CN101770005A - DC electronic transformer calibration device and method - Google Patents
DC electronic transformer calibration device and method Download PDFInfo
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- CN101770005A CN101770005A CN201010100218A CN201010100218A CN101770005A CN 101770005 A CN101770005 A CN 101770005A CN 201010100218 A CN201010100218 A CN 201010100218A CN 201010100218 A CN201010100218 A CN 201010100218A CN 101770005 A CN101770005 A CN 101770005A
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Abstract
The invention discloses a DC electronic transformer calibration device and a method; the device comprises a hardware part and a software part, wherein, the software part is Labview software running on the computer; the connecting structure of the hardware part is as follows: a DC high-voltage generator or a DC large-current generator are respectively connected with a DC proportion standard and to-be-tested transformer port; the DC proportion standard is connected with a standard resistor or a voltage divider, the standard resistor or the voltage divider are connected with the computer; the to-be-tested transformer port is connected with a multimode fiber optic transceiver; the multimode fiber optic transceiver is connected with the computer; the computer and the to-be-tested transformer port are connected with a sync source. The advantages of the invention are as follows: the adaptability is good, different proportion standards are provided, various DC electronic transformers can be calibrated, the performance is accurate and reliable, and the using is convenient.
Description
Technical field:
What the present invention relates to is the checking electronic type transformers device and method, a kind of specifically DC electronic transformer calibration device and method based on virtual instrument.
Background technology:
Photoelectric technology and fast development of computer technology make electronic mutual inductor show wide prospect and great vitality.Electronic mutual inductor makes full use of the various excellent specific properties of electro-optic crystal and the advantage of modern optical power technology, signal processing adopts advanced digital signal processing technique, have the good insulation performance performance, stronger shoulder electromagnetic interference capability, measure bandwidth, dynamic range is big etc., have real-time, rapidity and be convenient to carry out characteristics such as complicated algorithm processing.Electronic mutual inductor causes that power industry pays close attention to widely in recent years, adds the catalysis and the promotion of DSP technology and photoelectric technology, shows good growth momentum.
For guaranteeing the charge of electrical network charge critical point point accurately and the good realization of control, protection, measurement function, electronic mutual inductor is necessary that the verification of being correlated with tests, thereby safeguards the safe and stable operation of electrical network.The also relevant patent of present DC electronic transformer calibration device based on virtual instrument, thereby under such background, apply for this patent.
Summary of the invention:
Purpose of the present invention is exactly to be badly in need of carrying out the accuracy verification at electronic mutual inductor, and the electronic type calibration equipment is also fewer, so propose a kind of DC electronic transformer calibration device and method based on virtual instrument.
The technical scheme that adopts:
The present invention addresses the above problem the solution that is adopted to be: a kind of DC electronic transformer calibration device and method based on virtual instrument, comprise hardware components and software section, hardware components comprises standard source, the up-flow device that boosts, multimode optical fiber transceiver, synchronisation source, measuring resistance or voltage divider, computing machine, and software section then is the Labview software that moves on computers; The syndeton of this device is: generators of high direct voltage or D.C. high-current generator are connected with to-be-tested transformer port with the direct current ratio standard respectively; The direct current ratio standard is connected with measuring resistance or voltage divider, and measuring resistance or voltage divider are connected with computing machine again; And to-be-tested transformer port is connected with the multimode optical fiber transceiver; And the multimode optical fiber transceiver is connected with computing machine; On computing machine and to-be-tested transformer, be connected with synchronisation source.
Apparatus of the present invention adopt simulating signal, digital signal and synchronizing signal to carry out data acquisition, the data of gathering are carried out Fourier transform, spectrum analysis after data filtering, windowing, obtain respectively after the analysis waveform and frequency spectrum show, than angular difference show, data adjustment and parameter setting, the setting of combiner parameter.
Method of calibration of the present invention is, if verification DC electronic current transformer, standard source is the identical current ratio standard of rated primary current, the up-flow device that boosts is D.C. high-current generator and regulating device, if verification DC electronic voltage transformer (VT), standard source is the voltage ratio standard of identical electric pressure, and the up-flow device that boosts is generators of high direct voltage and regulating device.
407061/2 high-precision analog amount capture card that America NI company is housed in the computing machine of the present invention is as input front end processor.
The present invention is the digital signal of unified electronic mutual inductor output and the simulating signal of standard source, and described synchronisation source produces synchronous triggering signal so that the sampling simultaneously of America NI company 4070 cards.
Fiber optical transceiver of the present invention is a kind of Ethernet transmission medium converting unit that the light signal of short-range twisted-pair feeder electric signal and long distance is exchanged; On generators of high direct voltage or D.C. high-current generator, also be connected with regulating device.
Based on above-mentioned, realize the invention reside in:
1, the integrated circuit board of the collection and utilization America NI company 4070 of simulating signal is realized Fourier's Fast transforms, the sub-vi of signal Processing that signal Processing and analysis and utilization Labview provide realizes immediately, the detection of hardware (NI integrated circuit board) and the Measurement Studio (software that NI company provides) that calibrates use NI company, confirm the good of hardware state, greatly shorten the procedure development time.
2, digital signal adopts the multimode optical fiber transceiver to be converted into the digital electric signal that utilizes the twisted-pair feeder transmission, thereby the integrated circuit board of America NI company can be gathered smoothly.
3, the up-flow device that boosts will be matched corresponding generators of high direct voltage or D.C. high-current generator according to electronic mutual inductor parameter to be measured, so that can be raised in test the rated voltage or the rated current of electronic mutual inductor to be measured.
4, synchronisation source will produce synchronous triggering signal so that NI company 4070 blocks sample the simultaneously digital signal of electronic mutual inductor output and the simulating signal of standard source.
5, utilize the program of the Measurement Studio of NI company (software that NI company provides) exploitation, principle in strict accordance with the indirect method of measurement compares electronic mutual inductor to be measured and conventional ratio standard output signal, calculate the ratio angular difference of electronic mutual inductor to be measured, thereby determine the quality of electronic mutual inductor performance to be measured.
Further set forth content of the present invention below in conjunction with drawings and Examples
Description of drawings:
Fig. 1 is an invention syndeton synoptic diagram;
Fig. 2 is a DC electronic current transformer check plot of the present invention;
Fig. 3 is a DC electronic voltage transformer (VT) check plot of the present invention;
Fig. 4 is a Labview software architecture diagram of the present invention.
Embodiment:
A kind of DC electronic transformer calibration device, it is characterized in that, comprise hardware components and software section, hardware components comprises conventional direct current ratio standard, generators of high direct voltage or D.C. high-current generator, multimode optical fiber transceiver, synchronisation source, measuring resistance or voltage divider, computing machine; Software section then is the Labview software that moves on computers; The syndeton of this device is: generators of high direct voltage or D.C. high-current generator are connected with to-be-tested transformer port with the direct current ratio standard respectively; The direct current ratio standard is connected with measuring resistance or voltage divider, and measuring resistance or voltage divider are connected with computing machine again; And to-be-tested transformer port is connected with the multimode optical fiber transceiver; And the multimode optical fiber transceiver is connected with computing machine; On computing machine and to-be-tested transformer, be connected with synchronisation source.As Fig. 1.
Apparatus of the present invention adopt simulating signal, digital signal and synchronizing signal to carry out data acquisition, the data of gathering are carried out Fourier transform, spectrum analysis after data filtering, windowing, obtain respectively after the analysis waveform and frequency spectrum show, than angular difference show, data adjustment and parameter setting, the setting of combiner parameter.
If the present invention's verification DC electronic current transformer, standard source is the identical current ratio standard of rated primary current, the up-flow device that boosts is D.C. high-current generator and regulating device, if verification DC electronic voltage transformer (VT), standard source is the voltage ratio standard of identical electric pressure, and the up-flow device that boosts is generators of high direct voltage and regulating device.Fig. 2 is a DC electronic current transformer check plot of the present invention; Fig. 3 is a DC electronic voltage transformer (VT) check plot of the present invention.
40706 of America NI company is housed in the computing machine of the present invention
1/
2Position high-precision analog amount capture card is as input front end processor.
The present invention is the digital signal of unified electronic mutual inductor output and the simulating signal of standard source, and described synchronisation source produces synchronous triggering signal with the sampling simultaneously of America NI company 4070 cards.
Described fiber optical transceiver is a kind of Ethernet transmission medium converting unit that the light signal of short-range twisted-pair feeder electric signal and long distance is exchanged; On generators of high direct voltage or D.C. high-current generator, also be connected with regulating device.
Of the present invention based on Labview software architecture diagram in the DC electronic transformer calibration device of virtual instrument as shown in Figure 4.If standard source and to-be-tested transformer are the voltage ratio standards, the up-flow device that boosts is raised to 80% of specified voltage to voltage, 100%, 120%, standard source secondary terminal output aanalogvoltage outputs to voltage divider, through behind the voltage transformation simulating signal 5V voltage is outputed to PC (interior dress Labview program), electronic mutual inductor secondary terminal output optical fibre signal to be measured outputs to the multimode optical fiber transceiver, be transformed into the twisted-pair feeder electric signal by the multimode optical fiber transceiver again and output to PC (interior dress Labview program), wherein synchronisation source mainly carries out synchronously simulating signal and digital signal in the PC (interior dress Labview program), as shown in Figure 4.
Principal feature based on the DC electronic transformer calibration device of virtual instrument is embodied on the software, the G Programming with Pascal Language that its adopts Labview Software Development Platform to provide, the data processing of device, analysis, calculating, storage, demonstration and printing, function such as communicate by letter all realize by software.The main process module of software as shown in Figure 3, virtual instrument program at first twisted-pair feeder is imported data collecting card into, read in digital signal from data collecting card, then digital signal is carried out data processing such as digital filtering and windowing, wherein have waveform and frequency spectrum show, than angular difference show, data adjustment and parameter are provided with etc.
The major function of device has:
1, waveform and frequency spectrum show: can show direct current ratio standard and to-be-tested transformer boost waveform and amplitude frequency spectrum behind the up-flow respectively;
2, show than angular difference: the result that direct current ratio standard and to-be-tested transformer are boosted behind the up-flow subtracts each other, and shows the residual error waveform;
3, data adjustment and parameter setting: at the curtage ratio standard to be measured of different model, change software setting and parameter respectively, thereby make the Labview program can normal process;
This software is installed on the PC, and is in light weight, portable, thereby conveniently the various electronic mutual inductors in scene are checked.Maximum characteristics are that the user can be self-defined according to the ratio standard of different model, and promptly the user can be according to the needs change of oneself or the function of expanding device, and next installs strong functions also is that other similar electronic product is incomparable with high reliability.
Press such scheme, described compatibility based on the Labview program in the DC electronic transformer calibration device of virtual instrument also be embodied in following some:
1, to the electronic mutual inductor of different model, no matter still can both the analyzing of electric current of voltage compared angle error.
2, in process of the test, program is wanted and can be monitored in real time the digital signal of electronic mutual inductor output.
3, program is by the program adjustment, can analyze the digital signal of various electronic mutual inductors outputs and the simulating signal of standard source, and the signal after will subtracting each other shows and prints.
Virtual instrument is also fewer in the application of electric system, adopt the DC electronic transformer calibration device and the method for this technology development, continuous construction along with DC line, its application will improve the field-checking level and the automatization level of electric system ratio standard greatly, is the important evidence of estimating and improve the DC electronic transformer performance.
Claims (6)
1. DC electronic transformer calibration device, it is characterized in that, comprise hardware components and software section, hardware components comprises conventional direct current ratio standard, generators of high direct voltage or D.C. high-current generator, multimode optical fiber transceiver, synchronisation source, measuring resistance or voltage divider, computing machine; Software section then is the Labview software that moves on computers; The syndeton of this device is: generators of high direct voltage or D.C. high-current generator are connected with to-be-tested transformer port with the direct current ratio standard respectively; The direct current ratio standard is connected with measuring resistance or voltage divider, and measuring resistance or voltage divider are connected with computing machine again; And to-be-tested transformer port is connected with the multimode optical fiber transceiver; And the multimode optical fiber transceiver is connected with computing machine; On computing machine and to-be-tested transformer, be connected with synchronisation source.
2. the method for calibration of a kind of DC electronic transformer calibration device according to claim 1, it is characterized in that: this device adopts simulating signal, digital signal and synchronizing signal to carry out data acquisition, the data of gathering are carried out Fourier transform, spectrum analysis after data filtering, windowing, obtain respectively after the analysis waveform and frequency spectrum show, than angular difference show, data adjustment and parameter setting, the setting of combiner parameter.
3. the method for calibration of a kind of DC electronic transformer calibration device according to claim 1, it is characterized in that: if verification DC electronic current transformer, standard source is the identical current ratio standard of rated primary current, the up-flow device that boosts is D.C. high-current generator and regulating device, if verification DC electronic voltage transformer (VT), standard source is the voltage ratio standard of identical electric pressure, and the up-flow device that boosts is generators of high direct voltage and regulating device.
4. the method for calibration of a kind of DC electronic transformer calibration device according to claim 1, it is characterized in that: 4,070 61/2 high-precision analog amount capture cards that America NI company is housed in the described computing machine are as input front end processor.
5. the method for calibration of a kind of DC electronic transformer calibration device according to claim 1, it is characterized in that: be the digital signal of unified electronic mutual inductor output and the simulating signal of standard source, described synchronisation source produces synchronous triggering signal with the sampling simultaneously of America NI company 4070 cards.
6. the method for calibration of a kind of DC electronic transformer calibration device according to claim 1 is characterized in that: described fiber optical transceiver is a kind of Ethernet transmission medium converting unit that the light signal of short-range twisted-pair feeder electric signal and long distance is exchanged; On generators of high direct voltage or D.C. high-current generator, also be connected with regulating device.
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| CN201010100218A CN101770005A (en) | 2010-01-22 | 2010-01-22 | DC electronic transformer calibration device and method |
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| CN201010100218A CN101770005A (en) | 2010-01-22 | 2010-01-22 | DC electronic transformer calibration device and method |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950009A (en) * | 2010-08-20 | 2011-01-19 | 云南电力试验研究院(集团)有限公司 | Three-phase intelligent transformer calibrator |
| CN102129058A (en) * | 2010-12-15 | 2011-07-20 | 中国西电电气股份有限公司 | Direct-current voltage divider calibration device for direct-current power transmission system |
| CN102565583A (en) * | 2012-01-04 | 2012-07-11 | 天津市电力公司 | Power quality monitoring terminal for switch-in electronic mutual inductor |
| CN102785603A (en) * | 2012-07-24 | 2012-11-21 | 苏州华电电气股份有限公司 | Extra-high voltage power transformer calibration car |
| CN102798837A (en) * | 2012-08-14 | 2012-11-28 | 上海电器科学研究院 | Phase error correcting circuit and method of power frequency signal vector measuring equipment |
| CN102879758A (en) * | 2012-09-18 | 2013-01-16 | 广东电网公司电力科学研究院 | Standard source and detecting device both used for detecting harmonic influence quantity of electronic current transformer |
| CN102928803A (en) * | 2012-10-18 | 2013-02-13 | 中国电力科学研究院 | Electronic transformer checking device based on synchronization pulse output power supply |
| CN103472273A (en) * | 2013-09-11 | 2013-12-25 | 国家电网公司 | Etalon of electronic voltage mutual inductor and verifying structures of electronic voltage mutual inductor |
| CN103840674A (en) * | 2014-03-04 | 2014-06-04 | 国家电网公司 | Self-adaptive current generating system and method of calibration direct-current mutual inductor |
| CN103955210A (en) * | 2014-05-09 | 2014-07-30 | 国家电网公司 | Direct-current protection verification method |
| CN104391264A (en) * | 2014-12-05 | 2015-03-04 | 上海市计量测试技术研究院 | System and method for checking multifunctional electronic transformer |
| CN105301348A (en) * | 2014-05-27 | 2016-02-03 | 深圳市方隅光电科技有限公司 | Temperature characteristic testing system and method of all-fiber optical current transformer |
| CN106405470A (en) * | 2016-11-09 | 2017-02-15 | 中国电力科学研究院 | Overall detection method and apparatus for harmonic accuracy of electronic current transformer |
| CN110441724A (en) * | 2019-07-24 | 2019-11-12 | 国网新疆电力有限公司电力科学研究院 | A kind of device for being verified to DC voltage transformer secondary measuring system |
| CN113552526A (en) * | 2021-09-16 | 2021-10-26 | 国网湖北省电力有限公司营销服务中心(计量中心) | Error detection device for pulse harmonic signal direct current transformer and calibration method thereof |
| CN115032582A (en) * | 2022-08-12 | 2022-09-09 | 武汉磐电科技股份有限公司 | Multifunctional mutual inductor calibration device and method |
-
2010
- 2010-01-22 CN CN201010100218A patent/CN101770005A/en active Pending
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950009A (en) * | 2010-08-20 | 2011-01-19 | 云南电力试验研究院(集团)有限公司 | Three-phase intelligent transformer calibrator |
| CN102129058A (en) * | 2010-12-15 | 2011-07-20 | 中国西电电气股份有限公司 | Direct-current voltage divider calibration device for direct-current power transmission system |
| CN102565583A (en) * | 2012-01-04 | 2012-07-11 | 天津市电力公司 | Power quality monitoring terminal for switch-in electronic mutual inductor |
| CN102785603A (en) * | 2012-07-24 | 2012-11-21 | 苏州华电电气股份有限公司 | Extra-high voltage power transformer calibration car |
| CN102798837A (en) * | 2012-08-14 | 2012-11-28 | 上海电器科学研究院 | Phase error correcting circuit and method of power frequency signal vector measuring equipment |
| CN102879758A (en) * | 2012-09-18 | 2013-01-16 | 广东电网公司电力科学研究院 | Standard source and detecting device both used for detecting harmonic influence quantity of electronic current transformer |
| CN102928803A (en) * | 2012-10-18 | 2013-02-13 | 中国电力科学研究院 | Electronic transformer checking device based on synchronization pulse output power supply |
| CN103472273A (en) * | 2013-09-11 | 2013-12-25 | 国家电网公司 | Etalon of electronic voltage mutual inductor and verifying structures of electronic voltage mutual inductor |
| CN103472273B (en) * | 2013-09-11 | 2016-02-03 | 国家电网公司 | Electronic type voltage transformer standard and electronic type voltage transformer verification structure |
| CN103840674A (en) * | 2014-03-04 | 2014-06-04 | 国家电网公司 | Self-adaptive current generating system and method of calibration direct-current mutual inductor |
| CN103840674B (en) * | 2014-03-04 | 2016-09-28 | 国家电网公司 | A kind of self-adaptive current generation system calibrating direct current instrument transformer and method for generation thereof |
| CN103955210A (en) * | 2014-05-09 | 2014-07-30 | 国家电网公司 | Direct-current protection verification method |
| CN105301348A (en) * | 2014-05-27 | 2016-02-03 | 深圳市方隅光电科技有限公司 | Temperature characteristic testing system and method of all-fiber optical current transformer |
| CN104391264A (en) * | 2014-12-05 | 2015-03-04 | 上海市计量测试技术研究院 | System and method for checking multifunctional electronic transformer |
| CN106405470A (en) * | 2016-11-09 | 2017-02-15 | 中国电力科学研究院 | Overall detection method and apparatus for harmonic accuracy of electronic current transformer |
| CN110441724A (en) * | 2019-07-24 | 2019-11-12 | 国网新疆电力有限公司电力科学研究院 | A kind of device for being verified to DC voltage transformer secondary measuring system |
| CN113552526A (en) * | 2021-09-16 | 2021-10-26 | 国网湖北省电力有限公司营销服务中心(计量中心) | Error detection device for pulse harmonic signal direct current transformer and calibration method thereof |
| CN113552526B (en) * | 2021-09-16 | 2022-01-18 | 国网湖北省电力有限公司营销服务中心(计量中心) | Error detection device for pulse harmonic signal direct current transformer and calibration method thereof |
| WO2023040557A1 (en) * | 2021-09-16 | 2023-03-23 | 国网湖北省电力有限公司营销服务中心(计量中心) | Error detection apparatus for pulsating harmonic signal direct-current transformer |
| CN115032582A (en) * | 2022-08-12 | 2022-09-09 | 武汉磐电科技股份有限公司 | Multifunctional mutual inductor calibration device and method |
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Application publication date: 20100707 |