CN103236331A - Non-inductive resistor for measuring high impulse voltage - Google Patents
Non-inductive resistor for measuring high impulse voltage Download PDFInfo
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- CN103236331A CN103236331A CN2013101174843A CN201310117484A CN103236331A CN 103236331 A CN103236331 A CN 103236331A CN 2013101174843 A CN2013101174843 A CN 2013101174843A CN 201310117484 A CN201310117484 A CN 201310117484A CN 103236331 A CN103236331 A CN 103236331A
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- iron core
- winding
- balance winding
- balancing winding
- inductive resistor
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Abstract
The invention discloses a non-inductive resistor for measuring a high impulse voltage to overcome the technical problem that a conventional non-inductive resistor used in high voltage impulse test influences the wave shape of a test voltage impulse wave. The non-inductive resistor provided by the invention comprises an enclosed shell (2). A square-shape iron core (3) is arranged in the enclosed shell (2). A left balancing winding (5) is arranged on a left iron core column of the square-shape iron core (3), and a right balancing winding (4) is arranged on a right iron core column of the square-shape iron core (3), wherein winding directions of the left balancing winding (5) and the right balancing winding (4) are identical, numbers of windings of the left balancing winding (5) and the right balancing winding (4) are equal, the heads of both the left balancing winding (5) and the right balancing winding (4) are connected to form a head end (1) of the non-inductive resistor, and the tails of both the left balancing winding (5) and the right balancing winding (4) are connected to form a tail end (7) of the non-inductive resistor. The non-inductive resistor perfectly meets requirements of impulse tests of extra-high voltage equipment.
Description
Technical field
The present invention relates to a kind of noninductive resistance, particularly a kind of at the noninductive resistance that super, ultra high voltage converting equipment are used when carrying out the high voltage shock test.
Background technology
In field of power, according to the relevant technologies standard, when super, ultra high voltage converting equipment are carried out high voltage impact (lightning impulse, switching impulse) test, need the impact high voltage to measure, generally be to adopt resitstance voltage divider to carry out.In order to reach the high responsiveness energy, generally requiring resistance is noninductive resistance, existing noninductive resistance all is to adopt two-wire and on a cylindrical core, there is certain leakage field, causes relatively large inductance, in the high voltage shock test, this noninductive resistance can influence waveform and the half-peak value time of test voltage shock wave, in addition, the thermal capacity of this resistance is less, can not satisfy the requirement of extra-high voltage equipment shock test.
Summary of the invention
The invention provides a kind of the measurement and impact the noninductive resistance that high voltage is used, solved the technical problem that in the high voltage shock test employed noninductive resistance influences the waveform of test voltage shock wave.
A kind of measurement impacted the noninductive resistance that high voltage is used, comprise closure casing, in closure casing, be provided with the square shape iron core, the left iron core post of square shape iron core is provided with left balance winding, the right iron core rod of square shape iron core is provided with right balance winding, left side balance winding around to right balance winding around to being identical, the number of turn of left side balance winding equates with the number of turn of right balance winding, the head of left side balance winding is connected the head end that noninductive resistance is formed in the back with the head of right balance winding, the afterbody of left balance winding is connected the afterbody end that noninductive resistance is formed in the back with the afterbody of right balance winding.
Being full of in closure casing has insulating oil.
The present invention greatly reduces in the high voltage shock test the waveform influence of test voltage shock wave, has satisfied the requirement of extra-high voltage equipment shock test well.
Description of drawings
Fig. 1 is structural representation of the present invention.
Embodiment
The present invention will be described below in conjunction with accompanying drawing:
A kind of measurement impacted the noninductive resistance that high voltage is used, comprise closure casing 2, in closure casing 2, be provided with square shape iron core 3, the left iron core post of square shape iron core 3 is provided with left balance winding 5, the right iron core rod of square shape iron core 3 is provided with right balance winding 4, left side balance winding 5 around to right balance winding 4 around to being identical, the number of turn of left side balance winding 5 equates with the number of turn of right balance winding 4, the head of left side balance winding 5 is connected the head end 1 that noninductive resistance is formed in the back with the head of right balance winding 4, the afterbody of left balance winding 5 is connected the afterbody end 7 that noninductive resistance is formed in the back with the afterbody of right balance winding 4.
Being full of in closure casing 2 has insulating oil 6.
The present invention is by balance winding N1 and another balance winding N2 of two equal turn numbers, and the main flux that they produce is separately cancelled out each other, and leakage field greatly reduces just because of the coupling between two balance windings, has therefore significantly reduced the inductance value of resistance.Under the situation that turn-to-turn insulation allows, dwindle the turn-to-turn distance as much as possible, can further reduce inductance value, of the present invention mainly is by the electromagnetic coupled principle, has reduced the leakage field of wire resistor, and the inductance value of resistance is further reduced.Be full of insulating oil in fuel tank, the thermal capacity of noninductive resistance can improve about 40%.
Two balance windings of the present invention are around to identical, equal turn numbers, and resistance also equates, is enclosed within respectively on the left and right iron core column of square shape iron core 3.When head end 1 galvanization of noninductive resistance, balance winding N1, N2 equal turn numbers, when they around when identical, will produce main flux at iron core when through-flow, equal and opposite in direction, direction is opposite, both cancel out each other.Therefore the electric current of balance winding is provided by the leakage field kinetic potential, and these two winding coupled are tight, has therefore significantly reduced inductance value.
Claims (2)
1. measure the noninductive resistance that the impact high voltage is used for one kind, comprise closure casing (2), in closure casing (2), be provided with square shape iron core (3), the left iron core post of square shape iron core (3) is provided with left balance winding (5), the right iron core rod of square shape iron core (3) is provided with right balance winding (4), it is characterized in that, left side balance winding (5) around to right balance winding (4) around to being identical, the number of turn of left side balance winding (5) equates with the number of turn of right balance winding (4), the head of left side balance winding (5) is connected the head end (1) that noninductive resistance is formed in the back with the head of right balance winding (4), the afterbody of left balance winding (5) is connected the afterbody end (7) that noninductive resistance is formed in the back with the afterbody of right balance winding (4).
2. a kind of measurement the according to claim 1 impacted the noninductive resistance that high voltage is used, and it is characterized in that being full of in closure casing (2) has insulating oil (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310117484.3A CN103236331B (en) | 2013-04-07 | 2013-04-07 | Measure the noninductive resistance impacting high voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310117484.3A CN103236331B (en) | 2013-04-07 | 2013-04-07 | Measure the noninductive resistance impacting high voltage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103236331A true CN103236331A (en) | 2013-08-07 |
| CN103236331B CN103236331B (en) | 2015-10-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310117484.3A Active CN103236331B (en) | 2013-04-07 | 2013-04-07 | Measure the noninductive resistance impacting high voltage |
Country Status (1)
| Country | Link |
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| CN (1) | CN103236331B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107331485A (en) * | 2017-05-16 | 2017-11-07 | 东莞市晴远电子有限公司 | A kind of noninductive resistance and its manufacture method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB168238A (en) * | 1920-08-11 | 1921-09-01 | Gen Electric | Improvements in and relating to electric resistance devices |
| US5555246A (en) * | 1993-02-16 | 1996-09-10 | Landis & Gyr Business Support Ag | Process for the production of a balanced wire resistor |
| CN201348909Y (en) * | 2008-12-31 | 2009-11-18 | 中国电力科学研究院 | Damping resistance for high-power electric power electronic device |
| CN203225145U (en) * | 2013-04-07 | 2013-10-02 | 国家电网公司 | Non-inductive resistor for measuring high impulse voltage |
-
2013
- 2013-04-07 CN CN201310117484.3A patent/CN103236331B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB168238A (en) * | 1920-08-11 | 1921-09-01 | Gen Electric | Improvements in and relating to electric resistance devices |
| US5555246A (en) * | 1993-02-16 | 1996-09-10 | Landis & Gyr Business Support Ag | Process for the production of a balanced wire resistor |
| CN201348909Y (en) * | 2008-12-31 | 2009-11-18 | 中国电力科学研究院 | Damping resistance for high-power electric power electronic device |
| CN203225145U (en) * | 2013-04-07 | 2013-10-02 | 国家电网公司 | Non-inductive resistor for measuring high impulse voltage |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107331485A (en) * | 2017-05-16 | 2017-11-07 | 东莞市晴远电子有限公司 | A kind of noninductive resistance and its manufacture method |
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| Publication number | Publication date |
|---|---|
| CN103236331B (en) | 2015-10-14 |
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