CN2881820Y - Data collection system of thyristor valve overcurrent test device - Google Patents
Data collection system of thyristor valve overcurrent test device Download PDFInfo
- Publication number
- CN2881820Y CN2881820Y CN 200620007992 CN200620007992U CN2881820Y CN 2881820 Y CN2881820 Y CN 2881820Y CN 200620007992 CN200620007992 CN 200620007992 CN 200620007992 U CN200620007992 U CN 200620007992U CN 2881820 Y CN2881820 Y CN 2881820Y
- Authority
- CN
- China
- Prior art keywords
- data acquisition
- card
- data collection
- voltage
- high speed
- 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
Images
Abstract
A data collection system of thyristor valve overcurrent test device works in a mechanism of voltage, current and other auxiliary metrics of a valve to be tested are signalized with correspondent resistant voltage divider, resistance capacity voltage divider, current divider, voltage transformer and current transformer and the signals are transferred to a transmitter unit. Signals are acquired through a high speed card and a low speed card. The low speed card conducts data collection for heating process and resonance process, while the high speed card conducts data collection for first cycles of the resonance process. Data collection unit is controlled remotely by a console and carries out real-time communication with a server through network protocols to receive test parameters from the server and display communication status. The data collection system of the utility model is a measurement system based on virtual devices with adoption of a duo-card solution, so it is characterized in high reliability, high sampling accuracy and long time of effective working.
Description
Technical field
The utility model relates to the device that in electric system and the power electronic system thyristor is carried out overcurrent test, particularly a kind of overcurrent tester of TCR data acquisition system (DAS).
Background technology
Overcurrent test (Overcurrent Test) is the important technical of the high-power thyristor valve of the examination electric system increasingly extensive use ability of jam-tolerant electric current, voltage and relevant thermal effect and galvanomagnetic effect under failure condition.The measuring system of test unit must write down test figure effectively, for data analysis and fault analysis provide foundation.
The trial voltage of overcurrent experimental device reaches as high as 40kV, and maximum current reaches 40kA, all will guarantee the secondary measuring system operate as normal when various fault takes place primary system.Particularly test product valve costs an arm and a leg, add test current much larger than its rated current, test might have certain destructiveness, for specific test product, test may be unrepeatable, catching of crucial details in the process of the test seemed particularly important, thereby require measuring system to have high reliability.
The measuring system of test unit must meet country and the standard code of power industry high-tension measurement.Therefore, measuring system must possess higher measuring accuracy.
In addition, for preventing the concentrated consumption of system resource, cause system crash even deadlock, reasonable resources is distributed also becomes the key factor that improves measure of system performance.
At present, domestic except that China Electric Power Research Institute, also the FACTS high-pressure valve is not carried out the device of overcurrent test.And the major company of the overcurrent experimental device that abroad has such as Switzerland ABB, Sweden ABB, SIEMENS, TOSHIBA company, the measuring system of its device does not all adopt the data acquisition technology based on virtual instrument.
Summary of the invention
In order to solve the problems referred to above in the middle of the prior art, the purpose of this utility model provide a kind of based on virtual instrument technique, adopt at a high speed, that the two cards of low speed are realized data acquisitions and had that system is reliable, measuring accuracy is high, software resource distributes is reasonable, easy and simple to handle, the interface succinct, the overcurrent tester of TCR data acquisition system (DAS) of perfect in shape and function characteristics.
The technical scheme in the invention for solving the technical problem is: a kind of overcurrent tester of TCR data acquisition system (DAS), include resitstance voltage divider, RC divider, shunt, voltage transformer (VT), current transformer, other auxiliary quantities obtain signal by corresponding resitstance voltage divider, RC divider, shunt, voltage transformer (VT), current transformer etc. in the voltage of test product valve, electric current and the circuit, reach transducing unit through cable;
The collection of signal is made of high speed, low speed two blocks of data capture cards; The low speed card is realized the data acquisition to heating process and resonant process, and can realize blocking the control of start-stop at a high speed by the I/O signal that reads the self-regulation control module; Card is realized the data acquisition to several cycles before the resonant process at a high speed;
The data acquisition industrial computer realizes and being connected of card and low speed card at a high speed by the computer PCI interface, and by LAN by the operator's console Long-distance Control, utilize procotol and server to carry out real-time Communication for Power, reception is from the test parameters of server, and the demonstration communication state;
Regulate control module and comprise regulon and the monitoring unit that links to each other by the I/O digital input-output interface, monitoring unit is controlled the gain multiple of transducing unit by I/O mouth line; Regulon links to each other with the Communication Control machine by the CAN fieldbus with monitoring unit, the Communication Control machine then by LAN by the operator's console Long-distance Control;
Adopt match circuit at cable end piece as transmission medium, cable external shielding layer ground connection, build-out resistor and transmission line wave impedance equal and opposite in direction are 75 ohm, prevent the distorted signals that reflection wave causes.
Owing to adopted above-mentioned technical scheme, the beneficial effect that the utlity model has is:
Because data acquisition system (DAS) of the present utility model is based on virtual instrument technique, the measuring system that adopt at a high speed, the two cards of low speed is realized data acquisition, not only more flexible than traditional experimental measurement instrument (as oscillograph), can save substantial contribution; And native system has adopted two card acquisition scheme, selected for use and can satisfy the relatively low data collecting card of price that performance index require, by reasonable arrangement test figure storage order, avoided using the technology and equipment that stays dish at a high speed, further reduced cost.
Data acquisition system (DAS) of the present utility model based on the structure of virtual instrument, according to GB/T 17626.4-1998, GB/T17626.10-1998 standard, through EMC (electromagnetic compatibility) test, system can bear fast transient and disturb (level Four) and the anti-winding degree test of attenuation oscillasion impulse (level Four).Therefore, data acquisition system (DAS) of the present utility model has higher reliability.
The utility model is checked through measuring, and systematic survey high voltage, big current error meet the regulation of State Standard of the People's Republic of China GB311.4 " high-voltage test techniques the 4th part measurement mechanism " all less than 1%.Therefore, data acquisition system (DAS) of the present utility model has higher sampling precision.
In addition, the software resource of data acquisition system (DAS) of the present utility model distributes rationally, and the LabVIEW software resource distributes rationally, has avoided the contention and the waste of system resource, and the system that makes can effectively work for a long time.
Description of drawings
Fig. 1 is the block diagram of overcurrent tester of TCR data acquisition system (DAS) of the present utility model.
Fig. 2 is the match circuit synoptic diagram of coaxial cable end of the present utility model.
Fig. 3 is that signal gain of the present utility model is provided with synoptic diagram.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described further.
Referring to Fig. 1, other auxiliary quantities obtain signal by corresponding resitstance voltage divider, RC divider, shunt, voltage transformer (VT) (PT), current transformer (CT) etc. in the voltage of test product valve, electric current and the circuit, reach transducing unit through cable.The collection of signal is made of high speed, low speed two boards card, and one is the PCI-6014 low speed card of NI company, and another piece is that the PCI-9812 of Ling Hua company blocks at a high speed.6014 cards are realized the data acquisition to heating process and resonant process, and can realize control to 9812 card start-stops by the I/O signal that reads the self-regulation control module; 9812 cards are realized the high speed acquisition to the data in several cycles before the resonant process.
Regulate control module and comprise that by interconnective regulon of I/O interface and monitoring unit regulon links to each other with the Communication Control machine by the CAN fieldbus with monitoring unit, the Communication Control machine then by LAN by the operator's console Long-distance Control;
Data acquisition unit is expressed as data acquisition industrial computer (client) in the drawings, it links to each other with the low speed card with the high speed card by the computer PCI interface, and by LAN by the operator's console Long-distance Control, utilize procotol and server to carry out real-time Communication for Power, reception is from the test parameters of server, and the demonstration communication state.
Software development environment adopts the LabVIEW based on the G language.Specifically, software development mainly realizes following function:
A. data acquisition unit utilizes procotol and server to carry out real-time Communication for Power by the operator's console Long-distance Control, receives the test parameters from server, and shows communication state.
B. the data that overrun in the heating process are reported to the police and record.Range criterion can be set at any time, for ease of data analysis, during data recording can before review.
C. to resonant process, 9812 cards write down the data in preceding several cycles, and 6014 cards give record to the resonance overall process.
D。In the process of the test, allow the operator to capture interested waveform and preservation.
E. give necessary information indicating to current trystate.
F. process of the test is supported Long-distance Control, also allows on-the-spot manual intervention.
G. in the Data Post stage, can generate test report automatically based on webpage.
Improving the measuring system technology of dependability realizes:
A. adopt German DEHN company to have the overvoltage protection device and the lightning arrester of fast response characteristic at transducing unit, thereby prevent the influence of destructive potential difference (PD) that thunder and lightning or operation (comprising fault) etc. cause secondary measuring system.
B. measuring system adopts the UPS power supply, has overcome the influence that measuring system is caused by the power quality problem.
C. adopt procotol with the communication of host computer, compare, can guarantee reliable data transmission with udp protocol based on TCP/IP.The parameter stage is being set, and system is judged the rationality of each frame parameter of receiving, repays operator's console simultaneously, is checked by operator's console, guarantees the correct of parameter transmission.Carry out in the process in test, server timed sending safety message in case client software is found communicating interrupt, is reported to the police rapidly and active Connection Service device, guarantees that communication is unimpeded.
D. according to the characteristics in each stage of test, the operability of the button of LabVIEW operating platform is controlled, prevented user misoperation.
The I/O signal controlling of E.LabVIEW program circuit origin self-regulation unit.The I/O signal is carried out necessary anti-EMI comprised the High frequency filter processing.Simultaneously, program repeatedly reads judgement after to the I/O signal lag, prevents to cause the flow process mistake to switch because of the I/O signal is subjected to disturb.
F. reasonable distribution software resource (hereinafter describing in detail) has been avoided the concentrated consumption of resource, has solved the potential integrity problem of virtual instrument.
The technology that improves the measuring system precision realizes:
A. because high-tension measurement end distance virtual instrument is far away, in transmission course, disturbed less for making signal, select for use logical wider range, noise suppression feature frequently preferably concentric cable (45MHz decay down is not more than 0.28dB/m) as transmission medium.Adopt match circuit in line end, build-out resistor and transmission line wave impedance Z equal and opposite in direction (as shown in Figure 2) prevent the distorted signals that reflection wave causes.
B. in order to reduce the strong electromagnetic that signal is subjected in transmission course, than general signal higher relatively (about tens volts), can obtain higher signal to noise ratio (S/N ratio) like this from the signal amplitude of transmission line input.
C. because test product valve characteristic difference requires all to have higher measuring accuracy in the measurement range of broad.For this reason, voltage, current range scope respectively are divided into * 1, * 2, * 4, * 8 four gears, by the size of monitoring unit according to the trial voltage grade, send gear and select signal, select different modulate circuits to be input to data collecting card, not only enlarged the signal input range, and made it, so just reduced the influence of quantization error near full scale.Modulate circuit has adopted low gain error, low nonlinearity characteristic, low noise programmable gain amplifier (Software Programmable Gain Amplifier) in design.
D. under high pressure each road signal is surveyed, realize error correction function by LabVIEW software.
E. transducing unit has adopted the isolated amplifier modules A D202 (Isolation Amplifier) of AD company that input signal is isolated, each road signal of make gathering at transducing unit not altogether, thereby effectively reduce phase mutual interference between each signal.
F. when measurement data was carried out aftertreatment, the LabVIEW program was by carrying out the MATLAB script, and operation wavelet de-noising program has reduced the influence of noise to signal.During parameters such as calculating di/dt, dv/dt, adopted the algorithm of five point interpolation type differentiates, this algorithm has also guaranteed the requirement to precision.
The technology of reasonable distribution software resource realizes:
A. owing to used multithreadings such as the data acquisition at times of many cards, real-time communication, time course demonstration in the LabVIEW program, reasonable distribution the resource proportion that takies of each thread, avoided influence each other.
B. for heating process,, in this process, only write down the effective value of each collection period data, unless data have surpassed the scope of setting because the time is longer.So just reduced the data recording amount.
C. in resonant process, the low speed card is with the data in real time record, and card is quite big owing to data volume at a high speed, and only gathers once, thereby data are temporary in buffer zone earlier, treats to read and record after the off-test again, has avoided the contention between resource.
D. in the continuous acquisition stage of data, the Usage data collection incident realizes asynchronous collecting, has avoided not gathering the idle waiting status of the program that causes because equipment is finished, thereby has improved executing efficiency.
E. in programming, do not use global variable, avoided read-write competition and consumption of natural resource because of using global variable to cause.
F. in data acquisition and operation, use bottom function and binary recording form, reduced the expense of resource file.
Claims (5)
1, a kind of overcurrent tester of TCR data acquisition system (DAS), it is characterized in that: include resitstance voltage divider, RC divider, shunt, voltage transformer (VT), current transformer, other auxiliary quantities obtain signal by corresponding resitstance voltage divider, RC divider, shunt, voltage transformer (VT), current transformer etc. in the voltage of test product valve, electric current and the circuit, reach transducing unit through cable;
Regulate control module and comprise regulon and the monitoring unit that links to each other by the I/O interface, monitoring unit is controlled the gain multiple of transducing unit by I/O mouth line, regulon links to each other with the Communication Control machine by the CAN fieldbus with monitoring unit, the Communication Control machine then by LAN by the operator's console Long-distance Control;
The collection of signal is made of high speed, the low speed two blocks of data analog input cards of data acquisition unit; The low speed card is realized the data acquisition to heating process and resonant process, and can realize blocking the control of start-stop at a high speed by the I/O signal that reads the self-regulation control module; Card is realized the data acquisition to several cycles before the resonant process at a high speed;
Data acquisition unit links to each other with the low speed data analog input card with the high-speed data acquisition integrated circuit board by the computer PCI interface, and by LAN by the operator's console Long-distance Control, utilize procotol and server to carry out real-time Communication for Power, receive test parameters, and show communication state from server.
2, a kind of overcurrent tester of TCR data acquisition system (DAS) according to claim 1 is characterized in that: the concentric cable that adopting decays under the 45MHz is not more than 0.28dB/m is as transmission medium, and model is SYV-75-2; Cable end piece as transmission medium adopts match circuit, cable external shielding layer ground connection, and build-out resistor and transmission line wave impedance equal and opposite in direction prevent the distorted signals that reflection wave causes.
3, a kind of overcurrent tester of TCR data acquisition system (DAS) according to claim 1 is characterized in that: described high speed card is that the PCI-9812 of Ling Hua company blocks at a high speed; The PCI-6014 low speed card that described low speed card is a NI company.
4, a kind of overcurrent tester of TCR data acquisition system (DAS) according to claim 1 and 2, it is characterized in that: adopt German DEHN company to have the overvoltage protection device and the lightning arrester of fast response characteristic at transducing unit, thereby prevent the influence of destructive potential difference (PD) that thunder and lightning or operating troubles etc. cause the data acquisition system; Data acquisition system adopted UPS power supply.
5, a kind of overcurrent tester of TCR data acquisition system (DAS) according to claim 1 and 2, it is characterized in that: voltage, current range scope respectively are divided into 4 gears, select different modulate circuits to be input to data collecting card, make it, reduce the influence of quantization error near full scale; Modulate circuit has adopted low gain error, low nonlinearity characteristic, low noise programmable gain amplifier; The isolated amplifier module of AD company is adopted in the signal input, and model is AD202, reduces the phase mutual interference between each signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620007992 CN2881820Y (en) | 2006-03-17 | 2006-03-17 | Data collection system of thyristor valve overcurrent test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620007992 CN2881820Y (en) | 2006-03-17 | 2006-03-17 | Data collection system of thyristor valve overcurrent test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2881820Y true CN2881820Y (en) | 2007-03-21 |
Family
ID=37881660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620007992 Expired - Lifetime CN2881820Y (en) | 2006-03-17 | 2006-03-17 | Data collection system of thyristor valve overcurrent test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2881820Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102184749A (en) * | 2011-04-11 | 2011-09-14 | 北京广利核系统工程有限公司 | Method for automatically testing DCS (Digital Control System) control cabinet |
| CN102184750A (en) * | 2011-04-11 | 2011-09-14 | 北京广利核系统工程有限公司 | Testing device of nuclear power station digitized instrument and control system |
-
2006
- 2006-03-17 CN CN 200620007992 patent/CN2881820Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102184749A (en) * | 2011-04-11 | 2011-09-14 | 北京广利核系统工程有限公司 | Method for automatically testing DCS (Digital Control System) control cabinet |
| CN102184750A (en) * | 2011-04-11 | 2011-09-14 | 北京广利核系统工程有限公司 | Testing device of nuclear power station digitized instrument and control system |
| CN102184750B (en) * | 2011-04-11 | 2016-06-01 | 北京广利核系统工程有限公司 | A kind of nuclear plant digital I&C system test device |
| CN102184749B (en) * | 2011-04-11 | 2016-06-01 | 北京广利核系统工程有限公司 | A kind of automatic test approach of DCS switch board |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101581748B (en) | Zinc oxide arrester on-line monitoring system | |
| CN102759675B (en) | On-line electric energy quality monitoring device | |
| CN201269901Y (en) | Over-voltage monitoring device for electric grid | |
| CN101666826B (en) | Overvoltage online monitoring device based on dual time base sampling technology | |
| CN101408565B (en) | 35KV power distribution station internal and external over voltage monitoring method based on voltage mutual inductor sampling | |
| CN102680866B (en) | Real-time online early warning device and method for insulation faults of transformer | |
| CN1932533A (en) | High voltage electricity network internal and external overvoltage comprehensive on-line monitoring apparatus and method | |
| CN100529772C (en) | Power network overvoltage signal frequency conversion sampling method | |
| CN106501588B (en) | A kind of short-circuit current of near zone of transformer monitoring method | |
| CN103558448B (en) | A kind of transmission line of electricity multichannel lightning current monitoring device | |
| CN104698320A (en) | On-line measuring device and method for electrical parameters of power transmission and distribution line | |
| CN106646034A (en) | Lightning arrester structure health online monitoring analysis system | |
| CN105353200A (en) | On-line monitoring system for DC magnetic bias current of transformer | |
| CN2881820Y (en) | Data collection system of thyristor valve overcurrent test device | |
| CN103278678A (en) | Lightning overvoltage measuring system | |
| CN104459497A (en) | Device for measuring and analyzing partial discharge under surge voltage | |
| CN104765302A (en) | Detection device for power supply system of substation routing inspection device | |
| CN203259588U (en) | Lightning overvoltage measuring system | |
| CN203164360U (en) | Transformer device insulation online monitoring system | |
| CN202794323U (en) | Thunder monitoring system and thunder monitoring terminal | |
| CN204832330U (en) | Transient overvoltage monitoring facilities | |
| CN104360145A (en) | Data acquisition card based voltage sag monitoring device | |
| CN203084093U (en) | Monitor used for lightning arrester | |
| CN103944572B (en) | Ultra-high speed sampling rate harvester and method | |
| CN205941741U (en) | Electrical power quality data collection system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070321 |
|
| EXPY | Termination of patent right or utility model |