CN104391235B - Device and method for measuring temperature of high voltage surface discharge medium by capillary tube in electrical power system - Google Patents
Device and method for measuring temperature of high voltage surface discharge medium by capillary tube in electrical power system Download PDFInfo
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- CN104391235B CN104391235B CN201410755809.5A CN201410755809A CN104391235B CN 104391235 B CN104391235 B CN 104391235B CN 201410755809 A CN201410755809 A CN 201410755809A CN 104391235 B CN104391235 B CN 104391235B
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Abstract
The invention discloses a device and a method for measuring the temperature of a high voltage surface discharge medium by a capillary tube in an electrical power system. The device comprises an infrared thermal infrared imager, a high-voltage-end fixed electrode, a grounded-end fixed electrode, a tungsten needle electrode, the capillary glass tube and an insulated supporting rod, wherein the high-voltage-end fixed electrode is electrically connected with the high-voltage end of a high-voltage circuit; the grounded-end fixed electrode is electrically connected with the grounded end of the high-voltage circuit; the two ends of the insulated supporting rod are connected with the high-voltage-end fixed electrode and the grounded-end fixed electrode respectively; the capillary glass tube is vertically arranged on the grounded-end fixed electrode; the tungsten needle electrode is vertically arranged; the upper end of the tungsten needle electrode is electrically connected with the high-voltage-end fixed electrode, and the lower end of the tungsten needle electrode is inserted into the capillary glass tube; a gap is formed between the lower end of the tungsten needle electrode and the wall of the capillary glass tube; the arrangement position of the infrared thermal infrared imager corresponds to the position of the tungsten needle electrode inserted into the capillary glass tube. The device is simple in structure and capable of measuring the temperature of the surface discharge medium.
Description
Technical field
The present invention relates to measure the apparatus and method of high-tension electricity creeping discharge medium temperature in power system, electricity is specifically referred to
The apparatus and method for measuring high-tension electricity creeping discharge medium temperature using capillary in Force system.
Background technology
Such as insulator arrangement creeping discharge in power system has very big relation with dielectric surface, and its fuel factor is also a weight
The mechanism wanted, but due to the dispersiveness of creeping distance, it is difficult to measure the medium temperature distribution of creeping discharge, it is also difficult to it
Fuel factor makees quantitative study.
Existing method is, in a plane and open space measurement, not account for the dissipation of heat, the dispersion in path,
Therefore quantitative measurment cannot be made.
The content of the invention
An object of the present invention is to provide in power system and measures high-tension electricity creeping discharge medium temperature using capillary
Device, the apparatus structure is simple, can measure creeping discharge medium temperature.
The above-mentioned purpose of the present invention is by following technical solution realizing：High pressure is measured in power system using capillary
The device of electric creeping discharge medium temperature, it is characterised in that：The device includes thermal infrared imager, high-pressure side fixed electrode, ground connection
End fixed electrode, tungsten needle electrode, glass capillary and insulating support rod, the high-pressure side fixed electrode is arranged on top, with height
The high-pressure side of volt circuit is electrically connected by high-voltage conducting wires, and described earth terminal fixed electrode is arranged on bottom, with high-tension circuit
Earth terminal is electrically connected by earth lead, and described insulating support rod is at least two, and insulating support rod is vertically arranged, two ends point
It is not connected with described high-pressure side fixed electrode, earth terminal fixed electrode, plays a supportive role, the glass capillary is vertically put
Put on the earth terminal fixed electrode, described tungsten needle electrode is also vertically arranged, and the center line and capillary of tungsten needle electrode
The center line of glass tube coincides, and the upper end of tungsten needle electrode electrically connects with high-pressure side fixed electrode, lower end insertion glass capillary
It is interior, and gap is left and the tube wall of glass capillary between, placement location and the tungsten needle electrode of the thermal infrared imager are inserted
The position of glass capillary is corresponding, and discharging distance d, institute are left between the lower end of the tungsten needle electrode and earth terminal fixed electrode
Stating tungsten needle electrode can discharge when high-tension circuit is connected, and the heat produced by electric discharge is limited in glass capillary, by red
The temperature of outer thermal imaging system measurement capillary glass pipe outer wall is reflecting the distribution situation of creeping discharge medium temperature.
In the present invention, the internal diameter of the glass capillary is 1.1mm, a diameter of 1mm of the tungsten needle electrode.
In the present invention, described high-pressure side fixed electrode is the discoidal electrode of horizontally set, and described earth terminal is consolidated
Fixed electrode is the electrode of the circular plate type of horizontally set.
In the present invention, described insulating support rod is two or three or four.
The present invention can do following improvement：Circle is also had additional between the upper end of the tungsten needle electrode and high-pressure side fixed electrode
The high-pressure side of cylindricality adjusts electrode, described high-pressure side adjust electrode respectively with high-pressure side fixed electrode and the upper end of tungsten needle electrode
It is connected, the earth terminal that circular plate type is also had additional between the glass capillary and earth terminal fixed electrode adjusts electrode, passes through
The high-pressure side set up adjusts electrode and earth terminal adjusts electrode to adjust discharging distance d.
The discharging distance d is in the range of 2mm～15mm.
Described earth terminal is adjusted and is threaded connection between electrode and earth terminal fixed electrode.
Described high-pressure side is adjusted and is threaded connection between electrode and high-pressure side fixed electrode.
High-tension circuit in the present invention refers to 6000 volts to 20000 volts of high-tension circuit.
General closed planar and open creeping discharge form are changed into putting along face in glass capillary by the device of the present invention
Electricity, the heat for producing that discharges can be temporarily limited in the restricted clearance, be easy to thermal infrared imager to measure in time, and can be made
Quantitative measurment.
The glass capillary of 1.1 millimeters of diameter is enclosed within the present invention tungsten needle electrode outside of 1 millimeter of diameter, tungsten needle electrode
Wedge angle can wear into different shape to simulate different " three knots " structures, and " three knots " refers to electrode, medium and air.Tungsten needle electrode does height
Piezoelectricity pole, the plate electrode below glass capillary is used as earth electrode.Outside by using infrared heat image instrument measuring glass capillary
The temperature of wall is reflecting creeping discharge medium temperature distribution situation.In addition, being provided with the height-adjustable disc electrode of earth terminal
With the height-adjustable cylinder electrode of high-pressure side so that discharging gap can adjust.
The second object of the present invention is to provide in power system and measures high-tension electricity creeping discharge medium temperature using capillary
Method, the method is easy to operate, and the testing result for obtaining is accurate.
The above-mentioned purpose of the present invention is by following technical solution realizing：Using in above-mentioned power system utilize capillary
The method that the device of measurement high-tension electricity creeping discharge medium temperature is measured, it is characterised in that the method comprises the steps：
(1) described device is connected；
(2) connect high-tension circuit measure, using by thermal infrared imager acquisition capillary glass pipe outer wall temperature come
The distribution situation of reflection creeping discharge medium temperature, the profiling temperatures have reacted the power of high-voltage electrical discharges.
Compared with prior art, the present invention changes into general closed planar and open creeping discharge form in glass capillary
Creeping discharge, discharge produce heat can temporarily be limited in the restricted clearance, creeping discharge medium temperature can be made
Quantitative measurment.
Description of the drawings
The present invention is described in further details with reference to the accompanying drawings and detailed description.
Fig. 1 is the overall structure diagram of apparatus of the present invention；
Fig. 2 is the use state of apparatus of the present invention with reference to figure；
Fig. 3 is that the capillary wall medium temperature distribution map for obtaining is measured using apparatus of the present invention, and abscissa is represented in figure
The distance of glass capillary to earth terminal fixed electrode, unit is millimeter, and ordinate represents temperature value, unit for degree Celsius.
Description of reference numerals
1st, high-pressure side fixed electrode；2nd, high-pressure side adjusts electrode；3rd, tungsten needle electrode；4th, glass capillary；
5th, earth terminal adjusts electrode；6th, earth terminal fixed electrode；7th, insulating support rod；8th, high-voltage probe；
9th, oscillograph；10th, resistance；11st, thermal infrared imager
Specific embodiment
The device of high-tension electricity creeping discharge medium temperature is measured in power system as shown in Figure 1 and Figure 2 using capillary,
The device includes thermal infrared imager 11, high-pressure side fixed electrode 1, earth terminal fixed electrode 6, tungsten needle electrode 3, glass capillary 4
With insulating support rod 7, high-pressure side fixed electrode 1 is the discoidal electrode of horizontally set, and earth terminal fixed electrode 6 is laterally to set
The electrode of the circular plate type put, high-pressure side fixed electrode 1 is arranged on top, is electrically connected by high-voltage conducting wires with the high-pressure side of high-tension circuit
Connect, earth terminal fixed electrode 6 is arranged on bottom, electrically connected by earth lead with the earth terminal of high-tension circuit, insulating support rod 7
For two, arrange in symmetry shape, insulating support rod 7 is vertically arranged, and two ends are fixed respectively with high-pressure side fixed electrode 1, earth terminal
Electrode 6 is connected, and plays a supportive role.
Glass capillary 4 is vertically placed on earth terminal fixed electrode 6, and tungsten needle electrode 3 is also vertically arranged, and tungsten needle electricity
The center line of pole 3 coincides with the center line of glass capillary 4, and the internal diameter of glass capillary 4 is 1.1mm, tungsten needle electrode 3 it is straight
Footpath is 1mm, and the upper end of tungsten needle electrode 3 electrically connects with high-pressure side fixed electrode 1, lower end insertion glass capillary 4 in, and with hair
Leave minimal clearance between the tube wall of thin glass tube 4, unilateral gap is 0.05mm, the placement location and tungsten needle of thermal infrared imager 11
The position of the insertion glass capillary 4 of electrode 3 is corresponding, has rectilineal interval L between thermal infrared imager 11 and glass capillary 4,
Rectilineal interval L is 50cm, discharging distance d is left between the lower end of tungsten needle electrode 3 and earth terminal fixed electrode 6, between the electric discharge
It is 6mm away from d, tungsten needle electrode 3 can discharge when high-tension circuit is connected, the heat produced by electric discharge is limited in glass capillary 4
It is interior, the distribution situation of creeping discharge medium temperature is reflected by the temperature of the measurement outer wall of glass capillary 4 of thermal infrared imager 11,
The profiling temperatures have reacted the power of high-voltage electrical discharges.
In order that discharging distance d can be adjusted, the present embodiment the upper end of tungsten needle electrode 3 and high-pressure side fixed electrode 1 it
Between also have additional cylinder high-pressure side adjust electrode 2, high-pressure side adjust electrode 2 respectively with high-pressure side fixed electrode 1 and tungsten needle
The upper end of electrode 3 is connected, and high-pressure side is adjusted and is threaded connection between electrode 2 and high-pressure side fixed electrode 1, it is also possible to directly
High-pressure side regulation electrode 2 is inserted on high-pressure side fixed electrode 1, is also increased between glass capillary 4 and earth terminal fixed electrode 6
The earth terminal for being provided with circular plate type adjusts electrode 5, and earth terminal is adjusted and is threaded connection between electrode 5 and earth terminal fixed electrode 6,
Both grafting can also be adjusted electrode 2 and earth terminal regulation electrode 5 to adjust discharging distance d by the high-pressure side set up.Increase
If high-pressure side adjust electrode 2 and can also regard the part of high-pressure side fixed electrode 1 as, the earth terminal set up adjusts electrode 5
A part for earth terminal fixed electrode 6 can be regarded as.
As the conversion of the present embodiment, it is also possible to high-pressure side is adjusted into electrode 2 and earth terminal adjusts electrode 5 and removes, directly
Using high-pressure side fixed electrode 1 and earth terminal fixed electrode 6, equally can be to surveying to high-tension electricity creeping discharge medium temperature
Amount.
As the conversion of the present embodiment, rectilineal interval L can in the range of 40cm～60cm value.
As the conversion of the present embodiment, discharging distance d can in the range of 2mm～15mm value, according to the voltage of circuit
To select.
Used as the conversion of the present embodiment, insulating support rod 7 is at least two, or three or four etc. are more
Root.
Measured using the device for measuring high-tension electricity creeping discharge medium temperature using capillary in above-mentioned power system
Method, the method comprises the steps：
(1) attachment means；
(2) connect high-tension circuit to measure, using the temperature that the outer wall of glass capillary 4 is obtained by thermal infrared imager 11
To reflect the distribution situation of creeping discharge medium temperature, the profiling temperatures have reacted the power of high-voltage electrical discharges.
As shown in Fig. 2 the device of the present embodiment accesses when in use 6000 volts of high-tension circuit, high-pressure side fixed electrode 1
Electrically connected by high-voltage conducting wires with the high-pressure side of high-tension circuit, earth terminal fixed electrode 6 passes through to connect with the earth terminal of high-tension circuit
Ground wire electrical connection, is measured using the device to high-tension electricity creeping discharge medium temperature, in high-tension circuit, high-voltage probe
8 access the measurement applied voltage of oscillograph 9, and resistance 10 accesses the measurement discharge current of oscillograph 9, and voltage and current is used to monitor electric discharge
State.
Fig. 3 is that the tube wall medium temperature distribution map for obtaining is measured using apparatus of the present invention, and abscissa represents capillary glass in figure
The distance of glass pipe to earth terminal fixed electrode, from Fig. 3 capillary wall medium temperature can be obtained.
The above embodiment of the present invention is not limiting the scope of the present invention, and embodiments of the present invention are not limited to
This, all this kind the above of the invention, according to the ordinary technical knowledge and customary means of this area, without departing from this
Under the premise of inventing above-mentioned basic fundamental thought, modification, replacement or the change of other various ways that said structure of the present invention is made
More, all should fall within the scope and spirit of the invention.
Claims (8)
1. the device of high-tension electricity creeping discharge medium temperature is measured using capillary in power system, it is characterised in that：The device
Including thermal infrared imager, high-pressure side fixed electrode, earth terminal fixed electrode, tungsten needle electrode, glass capillary and insulating support rod,
The high-pressure side fixed electrode is arranged on top, is electrically connected by high-voltage conducting wires with the high-pressure side of high-tension circuit, described ground connection
End fixed electrode is arranged on bottom, is electrically connected by earth lead with the earth terminal of high-tension circuit, and described insulating support rod is
At least two, insulating support rod is vertically arranged, and two ends are connected respectively with described high-pressure side fixed electrode, earth terminal fixed electrode
Connect, play a supportive role, the glass capillary is vertically placed on the earth terminal fixed electrode, the glass capillary it is interior
Footpath is 1.1mm, and described tungsten needle electrode is also vertically arranged, a diameter of 1mm of the tungsten needle electrode, and the center of tungsten needle electrode
Line coincides with the center line of glass capillary, and the upper end of tungsten needle electrode electrically connects with high-pressure side fixed electrode, lower end insertion hair
In thin glass tube, and gap is left and the tube wall of glass capillary between, the placement location and tungsten needle of the thermal infrared imager
The position of electrode insertion glass capillary is corresponding, and between the lower end of the tungsten needle electrode and earth terminal fixed electrode electric discharge is left
Spacing d, the tungsten needle electrode can discharge when high-tension circuit is connected, and the heat produced by electric discharge is limited in glass capillary
It is interior, the distribution situation of creeping discharge medium temperature is reflected by the temperature of infrared heat image instrument measuring capillary glass pipe outer wall.
2. the dress of high-tension electricity creeping discharge medium temperature is measured using capillary in power system according to claim 1
Put, it is characterised in that：Described high-pressure side fixed electrode is the discoidal electrode of horizontally set, and described earth terminal fixes electricity
The extremely electrode of the circular plate type of horizontally set.
3. the dress of high-tension electricity creeping discharge medium temperature is measured using capillary in power system according to claim 1
Put, it is characterised in that：Described insulating support rod is three or four.
4. high-tension electricity creeping discharge medium is measured using capillary in the power system according to any one of claims 1 to 3
The device of temperature, it is characterised in that：Cylinder is also had additional between the upper end of the tungsten needle electrode and high-pressure side fixed electrode
High-pressure side adjusts electrode, and described high-pressure side adjusts electrode and is connected with the upper end of high-pressure side fixed electrode and tungsten needle electrode respectively
Connect, the earth terminal that circular plate type is also had additional between the glass capillary and earth terminal fixed electrode adjusts electrode, by setting up
High-pressure side adjust electrode and earth terminal and adjust electrode to adjust discharging distance d.
5. the dress of high-tension electricity creeping discharge medium temperature is measured using capillary in power system according to claim 4
Put, it is characterised in that：The discharging distance d is in the range of 2mm～15mm.
6. the dress of high-tension electricity creeping discharge medium temperature is measured using capillary in power system according to claim 4
Put, it is characterised in that：Described earth terminal is adjusted and is threaded connection between electrode and earth terminal fixed electrode.
7. the dress of high-tension electricity creeping discharge medium temperature is measured using capillary in power system according to claim 4
Put, it is characterised in that：Described high-pressure side is adjusted and is threaded connection between electrode and high-pressure side fixed electrode.
8. adopt in the power system described in any one of claim 1 to 7 and measure high-tension electricity creeping discharge medium using capillary
The method that the device of temperature is measured, it is characterised in that the method comprises the steps：
(1) described device is connected；
(2) connect high-tension circuit to measure, reflected using the temperature that capillary glass pipe outer wall is obtained by thermal infrared imager
The distribution situation of creeping discharge medium temperature, the profiling temperatures have reacted the power of high-voltage electrical discharges.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410755809.5A CN104391235B (en) | 2014-12-10 | 2014-12-10 | Device and method for measuring temperature of high voltage surface discharge medium by capillary tube in electrical power system |
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| CN201410755809.5A CN104391235B (en) | 2014-12-10 | 2014-12-10 | Device and method for measuring temperature of high voltage surface discharge medium by capillary tube in electrical power system |
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| CN104391235A CN104391235A (en) | 2015-03-04 |
| CN104391235B true CN104391235B (en) | 2017-05-03 |
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| EP1430501A2 (en) * | 2001-07-02 | 2004-06-23 | Plasmasol Corporation | A novel electrode for use with atmospheric pressure plasma emitter apparatus and method for using the same |
| JP5622751B2 (en) * | 2010-01-25 | 2014-11-12 | 株式会社日立ハイテクノロジーズ | Mass spectrometer |
| CN101957423B (en) * | 2010-09-16 | 2014-01-29 | 中国电力科学研究院 | Device for testing insulating property of high-voltage oiled paper |
| CN102735977A (en) * | 2012-07-12 | 2012-10-17 | 四川大学 | Electrical-thermal aging device of cable accessories under high voltage and high current and test method thereof |
| CN202794439U (en) * | 2012-08-20 | 2013-03-13 | 广东电网公司电力科学研究院 | Test model simulating surface discharge |
| CN203572919U (en) * | 2013-11-25 | 2014-04-30 | 国家电网公司 | Parameter-adjustable along-surface discharge test model |
| CN204359897U (en) * | 2014-12-10 | 2015-05-27 | 广东电网有限责任公司电力科学研究院 | Kapillary is utilized to measure the device of high-tension electricity creeping discharge medium temperature in electric system |
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Effective date of registration: 20151209 Address after: 510080 Dongfeng East Road, Dongfeng, Guangdong, Guangzhou, Zhejiang Province, No. 8 Applicant after: ELECTRIC POWER RESEARCH INSTITUTE, GUANGDONG POWER GRID CO., LTD. Address before: 510080 Dongfeng East Road, Dongfeng, Guangdong, Guangzhou, Zhejiang Province, No. 8 Applicant before: ELECTRIC POWER RESEARCH INSTITUTE, GUANGDONG POWER GRID CO., LTD. Applicant before: Huazhong University of Science and Technology |
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