corona electric discharge is strong and weak, in the case of variable grain object concentration and Different electrodes construction can also be detected, electric precipitation effect
Rate, and the wire samples under different condition are obtained, and then obtain conductive line surfaces state status.
More features and advantages of the embodiment of the present invention will be explained in specific embodiment later.
Detailed description of the invention
The attached drawing for constituting a part of the embodiment of the present invention is used to provide to further understand the embodiment of the present invention, the present invention
Illustrative embodiments and their description be used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is a kind of composition for the suction type simulation test analysis platform that environmental condition is controllable provided in an embodiment of the present invention
Schematic diagram；
Fig. 2 is the group of the controllable suction type simulation test analysis platform of another environmental condition provided in an embodiment of the present invention
At schematic diagram；
Fig. 3 is a kind of data monitoring for the suction type simulation test analysis platform that environmental condition is controllable in the embodiment of the present invention
Process schematic；
Fig. 4 is that the corresponding relationship of input with the output of a kind of data monitoring object disclosed in the embodiment of the present invention is illustrated
Figure；
Fig. 5 is a kind of data analysis process schematic diagram disclosed in the embodiment of the present invention；
Fig. 6 is segmented corona cage in the controllable suction type simulation test analysis platform of the environmental condition of the embodiment of the present invention
Cross-sectional view；And
Fig. 7 is segmented corona cage in the controllable suction type simulation test analysis platform of the environmental condition of the embodiment of the present invention
Longitudinal cross section schematic.
Description of symbols
100 combustion chambers
The first combustion chamber 100a
The second combustion chamber 100b
101 combustion chamber side doors
The first combustion chamber 101a side door
The second combustion chamber 101b side door
102 communicating passages
The first communicating passage of 102a
The second communicating passage of 102b
The first sillometer of 103a
The second sillometer of 103b
The first valve of 104a
The second valve of 104b
200 settling chambers
201 segmented corona cages
202 vacuum evacuation devices
203 nanovoltmeters
204 mills
205 settling chamber's side doors
206 peep holes
207 hygrothermographs
208 air gauges
209 concentration meters
210 high voltage power supplies
211 corona cage brackets
212 conductor samples
213 ion flowing plates
214 mill probes
215 shielding balls
216 insulating bars
300 device for testing and analyzing
301 measurement capacitors
302 sampling resistors
303 capture cards
304 Data Analysis Platforms
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
It should be noted that in the absence of conflict, the feature in the embodiment of the present invention and embodiment can be mutual group
It closes.
With reference to the accompanying drawing, various embodiments of the present invention are described further:
The present invention designs a kind of suction type simulation test analysis platform that environmental condition is controllable, controllable for environmental condition
Particulate matter accumulation simulation, carries out corona discharge test, and below with reference to embodiment, controllable to environmental condition proposed by the present invention is negative
Pressure type simulation test analysis platform is described further:
The controllable suction type simulation test analysis platform of the environmental condition includes: the simulation for simulating varying environment condition
Device and device for testing and analyzing for monitoring measured conductor sample under the conditions of different simulated environments.
In the present embodiment, as shown in Figure 1, above-mentioned simulator further comprises: combustion chamber 100, negative pressure settling chamber 200 and
Control assembly, in which: combustion chamber 100 is used to manufacture the pollutant of simulated environment, and negative pressure settling chamber 200 is built-in with segmented corona
Cage 201 and the measured conductor sample 212 being set in corona cage 201.Negative pressure settling chamber 200 is used to utilize principle of negative pressure, will
The pollutant of simulated environment introduces, and deposits it on measured wire sample 212.Control assembly setting combustion chamber 100 with
In the communicating passage 102 of negative pressure settling chamber 200, for controling and monitoring the size and flow of simulated environment particulate pollutant.
In the present embodiment, as shown in Figure 1, above-mentioned device for testing and analyzing 300 further comprises: environmental parameter measurement device,
Monitoring device and Data Analysis Platform.Wherein: environmental parameter measurement device is connect with negative pressure settling chamber 200, for measuring deposition
The environmental parameter simulated in room 200.Monitoring device is used to monitor the phase of 212 topographic data of conductor sample and its corona discharge effect
Close data.Data Analysis Platform exports analysis result for analyzing the related data of corona discharge effect.
In the present embodiment, the controllable suction type simulation test analysis platform of environmental condition is for studying different simulated environments pair
The synthesis electricity, it can be achieved that under test varying environment condition and structure is influenced in surface deposited particles object conductor corona flash-over characteristic
Field, ion current density, corona current, concentration variation and surface state adjust for different demands and adapt to different tests pair
As.
As an alternative embodiment, as shown in Fig. 2, the monitoring device in above-described embodiment further comprises: receiving
Lie prostrate table 203 and ion flowing plate 213, field mill 204 and its probe 214, corona current measurement mechanism and high voltage power supply 210, in which: receive
Volt table 203 is provided with ion flowing plate 213, and ion flowing plate 213 is set to the outside of corona cage 201, for measuring ion current density.
Mill 204 is provided with field mill probe 214, the outside that field mill probe 214 is set to segmented corona cage 201, for measuring synthesis
Electric field.High voltage power supply 210 is that tested conductor sample 212 is powered, and by the way of cable introducing, and utilizes the exhausted of high-tension cable
Edge layer realizes the purpose of insulation, thus when avoiding high pressure introducing a small space for needing good air-tightness, easily in interface
Nearby cause the problem of discharging, even resulting in breakdown.Corona current measurement mechanism is connect with measured conductor sample 212, for surveying
Measure the corona current data of measured conductor sample 212.
It should be noted that corona current measurement mechanism can be changed to high-voltage end measurement, to improve measurement accuracy, such as:
By cancelling derided capacitors, measuring device placement is directly connect with conducting wire, and measurement is partially disposed in faraday cup, led to
The electric light converter and photoelectric converter transmission measurement data for crossing optical fiber connection are to computer, to realize that high-voltage end measures, such as
This, eliminates interference of the derided capacitors for current signal, and then improve measurement accuracy.
In addition, the present embodiment has carried out the design of electric high-voltage insulation for settling chamber and the plant bulk of corona cage,
For example, the radial dimension that the corona cage of the present embodiment uses, it is ensured that in the case where highest applies voltage effect, air gap does not occur and hits
It wears；For another example, the protection segment length that the present embodiment uses can make the distortion effects of Analysis of End Electric Field minimum.
As an alternative embodiment, as shown in Fig. 2, the corona current measurement mechanism in above-described embodiment is further
It include: measurement capacitor 301, sampling resistor 302 and capture card 303, in which:
Measurement capacitor 301 is connect with measured conductor sample 212, for dividing, provides suitable voltage for measuring section equipment；
Sampling resistor 302 is connect with measurement capacitor 301, for current signal to be converted into voltage signal, is convenient for capture card
Acquire data；
Capture card 303 is connect with measurement capacitor 301 and sampling resistor 302 respectively, is produced for measuring measured conductor sample 212
Raw corona current data and reception voltage signal.
Here, example is carried out to the course of work that the simulation test in above-described embodiment is analyzed in conjunction with Fig. 3 and following examples
Illustrate:
S1: closing settling chamber, closing combustion chamber and the valve in settling chamber's communicating passage, cutting combustion chamber and settling chamber
Connection；
S2: negative pressure device is taken out in starting, takes out negative pressure to settling chamber, can be adjusted by the heater configured and deposit indoor temperature
Degree；
S3: combustion chamber internal combustion combusts perfume (or spice), generates particulate matter；
S4: the valve in combustion chamber and settling chamber's communicating passage is opened, is passed through particulate matter to settling chamber；
S5: particulate matter is waited to diffuse to the particulate matter accumulation for uniformly completing certain time.
S6: measuring relevant corona discharge characteristic by monitoring device, such as total electric field, ion current density and corona electricity
Stream is analyzed by the data that Data Analysis Platform obtains measurement, obtains corresponding simulated environment for surface deposited particles
The influence of object conductor corona flash-over characteristic.
As an alternative embodiment, the Data Analysis Platform in above-described embodiment further comprises: corona identification
Module, corona analysis module and surface state analysis module, in which: corona identification module according to data measurement unit for measuring
A variety of effects of obtained corona discharge, determine whether that corona discharge occurs.Corona analysis module is used to determine that corona occurs
When electric discharge, according to the pulse strength and frequency of the corona current monitored, corona discharge intensity is defined, is realized for different items
The detection and analysis of discharge effect under part.Surface state analysis module is used for corresponding according to the different corona discharge data of acquisition
Conductor sample topography data, establish the corresponding relationship of corona discharge intensity Yu wire samples surface topography state, and analysis is led
Influence of the body surface area dirt to corona current pulse.
Here, in conjunction with shown in Fig. 4 and Fig. 5, the suction type simulation test analysis controllable to above-described embodiment environmental condition is flat
The data analysis process of platform is described as follows:
In above-described embodiment, Data Analysis Platform master data to be processed are the current signal on sampling resistor.The electric current
Signal derives from conducting wire corona current as caused by corona discharge, it is a kind of through conducting wire, conducting wire the air gap over the ground with
The electric current for the circuit flowing that the earth is constituted.The present embodiment designs a kind of integrated portable device of corona discharge characteristic test,
Main corona characteristic test content, including the measurement of total electric field, ion current density, corona current, relevant interface is with wiring
The mode of plug is fixed on the wall surface of device, and relevant measuring device includes that electrical field test instrument, nanovoltmeter etc. are fixedly mounted
In a device, so realize it is integrated with it is convenient, be conducive to test corona discharge a variety of effects, realization under different condition
The detection and analysis of discharge effect.
In the present embodiment, by monitoring this electric current and carry out data processing, following target can achieve:
1) by monitoring whether corona current pulse occur, determine whether that corona discharge occurs, due to before and after corona discharge,
Particulate matter is different in the situation of gathering of conductive line surfaces, therefore whether can detecting that strong occur corona discharge, alignment
Really being associated between analysis conductive surface contamination and corona current pulse is very important.
2) after detecting and corona current pulse occur, can be according to corona current pulse strength and frequency the case where,
Quantitative intensity for defining corona discharge, such as " weakness " corona, moderate corona, serious corona etc. are put to obtain different coronas
Contamination wire samples under electric strength, connection corona discharge intensity and conductive line surfaces pattern.
3) simultaneously, can also be by analysis corona current pulse strength and frequency the case where, to study contamination to corona current
The influence of this corona discharge effect of pulse.
Herein, in conjunction with following scene, the controllable suction type simulation test of environmental condition disclosed in above-described embodiment point
Platform is analysed, the exemplary illustration of concrete application is carried out:
1) the suction type simulation test analysis platform controllable using the environmental condition of above-described embodiment, can study certain of simulation
A little influences of the environmental condition (such as certain temperature and humidity) to conductor corona characteristic under the conditions of particulate matter: by adjusting in settling chamber
Temperature humidity, be passed through certain density particulate matter, then detect conductor corona flash-over characteristic.
2) certain of simulation can be studied using the controllable suction type simulation test analysis platform of the environmental condition of above-described embodiment
The shadow for the corona characteristic that a little environmental conditions (such as certain temperature and humidity) discharge to pin electrode in needle plate electrode under the conditions of particulate matter
It rings: depositing indoor temperature humidity by adjusting, be passed through certain density particulate matter, it is special then to detect pin electrode corona discharge
Property, which is further described below: according to the electrode type in electrode structure more changing device, therefore, here first by needle
Plate electrode changes in device；The object studied as needed, such as the influence of temperature are adjusted by heater or dry ice
Temperature temperature to required for testing in device；Then it is passed through particulate matter, adjusts particle concentration；Then in Current Temperatures
Under, measure every corona discharge characteristic in needle plate electrode, including total electric field, ion current density, corona current；Re-adjustments
Temperature and particle concentration, duplicate measurements finally obtain the change of every corona discharge characteristic temperature under variable grain object concentration
Change situation, obtains final affecting laws.
3) influence of the research environment condition (temperature and humidity) for contamination insulator chain polluting property under the conditions of particulate matter:
Indoor temperature humidity is deposited by adjusting, certain density particulate matter is passed through, then detects polluting property.
4) influence of the research environment condition (temperature and humidity) for conductor corona characteristic under the conditions of particulate matter: pass through adjusting
Indoor temperature humidity is deposited, certain density particulate matter is passed through, then detects conductor corona flash-over characteristic.
5) it studies under different voltages, how particulate matter deposition changes conductive line surfaces pattern: it is with voltage by adjusting conducting wire institute,
Be passed through certain density particulate matter, carry out particulate matter sedimentation experiment, then take out wire samples, by electronic scanner microscope into
The observation of row surface topography obtains observed result and compares with clean conducting wire.
6) under the conditions of research varying environment (temperature and humidity), how particulate matter deposition changes conductive line surfaces pattern: passing through
It adjusts and deposits indoor temperature and humidity, be passed through certain density particulate matter, carry out particulate matter sedimentation experiment, then take out conducting wire sample
This, the observation of surface topography is carried out by electronic scanner microscope, is obtained observed result and is compared with clean conducting wire.
Therefore, the suction type simulation test analysis platform controllable using the environmental condition in above-described embodiment, can realize:
1) it under different haze weathers, detects under different haze concentration levels, it is strong and weak by detection conductor corona electric discharge, point
Analyse conductor corona flash-over characteristic；
2) in the case of to variable grain object concentration and Different electrodes construction, dust collection efficiency, effect are detected；For present
Popular electric precipitation structure, parallel lines electrod-array, by by the electrode in device be changed to three conducting wire structures arranged side by side (or
Person is more), it is passed through a certain amount of particulate matter, measures preliminary examination concentration, conducting wire electrification is then made concurrently to give birth to corona discharge, to a timing
Between after, the concentration after measuring, according to the variation of front and back concentration, to obtain the efficiency of electric precipitation.
3) wire samples under different condition are obtained, change and detect conductive line surfaces state, and then are obtained under different condition
Conductive line surfaces state status.
Since measurement error is mainly the electric field that the charge accumulated due to chamber walls is generated, can interfere original in container
Field distribution, thus cause corona characteristic measure error.In this regard, the shadow that two ways avoids stored charge can be used: its
One, it is using corona cage passive screening, the second is increasing anti-static coating in settling chamber Si Bi.
As an alternative embodiment, being coated with antistatic on the inner wall of negative pressure settling chamber 200 in above-described embodiment
Coating, in the device of the present embodiment, due to a possibility that there is electric discharges so can have a large amount of space charge in space,
Under the action of electric field, these charges meeting travel motion is accumulated in four wall of device to four wall of device.But once occur
Such charge accumulated, by the great field distribution situation changed in device, this is because stored charge can equally generate sky
Between electric field, this electric field will be superimposed with original electric field, to influence the accuracy of correlation measurements.It is anti-by introducing
Electrostatic coating can effectively reduce the accumulation of charge because the electric conductivity of coating can quickly will build up on charge and import the earth,
So that measurement result is more accurate.
Optionally, in above-described embodiment, corona cage is provided with corona cage.Traditional corona cage without shield segment,
Serious electric field distortion can occur for its both ends, and such distortion can bring very big error to the result of intermediate measuring section, prevent
Protect section use can electric field distortion that is effectively smooth and inhibiting both ends, reduce this distortion for the shadow of intermediate measuring section
It rings, so that measurement result is more accurate.Therefore, by using corona cage and anti-static coating with shield segment, maskable container
Influence of the electric field that four wall stored charges generate to electric field is generated by conducting wire, the charge for preventing chamber walls from accumulating is to output quantity
The influence of test.
In an alternative embodiment, product is opened up on the wall body of settling chamber a peep hole 206, external ultraviolet of peep hole 206
Camera or high-speed CCD (charge-coupled device, Charge Coupled Device) camera, for observing the electricity in settling chamber 200
Corona and particle deposition.
As an alternative embodiment, negative pressure settling chamber 200 is indoor negative configured with being used to form in above-described embodiment
The vacuum evacuation device 202 of pressure, so that combustion chamber 100 simulates the particulate matter air-flow come and enters settling chamber under the guidance of negative pressure
In 200.In the present embodiment, in order to solve the problems, such as pellet transportation, i.e., the indoor particulate matter that how will burn is transferred in settling chamber,
The present embodiment is initially switched off the connection of combustion chamber and settling chamber by the way of taking out negative pressure, pressure is evacuated in settling chamber, causes to fire
The air pressure for burning room is higher than settling chamber, then connection combustion chamber and settling chamber, achievees the purpose that particulate matter is propagated along draught head.Cause
This, the present embodiment realizes that particulate matter drains by using the mode for taking out negative pressure, not only increases the convenience of practical operation, may be used also
External gas cylinder guidance particle stream is avoided, the structure of device is simplified.In addition, this mode does not need external gas cylinder, dress is improved
The terseness of the safety and structure set.
It optionally, can be by the wall thickness of increase settling chamber 200, to realize lower negative pressure, and then convenient for guidance
Particle accelerates flow velocity.
Here, it should be noted that for the safety of negative pressure ventilation, the present embodiment according to the size of combustion chamber about
It is evacuated air pressure, and has carried out safety analysis in the design process, is illustrated below:
For the device that the present embodiment discloses, maximum sucking rate is 100 volume of combustion chamber, heavy from negative pressure by calculating
The comparable air of volume with combustion chamber 100 is extracted in product room 200, and the air pressure in negative pressure settling chamber 200 is reduced to 10% mark
Quasi- atmospheric pressure.Meanwhile in the device of actual fabrication the present embodiment, the thickness of four walls can reach 2cm, and each wall surface all
Equipped with reinforcing rib, additional support is provided, 10% standard atmospheric pressure bring pressure can be born completely.
In an optional embodiment, settling chamber 200 is provided with settling chamber's side door 205, and high voltage power supply 210 can be arranged in side
Door 205 is arranged, and connect with measured conductor sample 212.
As an alternative embodiment, measured conductor sample 212 is located in corona cage 201 in above-described embodiment
Mandrel line；The both ends of measured conductor sample 212 are provided with shielding ball 215, and shielding ball 215 is connected to insulating bar 216, insulating bar
216 are fixedly connected on the inner wall of settling chamber 200.
As an alternative embodiment, environmental parameter measurement device includes: hygrothermograph 207, gas in above-described embodiment
Press table 208 and concentration meter 209, in which: hygrothermograph 207 is set to 200 outside of settling chamber, for measuring inside settling chamber 200
Temperature and humidity, air gauge 208 are set to 200 outside of settling chamber, and for measuring the air pressure of deposition chamber interior, concentration meter 209 is set
It is placed in 200 outside of settling chamber, for measuring the pollutant concentration inside settling chamber 200.It should be noted that the present embodiment can lead to
The data of adjustment measurement port are crossed, increases the quantity of test device, and/or is mounted on different location, to obtain more data, are mentioned
The accuracy of high data.
As an alternative embodiment, control assembly further comprises in above-described embodiment: valve, partial size filtering
Device and sillometer, in which: valve is arranged in the communicating passage 102 of combustion chamber 100 and settling chamber 200, for controlling pollutant
The switch in channel.Partial size filter, which is arranged, leads to inlet in pollutant, for controlling the particle being passed through in negative pressure settling chamber 200
Diameter.Sillometer is arranged in the communicating passage of combustion chamber 100 and negative pressure settling chamber 200, for measuring the flow of pollutant.
In an alternative embodiment, it is passed through the filter paper of mouth installation different performance in particle, using the filter paper of different performance, is made
For partial size filter, so that it is controllable to be passed through the indoor grain diameter of deposition, guarantee that subsequent test can be based on controllable particle
Partial size targetedly carries out.
As an alternative embodiment, combustion chamber 100 further comprises in above-described embodiment: the of mounted on top
One combustion chamber 100a and the second combustion chamber 100b.First combustion chamber 100a is connected by the first communicating passage 102a and settling chamber 200
Logical, the second combustion chamber 100b is connected to by the second communicating passage 102b with settling chamber 200.It is provided on first communicating passage 102a
The second valve is provided on first valve 104a, the first partial size filter and the first sillometer 103a, the second communicating passage 102b
104b, the second partial size filter and the second sillometer 103b.Design requirement of the present embodiment based on electric insulation passes through setting two
A combustion chamber forms a biggish combustion chamber, so that existing compact dimensions are moderate, not only contributes to concentrate containing suspended particulate,
And meet the requirement of electric insulation, be conducive to carry out the experimental study under high voltage, the efficiency of environmental simulation can be improved.
It should be pointed out that the present embodiment can be by adjusting the size of combustion chamber and/or settling chamber, shape, optionally, this
Embodiment can also by improveing or adjust the positional relationship in above system between device, such as by change number of combustion chambers,
Combustion chamber is replaced from the modes of emplacement of settling chamber, it can be achieved that different real space needs and test analysis demand, therefore, this reality
The positional relationship and connection relationship for applying each device of the example suction type simulation test analysis platform controllable to above-mentioned environmental condition are simultaneously
Uniqueness limitation is not done.
In an alternative embodiment, above-described embodiment can also by adjusting air inlet position, and/or increase communicating passage
Import bore, realize bigger through-flow.
As an alternative embodiment, the suction type simulation test analysis that environmental condition in above-described embodiment is controllable
Platform may also include that water cooled pipeline, water cooled pipeline are set to 102 outside of communicating passage of combustion chamber 100 and settling chamber 200, and
The gas flow reverse setting of water (flow) direction and communicating passage 102 in water-cooling channel facilitates to reduce in this way and simulate in transmission
The flue-gas temperature of pollutant reduces influence of the heat release of combustion chamber 100 to simulation test.
To sum up, the various embodiments described above pass through aiming at the problem that first kind scheme in the prior art and the second class scheme
The mode of burning is generated such as by the way of burning cigarette or piece of burning incense and continues enough particulate matters, and built using emulation
Mould analysis, mainly establishes the electrode model of concentric cylinder, determines under different cage body radiuses and length, cage body section and both ends
Electric-field intensity distribution and size cases, devise it is a kind of meet electric insulation under the conditions of, more appropriate closed container size, with
Guarantee the breakdown that the air gap does not occur.
Below with reference to Fig. 6 and Fig. 7, expansion explanation is carried out for the electrode model of concentric cylinder, passes through two-dimensional axial symmetric
Mode establishes the three-diemsnional electrode model of concentric cylinder, and Fig. 6 and Fig. 7 respectively illustrate corresponding actual segmented corona basket structure,
Wherein a is distance of the segmented corona cage outer end to cage body center, and b is distance of the segmented corona cage inner end to cage body center:
In Fig. 6, apply voltage on the conducting wire at center, then (xoy establishment of coordinate system is right according to different a, b length
At title center) field distribution is calculated, and the situation of change of Analysis of End Electric Field is analyzed, with the suitable cage body length of determination.When experiment, electricity
Pressure is up to 100kV, and the disruptive field intensity of pole non-uniform gap is 5kV/cm, air gap length (i.e. cage here in engineering
Body radius 0.36m) application voltage that 180kV can be born, it thereby may be ensured that the breakdown that the air gap does not occur.
In addition, the size set can be attached together by optimization design aiming at the problem that third class scheme in the prior art, such as:
In an alternative embodiment, the length of corona cage cage body can be 0.78m, and the radius of cage body can be 0.36m, both ensure that electricity in this way
It draws last breath the requirement of edge, and makes device volume suitable, and then realize the convenience and mobility of operation.According to mentioned above
B.a size, when b/a meet be greater than 0.6 less than 0.8 when, shield segment can effectively reduce Analysis of End Electric Field distortion so that
Electric field change on along b sections fluctuates within 0.1%.And actual cage body length, then the size of device itself is depended on, such as
The length, width and height of fruit device itself are 1m, it is contemplated that the convenience of wiring and installation, it is proposed that take a length of 0.78m in cage body, cage body half
Diameter then estimates according to the disruptive field intensity of pole non-uniform gap, minimum to be less than 20cm, actually herein in order to give after
Experimental voltage there are nargin, and to the greatest extent guarantee experiment safety, it is contemplated that the convenience of wiring and installation takes cage
Body radius is 0.36m.
Meanwhile the present embodiment also improves the mode that indoor particulate matter is transferred in settling chamber that will burn, and is
It solves the problems, such as pellet transportation, by the way of taking out negative pressure, that is, the connection of combustion chamber and settling chamber is initially switched off, in settling chamber
Pumping pressure causes the air pressure of combustion chamber to be higher than settling chamber, and then connection combustion chamber and settling chamber, reach particulate matter along draught head
The purpose of propagation.This mode does not need external gas cylinder, improves the safety of device and the terseness of structure.
The above description is only an embodiment of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of suction type simulation test analysis platform that environmental condition is controllable, which is characterized in that the platform includes: for simulating
The simulator of varying environment condition and device for testing and analyzing for monitoring measured conductor sample under the conditions of different simulated environments；
Wherein:
A) simulator includes:
Combustion chamber, for manufacturing the pollutant of simulated environment；
Negative pressure settling chamber, the measured conductor sample for being built-in with segmented corona cage and being set in the corona cage；It is described negative
Pressure settling chamber using principle of negative pressure by the pollutant of simulated environment for being introduced and depositing it on measured wire sample；
Control assembly is arranged in the communicating passage of the combustion chamber and the settling chamber, for controling and monitoring simulating pollution
The size and flow of object；
B) device for testing and analyzing includes:
Environmental parameter measurement device is connect with the settling chamber, for measuring the environmental parameter of the deposition indoor simulation；
Monitoring device, for monitoring the related data of the conductor sample topography data and its corona discharge effect；
Data Analysis Platform is analyzed for the related data to corona discharge effect, and exports analysis result.
2. the controllable suction type simulation test analysis platform of environmental condition according to claim 1, which is characterized in that described
Monitoring device further comprises:
Nanovoltmeter is provided with ion flowing plate, and the ion flowing plate is set to the outside of the corona cage, close for measuring ion stream
Degree；
Field mill is provided with field mill probe, and the field mill, which is popped one's head in, is set to the outside of the corona cage, for measuring total electric field；
High voltage power supply is powered for tested conductor sample；
Corona current measurement mechanism is connect with the measured conductor sample, for measuring the corona electricity of the measured conductor sample
Flow data.
3. the controllable suction type simulation test analysis platform of environmental condition according to claim 2, which is characterized in that described
Corona current measurement mechanism further comprises:
Capacitor is measured, is connect with the measured conductor sample, for dividing；
Sampling resistor, with the measurement capacitance connection, the corona current signal for generating corona discharge is converted into voltage letter
Number；
Capture card is connect with the measurement capacitor and the sampling resistor respectively, is generated for measuring the measured conductor sample
Corona current data and receive voltage signal.
4. the controllable suction type simulation test analysis platform of environmental condition according to any one of claims 1 to 3, feature
It is, the Data Analysis Platform includes:
Corona identification module, a variety of effects of the corona discharge for being obtained according to the data measurement unit measurement, judgement are
No generation corona discharge；
Corona analysis module, for when determining to occur corona discharge, according to the pulse strength of the corona current monitored and
Frequency defines corona discharge intensity, realizes detection and analysis for discharge effect under different condition；
Surface state analysis module is built for the corresponding conductor sample topography data of different corona discharge data according to acquisition
The corresponding relationship of the corona discharge intensity Yu the wire samples surface topography state is found, analysis obtains conductive surface contamination pair
In the influence of corona current pulse.
5. the controllable suction type simulation test analysis platform of environmental condition according to claim 4, it is characterised in that:
Anti-static coating is coated on the inner wall of the negative pressure settling chamber, opening up to accumulate on wall body has peep hole, outside the peep hole
Ultraviolet-cameras or high-speed CCD (charge-coupled device) camera connect deposits indoor corona discharge and particle deposition for observing
Situation；And/or
The negative pressure settling chamber is configured with the vacuum evacuation device for being used to form indoor negative pressure, so that the combustion chamber simulated
Particulate matter air-flow enters in settling chamber under the guidance of negative pressure；The settling chamber is provided with side door, and the high voltage power supply is arranged in
Side door door body is connect with the measured conductor sample.
6. the controllable suction type simulation test analysis platform of environmental condition according to claim 4, which is characterized in that described
Measured conductor sample is located at the central axis of the corona cage；The both ends of the measured conductor sample are provided with shielding ball, described
Shielding ball is connected to insulating bar, and the insulating bar is fixedly connected on the inner wall of the settling chamber.
7. the controllable suction type simulation test analysis platform of environmental condition according to claim 4, which is characterized in that described
Environmental parameter measurement device includes:
Concentration meter is set on the outside of the settling chamber, for measuring the pollutant concentration of the deposition chamber interior；
Air gauge is set on the outside of the settling chamber, for measuring the air pressure of the deposition chamber interior；
Hygrothermograph is set on the outside of the settling chamber, for measuring the temperature and humidity of the deposition chamber interior.
8. the controllable suction type simulation test analysis platform of environmental condition according to any one of claims 1 to 7, feature
It is, the control assembly further comprises:
Valve is arranged in the communicating passage of the combustion chamber and the settling chamber, for controlling the switch of passage of contaminants；
Partial size filter is arranged and leads to inlet in pollutant, is passed through the indoor grain diameter of the negative pressure deposition for controlling；
Sillometer is arranged in the communicating passage of the combustion chamber and the negative pressure settling chamber, for measuring the pollutant
Flow.
9. the controllable suction type simulation test analysis platform of environmental condition according to claim 8, which is characterized in that described
Combustion chamber further comprises: the first combustion chamber and the second combustion chamber of mounted on top；
First, second combustion chamber passes through the first, second communicating passage respectively and is connected to the settling chamber；
The first valve, the first partial size filter and the first sillometer, second connection are provided in first communicating passage
The second valve, the second partial size filter and the second sillometer are provided on channel.
10. the controllable suction type simulation test analysis platform of environmental condition according to claim 8, which is characterized in that should
Platform further include:
Water cooled pipeline is set on the outside of the communicating passage of the combustion chamber and the settling chamber, and the water in the water-cooling channel
The gas flow reverse setting in direction and the communicating passage is flowed, with flue-gas temperature for reducing simulating pollution object and described
Influence of the heat release of combustion chamber to simulation test.
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