CN101493508A - Calibration test apparatus for extra-high voltage direct current transformer - Google Patents
Calibration test apparatus for extra-high voltage direct current transformer Download PDFInfo
- Publication number
- CN101493508A CN101493508A CNA2009100605094A CN200910060509A CN101493508A CN 101493508 A CN101493508 A CN 101493508A CN A2009100605094 A CNA2009100605094 A CN A2009100605094A CN 200910060509 A CN200910060509 A CN 200910060509A CN 101493508 A CN101493508 A CN 101493508A
- Authority
- CN
- China
- Prior art keywords
- current
- direct current
- signal processing
- current transformer
- processing unit
- 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.)
- Granted
Links
Images
Landscapes
- Measurement Of Current Or Voltage (AREA)
Abstract
The invention provides a calibration test device of a super-high direct current transformer, comprising an alternating current/direct current programmable power supply, a calibration sensor and a data processing and controlling device; the calibration sensor comprises two sensors: a zero-flux sensor and a broadband current sensor; the data processing and controlling device comprises a signal processing unit, an error measurement and calculation unit and a system control unit; the test currents generated by the alternating current/direct current programmable power supply are sequentially accessed in the calibration sensor and the direct current transformer to be calibrated; the output signal of the direct current transformer to be calibrated is transmitted to the signal processing unit; the standard measurement result of the calibration sensor is transmitted to the signal processing unit; the signal processing unit is connected with the error measurement and calculation unit; and the system control unit is connected with the alternating current/direct current programmable power supply. The calibration test device of a super-high direct current transformer used as a calibration measurement system can carry out calibration test on the accuracy of the direct current and harmonic wave measured by the direct current sensor and fills up the blank in the field.
Description
Technical field
The present invention relates to a kind of calibrating test device of extra-high voltage direct-current current transformer, belong to calibration, calibrating and detection range power equipment.
Background technology
DC current transformer is the indispensable primary equipment of the normal operation of DC transmission system, but still lacks effective calibration means at present, the field calibration after particularly putting into operation for extra-high voltage DC transmission system provides control and guard signal.In addition, DC current transformer all has functions such as measuring DC current and harmonic current concurrently, to its calibration of carrying out should be comprehensive investigation of multiple measurement performance, and current experiments chamber calibrating test device all can only be calibrated direct current or harmonic wave separately, can not reflect the true operating condition of mutual inductor in transmission line of electricity.
Summary of the invention
The invention provides a kind of calibrating test device of extra-high voltage direct-current current transformer, it can carry out calibration test to the accuracy of DC current transformer measurement direct current and harmonic wave simultaneously as a calibration measurement system, fills up the blank in this field.
Technical scheme of the present invention is: a kind of calibrating test device of extra-high voltage direct-current current transformer, it is characterized in that: comprise alternating current-direct current programmable power supply, calibrating sensors and data processing and control device, calibrating sensors comprises zero magnetic flux transducer and two sensing heads of wideband current sensor, and data processing and control device comprise signal processing unit, error measure calculating unit and system control unit; The test current that the alternating current-direct current programmable power supply produces inserts calibrating sensors successively and is flowed current transformer by alignment; Output signal by alignment stream current transformer reaches signal processing unit, and the canonical measure result in the calibrating sensors reaches signal processing unit, and signal processing unit is connected with computing unit with error measure, and system control unit is connected with the alternating current-direct current programmable power supply.
The invention has the beneficial effects as follows: the present invention provides a kind of effective method for the calibration of DC current transformer, can investigate the many-sided measurement performance of DC current transformer comprehensively, for the stable operation of DC transmission system provides safeguard, for DC current transformer fault diagnosis and maintenance provide foundation, fill up the blank in this field.
Description of drawings
Fig. 1 is an embodiment of the invention principle of work block diagram.
Embodiment
Be described further below in conjunction with the calibrating test device of drawings and Examples extra-high voltage direct-current current transformer of the present invention.
Mark among Fig. 1: 1-alternating current-direct current programmable power supply, 2-calibrating sensors, 3-zero magnetic flux transducer, 4-wideband current sensor, 5-are flowed current transformer, 6-data processing and control device, 7-signal processing unit, 8-error measure calculating unit, 9-system control unit by alignment.
As shown in Figure 1, the embodiment of the invention comprises alternating current-direct current programmable power supply 1, calibrating sensors 2 and data processing and control device 6, calibrating sensors 2 comprises zero magnetic flux transducer 3 and 4 two sensing heads of wideband current sensor, and data processing and control device 6 comprise signal processing unit 7, error measure calculating unit 8 and system control unit 9; The test current that alternating current-direct current programmable power supply 1 produces inserts calibrating sensors 2 successively and is flowed current transformer 5 by alignment; Output signal by alignment stream current transformer 5 reaches signal processing unit 7, canonical measure result in the calibrating sensors 2 reaches signal processing unit 7, signal processing unit 7 is connected with computing unit 8 with error measure, and system control unit 9 is connected with alternating current-direct current programmable power supply 1 provides control signal.
Alternating current-direct current programmable power supply 1 wherein can produce the DC current with value such as extra-high voltage direct-current current transformer rated current, can produce the harmonic current with corresponding amplitude of direct current instrument transformer measurement requirement and frequency simultaneously; Calibrating sensors 2 can be calibrated the accuracy of DC current transformer measurement direct current and harmonic current respectively, and the class of accuracy of zero magnetic flux transducer 3 wherein reaches 0.01 grade, satisfies the requirement of measurement verification; Data processing and control device 6 adopt the error of measurement method to measure by the error of alignment stream current transformer 5, and there is several data to handle and the signal transformation ability, can satisfy the different output signal type of DC current transformer (as photo-electric, zero magnetic flux type) of various ways.
During concrete enforcement, alternating current-direct current programmable power supply 1 produces calibration required direct current and harmonic current simultaneously, and the amplitude frequency of the size of DC current and harmonic current is by system control unit 9 controls; Test current inserts calibrating sensors 2 successively and is flowed current transformer 5 by alignment by the test bus.May be various ways (as photo-electric, zero magnetic flux type) by alignment stream current transformer 5, its output signal reaches signal processing unit 7.Calibrating sensors 2 comprises two sensing heads, flip-flop in the wherein zero magnetic flux transducer 3 experiment with measuring electric currents, AC harmonic composition in the wideband current sensor 4 experiment with measuring electric currents, the canonical measure result reaches signal processing unit 7 and carries out data processing and signal transformation, is converted to and the form that is complementary by alignment stream current transformer 5 output signals.Standard signal with drawn by the accuracy of measurement result of school mutual inductor by the error of measurement method in error measure and computing unit 8 by the school signal.
Claims (1)
1, a kind of calibrating test device of extra-high voltage direct-current current transformer, it is characterized in that: comprise alternating current-direct current programmable power supply, calibrating sensors and data processing and control device, calibrating sensors comprises zero magnetic flux transducer and two sensing heads of wideband current sensor, and data processing and control device comprise signal processing unit, error measure calculating unit and system control unit; The test current that the alternating current-direct current programmable power supply produces inserts calibrating sensors successively and is flowed current transformer by alignment; Output signal by alignment stream current transformer reaches signal processing unit, and the canonical measure result in the calibrating sensors reaches signal processing unit, and signal processing unit is connected with computing unit with error measure, and system control unit is connected with the alternating current-direct current programmable power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100605094A CN101493508B (en) | 2009-01-13 | 2009-01-13 | Calibration test apparatus for extra-high voltage direct current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100605094A CN101493508B (en) | 2009-01-13 | 2009-01-13 | Calibration test apparatus for extra-high voltage direct current transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101493508A true CN101493508A (en) | 2009-07-29 |
| CN101493508B CN101493508B (en) | 2012-03-14 |
Family
ID=40924200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100605094A Active CN101493508B (en) | 2009-01-13 | 2009-01-13 | Calibration test apparatus for extra-high voltage direct current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101493508B (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102253353A (en) * | 2011-04-19 | 2011-11-23 | 河北省电力研究院 | Method and device for automatically calibrating micro-ammeters |
| CN102375135A (en) * | 2010-08-11 | 2012-03-14 | 苏州华电电气股份有限公司 | Field calibration system of current transformer for metering |
| CN102540035A (en) * | 2010-12-28 | 2012-07-04 | 苏州华电电气股份有限公司 | Comprehensive direct-current high-voltage test device for internal water cooling generator |
| CN103180749A (en) * | 2010-09-23 | 2013-06-26 | 罗伯特·博世有限公司 | Method for checking proper method of operation of current sensor |
| CN103616655A (en) * | 2013-12-10 | 2014-03-05 | 河池市计量测试研究所 | Method and equipment for calibrating medical diagnostic X-ray radiation source tube current measuring instrument |
| CN104101856A (en) * | 2014-07-15 | 2014-10-15 | 国家电网公司 | Method and device for detecting error of electronic measurement unit of zero-flux DC (Direct Current) current transformer |
| CN104603631A (en) * | 2012-09-07 | 2015-05-06 | 大陆-特韦斯贸易合伙股份公司及两合公司 | Method and device for checking the plausibility of a current sensor measurement result |
| CN104820199A (en) * | 2015-04-13 | 2015-08-05 | 广东电网有限责任公司电力科学研究院 | DC large-current measuring device ripple responsiveness test system and method thereof |
| CN105629192A (en) * | 2016-03-14 | 2016-06-01 | 国家电网公司 | Zero-flux current transformer calibration device and method |
| CN106707015A (en) * | 2016-11-09 | 2017-05-24 | 广东电网有限责任公司电力科学研究院 | High-performance self-calibrated photoelectric combined type current transformer and self-calibration method thereof |
| CN106772199A (en) * | 2017-01-05 | 2017-05-31 | 云南电网有限责任公司电力科学研究院 | A kind of DC current transformer frequency response characteristic check system and method |
| CN107422212A (en) * | 2017-08-23 | 2017-12-01 | 国网电力科学研究院武汉南瑞有限责任公司 | A kind of electronic direct current transformer transient characterisitics experimental rig and control method |
| CN108139432A (en) * | 2015-06-29 | 2018-06-08 | Abb瑞士股份有限公司 | The method of saturation effect and its intelligent electronic device in correcting current mutual inductor |
| CN108918943A (en) * | 2018-04-16 | 2018-11-30 | 北京四方继保自动化股份有限公司 | A kind of D.C. high voltage transmission optics direct current measuring devices |
| CN110967660A (en) * | 2019-11-08 | 2020-04-07 | 中国电力科学研究院有限公司 | Method and system for detecting current transformer |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201145737Y (en) * | 2008-01-04 | 2008-11-05 | 宁波三维电测设备有限公司 | Apparatus for measuring error of current transformer based on parameter measurement |
| CN101290345B (en) * | 2008-06-06 | 2010-10-13 | 北京浩霆光电技术有限责任公司 | Multifunctional mutual-inductor tester |
| CN201373912Y (en) * | 2009-01-13 | 2009-12-30 | 国网电力科学研究院 | Calibration testing device for extra high-voltage DC current transformer |
-
2009
- 2009-01-13 CN CN2009100605094A patent/CN101493508B/en active Active
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102375135A (en) * | 2010-08-11 | 2012-03-14 | 苏州华电电气股份有限公司 | Field calibration system of current transformer for metering |
| CN103180749A (en) * | 2010-09-23 | 2013-06-26 | 罗伯特·博世有限公司 | Method for checking proper method of operation of current sensor |
| CN103180749B (en) * | 2010-09-23 | 2016-04-06 | 罗伯特·博世有限公司 | A kind of for checking the method for the normal operation of current sensor |
| CN102540035A (en) * | 2010-12-28 | 2012-07-04 | 苏州华电电气股份有限公司 | Comprehensive direct-current high-voltage test device for internal water cooling generator |
| CN102540035B (en) * | 2010-12-28 | 2013-07-31 | 苏州华电电气股份有限公司 | Comprehensive direct-current high-voltage test device for internal water cooling generator |
| CN102253353A (en) * | 2011-04-19 | 2011-11-23 | 河北省电力研究院 | Method and device for automatically calibrating micro-ammeters |
| US9651586B2 (en) | 2012-09-07 | 2017-05-16 | Continental Teves Ag & Co. Ohg | Method and circuit for checking the plausibility of a current sensor measurement result |
| CN104603631A (en) * | 2012-09-07 | 2015-05-06 | 大陆-特韦斯贸易合伙股份公司及两合公司 | Method and device for checking the plausibility of a current sensor measurement result |
| CN103616655A (en) * | 2013-12-10 | 2014-03-05 | 河池市计量测试研究所 | Method and equipment for calibrating medical diagnostic X-ray radiation source tube current measuring instrument |
| CN104101856A (en) * | 2014-07-15 | 2014-10-15 | 国家电网公司 | Method and device for detecting error of electronic measurement unit of zero-flux DC (Direct Current) current transformer |
| CN104820199A (en) * | 2015-04-13 | 2015-08-05 | 广东电网有限责任公司电力科学研究院 | DC large-current measuring device ripple responsiveness test system and method thereof |
| CN108139432A (en) * | 2015-06-29 | 2018-06-08 | Abb瑞士股份有限公司 | The method of saturation effect and its intelligent electronic device in correcting current mutual inductor |
| CN108139432B (en) * | 2015-06-29 | 2020-10-30 | Abb瑞士股份有限公司 | Method for correcting saturation effect in current transformer and intelligent electronic equipment thereof |
| CN105629192A (en) * | 2016-03-14 | 2016-06-01 | 国家电网公司 | Zero-flux current transformer calibration device and method |
| CN106707015A (en) * | 2016-11-09 | 2017-05-24 | 广东电网有限责任公司电力科学研究院 | High-performance self-calibrated photoelectric combined type current transformer and self-calibration method thereof |
| CN106772199A (en) * | 2017-01-05 | 2017-05-31 | 云南电网有限责任公司电力科学研究院 | A kind of DC current transformer frequency response characteristic check system and method |
| CN107422212A (en) * | 2017-08-23 | 2017-12-01 | 国网电力科学研究院武汉南瑞有限责任公司 | A kind of electronic direct current transformer transient characterisitics experimental rig and control method |
| CN107422212B (en) * | 2017-08-23 | 2023-08-08 | 国网电力科学研究院武汉南瑞有限责任公司 | Transient characteristic test device and control method for electronic direct current transformer |
| CN108918943A (en) * | 2018-04-16 | 2018-11-30 | 北京四方继保自动化股份有限公司 | A kind of D.C. high voltage transmission optics direct current measuring devices |
| CN110967660A (en) * | 2019-11-08 | 2020-04-07 | 中国电力科学研究院有限公司 | Method and system for detecting current transformer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101493508B (en) | 2012-03-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101493508B (en) | Calibration test apparatus for extra-high voltage direct current transformer | |
| CN101403777B (en) | Resistive current tester for great current zinc oxide lightning arrester | |
| CN201444193U (en) | Comprehensive error detection device used for digital electric energy measuring device | |
| Cataliotti et al. | Current transformers effects on the measurement of harmonic active power in LV and MV networks | |
| Cataliotti et al. | A novel approach to current transformer characterization in the presence of harmonic distortion | |
| CN103207379B (en) | Method and device for measuring direct current magnetic bias error characteristics of current transformer | |
| CN106597351B (en) | A kind of implementation method of pair of electric energy meter checking device on-line real time monitoring | |
| CN201373912Y (en) | Calibration testing device for extra high-voltage DC current transformer | |
| CN208818818U (en) | A kind of low-power consumption program control type current mutual inductor field detecting device | |
| CN201514473U (en) | Error positioning device of high-voltage electric power metering device | |
| CN108761375A (en) | A kind of low-power consumption program control type current mutual inductor field detecting device | |
| CN103018703A (en) | Current/voltage conversion traceability method for precision alternating current measurement | |
| CN207318694U (en) | A kind of non-contact type current instrument on-line calibration device | |
| CN104931914A (en) | Analog field high voltage energy meter calibration system | |
| CN205826736U (en) | A kind of high accuracy single-turn cored structure formula electric current Online Transaction Processing | |
| CN103913715B (en) | High-voltage measuring box error testing system and error testing method | |
| CN102385013B (en) | Method and device for detecting harmonic characteristic of electronic current transformer | |
| CN103278698B (en) | A kind of measurement mechanism of iron loss of oriented silicon steel by utilizing value and method | |
| CN103023497B (en) | The digital signal of selsyn module and analog signal conversion accuracy method of testing | |
| CN203025253U (en) | Capacitive equipment dielectric loss energized testing device | |
| CN102707118B (en) | Baric flow mutual inductor and measuring system thereof | |
| CN206038784U (en) | Live line measurement zinc oxide arrester's wireless tester | |
| CN204314390U (en) | A kind of silicon steel iron loss tester | |
| Cataliotti et al. | Characterization of current transformers in the presence of harmonic distortion | |
| CN104133118A (en) | Calibration method for measurement of magnetic core loss |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |