CN203225145U - Non-inductive resistor for measuring high impulse voltage - Google Patents
Non-inductive resistor for measuring high impulse voltage Download PDFInfo
- Publication number
- CN203225145U CN203225145U CN 201320168040 CN201320168040U CN203225145U CN 203225145 U CN203225145 U CN 203225145U CN 201320168040 CN201320168040 CN 201320168040 CN 201320168040 U CN201320168040 U CN 201320168040U CN 203225145 U CN203225145 U CN 203225145U
- Authority
- CN
- China
- Prior art keywords
- balance winding
- iron core
- winding
- high voltage
- right balance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000004804 winding Methods 0.000 claims abstract description 49
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 23
- 238000005259 measurement Methods 0.000 claims description 4
- 230000001939 inductive effect Effects 0.000 abstract 4
- 230000035939 shock Effects 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
Images
Landscapes
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The utility model discloses a non-inductive resistor for measuring high impulse voltage, which is used for solving the technical problem that a non-inductive resistor used in a high voltage impulse test affects the waveform of a voltage impulse wave. The non-inductive resistor comprises a closed shell (2), wherein a square iron core (3) is arranged in the closed shell (2); a left balance winding (5) is arranged on a left iron core column of the square iron core (3); a right balance winding (4) is arranged on a right iron core column of the square iron core (3); the winding direction of the left balance winding (5) is the same as the winding direction of the right balance winding (4); the number of turns of the left balance winding (5) is equal to the number of turns of the right balance winding (4); the head part of the left balance winding (5) is connected with the head part of the right balance winding (4) to form a head part end (1) of the non-inductive resistor; and the tail part of the left balance winding (5) is connected with the tail part of the right balance winding (4) to form a tail part end (7) of the non-conductive resistor. The non-conductive resistor disclosed by the utility model perfectly meets the requirements of the impulse test 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 |
|---|---|---|---|
| CN 201320168040 CN203225145U (en) | 2013-04-07 | 2013-04-07 | Non-inductive resistor for measuring high impulse voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320168040 CN203225145U (en) | 2013-04-07 | 2013-04-07 | Non-inductive resistor for measuring high impulse voltage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203225145U true CN203225145U (en) | 2013-10-02 |
Family
ID=49252142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320168040 Expired - Lifetime CN203225145U (en) | 2013-04-07 | 2013-04-07 | Non-inductive resistor for measuring high impulse voltage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203225145U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103236331A (en) * | 2013-04-07 | 2013-08-07 | 国家电网公司 | Non-inductive resistor for measuring high impulse voltage |
| CN105006315A (en) * | 2015-07-31 | 2015-10-28 | 国网电力科学研究院武汉南瑞有限责任公司 | Multilayer small-size mutually inverse type non-inductive resistor |
-
2013
- 2013-04-07 CN CN 201320168040 patent/CN203225145U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103236331A (en) * | 2013-04-07 | 2013-08-07 | 国家电网公司 | Non-inductive resistor for measuring high impulse voltage |
| CN103236331B (en) * | 2013-04-07 | 2015-10-14 | 国家电网公司 | Measure the noninductive resistance impacting high voltage |
| CN105006315A (en) * | 2015-07-31 | 2015-10-28 | 国网电力科学研究院武汉南瑞有限责任公司 | Multilayer small-size mutually inverse type non-inductive resistor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203406161U (en) | Hollow coil with closed magnetic circuit and resistance voltage divider combined electronic instrument transformer | |
| CN202258772U (en) | Epoxy pouring totally-closed support type electronic combined transformer for centrally installed switchgear | |
| CN203225145U (en) | Non-inductive resistor for measuring high impulse voltage | |
| CN103050234B (en) | Dry-type transformer | |
| CN202929092U (en) | High-precision Rogowski coil current transformer | |
| CN103236331B (en) | Measure the noninductive resistance impacting high voltage | |
| CN204558229U (en) | A kind of epoxy resin pouring shielding isolating voltage mutual inductor | |
| CN203277050U (en) | Demagnetization coil structure applied to three-main-post parallel transformer | |
| CN203799847U (en) | High-precision outdoor pole-mounted switch zero-sequence current transformer | |
| CN207542046U (en) | A kind of transformation, inductance integrating device | |
| CN205069304U (en) | Supporting high insulating transformer of power switch cabinet device | |
| CN104166117A (en) | High-current synthesis circuit of electronic current transformer | |
| CN201918253U (en) | Electric current mutual inductor | |
| CN204558228U (en) | Voltage transformer | |
| CN202977062U (en) | Video interference suppressor | |
| CN202601407U (en) | High-voltage electronic type voltage transformer | |
| CN202307492U (en) | Indoor current transformer | |
| CN206293268U (en) | The novel capacitor type structure of oil-immersed current transformer first winding | |
| CN107192974B (en) | Integrated voltage and current standard transformer | |
| CN201638667U (en) | Anti-resonant voltage transformer | |
| CN201956185U (en) | Novel permalloy mutual inductor | |
| CN103606449A (en) | High-precision current transformer | |
| CN204257348U (en) | Voltage transformer | |
| CN204177951U (en) | The resource integrated device of a kind of anti-interference digital high voltage table calibration table | |
| CN203871166U (en) | High saturation flux density anti-resonance voltage transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131002 Effective date of abandoning: 20151014 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |