CN202886441U - High-voltage resistor-type voltage divider - Google Patents
High-voltage resistor-type voltage divider Download PDFInfo
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- CN202886441U CN202886441U CN 201220379292 CN201220379292U CN202886441U CN 202886441 U CN202886441 U CN 202886441U CN 201220379292 CN201220379292 CN 201220379292 CN 201220379292 U CN201220379292 U CN 201220379292U CN 202886441 U CN202886441 U CN 202886441U
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Abstract
The utility model relates to a high-voltage resistor-type voltage divider including a voltage divider body, a resistor layer, a buffer film, a high-voltage electrode and a grounding electrode. The voltage divider body is in the shape of a cylinder. The resistor layer covers the external part of the voltage divider body and is used for realizing equipotential shielding of the voltage divider body. The buffer film covers the external part of the resistor layer and enables the high-voltage resistor-type voltage divider to have an adhesive performance and an anti-stress performance. The high-voltage electrode is in the shape of an upper cover and is arranged on an end of the voltage divider connected with a high-voltage lead. The high-voltage electrode is used for receiving voltage signals sent by the high-voltage lead. The grounding electrode is in the shape of a lower cover and is arranged on a grounding end of the voltage divider body. The grounding electrode is used for substituting a ground wire. According to the utility model, since technical measures such as compensation, shielding and the like are adopted for the high-voltage resistor-type voltage divider, the standard output of the high-voltage resistor-type voltage divider is guaranteed.
Description
Technical field
The utility model relates to a kind of voltage divider, relates in particular to a kind of high-tension electricity resistance type voltage divider, belongs to power industry components and parts technical field.
Background technology
Online high pressure (10kV, 35kV) is measured, is monitored and protection; the normal electronic mutual inductor that adopts a kind of electric resistance partial pressure technology; replace traditional electromagnetic potential transformer, because of its have volume little, lightweight, unsaturated, without many advantages such as ferroresonance and service band be wide.Can not but why this kind electronic mutual inductor replace traditional electromagnetic transformer so far fully? except reasons such as national policy, use habit, auxiliary facilities, wherein the most important is to adopt the electronic mutual inductor of electric resistance partial pressure technology still to have a lot of incomplete places, such as poor stability, temperature is floated greatly, easily is disturbed etc.Trace it to its cause is exactly that the characteristic of resitstance voltage divider self causes and rises, the high pressure of all employing electric resistance partial pressure technology (10kV, 35kV) electronic mutual inductor, his core parts divider resistance inevitably can be subject to the impact of distribution parameter, these distribution parameters comprise: the distributed capacitance between voltage divider height pressure arm resistance, vertical electric capacity of voltage divider body, high-field electrode is in the stray capacitance of interior high-pressure side to the voltage divider body, to high pressure, over the ground stray capacitance, voltage divider is the stray capacitance of running environment to external world respectively for the voltage divider body.The existence of these distribution parameters makes the technical parameter complicated of voltage divider just, the high pressure that applies is no longer evenly landed along the total length of voltage divider body, axial current potential no longer constant gradient evenly distributes, thereby causes actual output and theoretical value to have amplitude and phase error.On the other hand, voltage divider height pressure arm temperature-coefficient of electrical resistance, the consistance of the electric parameter performances such as voltage coefficient also is a vital factor that affects dividing potential drop.
The utility model content
Technical problem to be solved in the utility model is for the distribution parameter impact of the core parts resitstance voltage divider existence in the existing electronic mutual inductor and the deficiency of technical parameter complexity, and a kind of high-tension electricity resistance type voltage divider is provided.
The technical scheme that the utility model solves the problems of the technologies described above is as follows: a kind of high-tension electricity resistance type voltage divider comprises voltage divider body, resistive layer, buffer film, high-field electrode and ground-electrode;
Described voltage divider body shape is cylindrical shape;
Described resistive layer is covered in the voltage divider body exterior, is used for the voltage divider body is carried out equivalent potential screen;
Described buffer film is covered in the resistive layer outside, makes voltage divider have bonding and anti-stress performance;
Described high-field electrode is the loam cake shape and is located at the end that the voltage divider body is connected with high-voltage connection, is used for receiving the voltage signal of high-voltage connection transmission;
Described ground-electrode is the earth terminal that the lower cover shape is located at the voltage divider body, is used for replacing ground wire.
The beneficial effects of the utility model are: the utility model has guaranteed the standard output of voltage divider because voltage divider has been taked the technical measures such as compensation, shielding.
On the basis of technique scheme, the utility model can also be done following improvement.
Further, also be located at insulating medium layer between described voltage divider body and the resistive layer, described insulating medium layer is used for and the buffer film acting in conjunction, makes voltage divider have good bonding and anti-stress performance.
Further, the end that described high-field electrode and ground-electrode do not contact voltage divider also is respectively equipped with one and all presses radome, described electric field of all pressing radome to be used for concentrating voltage divider, and reduce the corona discharge of high-field electrode.
The beneficial effect that adopts above-mentioned further scheme is to adopt radome to improve the electromagnetism interference free performance.
Further, a silver-plated copper cap is fixed respectively at described resistive layer two ends, and described two silver-plated copper caps are respectively applied to draw high-field electrode and ground-electrode.
Further, the centre of described silver-plated copper cap has threaded hole, and is bolted respectively high-field electrode and all presses radome, ground-electrode and all press radome.
Further, described high-tension electricity resistance type voltage divider also comprises signal electrode, and described signal electrode is drawn by the dividing point of voltage divider body, and described signal electrode is used for output small voltage signal, is used for measuring, protects or monitoring.
Further, described voltage divider body is the ceramic rod that is coated with high-voltage arm resistive film and low-voltage arm resistance film, and the global design of height pressure arm resistance is for the consistance that guarantees the electric parameter performance.
Further, described high-voltage arm resistance is between 10M Ω-200M Ω, low-voltage arm resistance is that 1K Ω is between the 100K Ω, the apolegamy of described high-voltage arm resistance and low-voltage arm resistance resistance should guarantee that the electric current by resistance is the mA level, be typically chosen in 0.5-2mA, electric current by voltage divider is too large, and the long-time running meeting causes resistance to produce superheating phenomenon.
Further, the described radome of all pressing is aluminum.
Further, described insulating medium layer adopts silastic material, and monolateral thickness is 1mm-5mm; Described buffer film adopts silicone material, and its thickness is 0.1-0.5mm, and thickness can be adjusted accordingly according to the size of pour mass.
Further, described resistive layer is the cylindrical ceramic rod of a hollow, and its diameter is 16-30mm, and resistance is 100-500M Ω, should it not participate in measuring the effect of only playing equivalent potential screen, should guarantee that long-time running does not produce heat and is as the criterion.
Description of drawings
Fig. 1 is the utility model specific embodiment 1 described a kind of high-tension electricity resistance type voltage divider arrangement figure.
In the accompanying drawing, the list of parts of each label representative is as follows:
1, voltage divider body, 2, insulating medium layer, 3, resistive layer, 4, buffer film, 5, high-field electrode, 6, ground-electrode, 7, all press radome, 8, signal electrode.
Embodiment
Below in conjunction with accompanying drawing principle of the present utility model and feature are described, institute gives an actual example and only is used for explaining the utility model, is not be used to limiting scope of the present utility model.
As shown in Figure 1, the utility model specific embodiment 1 described a kind of high-tension electricity resistance type voltage divider comprises voltage divider body 1, resistive layer 3, buffer film 4, high-field electrode 5 and ground-electrode 6; Described voltage divider body 1 shape is cylindrical shape; Described resistive layer 3 is covered in voltage divider body 1 outside, is used for voltage divider body 1 is carried out equivalent potential screen; Described buffer film 4 is covered in resistive layer 3 outsides, makes voltage divider have bonding and anti-stress performance; Described high-field electrode 5 is the loam cake shape and is located at the end that voltage divider body 1 is connected with high-voltage connection, is used for receiving the voltage signal of high-voltage connection transmission; Described ground-electrode 6 is the earth terminal that the lower cover shape is located at voltage divider body 1, is used for replacing ground wire.
Described resistive layer 3 is located at voltage divider body 1 outside, is used for voltage divider body 1 is carried out equivalent potential screen; Described buffer film 4 is located at resistive layer 3 outsides, makes voltage divider have good bonding and anti-stress performance; Described high-field electrode 5 is located at the high-pressure side of the integral body of the voltage divider body 1 that is enclosed with 3 layers of resistance, is used for receiving the voltage signal that high-voltage connection sends; Described ground-electrode 6 is located at the earth terminal of the integral body of the voltage divider body 1 that is enclosed with resistive layer 3, is used for replacing ground wire.
Also be located at insulating medium layer 2 between described voltage divider body 1 and the resistive layer 3, described insulating medium layer 2 is used for and buffer film 4 actings in conjunction, makes voltage divider have good bonding and anti-stress performance.
The end that described high-field electrode 5 and ground-electrode 6 do not contact voltage divider also is respectively equipped with one and all presses radome 7, and the described radome 7 of all pressing is used for concentrating the electric field of voltage divider, and reduces the corona discharge of high-field electrode.
A silver-plated copper cap is fixed respectively at described resistive layer 3 two ends, and described two silver-plated copper caps are respectively applied to draw high-field electrode 5 and ground-electrode 6.
The centre of described silver-plated copper cap has threaded hole, and is bolted respectively high-field electrode 5 and all presses radome 7, ground-electrode 6 and all press radome 7.
Described high-tension electricity resistance type voltage divider also comprises signal electrode 8, and described signal electrode 8 is drawn by the dividing point of voltage divider body 1, and described signal electrode 8 is used for output small voltage signal, is used for measuring, protects or monitoring.。
Described voltage divider body 1 is for being coated with the ceramic rod of high-voltage arm resistive film and low-voltage arm resistance film, and the global design of height pressure arm resistance is for the consistance that guarantees the electric parameter performance.
Described high-voltage arm resistance is 70M Ω, low-voltage arm resistance is 14K Ω, the apolegamy of described high-voltage arm resistance and low-voltage arm resistance resistance should guarantee that the electric current by resistance is between the 0.5-2mA, and is too large by the electric current of voltage divider, and the long-time running meeting causes resistance to produce superheating phenomenon.
The described radome 7 of all pressing is aluminum.
Described insulating medium layer 2 adopts silastic material, and monolateral thickness is 2mm; Described buffer film 4 adopts silicone material, and its thickness is 0.2mm, and thickness can be adjusted accordingly according to the size that cast is carried.
The cylindrical ceramic rod that described resistive layer 3 is a hollow, its diameter is 18mm, resistance is 200M Ω, should it not participate in measuring the effect of only playing equivalent potential screen, should guarantee that long-time running does not produce heat and is as the criterion.
The above only is preferred embodiment of the present utility model, and is in order to limit the utility model, not all within spirit of the present utility model and principle, any modification of doing, is equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (11)
1. a high-tension electricity resistance type voltage divider comprises the voltage divider body, it is characterized in that, also comprises resistive layer, buffer film, high-field electrode and ground-electrode;
Described voltage divider body shape is cylindrical shape;
Described resistive layer is covered in the voltage divider body exterior, is used for the voltage divider body is carried out equivalent potential screen;
Described buffer film is covered in the resistive layer outside, makes voltage divider have bonding and anti-stress performance;
Described high-field electrode is the loam cake shape and is located at the end that the voltage divider body is connected with high-voltage connection, is used for receiving the voltage signal of high-voltage connection transmission;
Described ground-electrode is the earth terminal that the lower cover shape is located at the voltage divider body, is used for replacing ground wire.
2. a kind of high-tension electricity resistance type voltage divider according to claim 1, it is characterized in that, also be located at insulating medium layer between described voltage divider body and the resistive layer, described insulating medium layer is used for and the buffer film acting in conjunction, makes voltage divider have bonding and anti-stress performance.
3. a kind of high-tension electricity resistance type voltage divider according to claim 1, it is characterized in that, the end that described high-field electrode and ground-electrode do not contact voltage divider also is respectively equipped with one and all presses radome, described electric field of all pressing radome to be used for concentrating voltage divider, and reduce the corona discharge of high-field electrode.
4. a kind of high-tension electricity resistance type voltage divider according to claim 1 is characterized in that a silver-plated copper cap is fixed respectively at described resistive layer two ends, and described two silver-plated copper caps are respectively applied to draw high-field electrode and ground-electrode.
5. a kind of high-tension electricity resistance type voltage divider according to claim 4 is characterized in that the centre of described silver-plated copper cap has threaded hole, and is bolted respectively high-field electrode and all presses radome, ground-electrode and all press radome.
6. a kind of high-tension electricity resistance type voltage divider according to claim 1; it is characterized in that described high-tension electricity resistance type voltage divider also comprises signal electrode, described signal electrode is drawn by the dividing point of voltage divider body; described signal electrode is used for output small voltage signal, is used for measuring, protects or monitoring.
7. a kind of high-tension electricity resistance type voltage divider according to claim 1, it is characterized in that, described voltage divider body is the ceramic rod that is coated with high-voltage arm resistive film and low-voltage arm resistance film, and the global design of height pressure arm resistance is for the consistance that guarantees the electric parameter performance.
8. a kind of high-tension electricity resistance type voltage divider according to claim 7 is characterized in that, described high-voltage arm resistance is between 10M Ω-200M Ω, and low-voltage arm resistance is that 1K Ω is between the 100K Ω.
9. according to claim 3 or 5 described a kind of high-tension electricity resistance type voltage dividers, it is characterized in that the described radome of all pressing is aluminum.
10. a kind of high-tension electricity resistance type voltage divider according to claim 2 is characterized in that, described insulating medium layer adopts silastic material, and monolateral thickness is 1mm-5mm; Described buffer film adopts silicone material, and its thickness is 0.1-0.5mm.
11. a kind of high-tension electricity resistance type voltage divider according to claim 1 is characterized in that, described resistive layer is the cylindrical ceramic rod of a hollow, and its diameter is 16-30mm, and resistance is 100-500M Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220379292 CN202886441U (en) | 2012-08-01 | 2012-08-01 | High-voltage resistor-type voltage divider |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220379292 CN202886441U (en) | 2012-08-01 | 2012-08-01 | High-voltage resistor-type voltage divider |
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| CN202886441U true CN202886441U (en) | 2013-04-17 |
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| CN 201220379292 Expired - Fee Related CN202886441U (en) | 2012-08-01 | 2012-08-01 | High-voltage resistor-type voltage divider |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102830257A (en) * | 2012-08-01 | 2012-12-19 | 江苏博斯特科技电力有限公司 | High-voltage resistor type voltage dividing device |
| CN106199119A (en) * | 2014-08-22 | 2016-12-07 | 西门子公司 | High-tension measurement potentiometer |
-
2012
- 2012-08-01 CN CN 201220379292 patent/CN202886441U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102830257A (en) * | 2012-08-01 | 2012-12-19 | 江苏博斯特科技电力有限公司 | High-voltage resistor type voltage dividing device |
| CN106199119A (en) * | 2014-08-22 | 2016-12-07 | 西门子公司 | High-tension measurement potentiometer |
| CN106199119B (en) * | 2014-08-22 | 2019-03-15 | 西门子公司 | High-tension measurement divider |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20150801 |
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| EXPY | Termination of patent right or utility model |