CN104391235A - 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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- CN104391235A CN104391235A CN201410755809.5A CN201410755809A CN104391235A CN 104391235 A CN104391235 A CN 104391235A CN 201410755809 A CN201410755809 A CN 201410755809A CN 104391235 A CN104391235 A CN 104391235A
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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 in electric system the equipment and method of measuring high-tension electricity creeping discharge medium temperature, specifically refer in electric system the apparatus and method utilizing kapillary to measure high-tension electricity creeping discharge medium temperature.
Background technology
In electric system, such as insulator arrangement creeping discharge and dielectric surface have very big relation, its thermal effect is also an important mechanism, but due to the dispersiveness of creeping distance, be difficult to the medium temperature distribution measuring creeping discharge, be also difficult to do quantitative examination to its thermal effect.
Existing method is at a plane and open space measurement, does not consider the dissipation of heat, the dispersion in path, therefore cannot do quantitative measurment.
Summary of the invention
An object of the present invention is to provide in electric system the device utilizing kapillary to measure high-tension electricity creeping discharge medium temperature, and this apparatus structure is simple, can measure creeping discharge medium temperature.
Above-mentioned purpose of the present invention realizes by following technical solution: utilize kapillary to measure the device of high-tension electricity creeping discharge medium temperature in electric system, it is characterized in that: this device comprises thermal infrared imager, high-pressure side fixed electorde, earth terminal fixed electorde, tungsten pin electrode, glass capillary and insulating support rod, described high-pressure side fixed electorde is arranged on top, be electrically connected by high-voltage conducting wires with the high-pressure side of high-tension circuit, described earth terminal fixed electorde is arranged on bottom, be electrically connected by earth lead with the earth terminal of high-tension circuit, described insulating support rod is at least two, insulating support rod is vertically arranged, two ends respectively with described high-pressure side fixed electorde, earth terminal fixed electorde is connected, play a supportive role, described glass capillary is vertically placed on described earth terminal fixed electorde, described tungsten pin electrode is also vertically arranged, and the center line of tungsten pin electrode and the center line of glass capillary coincide, the upper end of tungsten pin electrode is electrically connected with high-pressure side fixed electorde, lower end is inserted in glass capillary, and and leave gap between the tube wall of glass capillary, the placement location of described thermal infrared imager is corresponding with the position that tungsten pin electrode inserts glass capillary, discharging distance d is left between the lower end of described tungsten pin electrode and earth terminal fixed electorde, described tungsten pin electrode can discharge when high-tension circuit is connected, the caloric restriction that electric discharge produces is in glass capillary, the distribution situation of creeping discharge medium temperature is reflected by the temperature of infrared heat image instrument measuring glass capillary outer wall.
In the present invention, the internal diameter of described glass capillary is 1.1mm, and the diameter of described tungsten pin electrode is 1mm.
In the present invention, described high-pressure side fixed electorde is the discoidal electrode of horizontally set, and described earth terminal fixed electorde 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: also have additional columniform high-pressure side between the upper end of described tungsten pin electrode and high-pressure side fixed electorde and regulate electrode, described high-pressure side regulates electrode to be connected with the upper end of high-pressure side fixed electorde with tungsten pin electrode respectively, the earth terminal also having additional circular plate type between described glass capillary and earth terminal fixed electorde regulates on electrode, regulates electrode and earth terminal to regulate electrode to regulate discharging distance d by the high-pressure side set up.
Described discharging distance d is within the scope of 2mm ~ 15mm.
Described earth terminal regulates between electrode and earth terminal fixed electorde and is threaded connection.
Described high-pressure side regulates between electrode and high-pressure side fixed electorde and is threaded connection.
High-tension circuit in the present invention refers to the high-tension circuit of 6000 volts to 20000 volts
General closed planar and open creeping discharge form are changed into the creeping discharge in glass capillary by device of the present invention, and the heat that electric discharge produces can temporarily be limited in this restricted clearance, is convenient to thermal infrared imager and measures in time, and can do quantitative measurment.
The glass capillary of diameter 1.1 millimeters is enclosed within outside the tungsten pin electrode of diameter 1 millimeter by the present invention, and the wedge angle of tungsten pin electrode can wear into difformity to simulate difference " three knots " structure, and " three knots " refers to electrode, medium and air.Tungsten pin electrode does high-field electrode, and the plate electrode below glass capillary is as ground-electrode.Creeping discharge medium temperature distribution situation is reflected by utilizing the temperature of infrared heat image instrument measuring glass capillary outer wall.In addition, be provided with the height-adjustable disc electrode of earth terminal and the height-adjustable cylinder electrode of high-pressure side, make discharging gap adjustable.
Two of object of the present invention is to provide in electric system the method utilizing kapillary to measure high-tension electricity creeping discharge medium temperature, and the method is easy to operate, and the testing result obtained is accurate.
Above-mentioned purpose of the present invention realizes by following technical solution: adopt in above-mentioned electric system the device utilizing kapillary to measure high-tension electricity creeping discharge medium temperature to carry out the method measured, it is characterized in that, the method comprises the steps:
(1) described device is connected;
(2) connect high-tension circuit to measure, utilize the distribution situation being reflected creeping discharge medium temperature by the temperature of thermal infrared imager acquisition glass capillary outer wall, this profiling temperatures has reacted the power of high-voltage electrical discharges.
Compared with prior art, general closed planar and open creeping discharge form are changed into the creeping discharge in glass capillary by the present invention, and the heat that electric discharge produces can temporarily be limited in this restricted clearance, can do quantitative measurment to creeping discharge medium temperature.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further details.
Fig. 1 is the one-piece construction schematic diagram of apparatus of the present invention;
Fig. 2 is the using state reference diagram of apparatus of the present invention;
Fig. 3 adopts apparatus of the present invention to measure the capillary wall medium temperature distribution plan obtained, and in figure, horizontal ordinate represents the distance of glass capillary to earth terminal fixed electorde, and unit is millimeter, and ordinate represents temperature value, and unit is degree Celsius.
Description of reference numerals
1, high-pressure side fixed electorde; 2, high-pressure side regulates electrode; 3, tungsten pin electrode; 4, glass capillary;
5, earth terminal regulates electrode; 6, earth terminal fixed electorde; 7, insulating support rod; 8, high-voltage probe;
9, oscillograph; 10, resistance; 11, thermal infrared imager
Embodiment
As Fig. 1, kapillary is utilized to measure the device of high-tension electricity creeping discharge medium temperature in electric system shown in Fig. 2, this device comprises thermal infrared imager 11, high-pressure side fixed electorde 1, earth terminal fixed electorde 6, tungsten pin electrode 3, glass capillary 4 and insulating support rod 7, high-pressure side fixed electorde 1 is the discoidal electrode of horizontally set, earth terminal fixed electorde 6 is the electrode of the circular plate type of horizontally set, high-pressure side fixed electorde 1 is arranged on top, be electrically connected by high-voltage conducting wires with the high-pressure side of high-tension circuit, earth terminal fixed electorde 6 is arranged on bottom, be electrically connected by earth lead with the earth terminal of high-tension circuit, insulating support rod 7 is two, symmetrically shape is arranged, insulating support rod 7 is vertically arranged, two ends respectively with high-pressure side fixed electorde 1, earth terminal fixed electorde 6 is connected, play a supportive role.
Glass capillary 4 is vertically placed on earth terminal fixed electorde 6, tungsten pin electrode 3 is also vertically arranged, and the center line of the center line of tungsten pin electrode 3 and glass capillary 4 coincides, the internal diameter of glass capillary 4 is 1.1mm, the diameter of tungsten pin electrode 3 is 1mm, the upper end of tungsten pin electrode 3 is electrically connected with high-pressure side fixed electorde 1, lower end is inserted in glass capillary 4, and and leave minimum gap between the tube wall of glass capillary 4, one-sided gap is 0.05mm, the placement location of thermal infrared imager 11 is corresponding with the position that tungsten pin electrode 3 inserts glass capillary 4, there is between thermal infrared imager 11 and glass capillary 4 rectilineal interval L, this rectilineal interval L is 50cm, discharging distance d is left between the lower end of tungsten pin electrode 3 and earth terminal fixed electorde 6, this discharging distance d is 6mm, tungsten pin electrode 3 can discharge when high-tension circuit is connected, the caloric restriction that electric discharge produces is in glass capillary 4, the temperature measuring glass capillary 4 outer wall by thermal infrared imager 11 reflects the distribution situation of creeping discharge medium temperature, this profiling temperatures has reacted the power of high-voltage electrical discharges.
Can adjust to make discharging distance d, the present embodiment also has additional columniform high-pressure side and regulates electrode 2 between the upper end of tungsten pin electrode 3 and high-pressure side fixed electorde 1, high-pressure side regulates electrode 2 to be connected with the upper end of high-pressure side fixed electorde 1 with tungsten pin electrode 3 respectively, high-pressure side regulates between electrode 2 and high-pressure side fixed electorde 1 and is threaded connection, also can electrode 2 be directly regulated by high-pressure side to be inserted on high-pressure side fixed electorde 1, the earth terminal also having additional circular plate type between glass capillary 4 and earth terminal fixed electorde 6 regulates on electrode 5, earth terminal regulates between electrode 5 and earth terminal fixed electorde 6 and is threaded connection, also can by both grafting, electrode 2 and earth terminal is regulated to regulate electrode 5 to regulate discharging distance d by the high-pressure side set up.The high-pressure side set up regulates electrode 2 also can regard a part for high-pressure side fixed electorde 1 as, and the earth terminal set up regulates electrode 5 also can regard a part for earth terminal fixed electorde 6 as.
As the conversion of the present embodiment, also high-pressure side can be regulated electrode 2 and earth terminal to regulate electrode 5 to remove, directly adopt high-pressure side fixed electorde 1 and earth terminal fixed electorde 6, equally can measure to high-tension electricity creeping discharge medium temperature.
As the conversion of the present embodiment, rectilineal interval L can within the scope of 40cm ~ 60cm value.
As the conversion of the present embodiment, discharging distance d can within the scope of 2mm ~ 15mm value, the voltage according to circuit is selected.
As the conversion of the present embodiment, insulating support rod 7 is at least two, also can be three or four etc. many.
Adopt in above-mentioned electric system the device utilizing kapillary to measure high-tension electricity creeping discharge medium temperature to carry out the method measured, the method comprises the steps:
(1) coupling arrangement;
(2) connect high-tension circuit to measure, utilize the temperature obtaining glass capillary 4 outer wall by thermal infrared imager 11 to reflect the distribution situation of creeping discharge medium temperature, this profiling temperatures has reacted the power of high-voltage electrical discharges.
As shown in Figure 2, the device of the present embodiment accesses the high-tension circuit of 6000 volts in use, high-pressure side fixed electorde 1 is electrically connected by high-voltage conducting wires with the high-pressure side of high-tension circuit, earth terminal fixed electorde 6 is electrically connected by earth lead with the earth terminal of high-tension circuit, this device is adopted to measure high-tension electricity creeping discharge medium temperature, in high-tension circuit, high-voltage probe 8 accesses oscillograph 9 and measures impressed voltage, resistance 10 accesses oscillograph 9 and measures discharge current, and voltage and current is for monitoring discharge condition.
Fig. 3 adopts apparatus of the present invention to measure the tube wall medium temperature distribution plan obtained, and in figure, horizontal ordinate represents the distance of glass capillary to earth terminal fixed electorde, can obtain capillary wall medium temperature from Fig. 3.
The above embodiment of the present invention is not limiting the scope of the present invention; embodiments of the present invention are not limited thereto; all this kind is according to foregoing of the present invention; according to ordinary technical knowledge and the customary means of this area; do not departing under the present invention's above-mentioned basic fundamental thought prerequisite; to the amendment of other various ways that said structure of the present invention is made, replacement or change, all should drop within protection scope of the present invention.
Claims (9)
1. in electric system, utilize kapillary to measure the device of high-tension electricity creeping discharge medium temperature, it is characterized in that: this device comprises thermal infrared imager, high-pressure side fixed electorde, earth terminal fixed electorde, tungsten pin electrode, glass capillary and insulating support rod, described high-pressure side fixed electorde is arranged on top, be electrically connected by high-voltage conducting wires with the high-pressure side of high-tension circuit, described earth terminal fixed electorde is arranged on bottom, be electrically connected by earth lead with the earth terminal of high-tension circuit, described insulating support rod is at least two, insulating support rod is vertically arranged, two ends respectively with described high-pressure side fixed electorde, earth terminal fixed electorde is connected, play a supportive role, described glass capillary is vertically placed on described earth terminal fixed electorde, described tungsten pin electrode is also vertically arranged, and the center line of tungsten pin electrode and the center line of glass capillary coincide, the upper end of tungsten pin electrode is electrically connected with high-pressure side fixed electorde, lower end is inserted in glass capillary, and and leave gap between the tube wall of glass capillary, the placement location of described thermal infrared imager is corresponding with the position that tungsten pin electrode inserts glass capillary, discharging distance d is left between the lower end of described tungsten pin electrode and earth terminal fixed electorde, described tungsten pin electrode can discharge when high-tension circuit is connected, the caloric restriction that electric discharge produces is in glass capillary, the distribution situation of creeping discharge medium temperature is reflected by the temperature of infrared heat image instrument measuring glass capillary outer wall.
2. utilize kapillary to measure the device of high-tension electricity creeping discharge medium temperature in electric system according to claim 1, it is characterized in that: the internal diameter of described glass capillary is 1.1mm, the diameter of described tungsten pin electrode is 1mm.
3. in electric system according to claim 1, utilize kapillary to measure the device of high-tension electricity creeping discharge medium temperature, it is characterized in that: described high-pressure side fixed electorde is the discoidal electrode of horizontally set, described earth terminal fixed electorde is the electrode of the circular plate type of horizontally set.
4. utilize kapillary to measure the device of high-tension electricity creeping discharge medium temperature in electric system according to claim 1, it is characterized in that: described insulating support rod is three or four.
5. in the electric system according to any one of Claims 1-4, utilize kapillary to measure the device of high-tension electricity creeping discharge medium temperature, it is characterized in that: also have additional columniform high-pressure side between the upper end of described tungsten pin electrode and high-pressure side fixed electorde and regulate electrode, described high-pressure side regulates electrode to be connected with the upper end of high-pressure side fixed electorde with tungsten pin electrode respectively, the earth terminal also having additional circular plate type between described glass capillary and earth terminal fixed electorde regulates on electrode, electrode and earth terminal is regulated to regulate electrode to regulate discharging distance d by the high-pressure side set up.
6. utilize kapillary to measure the device of high-tension electricity creeping discharge medium temperature in electric system according to claim 5, it is characterized in that: described discharging distance d is within the scope of 2mm ~ 15mm.
7. utilize kapillary to measure the device of high-tension electricity creeping discharge medium temperature in electric system according to claim 5, it is characterized in that: described earth terminal regulates between electrode and earth terminal fixed electorde and is threaded connection.
8. utilize kapillary to measure the device of high-tension electricity creeping discharge medium temperature in electric system according to claim 5, it is characterized in that: described high-pressure side regulates between electrode and high-pressure side fixed electorde and is threaded connection.
9. adopt in the electric system described in claim 1 to 8 device utilizing kapillary to measure high-tension electricity creeping discharge medium temperature to carry out the method measured, it is characterized in that, the method comprises the steps:
(1) described device is connected;
(2) connect high-tension circuit to measure, utilize the distribution situation being reflected creeping discharge medium temperature by the temperature of thermal infrared imager acquisition glass capillary outer wall, this profiling temperatures has 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 true CN104391235A (en) | 2015-03-04 |
| CN104391235B CN104391235B (en) | 2017-05-03 |
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| WO2003005397A2 (en) * | 2001-07-02 | 2003-01-16 | Plasmasol Corporation | A novel electrode for use with atmospheric pressure plasma emitter apparatus and method for using the same |
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| 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 |
-
2014
- 2014-12-10 CN CN201410755809.5A patent/CN104391235B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003005397A2 (en) * | 2001-07-02 | 2003-01-16 | Plasmasol Corporation | A novel electrode for use with atmospheric pressure plasma emitter apparatus and method for using the same |
| WO2011089912A1 (en) * | 2010-01-25 | 2011-07-28 | 株式会社日立ハイテクノロジーズ | Mass spectrometry device |
| CN101957423A (en) * | 2010-09-16 | 2011-01-26 | 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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