CN111443752A - Fine adjustment device for voltage output quantity of direct current standard source - Google Patents
Fine adjustment device for voltage output quantity of direct current standard source Download PDFInfo
- Publication number
- CN111443752A CN111443752A CN202010313432.3A CN202010313432A CN111443752A CN 111443752 A CN111443752 A CN 111443752A CN 202010313432 A CN202010313432 A CN 202010313432A CN 111443752 A CN111443752 A CN 111443752A
- Authority
- CN
- China
- Prior art keywords
- voltage
- resistor
- output
- standard source
- low
- 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.)
- Pending
Links
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 13
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 238000004026 adhesive bonding Methods 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 6
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 6
- 230000001105 regulatory effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 229910000914 Mn alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- HPDFFVBPXCTEDN-UHFFFAOYSA-N copper manganese Chemical compound [Mn].[Cu] HPDFFVBPXCTEDN-UHFFFAOYSA-N 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
The invention relates to the technical field of electric energy measuring instruments, in particular to a refined adjusting device for voltage output quantity of a direct-current standard source. The invention is provided with a shell outside a resistor divider, wherein the resistor divider comprises a high-voltage arm resistor and a low-voltage arm resistor, and the high-voltage arm resistor and the low-voltage arm resistor are connected through a line; one end of the resistance voltage divider is connected with the output end of the direct current standard source, and the other end of the resistance voltage divider is connected with the input end of the direct current standard voltmeter. The invention effectively solves the problem that the DC standard source can not output smaller voltage signals, and improves the output voltage resolution of the DC standard source. The invention has the characteristics of simple structure, reasonable design, low cost and capital saving. The method is suitable for popularization and application in related power systems, and has considerable application prospect.
Description
Technical Field
The invention relates to the technical field of electric energy measuring instruments, in particular to a refined adjusting device for voltage output quantity of a direct-current standard source.
Background
According to the requirements of the power industry standard D L/T1112-2009 verification regulations for AC and DC instrument inspection devices, a direct comparison method which takes a DC standard source as a device to be inspected and a DC standard voltmeter as a standard is generally adopted for measuring the voltage error of the DC standard source.
Disclosure of Invention
In view of the problems in the prior art, the invention provides a fine adjustment device for the voltage output of a dc standard source, which aims to achieve the precise output function of a small voltage signal of the dc standard source through the voltage division of a dc standard resistor.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a shell is arranged outside a resistance voltage divider, the resistance voltage divider comprises a high-voltage arm resistor and a low-voltage arm resistor, and the high-voltage arm resistor and the low-voltage arm resistor are connected through a line; one end of the resistance voltage divider is connected with the output end of the direct current standard source, and the other end of the resistance voltage divider is connected with the input end of the direct current standard voltmeter.
The output end of the direct current standard source is connected with the input end of the resistance voltage divider in a four-port connection mode, and a circuit is a copper conducting wire.
The + stage of the high-voltage arm resistor is simultaneously connected with the output 1+ of the direct-current standard source and the output 2+ of the direct-current standard source; the negative electrode of the high-voltage arm resistor is connected with the positive electrode of the low-voltage arm resistor in a gold-plated copper mode, and the high-voltage arm resistor is connected with the input positive electrode of the direct-current standard voltmeter through a copper lead.
And the stage-one of the low-voltage arm resistor is connected with the output 1-of the direct current standard source and the output 2-of the direct current standard source, and the low-voltage arm resistor is connected with the input stage-one of the direct current standard voltmeter through a copper wire.
The resistor voltage divider is formed by gluing tetrafluoroethylene insulation plates, and the high end of a high-voltage arm resistor, the low end of a low-voltage arm resistor and the high-low voltage connecting end of the resistor voltage divider are fixed by the tetrafluoroethylene insulation plates through gluing.
The resistance value of the high-voltage arm is 9 ohms, and the resistance value of the low-voltage arm is 1 ohm; the accuracy of the high-voltage arm resistor and the low-voltage arm resistor is 0.003 level, and the accuracy level of the resistor divider is 0.01 level.
The ratio of the resistance values of the high-voltage arm resistor and the low-voltage arm resistor is 9:1, and the device outputs a DC voltage value of 1/10 which is the minimum value of the DC standard source.
The resistance voltage divider shell adopts 6063 type aluminum alloy, and the shell thickness is 1 mm.
The resistance voltage divider and the shell adopt an air isolation mode.
The input line and the output line at two ends of the resistor divider extend out of the shell through the small holes; glue is filled between the input line and the output line at two ends of the resistance voltage divider and the small hole on the shell.
The invention has the advantages and beneficial effects that:
the invention effectively solves the problem that the DC standard source can not output smaller voltage signals, and improves the output voltage resolution of the DC standard source. The invention has the characteristics of simple structure, reasonable design, low cost and capital saving. The method is suitable for popularization and application in related power systems, and has considerable application prospect.
Drawings
The invention will be described in further detail with reference to the drawings and specific embodiments for facilitating understanding and practicing of the invention by those of ordinary skill in the art, but it should be understood that the scope of the invention is not limited by the specific embodiments.
FIG. 1 is a system wiring diagram of the present invention;
fig. 2 is a schematic diagram of the structure of the resistor divider of the present invention.
Detailed Description
The disclosure will be further explained with reference to the drawings. It is specifically intended that the following description be regarded as illustrative in nature and not as restrictive in any way, since it is intended to limit the disclosure to the precise form disclosed and illustrated. Unless specifically stated otherwise, the relative arrangement of components and steps and numerical expressions and values set forth in the embodiments do not limit the scope of the present disclosure. Additionally, techniques, methods, and apparatus known to those skilled in the art may not be discussed in detail but are intended to be part of the specification where appropriate.
The invention relates to a refined adjusting device for the voltage output quantity of a direct current standard source, which mainly comprises a resistance voltage divider and a shell, wherein the shell is arranged outside the resistance voltage divider, the resistance voltage divider and the shell adopt an air isolation mode, and air is used as a medium to realize the electrical insulation among all components of a circuit. The resistance voltage divider comprises a high-voltage arm resistor and a low-voltage arm resistor, and the high-voltage arm resistor and the low-voltage arm resistor are connected through a line. The high end of the high-voltage arm resistor of the resistor voltage divider and the low end of the low-voltage arm resistor are tightly connected by the shell and fixed by glue. The shell is provided with a small hole, and the input line and the output line at two ends of the resistor divider extend out of the shell through the small hole. Glue is filled between the input line and the output line at two ends of the resistance voltage divider and the small holes in the shell, so that the input line and the output line are bonded, and the shell can be fixed.
In specific implementation, one end of the regulating device is connected with the output end of the direct current standard source, and the other end of the regulating device is connected with the input end of the direct current standard voltmeter.
The structure of the resistor voltage divider is shown in fig. 2, the resistor voltage divider is formed by gluing tetrafluoroethylene insulation plates, namely, the high end of a high-voltage arm resistor, the low end of a low-voltage arm resistor and the high-low voltage connecting ends of the resistor voltage divider are fixed by the tetrafluoroethylene insulation plates through gluing.
The + stage of the high-voltage arm resistor is simultaneously connected with the output 1+ of the direct-current standard source and the output 2+ of the direct-current standard source; the negative pole of the high-voltage arm resistor is connected with the positive pole of the low-voltage arm resistor in a 4mm gold-plated copper mode, and the high-voltage arm resistor is connected with the input positive pole of the direct-current standard voltmeter through a 4-square copper wire. And the stage-one of the low-voltage arm resistor is connected with the output 1-of the direct current standard source and the output 2-of the direct current standard source, and the low-voltage arm resistor is simultaneously connected with the input stage-one of the direct current standard voltmeter through a 4-square copper wire.
The ratio of the resistance values of the high-voltage arm and the low-voltage arm is 9:1, so that the device can output a DC voltage value of 1/10 which is the minimum value of the DC standard source as a whole.
As shown in fig. 1, fig. 1 is a wiring diagram of the system of the present invention. The output end of the direct current standard source is connected with the input end of the regulating device, and a four-port connection mode is adopted; the output end of the regulating device is connected with the input end of the standard direct current voltmeter.
Because the accuracy level of the direct current standard source is usually 0.05 level, in order to ensure that the error of the resistor voltage divider is negligible relative to the error of the direct current standard source, the accuracy level of the resistor voltage divider is above 0.01 level. The wiring adopts four-port wiring system, and the circuit adopts 4 square copper wires to reduce the influence of circuit resistance on the output circuit. Therefore, the high-voltage arm standard resistor and the low-voltage arm standard resistor both adopt high-precision standard resistors of RS3 series of Shanghai Bei Han electronic Limited company. The resistor is composed of a copper-manganese alloy wire with a low temperature coefficient, and a coil is surrounded in a stress-free mode. The resistance of the high-voltage arm is 9 omega, and the resistance of the low-voltage arm is 1 omega. The accuracy of the high-voltage arm resistor and the low-voltage arm resistor can reach 0.003 level, and a 4mm gold-plated copper mode is adopted between the output and input port and the high-voltage and low-voltage resistor arms, so that the accuracy level of the whole resistor voltage divider can reach 0.01 level. The resistance voltage divider shell adopts 6063 type aluminum alloy, and the shell thickness is 1mm, guarantees the holistic thermal diffusivity of device.
The method has the remarkable advantages of high safety and reliability, wide engineering applicability, strong parameter controllability and the like.
While the present disclosure has been described with reference to exemplary embodiments, it should be understood that the present disclosure is not limited to the exemplary embodiments described above. It will be apparent to those skilled in the art that the above-described exemplary embodiments may be modified without departing from the scope and spirit of the disclosure. The scope of the following claims is to be accorded the broadest interpretation so as to encompass all such modifications and equivalent structures and functions.
Claims (10)
1. A kind of direct current standard source voltage output quantity fine regulation device, its characteristic is: the outer part of the resistor divider is provided with a shell, the resistor divider comprises a high-voltage arm resistor and a low-voltage arm resistor, and the high-voltage arm resistor and the low-voltage arm resistor are connected through a line; one end of the resistance voltage divider is connected with the output end of the direct current standard source, and the other end of the resistance voltage divider is connected with the input end of the direct current standard voltmeter.
2. The apparatus of claim 1, wherein the apparatus for fine tuning of the output of the dc standard source voltage comprises: the output end of the direct current standard source is connected with the input end of the resistance voltage divider in a four-port connection mode, and a circuit is a copper conducting wire.
3. The apparatus of claim 1, wherein the apparatus for fine tuning of the output of the dc standard source voltage comprises: the + stage of the high-voltage arm resistor is simultaneously connected with the output 1+ of the direct-current standard source and the output 2+ of the direct-current standard source; the negative electrode of the high-voltage arm resistor is connected with the positive electrode of the low-voltage arm resistor in a gold-plated copper mode, and the high-voltage arm resistor is connected with the input positive electrode of the direct-current standard voltmeter through a copper lead.
4. The apparatus of claim 1, wherein the apparatus for fine tuning of the output of the dc standard source voltage comprises: and the stage-one of the low-voltage arm resistor is connected with the output 1-of the direct current standard source and the output 2-of the direct current standard source, and the low-voltage arm resistor is connected with the input stage-one of the direct current standard voltmeter through a copper wire.
5. The apparatus of claim 1, wherein the apparatus for fine tuning of the output of the dc standard source voltage comprises: the resistor voltage divider is formed by gluing tetrafluoroethylene insulation plates, and the high end of a high-voltage arm resistor, the low end of a low-voltage arm resistor and the high-low voltage connecting end of the resistor voltage divider are fixed by the tetrafluoroethylene insulation plates through gluing.
6. The apparatus of claim 1, wherein the apparatus for fine tuning of the output of the dc standard source voltage comprises: the resistance value of the high-voltage arm is 9 ohms, and the resistance value of the low-voltage arm is 1 ohm; the accuracy of the high-voltage arm resistor and the low-voltage arm resistor is 0.003 level, and the accuracy level of the resistor divider is 0.01 level.
7. The apparatus of claim 1, wherein the apparatus for fine tuning of the output of the dc standard source voltage comprises: the ratio of the resistance values of the high-voltage arm resistor and the low-voltage arm resistor is 9:1, and the device outputs a DC voltage value of 1/10 which is the minimum value of the DC standard source.
8. The apparatus of claim 1, wherein the apparatus for fine tuning of the output of the dc standard source voltage comprises: the resistance voltage divider shell adopts 6063 type aluminum alloy, and the shell thickness is 1 mm.
9. The apparatus of claim 1, wherein the apparatus for fine tuning of the output of the dc standard source voltage comprises: the resistance voltage divider and the shell adopt an air isolation mode.
10. The apparatus of claim 1, wherein the apparatus for fine tuning of the output of the dc standard source voltage comprises: the input line and the output line at two ends of the resistor divider extend out of the shell through the small holes; glue is filled between the input line and the output line at two ends of the resistance voltage divider and the small hole on the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010313432.3A CN111443752A (en) | 2020-04-20 | 2020-04-20 | Fine adjustment device for voltage output quantity of direct current standard source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010313432.3A CN111443752A (en) | 2020-04-20 | 2020-04-20 | Fine adjustment device for voltage output quantity of direct current standard source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111443752A true CN111443752A (en) | 2020-07-24 |
Family
ID=71652092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010313432.3A Pending CN111443752A (en) | 2020-04-20 | 2020-04-20 | Fine adjustment device for voltage output quantity of direct current standard source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111443752A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2314423B2 (en) * | 1973-03-23 | 1975-09-25 | Robert Bosch Gmbh, 7000 Stuttgart | DC reference voltage source and process for its manufacture |
| DE2845013A1 (en) * | 1977-11-01 | 1979-05-23 | Pungas | REFERENCE VOLTAGE SOURCE |
| CN101713791A (en) * | 2009-12-23 | 2010-05-26 | 中国航天科技集团公司第五研究院第五一四研究所 | Correction method of nonlinear output of DC low-voltage standard source |
| CN202003791U (en) * | 2011-01-29 | 2011-10-05 | 李涛 | Digital standard magnetic field generator |
| CN103424729A (en) * | 2013-07-24 | 2013-12-04 | 中国电力科学研究院 | On-site calibration device for direct-current voltage transformer |
| CN104571238A (en) * | 2013-10-25 | 2015-04-29 | 珠海格力电器股份有限公司 | Voltage adjusting circuit |
| CN211857320U (en) * | 2020-04-20 | 2020-11-03 | 国网辽宁省电力有限公司电力科学研究院 | Fine adjustment device for voltage output quantity of direct current standard source |
-
2020
- 2020-04-20 CN CN202010313432.3A patent/CN111443752A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2314423B2 (en) * | 1973-03-23 | 1975-09-25 | Robert Bosch Gmbh, 7000 Stuttgart | DC reference voltage source and process for its manufacture |
| DE2845013A1 (en) * | 1977-11-01 | 1979-05-23 | Pungas | REFERENCE VOLTAGE SOURCE |
| CN101713791A (en) * | 2009-12-23 | 2010-05-26 | 中国航天科技集团公司第五研究院第五一四研究所 | Correction method of nonlinear output of DC low-voltage standard source |
| CN202003791U (en) * | 2011-01-29 | 2011-10-05 | 李涛 | Digital standard magnetic field generator |
| CN103424729A (en) * | 2013-07-24 | 2013-12-04 | 中国电力科学研究院 | On-site calibration device for direct-current voltage transformer |
| CN104571238A (en) * | 2013-10-25 | 2015-04-29 | 珠海格力电器股份有限公司 | Voltage adjusting circuit |
| CN211857320U (en) * | 2020-04-20 | 2020-11-03 | 国网辽宁省电力有限公司电力科学研究院 | Fine adjustment device for voltage output quantity of direct current standard source |
Non-Patent Citations (1)
| Title |
|---|
| 赵科义等: "《电磁动能武器电源技术》", 31 December 2015, 兵器工业出版社, pages: 269 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110749850A (en) | Method and system for testing transient step response time of direct-current electronic voltage transformer | |
| EP3796006A1 (en) | Adjustable voltage sensor | |
| CN211857320U (en) | Fine adjustment device for voltage output quantity of direct current standard source | |
| CN202018479U (en) | High-precision testing device for portable-type loop resistor | |
| CN102445583B (en) | Voltage signal monitoring device of power energy quality monitoring device and circuit as well as application thereof | |
| CN102967809A (en) | Corona resistance testing device and method for varnished wires | |
| CN110275125B (en) | System and method for calibrating dynamic characteristics of impulse current measuring device | |
| CN111443752A (en) | Fine adjustment device for voltage output quantity of direct current standard source | |
| Votzi et al. | Low-cost current sensor for power capacitors based on a PCB Rogowski-coil | |
| CN106872755B (en) | For measuring the monitoring device of low-frequency current in inductive load | |
| CN104267232B (en) | A kind of non-cpntact measurement capacitance sensor lower frequency limit extension system | |
| Ouameur et al. | Design and Modelling of a Shunt for Current Measurements at 10 A and up to 1 MHz: a theoretical approach | |
| CN203479880U (en) | Open type impedance matching connector used for pulse high current measurement | |
| CN214041542U (en) | Constant current circuit for direct current resistance tester | |
| CN116027104A (en) | System and method for high-precision on-site testing of load loss of power transformer | |
| CN206756937U (en) | Cable dielectric loss ageing state tester | |
| CN214310655U (en) | Multichannel program-controlled 4-range electric signal differential isolation converter and data recorder | |
| CN103646766A (en) | Ultra-thin large current transformer | |
| CN201607516U (en) | Current-type load testing device of power supply filter | |
| CN206420938U (en) | A kind of coaxial type capacitance-resistance integrator | |
| CN217698628U (en) | Nanosecond electric pulse desulfurization/nitre reactor | |
| JP3176973U (en) | Shunt, calibration current generator, and calibrated current generator | |
| CN219456327U (en) | Direct-current input voltage sampling circuit with high isolation performance | |
| CN204758808U (en) | A general short circuiter for digital multimeter calibrates zero point | |
| CN211603533U (en) | Novel calibration of ground connection on resistance tester device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |