CN2426609Y - High voltage equipment electric parameter measuring device - Google Patents
High voltage equipment electric parameter measuring device Download PDFInfo
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- CN2426609Y CN2426609Y CN 00223265 CN00223265U CN2426609Y CN 2426609 Y CN2426609 Y CN 2426609Y CN 00223265 CN00223265 CN 00223265 CN 00223265 U CN00223265 U CN 00223265U CN 2426609 Y CN2426609 Y CN 2426609Y
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Abstract
The utility model relates to an electric parameter measuring device of high voltage equipment. Analog signals sent by a current or voltage sampling circuit are converted into digital signals by A/D, and converted into optical signals by electric light; after transmitted by optical fiber, the optical signals are converted into the digital signals by photoelectricity; finally measurement results are output and displayed. The utility model coordinates with the digital display of a computer to realize to record point measuring values at any time automatically. The utility model has the advantages of optical fiber transmission signals, strong anti electromagnetic field interference ability, realization of high-voltage isolation, high measuring precision and safety.
Description
The utility model relates to electrical parameter measuring device, particularly the measurement mechanism of the electric current of high voltage installation, voltage.
High voltage installation forms interference and has increased difficulty its electric parameter measurement work because its environment has the existence of strong-electromagnetic field.For example, gyrotron to the negative high voltage in 100,000 volts in area, its cathode current and filament current voltage are extremely important to the heat test of gyrotron, and cathode current is directly connected to the good with bad of cathode electronics emission, and filament current voltage is the important means of adjusting the cathode electronics emission.The measurement mechanism of present existing gyrotron cathode current and filament current voltage is the analog meter metering system, because system has very high negative high voltage, its environment exists strong-electromagnetic field to disturb, and during gyrotron work, microwave output reaches tens kilowatts.Adopt organic glass to hang the mode of measuring gauge outfit and carry out high voltage and isolate, carry out reading with the method for camera watch lens processing industry monitoring TV, perhaps the tester is from the far reading that with the naked eye carries out of gauge outfit, (preventing that high voltage from injuring).The outmoded backwardness of this method of testing is not easy a pointer and index dial groove to good, and owing to the visual angle error causes measuring accuracy not high, and a kind of number reading method in back is quite dangerous, accidentally, just might be wounded by high voltage.The measured value of each measurement point is with paper notes record, people's reading, another person's record, suitable low of efficient.
The purpose of this utility model is to overcome the shortcoming and defect part of prior art and electrical parameter measuring device that a kind of high voltage installation is provided, makes electric parameter measurement and convenient reading safety and more accurate.
The purpose of this utility model is realized by the following technical programs: a kind of electrical parameter measuring device of high voltage installation, this device has: a current sampling circuit, form by shunt and amplifier, current signal is shunted through shunt, delivers to the simulating signal that amplifier amplifies back output reflection current signal again; A voltage sampling circuit is made of voltage divider, and voltage signal is exported the simulating signal of reflecting voltage signal after the voltage divider dividing potential drop; It is characterized in that this device also has: an A/D converter, it connects with the output terminal of described current sampling circuit, and the current analog signal of current sampling circuit (1) output becomes the digital signal of reflection electric current through A/D converter.An electro-optical conversion circuit, it connects with the output terminal of A/D converter, and the digital signal of its output is converted to light signal; A photoelectric switching circuit, it connects with above-mentioned electro-optical conversion circuit through optical fiber transmission line, and the light signal of electro-optical conversion circuit output is converted to digital signal; An output display circuit, it connects with photoelectric switching circuit, and the digital signal of the reflection electric current of its output is shown; It is away from equipment setting to be measured; The simulating signal of described voltage sampling circuit output adopts the identical conversion process mode of simulating signal with above-mentioned current sampling circuit output.
Based on the foregoing circuit structure, the curtage of high voltage installation is through sample circuit output corresponding simulating signal, become digital signal through analog to digital conversion again, be converted to light signal through electric light again and in optical fiber, transmit, after opto-electronic conversion be corresponding digital signals and in display circuit, demonstrate measurement result.Because the optical fiber antijamming capability is strong, get rid of ambient electromagnetic field fully and disturb, and signal is transferred to place away from equipment to be measured, realized convenience, safety and accurately measurement and reading, help monitoring to equipment.
Below in conjunction with accompanying drawing the utility model is described in detail.
Fig. 1 is a circuit block diagram of the present utility model;
Fig. 2 is the electrical schematic diagram of an embodiment of the present utility model.
Fig. 3 is the electrical schematic diagram of voltage sampling circuit of the present utility model.
Fig. 1 illustrates, the output terminal of current sampling circuit 1 and voltage sampling circuit 2 all connects with the input end of A/D converter 3 (also claiming voltage-frequency converter here), the output terminal of A/D converter is connected to electrical to optical converter 4 input ends, optical fiber transmission line 5 is connected between electrical to optical converter output terminal and photoelectric commutator 6 input ends, and last photoelectric commutator output terminal connects output display circuit 7.The simulating signal of curtage by the sampling gained, be converted to corresponding digital signals through A/D, again through electric light be converted to light signal and through Optical Fiber Transmission to away from the place of high voltage installation, through electric light conversion light signal is converted to digital signal again, after the output display circuit measurement result is shown.
Among Fig. 2, current sampling circuit 1 is made of shunt and amplifier, is made up of crosspointer socket CZ5 operational amplifier U4 (μ A741), shunt resistance R1 and outer member, and its output terminal is the contact of resistance 26 and electrochemical capacitor C19 positive pole; The A/D change-over circuit is by integrated package U
8(LM331), resistance R
14, R
15, R
16, R
17, capacitor C
10, C
11, C
23And potentiometer W
4Constitute; R
14One termination curtage.The output terminal of sample circuit, the other end and C
10Meet U
8Analog input end pin 7, C
10Other end ground connection, R
15And C
23Back in parallel one end ground connection, the other end is connected to U
8Pin 1 and pin 6, U
8 Pin 4 ground connection, pin 2 R that connects successively
16, W
4Back ground connection, R
17Be connected to U
8Pin 8 and pin 5 between, U
8Pin 8 connect 12V working power positive pole, pin 5 serial connection C
11Back ground connection, U
8Pin 3 be output terminal; Described electro-optical conversion circuit (4) is by electric light conversion element U
9, resistance R
20, R
22Constitute U
9Pin 1 pin 2 be connected in series R respectively
20, R
22After connect 5V working power positive pole, U
9Pin 3,4,5,8 equal ground connection; U
9Output terminal be connected to optical fiber transmission line 5; Described photoelectric switching circuit 6 is by photo-electric conversion element U
10Constitute U
10Input end is connected to optical fiber transmission line 5, U
10Pin 3,4,5,8 equal ground connection, pin 1,2 is as the signal input part of output terminations output display circuits 7.Above-mentioned U
9, U
10The finished product components and parts that adopt Motorola Inc. to produce.The output display circuit can adopt the counter of computing machine.Fig. 3 illustrates voltage sampling circuit 2 by dropping resistor R
9And potentiometer W
3, resistance 8, electrochemical capacitor C
5Form, its output terminal is potentiometer W
3With electrochemical capacitor C
5Anodal contact.The conversion process mode of the simulating signal of simulating signal of its output and the output of above-mentioned current sampling circuit is identical, promptly adopts identical circuit and components and parts.
Cathode current, filament current voltage to gyrotron are sampled respectively, and in this device, adopt optical fiber to carry out signal transmission and high voltage isolation, thoroughly solved this difficult problem, test signal is introduced low pressure end computing machine counter, method display result with the numeral demonstration, improve measuring accuracy widely, ensured tester's personal safety simultaneously.Simultaneously, if provide waveform duty cycle, can demonstrate peak cathode current automatically.Also can write down the measured value of any measurement point automatically, realize automatic meter-reading, improve testing efficiency widely.In addition, also can adopt analog meter to show measured value, as the digital signal of opto-electronic conversion output is converted to analog quantity through D/A.It has the measuring accuracy height, and is stable, safe and reliable characteristics.
Claims (4)
1, a kind of electrical parameter measuring device of high voltage installation, this device has:
A current sampling circuit (1) is made up of shunt and amplifier, and current signal is shunted through shunt, delivers to the simulating signal that amplifier amplifies back output reflection current signal again;
A voltage sampling circuit (2) is made of voltage divider, and voltage signal is exported the simulating signal of reflecting voltage signal after the voltage divider dividing potential drop; It is characterized in that this device also has:
An A/D converter (3), it connects with the output terminal of described current sampling circuit (1), and the current analog signal of current sampling circuit (1) output becomes the digital signal of reflection electric current through A/D converter.
An electro-optical conversion circuit (4), it connects with the output terminal of A/D converter (3), and the digital signal of its output is converted to light signal;
A photoelectric switching circuit (6), it connects with above-mentioned electro-optical conversion circuit (4) through optical fiber transmission line (5), and the light signal of electro-optical conversion circuit (4) output is converted to digital signal;
An output display circuit (7), it connects with photoelectric switching circuit (6), and the digital signal of the reflection electric current of its output is shown; It is away from equipment setting to be measured;
The simulating signal of described voltage sampling circuit (2) output adopts the identical conversion process mode of simulating signal with above-mentioned current sampling circuit (1) output.
2, measurement mechanism according to claim 1 is characterized in that, described A/D converter (3) is by integrated package U
8(LM331), resistance R
14, R
15, R
16, R
17, capacitor C
10, C
11, C
23And potentiometer W
4Constitute; R
14The output terminal of one termination curtage sample circuit, the other end and C
10Meet U
8Analog input end pin 7, C
10Other end ground connection, R
15And C
23Back in parallel one end ground connection, the other end is connected to U
8Pin 1 and pin 6; U
8Pin 4 ground connection, pin 2 R that connects successively
16, W
4Back ground connection, R
17Be connected to U
8Pin 8 and pin 5 between, U
8Pin 8 connect 12V working power positive pole, pin 5 serial connection C
11Back ground connection, U
8Pin 3 be output terminal; Described electro-optical conversion circuit (4) is by electric light conversion element U
9, resistance R
20, R
22Constitute U
9Pin 1 pin 2 be connected in series R respectively
20, R
22After connect 5V working power positive pole, U
9Pin 3,4,5,8 equal ground connection; U
9Output terminal be connected to optical fiber transmission line (5); Described photoelectric switching circuit (6) is by photo-electric conversion element U
10Constitute U
10Input end is connected to optical fiber transmission line (5), U
10Pin 3,4,5,8 equal ground connection, pin 1,2 is as the signal input part of output terminations output display circuits (7).
3, measurement mechanism according to claim 1 and 2 is characterized in that, described output display circuit (7) adopts the counter of computing machine.
4, measurement mechanism according to claim 3 is characterized in that, described output display circuit (7) adopts the simulation indicator gauge, is equipped with D/A converter before the simulation indicator gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00223265 CN2426609Y (en) | 2000-06-13 | 2000-06-13 | High voltage equipment electric parameter measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00223265 CN2426609Y (en) | 2000-06-13 | 2000-06-13 | High voltage equipment electric parameter measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2426609Y true CN2426609Y (en) | 2001-04-11 |
Family
ID=33587845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00223265 Expired - Fee Related CN2426609Y (en) | 2000-06-13 | 2000-06-13 | High voltage equipment electric parameter measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2426609Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100378462C (en) * | 2003-09-09 | 2008-04-02 | 武汉大学 | Multiphase digital synchronously sampling photoelectric current mutual inductor |
| CN101738529A (en) * | 2008-11-18 | 2010-06-16 | 北京北方微电子基地设备工艺研究中心有限责任公司 | High-voltage power supply output sampling device and plasma device |
| CN102654530A (en) * | 2012-04-23 | 2012-09-05 | 华中科技大学 | High-voltage electrode discharge current measuring device |
| WO2016065828A1 (en) * | 2014-10-29 | 2016-05-06 | 中兴通讯股份有限公司 | Data sampling method and apparatus |
| CN105576616A (en) * | 2015-12-22 | 2016-05-11 | 中国科学院等离子体物理研究所 | Full isolation measuring and protective device used for high voltage supply system |
| CN105675961A (en) * | 2016-02-19 | 2016-06-15 | 广州市诚臻电子科技有限公司 | Voltage testing device and system capable of bearing high electromagnetic radiation field, and application |
| CN106940396A (en) * | 2017-05-04 | 2017-07-11 | 贵州电网有限责任公司 | A kind of Fiber-Optic Voltage |
| CN106970254A (en) * | 2017-05-04 | 2017-07-21 | 贵州电网有限责任公司 | A kind of optical fiber current mutual inductor |
| CN113985102A (en) * | 2021-09-17 | 2022-01-28 | 阳春新钢铁有限责任公司 | System and method for detecting dynamic voltage of dual power cabinet |
-
2000
- 2000-06-13 CN CN 00223265 patent/CN2426609Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100378462C (en) * | 2003-09-09 | 2008-04-02 | 武汉大学 | Multiphase digital synchronously sampling photoelectric current mutual inductor |
| CN101738529A (en) * | 2008-11-18 | 2010-06-16 | 北京北方微电子基地设备工艺研究中心有限责任公司 | High-voltage power supply output sampling device and plasma device |
| CN102654530A (en) * | 2012-04-23 | 2012-09-05 | 华中科技大学 | High-voltage electrode discharge current measuring device |
| WO2016065828A1 (en) * | 2014-10-29 | 2016-05-06 | 中兴通讯股份有限公司 | Data sampling method and apparatus |
| CN105634493A (en) * | 2014-10-29 | 2016-06-01 | 中兴通讯股份有限公司 | Data sampling method and data sampling device |
| CN105576616A (en) * | 2015-12-22 | 2016-05-11 | 中国科学院等离子体物理研究所 | Full isolation measuring and protective device used for high voltage supply system |
| CN105675961A (en) * | 2016-02-19 | 2016-06-15 | 广州市诚臻电子科技有限公司 | Voltage testing device and system capable of bearing high electromagnetic radiation field, and application |
| CN106940396A (en) * | 2017-05-04 | 2017-07-11 | 贵州电网有限责任公司 | A kind of Fiber-Optic Voltage |
| CN106970254A (en) * | 2017-05-04 | 2017-07-21 | 贵州电网有限责任公司 | A kind of optical fiber current mutual inductor |
| CN113985102A (en) * | 2021-09-17 | 2022-01-28 | 阳春新钢铁有限责任公司 | System and method for detecting dynamic voltage of dual power cabinet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |