CN102087308A - Electric quantity acquisition and test analyzer and method for power system - Google Patents
Electric quantity acquisition and test analyzer and method for power system Download PDFInfo
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- CN102087308A CN102087308A CN2009100733425A CN200910073342A CN102087308A CN 102087308 A CN102087308 A CN 102087308A CN 2009100733425 A CN2009100733425 A CN 2009100733425A CN 200910073342 A CN200910073342 A CN 200910073342A CN 102087308 A CN102087308 A CN 102087308A
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Abstract
The invention discloses an electric quantity acquisition and test analyzer and an electric quantity acquisition and test method for a power system, and relates to a multi-channel electrical test analyzer which is not common in ground, has high isolation, performs synchronous high-speed acquisition, can adjust recording time and adjust sampling frequency and is applied to various voltage classes of the power system, and an electrical test method. An acquisition and test analyzer which acquires data at high speed and automatically records and stores and displays transient electric quantity is adopted. The analyzer can simultaneously and synchronously record a transient waveform, the transient waveform of the electric quantity can be automatically or manually recorded, and overvoltage, inrush current, harmonic waves and the like of various transient waveforms are calculated. The sampling frequency and the recording time are adjustable. The device adopts an embedded operating system and a transmission control protocol (TCP)/internet protocol (IP) standard communication protocol, can realize remote control and synchronization control of the same instrument, and is suitable for a test environment with a complex power system. Steady and transient electric quantity is measured under various working conditions, data can be analyzed and processed, and the analyzer and the method have wide application in debugging, operation and scientific research of the power system.
Description
Technical field
The present invention relates to a kind of instrument and the method that can finish the transient measuring of multiple electrical test in the electric system, be particularly related to a kind of hyperchannel, not altogether, high isolation, synchronous high-speed collection, adjustable writing time, adjustable sample frequency, be applicable to the electrical test measuring and analysing meter and the method for each electric pressure of electric system.
Background technology
In the measurement of classic method various electric parameters transient state parts in to electrical test, often adopt light oscillograph, magnetic tape station, fault oscillograph, and some measurement means advanced persons' fine measuring instrument, more or less there is following subject matter in they: can not start record automatically, picking rate is low, the synchronous recording passage is few, each passage altogether, few or do not have etc. to the electric parameter software analysis function that records.Electric system electric parameters collecting test analyser and the method that the present invention relates to have well solved above-mentioned all problems, accomplished the transient state electric parameters is carried out measurement under the various working, and can carry out analyzing and processing to data, satisfy electric system and produced the needs of actual and scientific research.
Electric system electric parameters collecting test analyser that the present invention relates to and method can be finished the transient measuring of various electrical tests in the electric system, for example: superpotential test, switch on-off, reactor switching, transformer switching, high-tension line switching, big upset test and black starting characteristics test and non electrical quantities measurement etc., accomplished stable state and transient state electric parameters are carried out measurement under the various working, and can carry out analyzing and processing data.Can multichannel, synchronously, each voltage and current need write down in the high speed acquisition electrical test transient state part, can adapt to complex situations such as on-the-spot various superpotential, excess current, strong electromagnetic.Solve other surveying instrument in original test method and in the electric system electrical test, measured the various problems that the transient state amount exists, and the parameter that is difficult to measure, and can find the problem that electrical equipment exists in test.
The transient measuring that electric system electric parameters collecting test analyser that the present invention relates to and method are carried out electrical test, can carry out various labors afterwards to test data sheet, can obtain superpotential multiple, electric current and shove that voltage and current oscillation frequency, harmonic wave etc. are analyzed result of calculations constantly for multiple, switching.The automatic startup of voltage and current can be set in electrical test simultaneously easily, can write down lot of data, the record number of times is unrestricted.The development approach of standard has been adopted in software development, has adopted general TCP/IP communications protocol simultaneously.
Summary of the invention
The objective of the invention is to deficiency, solved the gordian technique of the transient state waveform recording of electrical test, a kind of method that can carry out the waveform recording of electrical test transient state in each electric pressure is provided at existing electric system electrical test transient measuring technology.Adopt 16 tunnel high-speed synchronous multichannel collectings, automatically start, manually boot, calculate, the transient state waveform that needs testing apparatus in statistics and the stored electricity test, frequency acquisition is adjustable from 2kHz～100kHz, writing time is adjustable by 30 minutes from 400 milliseconds, the recording means that fully adapts to the various electrical test needs of electric system, all passages do not eliminated the interference each other of each electric parameters altogether, the strong jamming that the instrument power supply design of isolating produces the earth potential pressure reduction in the electrical test is overcome, and therefore is unlikely to cause because of the impact of transient voltage the puncture of instrument in the electrical test that some is suited electrical equipment.The software of device adopts embedded OS, adopts standard TCP/IP communications protocol, can realize distant place control and transmission.
Electric system electric parameters collecting test analyser of the present invention has solved the electrical test of the transient state electric parameters waveform recording that electric system in the past can't carry out, for example: the over-voltage measurement of transformer switching, reactor and capacitor switching etc.
The technical solution used in the present invention is: device is by forming with the lower part: notebook computer, the high instrument container of standard 6U, voltage signal disposable plates, current signal disposable plates, common signal backboard, built-in industrial control machine, 44 passage synchronous high-speed capture cards, 6 cun LCD, AC power isolated part and input terminals etc.
Apparatus of the present invention can synchronous acquisition 16 tunnel electric parameters, and the synchronous acquisition frequency can reach 100kHz.Each road voltage analog passage inserts voltage, can insert from voltage transformer secondary side, also can be inserted by the voltage divider low-voltage arm.Each road current analog passage inserts electric current, can insert from the series connection of Current Transformer Secondary side, adopts the punching mutual inductor to guarantee not open a way.
The voltage signal disposable plates be designed to can processes voltage the transient signal characteristics, solved voltage transient fast and changed the harm of the superpotential that causes data acquisition card, solve the strong electromagnetic of electric system simultaneously, accurately measured the superpotential voltage signal of high frequency.The electric simulation amount all adopts both-end input, and all channel signals are isolated not altogether, has overcome interchannelly to disturb altogether.
Built-in industrial control machine and synchronous high-speed capture card are gathered, are calculated and store the signal after handling, and acquisition software, Control Software, analysis software and bitcom environment are provided.The high-speed synchronous data acquiring card can provide 16 tunnel electrical quantities measurement.Capture card is the PCI type, and industrial control computer mainboard adopts Intel P42.0G CPU, internal memory 1G, and hard disk 160G capacity adopts standard TCP/IP communications protocol.Acquisition software, Control Software, analysis software and bitcom supervisor adopt the standard C language exploitation.Instrument integral body is black pattern mode, uses the RJ45 network interface to carry out communication by notebook computer and instrument, can realize Long-distance Control and data transmission.Automatically activated signal adopts the sudden change amount mode of voltage and current to start.
The 220V ac power supply system that step-down is isolated makes the power supply and the externally fed power supply electromagnetic isolation of device, when avoiding the on-the-spot supply voltage of electric system higher, has avoided the noise jamming of power supply.
Apparatus of the present invention exploitation upper computer analyzing software with the C Plus Plus exploitation, can realize the data analysis of off-line and the demonstration and the printing function of waveform under windows operating system.It mainly is to work out data and curves amplification computing function and statistical report form function flexibly that data are analyzed demonstration, can carry out various calculating, comprising: superpotential multiple and frequency, shove multiple and frequency, transient state harmonic wave forms and percent harmonic distortion etc.The printing function that provides can provide the printing of various curves and result of calculation easily, and the chart printing function of various statisticss is provided simultaneously.
The invention has the beneficial effects as follows:
1) apparatus of the present invention are record transient voltage and current waveforms in electrical test, and frequency acquisition can reach 16 passage synchronous acquisition frequency 100kHz, and the transient state waveform recording time can reach 30 minutes.Frequency acquisition is adjustable from 2kHz～100kHz, and writing time is adjustable by 30 minutes from 400 milliseconds.Can realize reaching the overall process record for electric system electrical test transient state waveform.Simultaneously, can write down waveform above 4 times of 5 times of rated voltages and rated current.
2) apparatus of the present invention can be carried out superpotential and the multiple that shoves and the calculating of frequency to self registering superpotential and the transient state of shoving waveform, can calculate simultaneously the harmonic wave of any one cycle in the waveform, provide harmonic wave resultant distortion rate, 2-100 time harmonic value and harmonic content.
3) apparatus of the present invention possess the stored record data and reach cycle index 1000 times, can carry out on-line measurement for a long time.
4) apparatus measures adopts the Starting mode of voltage and current sudden change amount.Apparatus of the present invention can arbitrary value be set the voltage and current startup value of any passage, and a power frequency cycle can judge whether to reach entry condition, and the judgment mode of window type can be pounced on and grasp rising sharply and rapid drawdown of voltage and current.The function of manual record is provided, is used to measure the voltage and current waveform of current time.
5) apparatus of the present invention adopt embedded OS, possess the computer networking function, can realize Long-distance Control, data transmission and data analysis, and the data analysis software of off-line is provided, and the statistical report form function of various transient state wave form analyses is provided.
Description of drawings
Fig. 1 is one-piece construction figure of the present invention.
Fig. 2 is an electric system electric parameters collecting test analyser method flow diagram.
Embodiment
A kind of electric system electric parameters collecting test analyser and method are utilized instrument of the present invention, and by the transient state record wave measurement that program is carried out various electrical tests, its concrete method step is as follows:
(1) initialization
The electrical test of carrying out as required, the voltage and current passage of select measuring is set startup value, selection frequency acquisition, data record size, user's name and the infield etc. of the voltage and current of different acquisition channels.Parameter is set in instrument by the host computer procedure in the notebook computer, the embedded program in the instrument starts according to the parameter of setting, the operation capture program.
(2) data acquisition
(1) step finish after, carry out the monitoring of real-time online circle collection by the measurement passage that inserts this device by the voltage transformer (VT) summation current transformer, measure the electric signal of 16 passages by the high-speed synchronous data acquiring card, real-time acquired signal, per five power frequency cycles carry out a data analysis and judge, carry out the judgement of data communication simultaneously, judge whether that host computer has sent instruction.Peak value behind each channel filtering that obtains, compare with the initial value of each path setting before, if passage difference does not relatively all surpass the startup value of respective channel arbitrarily, then current peak value is set to new initial value, continue the circle collection data, carry out round-robin relatively; If the difference of a certain passage comparison has surpassed the startup value, the data of all 16 passages of opening entry then, the time span that continuous recording is set, with the current beginning that starts preceding 5 cycles of the moment as record, the transient state waveform that obtains so then comprises before the fault and the complete waveform after the fault simultaneously.
(3) transient state waveform data storage
(2) step in, finish the data of a stipulated time length at record after, with the record data carry out data processing such as filtering, final data is stored in the hard disk, write various parameter setting information in data file.Turned back to for (2) step after storage finishes, proceed data acquisition.
(4) data storage, Long-distance Control and data transmission
The ICP/IP protocol of standard, make instrument possess the IP address, the computing machine that upper computer software is installed arbitrarily in notebook computer or the computer network can carry out communication with instrument, the remote analysis and the control of instrument can be realized like this, the remote transmission of data file can be carried out simultaneously.Upper computer software can carry out the various data analysis functions and the chart printing function of off-line.
Apparatus of the present invention possess by computer network carries out distant place control and transfer function, adopt embedded OS, employing standard TCP/IP communications protocol, device can be arranged to IP address arbitrarily, can realize that by any computing machine that upper computer software is installed on the computer network real-time control apparatus controls, analyzes, shows and function such as transmission.Device at substation operation joins computer network as long as pass through the standard computer netting twine, disposes corresponding IP address simultaneously, just can be implemented on the computer network and no matter still controls and data transmission in the strange land in the locality.
The voltage signal of instrument can be from voltage transformer secondary side, or the voltage divider low-voltage arm inserts apparatus of the present invention, and current signal can insert from the series connection of Current Transformer Secondary side.Through overvoltage signal disposable plates and current signal disposable plates, pass through the selection of switch again, in the small voltage signal high-speed synchronous data acquiring card after handling, acquisition software will be according to concrete parameter circle collection processing signals, after reaching the entry condition of setting or carry out the record of voltage and current waveform after receiving control command, the data that obtain are calculated and stored.
Claims (9)
1. electric system electric parameters collecting test analyser and method is characterized in that: comprise notebook computer, the high instrument container of standard 6U, voltage signal disposable plates, current signal disposable plates, common signal backboard, built-in industrial control machine, 44 passage synchronous high-speed capture cards, 6 cun LCD and AC power isolated part and input terminal.
2. a kind of electric system electric parameters collecting test analyser according to claim 1 and method is characterized in that: voltage analog 16 tunnel, current analog amount 16 tunnel, 16 road manual change-over switch, 16 passages frequency acquisition simultaneously can reach 100kHz.Each road voltage analog passage inserts voltage, can insert from voltage transformer secondary side, also can be inserted by the voltage divider low-voltage arm; Each road current analog passage inserts electric current, can insert from the series connection of Current Transformer Secondary side, adopts the punching mutual inductor to guarantee not open a way.
3. a kind of electric system electric parameters collecting test analyser according to claim 1 and method is characterized in that: the data transient state waveform characteristics that need gather at the electric various tests of electric system design; Considered the processing of the transient signal of over-voltage measurement on circuit design emphatically, the logical frequency of band reaches 500kHz; The voltage and current signal all adopts the both-end input, and each road signal is isolated from each other not altogether, simultaneously, primary side and secondary side is carried out the photoelectricity isolation, guarantees the safety and the measuring accuracy of equipment capture card.
4. a kind of electric system electric parameters collecting test analyser according to claim 1 and method is characterized in that: the voltage and current signal-processing board that inserts instrument internal after the voltage and current process voltage transformer (VT) summation current transformer conversion of electric system; In signal plate through circuit such as isolation, filtering, the range of decrease, noise reduction be transformed into ± 5V is with interior low voltage signal, carry out being input in the synchronous collecting card after the channel selecting through 16 road manual change-over switch; Adopt the electric supply system of isolating,, avoid the interference of alternating current 220V power supply whole harvester and external isolation.
5. a kind of electric system electric parameters collecting test analyser according to claim 1 and method, it is characterized in that: built-in industrial control machine and 16 road synchronous high-speed capture cards are responsible for signal is gathered, calculated and stores, and Control Software and communication part software runtime environment are provided simultaneously; 16 road voltages or current signal are connected to 16 passages, in the 100kHz/s synchronous high-speed capture card at last by in the circuit board in the terminal board access instrument container.
6. a kind of electric system electric parameters collecting test analyser according to claim 1 and method, it is characterized in that: it is adjustable from 2kHz～100kHz that apparatus of the present invention can be set frequency acquisition, and writing time is adjustable by 30 minutes from 400 milliseconds; Simultaneously, can cooperate by manual change-over switch and software and set any passage collection voltage or electric current, promptly can gather 16 road voltages simultaneously, perhaps gather 16 road electric currents simultaneously, perhaps add up to 16 tunnel voltage and current combination.
7. a kind of electric system electric parameters collecting test analyser according to claim 1 and method is characterized in that: apparatus of the present invention can be set waveform recording startup value arbitrarily to any passage, and the function of manual record real-time waveform is provided simultaneously; Automatically activated signal adopts the sudden change amount window mode of voltage and current to start.
8. a kind of electric system electric parameters collecting test analyser according to claim 1 and method, it is characterized in that: the monitoring that this device can carry out superpotential and shove, the superpotential of record and the transient state waveform that shoves are provided, superpotential and shove multiple, frequency and time span etc. are calculated in the wave form analysis that can carry out superpotential and shove; Simultaneously, can carry out the record and the analysis of transient state harmonic wave, harmonic information such as each harmonic value and total percent harmonic distortion are provided.
9. a kind of electric system electric parameters collecting test analyser according to claim 1 and method, it is characterized in that: device possesses Long-distance Control and transfer function, adopt the TCP/IP communications protocol, the IP address of setting device, by the browser in other computing machine in the computer network, can real-time control apparatus, setup parameter carries out the functions such as transmission of data analysis and data.
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| CN2009100733425A CN102087308A (en) | 2009-12-04 | 2009-12-04 | Electric quantity acquisition and test analyzer and method for power system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323979A (en) * | 2011-07-18 | 2012-01-18 | 深圳市康必达中创科技有限公司 | Processing method for converting fault records into harmonics |
| CN102853865A (en) * | 2012-09-13 | 2013-01-02 | 浙江永成机械有限公司 | Multifunctional online detection device |
| CN103487625A (en) * | 2013-09-13 | 2014-01-01 | 国家电网公司 | Electric system transient waveform storage monitoring system and monitoring method thereof |
| CN108037393A (en) * | 2017-12-14 | 2018-05-15 | 武汉天富海科技发展有限公司 | Monitor the system and method for power electronics equipment key state in forceful electric power magnetic environment |
| CN112014676A (en) * | 2020-09-11 | 2020-12-01 | 西安高压电器研究院有限责任公司 | Switching test device for capacitor device type test |
-
2009
- 2009-12-04 CN CN2009100733425A patent/CN102087308A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323979A (en) * | 2011-07-18 | 2012-01-18 | 深圳市康必达中创科技有限公司 | Processing method for converting fault records into harmonics |
| CN102853865A (en) * | 2012-09-13 | 2013-01-02 | 浙江永成机械有限公司 | Multifunctional online detection device |
| CN103487625A (en) * | 2013-09-13 | 2014-01-01 | 国家电网公司 | Electric system transient waveform storage monitoring system and monitoring method thereof |
| CN108037393A (en) * | 2017-12-14 | 2018-05-15 | 武汉天富海科技发展有限公司 | Monitor the system and method for power electronics equipment key state in forceful electric power magnetic environment |
| CN112014676A (en) * | 2020-09-11 | 2020-12-01 | 西安高压电器研究院有限责任公司 | Switching test device for capacitor device type test |
| CN112014676B (en) * | 2020-09-11 | 2023-10-13 | 西安高压电器研究院股份有限公司 | Switching test device for capacitor device type test |
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Effective date of registration: 20121022 Address after: 150030 Xiangjiang Road, Xiangfang District, Heilongjiang, No. 7, No. Applicant after: Heilongjiang Electric Power Research Institute Applicant after: State Grid Corporation of China Address before: 150030 Xiangjiang Road, Xiangfang District, Heilongjiang, No. 7, No. Applicant before: Heilongjiang Electric Power Research Institute |
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Application publication date: 20110608 |