CN103017826B - High pressure series connection valve typed multiple physical quantity measuring system for experiment - Google Patents
High pressure series connection valve typed multiple physical quantity measuring system for experiment Download PDFInfo
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- CN103017826B CN103017826B CN201210520908.6A CN201210520908A CN103017826B CN 103017826 B CN103017826 B CN 103017826B CN 201210520908 A CN201210520908 A CN 201210520908A CN 103017826 B CN103017826 B CN 103017826B
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Abstract
The invention provides a high pressure series connection valve typed multiple physical quantity measuring system for an experiment. The measuring system comprises a measuring unit, a data collection front end, a photoelectric measuring device, an oscilloscope and a computer, wherein the measuring unit, the data collection front end and a photoelectric measuring system are connected in sequence; the photoelectric measuring system are in communication with the oscilloscope and the computer. The high pressure series connection valve typed multiple physical quantity measuring system for the experiment has the advantages of achieving real time monitoring of the high pressure multiple physical quantity measuring system, being high in precision, being high in reliability, being stable in performance and being good in anti-interference capability.
Description
Technical field
The invention belongs to field of power, be specifically related to a kind of high-pressure series valve type approval test many physical quantities system.
Background technology
Along with the progressively popularization that Power Electronic Technique is applied in electric system, the high-pressure valve based on power electronics series equalization technologies becomes the core component of various high power electronic equipment.Such as SVC, TCSC, HVDC etc.And type approval test is related to improve various high-pressure series valve Design and manufacture level, improve the important tests means of its reliability.
Many physical quantities system be in high-pressure series valve action test set to the important means that many physical quantitys such as the voltage of test product valve different measuring points, electric current, temperature are measured and monitored.The many physical quantities system being applicable to the type approval test of high-pressure series valve is at present still blank at home.
Must the accurately voltage of different measuring points, electric current and temperature in Real-Time Monitoring test product valve in the type approval test of existing high-pressure series valve, to ensure the safety of test product valve and carrying out smoothly of test.And test product valve be operated in the associating full working scope alternately producing high voltage, big current under, be in noble potential, electromagnetic environment is severe, therefore adopts traditional measuring method to be difficult to meet the demands.Compared with traditional measurement method, main technological difficulties are as follows: 1) residing for valve body, electromagnetic environment is more severe, big current on the one hand in test, high field intensity can cause larger electromagnetic interference (EMI) to measuring system, on the other hand, the high-speed switch process of power electronic devices also can produce a large amount of strong electromagnetic, therefore must solve Anti-interference Design problem and the measuring accuracy problem of measuring system; 2) because valve is positioned at noble potential, directly can not be powered by electronegative potential, the independently-powered problem of contact type measurement point must be solved; 3) the communication isolating problem of measuring system and earth potential equipment room must be solved.4) current potential of each valve layer is different, needs to measure in real time distribution potential.
Summary of the invention
For overcoming above-mentioned defect, the invention provides a kind of high-pressure series valve type approval test many physical quantities system, the Real-Time Monitoring to the many physical quantitys of high-pressure series valve can be realized, and there is high precision, high reliability, stable performance, the advantage that antijamming capability is strong.
For achieving the above object, the invention provides a kind of high-pressure series valve type approval test many physical quantities system, its improvements are, described system comprises: test cell, data acquisition front, photoelectric measuring device, oscillograph and computing machine; Described test cell, described data acquisition front are connected successively with described photoeletric measuring system; Described photoeletric measuring system communicates with described computing machine with described oscillograph respectively.
In optimal technical scheme provided by the invention, described test cell, comprising: the high-voltage probe be set up in parallel, current sensor and temperature sensor; The data of high-pressure series valve measuring point are transferred to described data acquisition front by described high-voltage probe, described current sensor and described temperature sensor respectively.
In second optimal technical scheme provided by the invention, described data acquisition front is data acquisition device.
In 3rd optimal technical scheme provided by the invention, the measurement frequency band of described data acquisition front is 25MHz, and sampling rate is 100MHz.
In 4th optimal technical scheme provided by the invention, described photoelectric measuring device, comprising: photoelectric commutator and with its data receiver by Fiber connection; Described data receiver communicates with described computing machine with described oscillograph respectively.
In 5th optimal technical scheme provided by the invention, described photoelectric commutator, adopts model to be the chip of SCALANCEX101-1.
In 6th optimal technical scheme provided by the invention, described data receiver, comprising: power supply box and be arranged on the data receipt unit of described power supply box inside, data processing unit, logic control element and data outputting unit; Described data receipt unit, data processing unit, logic control element communicate successively with data outputting unit.
In 7th optimal technical scheme provided by the invention, described data receipt unit, for receiving the light signal of described photoelectric commutator, and is converted to electric signal; Data processing unit, for conditioning and the storage of signal; Logic control element, for processing signal, and carries out data interaction with described oscillograph and described computing machine; Data outputting unit, for sending described computing machine and described oscillograph respectively to signal.
In 8th optimal technical scheme provided by the invention, described data receiver is connected by concentric cable with described oscillograph.
Compared with the prior art, a kind of high-pressure series valve provided by the invention type approval test many physical quantities system, adopt independently data acquisition front, realize the Real-Time Monitoring to voltage, electric current, temperature, and obtain by data processing the real-time display that du/dt, di/dt etc. calculate data; Adopt the data acquisition front of Phototube Coupling; Gather front end and adopt independent lithium battery power supply; Data acquisition amount adopts Optical Fiber Transmission, and isolated high electronegative potential well, transmission range reaches 800 meters, and time delay is less than 10ns; The nearly real-time online measuring of the different distributions measuring point on 16 tunnels.By the combination of these functional characteristics, the Real-Time Monitoring to the many physical quantitys of high-pressure series valve can be realized, and there is high precision, high reliability, stable performance, the advantage that antijamming capability is strong; And, adopt Large Copacity, high-performance, long-life independent lithium battery power supply, solve data acquisition front and to power isolating problem, effectively prevent high pressure and introduce civil power and produce harm; Data acquisition front insulation against ground, the simulating signal of collection is converted into digital signal by system on the spot, and digital signal is converted into light signal, then Optical Fiber Transmission is passed through, various trial voltages required in extra-high voltage project can be born, avoid the impact of electromagnetic interference (EMI), solve noble potential isolating problem with the safe operation of protected data receiving end, avoid interference problem in light signal transport process; Data acquisition front volume is little, and power is low, and measure frequency band and reach 25MHz, sampling rate 100MHz, error deviation is less than 0.1%.Can measure multiple physical quantity being in the valve layer of different potentials simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of high-pressure series valve type approval test many physical quantities system.
Fig. 2 is the structural representation of described data receiver.
Embodiment
As shown in Figure 1, a kind of high-pressure series valve type approval test many physical quantities system, comprising: test cell, data acquisition front, photoelectric measuring device, oscillograph and computing machine; Described test cell, described data acquisition front are connected successively with described photoeletric measuring system; Described photoeletric measuring system communicates with described computing machine with described oscillograph respectively.
Described test cell, comprising: the high-voltage probe be set up in parallel, current sensor and temperature sensor; The data of high-pressure series valve measuring point are transferred to described data acquisition front by described high-voltage probe, described current sensor and described temperature sensor respectively.
Described data acquisition front is data acquisition device.The measurement frequency band of described data acquisition front is 25MHz, and sampling rate is 100MHz.
Described photoelectric measuring device, comprising: photoelectric commutator and with its data receiver by Fiber connection; Described data receiver communicates with described computing machine with described oscillograph respectively.Described photoelectric commutator, employing model is the chip of SCALANCE X101-1.
As shown in Figure 2, described data receiver, comprising: power supply box and be arranged on the data receipt unit of described power supply box inside, data processing unit, logic control element and data outputting unit; Described data receipt unit, data processing unit, logic control element communicate successively with data outputting unit.
Described data receipt unit, for receiving the light signal of described photoelectric commutator, and is converted to electric signal; Data processing unit, for conditioning and the storage of signal; Logic control element, for processing signal, and carries out data interaction with described oscillograph and described computing machine; Data outputting unit, for sending described computing machine and described oscillograph respectively to signal.
Described data receiver, for being digital signal by converting optical signals, reads the physical values of each measuring point in real time; And be simulating signal by converting optical signals, the while of sending to oscillographic by bnc interface, pass the signal to computing machine and carry out data processing and display.
Described data receiver is connected by concentric cable with described oscillograph.
By following examples, high-pressure series valve type approval test many physical quantities system is further described.
Accompanying drawing 1 is many physical quantities system principle diagram.High-pressure series valve measuring point is inputed to data acquisition front by high-voltage probe, current sensor, temperature sensor, the signal mode analog values detected is converted to digital signal by photoelectric commutator by data acquisition front, by optic fiber converter digital signal is converted to light signal and is uploaded to data receiver by optical fiber.Converting optical signals can be returned into digital signal at data receiver end, be read the physical values of each measuring point by monitoring software in real time, can be also simulating signal by converting optical signals, be sent it back the testing apparatuss such as oscillograph by bnc interface.
Many physical quantities system adopts portable design, is provided with 16 collection points, tunnel, can voltage, electric current, the Temperature Quantity of each measuring point of Real-Time Monitoring high-pressure series pipe valve in process of the test, and real-time waveform display can be carried out and data calculate, contrast, analysis.
It is to be understood that content of the present invention and embodiment are intended to the practical application proving technical scheme provided by the present invention, should not be construed as limiting the scope of the present invention.Those skilled in the art inspired by the spirit and principles of the present invention, can do various amendment, equivalent replacement or improve.But these changes or amendment are all in the protection domain that application is awaited the reply.
Claims (4)
1. high-pressure series valve type approval test many physical quantities system, is characterized in that, described system comprises: test cell, data acquisition front, photoelectric measuring device, oscillograph and computing machine; Described test cell, described data acquisition front are connected successively with described photoeletric measuring system; Described photoeletric measuring system communicates with described computing machine with described oscillograph respectively;
Described test cell, comprising: the high-voltage probe be set up in parallel, current sensor and temperature sensor; The data of high-pressure series valve measuring point are transferred to described data acquisition front by described high-voltage probe, described current sensor and described temperature sensor respectively;
Described photoelectric measuring device, comprising: photoelectric commutator and with its data receiver by Fiber connection; Described data receiver communicates with described computing machine with described oscillograph respectively;
Described data acquisition front is data acquisition device;
Described data receiver, comprising: power supply box and be arranged on the data receipt unit of described power supply box inside, data processing unit, logic control element and data outputting unit; Described data receipt unit, data processing unit, logic control element communicate successively with data outputting unit;
Described data receipt unit, for receiving the light signal of described photoelectric commutator, and is converted to electric signal; Data processing unit, for conditioning and the storage of signal; Logic control element, for processing signal, and carries out data interaction with described oscillograph and described computing machine; Data outputting unit, for sending described computing machine and described oscillograph respectively to signal.
2. system according to claim 1, is characterized in that, the measurement frequency band of described data acquisition front is 25MHz, and sampling rate is 100MHz.
3. system according to claim 1, is characterized in that, described photoelectric commutator, adopt model be SCALANCE X101 ?1 chip.
4. system according to claim 1, is characterized in that, described data receiver is connected by concentric cable with described oscillograph.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210520908.6A CN103017826B (en) | 2012-12-06 | 2012-12-06 | High pressure series connection valve typed multiple physical quantity measuring system for experiment |
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| CN201210520908.6A CN103017826B (en) | 2012-12-06 | 2012-12-06 | High pressure series connection valve typed multiple physical quantity measuring system for experiment |
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| CN103017826B true CN103017826B (en) | 2015-07-22 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201096849Y (en) * | 2007-09-18 | 2008-08-06 | 中国电力科学研究院 | A high level voltage measuring system for high-voltage DC transmission conversion valve |
| CN101893670A (en) * | 2010-06-25 | 2010-11-24 | 中国电力科学研究院 | Photoelectric measurement system for high-voltage direct current power transmission converter valve |
| CN102185285A (en) * | 2011-04-18 | 2011-09-14 | 中国电力科学研究院 | Protection configuration method for converter valve in flexible direct current power transmission system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10305986B4 (en) * | 2003-02-12 | 2022-07-21 | IAD Gesellschaft für Informatik, Automatisierung und Datenverarbeitung mbH | Measuring system with intelligent sensor head for medium or high voltage systems or in mining |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201096849Y (en) * | 2007-09-18 | 2008-08-06 | 中国电力科学研究院 | A high level voltage measuring system for high-voltage DC transmission conversion valve |
| CN101893670A (en) * | 2010-06-25 | 2010-11-24 | 中国电力科学研究院 | Photoelectric measurement system for high-voltage direct current power transmission converter valve |
| CN102185285A (en) * | 2011-04-18 | 2011-09-14 | 中国电力科学研究院 | Protection configuration method for converter valve in flexible direct current power transmission system |
Non-Patent Citations (2)
| Title |
|---|
| "HVDC换流阀组件宽频带电压光电测量系统的研制";薛阳等;《电网技术》;20110131;第35卷(第1期);第106-109页 * |
| 直流输电换流阀晶闸管电压分布的光电测量系统;方志等;《电力系统自动化》;20030725;第27卷(第14期);第69-71页 * |
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