CN109633278B - Capacitor device - Google Patents
Capacitor device Download PDFInfo
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- CN109633278B CN109633278B CN201811591769.XA CN201811591769A CN109633278B CN 109633278 B CN109633278 B CN 109633278B CN 201811591769 A CN201811591769 A CN 201811591769A CN 109633278 B CN109633278 B CN 109633278B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/08—Measuring resistance by measuring both voltage and current
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
- G01R27/2605—Measuring capacitance
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
- G01R27/2611—Measuring inductance
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- Measurement Of Resistance Or Impedance (AREA)
Abstract
The invention discloses a capacitor device, which comprises a test body, a collecting terminal, a laser reinforcing device and a movable current clamp, wherein the test body is provided with a test hole; the test body consists of a bearing shell, a control integrated electric plate, a range control device, an A/D converter, a microprocessor, a programmable power supply and a touch screen display; the control integrated circuit board is provided with an output wiring board, a current input wiring terminal, a thermal printer and a range knob, wherein the output wiring board is provided with a current output terminal I, a current output terminal II, a voltage output terminal I and a voltage output terminal II; the invention adopts a programmable power supply with small voltage to supply power to the femtosecond laser emitter to emit laser with high energy, and the laser can increase the electric fields generated by the first test terminal and the second test terminal which are connected with two electrodes of an external capacitor to be detected, thereby providing high detection voltage without separately connecting an external 220V external power supply.
Description
Technical Field
The invention relates to the technical field of parallel capacitance and inductance testing, in particular to a capacitance device.
Background
In order to reduce reactive loss, a power system usually adopts a method of parallel capacitor banks to improve the power factor. In practical applications, the accident rate of the capacitor compensation device is relatively high, which is determined by the characteristics of the working state of the capacitor device. Therefore, it is very important to detect the capacitor device regularly, detect the capacitor defect early, and avoid the fault expansion.
The capacitors are connected in parallel in groups on site, so that the measurement can be carried out only after the lead is removed by using a common capacitance meter, the workload is large, and wiring errors are easily caused; meanwhile, the detection side capacitor device needs a 220V power supply to provide test voltage and current to measure the capacitor and the inductor, needs an external 220V power supply to be connected independently, and is complex and poor in safety coefficient; meanwhile, a complex amplifying circuit is needed to amplify the current and voltage generated by the capacitor, so that the accuracy is poor; the present invention thus provides a capacitive device.
Disclosure of Invention
The present invention is directed to a capacitor device to solve the above problems.
In order to achieve the purpose, the invention provides the following technical scheme:
a capacitor device comprises a test body, a collecting terminal, a laser reinforcing device and a movable current clamp;
the test body consists of a bearing shell, a control integrated electric plate, a range control device, an A/D converter, a microprocessor, a programmable power supply and a touch screen display;
the control integrated circuit board is provided with an output wiring board, a current input wiring terminal, a thermal printer and a range knob, wherein the output wiring board is provided with a current output terminal I, a current output terminal II, a voltage output terminal I and a voltage output terminal II;
the collecting terminal comprises a first testing terminal and a second testing terminal, one end of each of the first testing terminal and the second testing terminal is connected with two connector lugs, one connector lug on the first testing terminal is connected with the first current output terminal, the other connector lug is connected with the first voltage output terminal, one connector lug on the second testing terminal is connected with the second current output terminal, and the other connector lug is connected with the second voltage output terminal;
the laser enhancement device comprises an integrated board and a femtosecond laser transmitter, wherein the integrated board is provided with a sinking groove, the femtosecond laser transmitter is nested in the sinking groove, and one end of the femtosecond laser transmitter is provided with a vacuum transparent cover;
the clamp-shaped inner wall of the movable current clamp is provided with two reinforced vacuum tubes, and one ends of the vacuum transparent cover and the reinforced vacuum tubes are provided with optical fiber couplers and are connected through laser optical fibers.
In a preferred embodiment of the present invention, the output terminal block, the range control device, the a/D converter, and the microprocessor are connected in series by electric wires.
In a preferred embodiment of the present invention, the programmable power supply is connected to the microprocessor, the output terminal board, and the femtosecond laser transmitter through wires.
In a preferred embodiment of the present invention, the microprocessor is connected to the touch screen display, the current input terminals, the thermal printer and the range knob through wires.
As a preferred embodiment of the present invention, the range knob includes a capacitance knob, an inductance knob, and a resistance knob.
As a preferred embodiment of the invention, the control integrated circuit board is provided with a USB interface and a fuse tube which are connected with the microprocessor through wires.
As a preferred embodiment of the present invention, the touch screen display may display a capacitance control module, an inductance control module, a resistance control module, and a storage module.
As a preferred embodiment of the present invention, the capacitance control module may display real-time capacitance detection current, capacitance detection voltage and capacitance, the inductance control module may display real-time inductance detection current, inductance detection voltage and inductance, the resistance control module may display real-time resistance detection current, resistance detection voltage and resistance value, and the storage module may store data measured by capacitance, inductance and resistance.
Compared with the prior art, the invention has the beneficial effects that:
1. the programmable power supply with small voltage is adopted to supply power to the femtosecond laser transmitter to emit laser with high energy, the laser can increase electric fields generated by connecting a first test terminal and a second test terminal with two electrodes of an external capacitor to be detected, so that high detection voltage can be provided, and the method does not need to be separately externally connected with a 220V external power supply;
2. the femtosecond laser emitter irradiates in the vacuum transparent cover, so that the laser power is not attenuated, and the laser power is transmitted into the two enhanced vacuum tubes on the movable current clamp through the laser fiber, and the energy generated by the laser can increase the induced current generated by the conductive coil in the movable current clamp, so that an independent amplifying circuit is not needed, and the circuit distribution is simplified;
3. the first current output terminal, the second current output terminal, the first voltage output terminal and the second voltage output terminal on the control integrated circuit board are in staggered connection with the first test terminal and the second test terminal in the acquisition terminals and are matched with the movable current clamp, so that the inductance, the capacitance and the resistance can be detected, and the function that three acquisition heads detect a plurality of data is realized.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of a test body according to the present invention;
FIG. 3 is a schematic structural view of the collecting terminal of the present invention
In the figure: 1-test body, 11-bearing shell, 12-control integrated electric board, 121-output wiring board, 1211-current output terminal I, 1212-current output terminal II, 1213-voltage output terminal I, 1214-voltage output terminal II, 122-current input wiring terminal, 123-thermal printer, 124-range knob, 125-USB interface, 126-protective tube, 13-range control device, 14-A/D converter, 15-microprocessor, 16-programmable power supply, 17-touch screen display, 2-acquisition terminal, 21-first test terminal, 22-second test terminal, 3-laser enhancement device, 31-integrated board, 32-femtosecond laser emitter, 321-vacuum transparent cover, 121-vacuum transparent cover, 4-moving current clamp, 41-reinforcing vacuum tube.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution:
a capacitor device comprises a test body 1, a collection terminal 2, a laser reinforcing device 3 and a movable current clamp 4; the acquisition terminal 2 is used for connecting a capacitor, an inductor or a resistor to be detected, the laser enhancement device 3 is used for improving detection voltage and enhancing induced current, and the test body 1 is mainly responsible for processing collected signals;
the test body 1 consists of a bearing shell 11, a control integrated electric plate 12, a range control device 13, an A/D converter 14, a microprocessor 15, a programmable power supply 16 and a touch screen display 17; the control integrated circuit board 12 is used as an operation panel for detecting input and output, the A/D converter 14 is used for converting analog signals such as voltage, current and the like into digital signals which are convenient for the microprocessor 15 to process, the range control device 13 is used for providing different input voltages and currents corresponding to capacitors, inductors and resistors with different levels, and the touch screen display 17 can input and display corresponding detection values such as capacitors, inductors and the like;
the control integrated circuit board 12 is provided with an output wiring board 121, a current input wiring terminal 122, a thermal printer 123 and a range knob 124, and the output wiring board 121 is provided with a first current output terminal 1211, a second current output terminal 1212, a first voltage output terminal 1213 and a second voltage output terminal 1214; the output terminal board 121 is used for providing detected voltage and current to the detected object, the thermal printer 123 can print out the values of the detected capacitance, inductance and resistance, and the range knob 124 is used for controlling the range control device 13 to convert the detected voltage and current.
The acquisition terminal 2 comprises a first test terminal 21 and a second test terminal 22, two wire connectors are connected to one ends of the first test terminal 21 and the second test terminal 22, one wire connector on the first test terminal 21 is connected with the first current output terminal 1211, the other wire connector is connected with the first voltage output terminal 1213, one wire connector on the second test terminal 22 is connected with the second current output terminal 1212, and the other wire connector is connected with the second voltage output terminal 1214; the first test terminal 21 and the second test terminal 22 are respectively connected with two electrodes on the capacitor to be detected, the cross connection mode can provide detection voltage and detection current for the capacitor to be detected, the disconnection state of an external capacitor is not needed, the use is convenient, and the connection method of the measurement inductor and the resistance is also the connection method;
the laser reinforcing device 3 is composed of an integrated board 31 and a femtosecond laser emitter 32, a sinking groove is formed in the integrated board 31, the femtosecond laser emitter 32 is embedded in the sinking groove, and a vacuum transparent cover 321 is arranged at one end of the femtosecond laser emitter 32; the laser reinforcing device 3 is placed between two electrodes of the parallel capacitor to be detected, the electric field formed after the detection voltage is applied to the single parallel capacitor to be detected can be reinforced by the laser emitted by the femtosecond laser emitter 32, and a high-voltage power supply is not required to provide a strong voltage and a high-voltage electric field;
the pincerlike inner wall of the movable current clamp 4 is provided with two reinforced vacuum tubes 41, and one ends of the vacuum transparent cover 321 and the reinforced vacuum tubes 41 are both provided with optical fiber couplers and connected through laser optical fibers; remove current clamp 4 itself and have the conductive coil, will remove current clamp 4 during the use, the joint is on one of them electrode sleeve of electric capacity, provide output detection current through above-mentioned test terminal 21 and No. two test terminal 22, can produce the magnetic field, and then the conductive coil in the removal current clamp 4 produces induced current, the effect of reinforcing vacuum tube 41 is the laser of receiving through laser fiber conduction, laser has the effect of amplifying magnetic field equally, can improve magnetic field intensity, and then improve the numerical value of the interior electric current of removal current clamp 4, need not traditional amplifier circuit.
As a preferred embodiment of the present invention, the output terminal block 121, the span control device 13, the a/D converter 14 and the microprocessor 15 are connected in series by electric wires; this connection ensures span control and digital and analog switching between the microprocessor 15 and the output patch panel 121.
As a preferred embodiment of the present invention, the programmable power supply 16 is connected to the microprocessor 15, the output terminal block 121, the femtosecond laser transmitter 32 through electric wires; the microprocessor 15 supplies power to the output terminal block 121 and the femtosecond laser transmitter 32 through the programmable power supply 16 so that it outputs power corresponding to the power.
In a preferred embodiment of the present invention, the microprocessor 15 is connected to the touch screen display 17, the current input terminal 122, the thermal printer 123 and the range knob 124 through wires; the touch screen display 17 is connected with the microprocessor 15 to have a man-machine interaction function, the current input terminal 122 can send the collected induced current to the microprocessor 15 for analysis and processing, and the range knob 124 can control the change of the range control device 13 to correspond to detected capacitors, inductors or resistors with different specifications.
As a preferred embodiment of the present invention, the range knob 124 includes a capacitance knob, an inductance knob, and a resistance knob; different knobs correspond to different range control, and the operation is simple and accurate.
As a preferred embodiment of the present invention, the control integrated circuit board 12 is provided with a USB interface 125 and a fuse 126 connected to the microprocessor 15 through wires; the USB port 125 facilitates quick connection for copying data and the fuse 126 prevents the device from being burned out by overload.
As a preferred embodiment of the present invention, the touch screen display 17 may display a capacitance control module, an inductance control module, a resistance control module and a storage module; the touch screen display 17 has a touch input function, can display a capacitance control module, an inductance control module, a resistance control module and a storage module, can enter corresponding detection programs by touching corresponding modules, and has the advantages of powerful function, convenience in use and simplicity in operation.
As a preferred embodiment of the present invention, the capacitance control module may display real-time capacitance detection current, capacitance detection voltage and capacitance, the inductance control module may display real-time inductance detection current, inductance detection voltage and inductance, the resistance control module may display real-time resistance detection current, resistance detection voltage and resistance value, and the storage module may store data measured by capacitance, inductance and resistance; when detecting the electric capacity, touch-screen display ware 17 can show the detection voltage, electric current and the electric capacity of electric capacity, and touch-screen display ware 17 can show the detection voltage, electric current and the inductance value of inductance when detecting the inductance, but the detection voltage, electric current and the resistance value of resistance are shown to the same reason, and is intelligent, convenient.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A capacitive device, characterized by: the device comprises a test body (1), a collection terminal (2), a laser enhancement device (3) and a movable current clamp (4);
the test body (1) is composed of a bearing shell (11), a control integrated electric plate (12), a range control device (13), an A/D converter (14), a microprocessor (15), a programmable power supply (16) and a touch screen display (17);
the control integrated circuit board (12) is provided with an output wiring board (121), a current input wiring terminal (122), a thermal printer (123) and a range knob (124), and the output wiring board (121) is provided with a current output terminal I (1211), a current output terminal II (1212), a voltage output terminal I (1213) and a voltage output terminal II (1214);
the acquisition terminal (2) comprises a first test terminal (21) and a second test terminal (22), two wire connectors are connected to one ends of the first test terminal (21) and the second test terminal (22), one wire connector on the first test terminal (21) is connected with the first current output terminal (1211), the other wire connector is connected with the first voltage output terminal (1213), one wire connector on the second test terminal (22) is connected with the second current output terminal (1212), and the other wire connector is connected with the second voltage output terminal (1214);
the laser reinforcing device (3) is composed of an integrated board (31) and a femtosecond laser emitter (32), a sinking groove is formed in the integrated board (31), the femtosecond laser emitter (32) is nested in the sinking groove, and a vacuum transparent cover (321) is arranged at one end of the femtosecond laser emitter (32);
the clamp-shaped inner wall of the movable current clamp (4) is provided with two reinforced vacuum tubes (41), and one ends of the vacuum transparent cover (321) and the reinforced vacuum tubes (41) are respectively provided with an optical fiber coupler and connected through laser optical fibers.
2. A capacitive device according to claim 1, wherein: the output terminal block (121), the range control device (13), the A/D converter (14) and the microprocessor (15) are connected in series by electric wires.
3. A capacitive device according to claim 1, wherein: the programmable power supply (16) is connected with the microprocessor (15), the output wiring board (121) and the femtosecond laser transmitter (32) through wires.
4. A capacitive device according to claim 1, wherein: the microprocessor (15) is connected with the touch screen display (17), the current input connecting terminal (122), the thermal printer (123) and the measuring range knob (124) through wires.
5. A capacitive device according to claim 1, wherein: the range knob (124) includes a capacitive knob, an inductive knob, and a resistive knob.
6. A capacitive device according to claim 1, wherein: the control integrated circuit board (12) is provided with a USB interface (125) and a fuse (126) which are connected with the microprocessor (15) through wires.
7. A capacitive device according to claim 1, wherein: the touch screen display (17) can display a capacitance control module, an inductance control module, a resistance control module and a storage module.
8. A capacitive device according to claim 7, wherein: the capacitance control module can display real-time capacitance detection current, capacitance detection voltage and capacitance, the inductance control module can display real-time inductance detection current, inductance detection voltage and inductance, the resistance control module can display real-time resistance detection current, resistance detection voltage and resistance, and the storage module can store data of capacitance, inductance and resistance measurement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811591769.XA CN109633278B (en) | 2018-12-25 | 2018-12-25 | Capacitor device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811591769.XA CN109633278B (en) | 2018-12-25 | 2018-12-25 | Capacitor device |
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| Publication Number | Publication Date |
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| CN109633278A CN109633278A (en) | 2019-04-16 |
| CN109633278B true CN109633278B (en) | 2021-05-14 |
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| CN201811591769.XA Active CN109633278B (en) | 2018-12-25 | 2018-12-25 | Capacitor device |
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| CN116979392B (en) * | 2023-06-06 | 2024-02-20 | 广鸿电气有限公司 | Mounting structure, capacitor module and capacitor cabinet |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1324009A2 (en) * | 2001-10-26 | 2003-07-02 | National Institute of Advanced Industrial Science and Technology | Capacitance position sensor and position controller equipped with the sensor |
| JP2008140130A (en) * | 2006-12-01 | 2008-06-19 | Alps Electric Co Ltd | Input device and method for manufacturing the same |
| CN101975893A (en) * | 2010-10-20 | 2011-02-16 | 沈阳工业大学 | Differential capacitance detection circuit based on instrument amplifier and detection method thereof |
| CN205880064U (en) * | 2016-08-01 | 2017-01-11 | 保定市源创电力设备制造有限公司 | Capacitance and inductance test instrument |
| CN106405251A (en) * | 2016-11-10 | 2017-02-15 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Wireless distributed capacitor inductor test apparatus and application |
| CN106526521A (en) * | 2016-11-24 | 2017-03-22 | 国网辽宁省电力有限公司电力科学研究院 | Calibration system for online monitoring device for capacitive equipment |
| CN207181531U (en) * | 2017-05-27 | 2018-04-03 | 伟宸科技（武汉）有限公司 | A kind of three phase capacitance electric inductance measuring-testing instrument |
-
2018
- 2018-12-25 CN CN201811591769.XA patent/CN109633278B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1324009A2 (en) * | 2001-10-26 | 2003-07-02 | National Institute of Advanced Industrial Science and Technology | Capacitance position sensor and position controller equipped with the sensor |
| JP2008140130A (en) * | 2006-12-01 | 2008-06-19 | Alps Electric Co Ltd | Input device and method for manufacturing the same |
| CN101975893A (en) * | 2010-10-20 | 2011-02-16 | 沈阳工业大学 | Differential capacitance detection circuit based on instrument amplifier and detection method thereof |
| CN205880064U (en) * | 2016-08-01 | 2017-01-11 | 保定市源创电力设备制造有限公司 | Capacitance and inductance test instrument |
| CN106405251A (en) * | 2016-11-10 | 2017-02-15 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Wireless distributed capacitor inductor test apparatus and application |
| CN106526521A (en) * | 2016-11-24 | 2017-03-22 | 国网辽宁省电力有限公司电力科学研究院 | Calibration system for online monitoring device for capacitive equipment |
| CN207181531U (en) * | 2017-05-27 | 2018-04-03 | 伟宸科技（武汉）有限公司 | A kind of three phase capacitance electric inductance measuring-testing instrument |
Non-Patent Citations (2)
| Title |
|---|
| Alignment and testing of the NIST calculable capacitor;Y. Wang 等;《29th Conference on Precision Electromagnetic Measurements (CPEM 2014)》;20140829;全文 * |
| 一种激光调高仪电容测量技术;阮亚文 等;《电子世界》;20170208;全文 * |
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Effective date of registration: 20221209 Address after: No.2, floor 4, unit 2, building D-10, China Optical Valley Cultural and Creative Industry Park, No.52, Liufang Avenue, Donghu New Technology Development Zone, Wuhan, Hubei Province, 430000 Patentee after: WEICHEN TECHNOLOGY (WUHAN) CO.,LTD. Patentee after: State Grid Ningxia Electric Power Co. Address before: No.2, floor 4, unit 2, building D-10, China Optical Valley Cultural and Creative Industry Park, No.52, Liufang Avenue, Donghu New Technology Development Zone, Wuhan, Hubei Province, 430000 Patentee before: WEICHEN TECHNOLOGY (WUHAN) CO.,LTD. |