CN104090256B - The full-automatic debugging system of electronic mutual inductor - Google Patents
The full-automatic debugging system of electronic mutual inductor Download PDFInfo
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- CN104090256B CN104090256B CN201410336501.7A CN201410336501A CN104090256B CN 104090256 B CN104090256 B CN 104090256B CN 201410336501 A CN201410336501 A CN 201410336501A CN 104090256 B CN104090256 B CN 104090256B
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- 239000013307 optical fiber Substances 0.000 claims abstract description 12
- 238000012795 verification Methods 0.000 claims abstract description 12
- 238000012360 testing method Methods 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 238000004088 simulation Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
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Abstract
A kind of full-automatic debugging system of electronic mutual inductor, the input of the input of standard mutual inductor and tested electronic mutual inductor is connected to the output end of standard source simultaneously, the output end of standard mutual inductor is connected to the analog input end of electronic transducer calibration instrument, the output end of tested electronic mutual inductor is connected to the digital input end of combining unit by optical fiber, the digital output end of combining unit is connected to the digital quantity input of electronic transducer calibration instrument by optical fiber, also include control platform, control platform includes a piece of dsp chip and a piece of single-chip microcomputer, dsp chip is connected with single-chip microcomputer；Ethernet interface and USB interface plate, Ethernet interface connection electronic transducer calibration instrument, USB interface plate connection background computer are also associated with dsp chip；RS232 interface is also associated with single-chip microcomputer, RS232 interface connects the control terminal of standard source.The present invention improves the precision and verification efficiency of verification, and substantially reduces the security risk of verification.
Description
Technical field
The present invention relates to power system device calibration technology field, the specifically full-automatic debugging system of electronic mutual inductor.
Background technology
The experimental rig that the precision checking method of electronic mutual inductor uses at present is by standard source, standard mutual inductor, electronics
Formula mutual-inductor tester and related corollary equipment composition.Standard source produces high current（High voltage）, while it is added to tested electronic type
The primary side of transformer and the primary side of standard mutual inductor, electronic transducer calibration instrument gather the simulation output of standard mutual inductor
It is used as tested value as standard value, while by the optical signal output of optical fiber from combining unit collection electronic mutual inductor, by school
Amplitude error and phase error that instrument calculates tested electronic mutual inductor automatically are tested, test data is finally recorded by testing crew,
And judge whether electronic mutual inductor precision is qualified according to the accuracy class of regulation.Asked as follows however, this verification mode is present
Topic：1. controlling standard source to export by the way of hand adjustment, potential safety hazard be present, and output accuracy is not high.2. use people's part work and part study
Take electronic transducer calibration instrument data and with the behindhand type of computer record, exist because the slow reason of manual record is led
Up-flow, pressure rising time is caused to increase, the problem of causing electric cable heating serious.
The content of the invention
In view of the above-mentioned problems, it is an object of the invention to provide a kind of full-automatic debugging system of electronic mutual inductor.
To solve above-mentioned technical problem, the present invention uses following technical scheme：A kind of electronic mutual inductor is automatically adjusted
The input of test system, the input of standard mutual inductor and tested electronic mutual inductor is connected to the output end of standard source simultaneously,
The output end of standard mutual inductor is connected to the analog input end of electronic transducer calibration instrument, is detected the defeated of electronic mutual inductor
Go out the digital input end that end is connected to combining unit by optical fiber, the digital output end of combining unit is connected to electronics by optical fiber
The digital quantity input of formula mutual-inductor tester, in addition to control platform, control platform include a piece of dsp chip and a piece of monolithic
Machine, dsp chip are connected with single-chip microcomputer；Ethernet interface and USB interface plate, Ethernet interface connection are also associated with dsp chip
Electronic transducer calibration instrument, USB interface plate connection background computer；RS232 interface is also associated with single-chip microcomputer, RS232 connects
The control terminal of mouth connection standard source.
When the tested electronic mutual inductor is electronic current mutual inductor, standard source is made up of constant-current source and current lifting device,
The output end of constant-current source is connected to the input of current lifting device, and the output end of current lifting device forms the output end of standard source, constant-current source
Control terminal forms the control terminal of standard source；The standard mutual inductor is standard current transformer, the one of electronic current mutual inductor
The primary side of secondary side and standard current transformer is connected in series.Constant-current source is additionally provided with protection signal output end, and protection signal is defeated
Go out end and single-chip microcomputer is connected to by the first isolating chip；Temperature is provided with cable between current lifting device and electronic current mutual inductor
Sensor is spent, temperature sensor passes sequentially through the second isolating chip and AD conversion chip is connected to single-chip microcomputer.
When the tested electronic mutual inductor is electronic type voltage transformer, standard source is made up of constant pressure source and transformer,
The output end of constant pressure source is connected to the input of transformer, and the output end of transformer forms the output end of standard source, constant pressure source
Control terminal forms the control terminal of standard source；The standard mutual inductor is standard potential transformer, the one of electronic type voltage transformer
The primary side of secondary side and standard potential transformer is connected in parallel.Constant pressure source is additionally provided with protection signal output end, and protection signal is defeated
Go out end and single-chip microcomputer is connected to by the first isolating chip；Temperature is provided with cable between transformer and electronic type voltage transformer
Sensor is spent, temperature sensor passes sequentially through the second isolating chip and AD conversion chip is connected to single-chip microcomputer.
The control platform is additionally provided with man-machine interface, man-machine interface connection dsp chip.
Compared with prior art, the beneficial effects of the invention are as follows：The achievable standard source output of the present invention automatically control and
The real-time monitoring of working condition, and the real time data of electronic transducer calibration instrument can be read automatically, it is automatic using daemon software
Generation verification report, so as to realize the full-automatic verification of electronic mutual inductor, while can also monitor the temperature of cable in real time.This
Invention improves the precision and verification efficiency of verification, and substantially reduces the security risk of verification.
Brief description of the drawings
Fig. 1 control platform internal structure block diagrams.
The full-automatic debugging system structured flowchart of Fig. 2 electronic current mutual inductors.
The full-automatic debugging system structured flowchart of Fig. 3 electronic type voltage transformers.
Embodiment
As shown in Fig. 2 the full-automatic debugging system of electronic current mutual inductor, the primary side and electronics of standard current transformer
The output end of current lifting device, the output of the input connection constant-current source of current lifting device are connected to after the primary side series connection of formula current transformer
End.The output end of standard current transformer is connected to the analog input end of electronic transducer calibration instrument, and electronic current is mutual
The output end of sensor is connected to the digital input end of combining unit by optical fiber, and the digital output end of combining unit is connected by optical fiber
It is connected to the digital quantity input of electronic transducer calibration instrument.It is flat that electronic transducer calibration instrument and constant-current source are also connected with control
Platform.
As shown in figure 3, the full-automatic debugging system of electronic type voltage transformer, the primary side and electronics of standard potential transformer
The output end of transformer, the output of the input connection constant pressure source of transformer are connected to after the primary side parallel connection of formula voltage transformer
End.The output end of standard potential transformer is connected to the analog input end of electronic transducer calibration instrument, and electronic type voltage is mutual
The output end of sensor is connected to the digital input end of combining unit by optical fiber, and the digital output end of combining unit is connected by optical fiber
It is connected to the digital quantity input of electronic transducer calibration instrument.It is flat that electronic transducer calibration instrument and constant pressure source are also connected with control
Platform.
Electronic transducer calibration instrument uses XL806.
As shown in figure 1, control platform includes a piece of dsp chip and a piece of single-chip microcomputer, dsp chip are connected with single-chip microcomputer.DSP
Ethernet interface and USB interface plate, Ethernet interface connection electronic transducer calibration instrument, USB interface are also associated with chip
Plate external connection background computer.Amplitude error is received at electronic transducer calibration instrument by Ethernet interface, phase is missed
The project testing result such as difference, the foundation whether qualified as equipment is judged；It is online with background computer by USB interface plate, beat
Print verification report.
RS232 interface and the first isolating chip, RS232 interface connection constant-current source are also associated with single-chip microcomputer（Constant pressure source）'s
Control terminal, for controlling constant-current source（Constant pressure source）Output, the first isolating chip connection constant-current source（Constant pressure source）Protection signal
Output end.Constant-current source（Constant pressure source）Internal overcurrent（Overvoltage）Protection signal accesses after the first isolating chip light-coupled isolation
To single-chip microcomputer, constant-current source is monitored in real time（Constant pressure source）Working condition, there is overcurrent（Overvoltage）Situation cut off electricity immediately
Source, ensure equipment safety.
The single-chip microcomputer is also associated with AD conversion chip, and AD conversion chip connects TEMP by the second isolating chip
Device.Temperature sensor is arranged on current lifting device（Transformer）With tested electronic current mutual inductor（Electronic type voltage transformer）Between
Test cable on.The real time temperature of test cable is converted to data signal and is sent to single-chip microcomputer by AD conversion chip, if cable
Heating exceedes safety limit, and single-chip microcomputer will automatically cut off constant-current source（Constant pressure source）Output, so as to protect the person and equipment safety.
The control platform is additionally provided with man-machine interface, man-machine interface connection dsp chip.User can be right by the interface
The parameter of control platform is configured, and user can also be upgraded by the interface to control platform firmware.For example, when control
When platform is used for data acquisition, if the communications protocol between control platform and tester or combining unit changes,
User can carry out field upgrade to adapt to this change by the interface to its firmware.
Control platform controls constant-current source（Constant pressure source）High accuracy output, by current lifting device（Transformer）Produce specified once big
Electric current（High voltage）, while it is added to tested electronic current mutual inductor（Electronic type voltage transformer）Primary side and normalized current
Transformer（Standard potential transformer）Primary side, electronic transducer calibration instrument collection standard current transformer（Normal voltage
Transformer）Simulation output gather tested electronic current mutual inductor from combining unit as standard value, while by optical fiber（Electricity
Minor voltage transformer）Optical signal output as tested value, calculate tested electronic type automatically by electronic transducer calibration instrument
Current transformer（Electronic type voltage transformer）Amplitude error and phase error, then control platform by Ethernet interface with
Electronic transducer calibration instrument, which is established, to be connected, the real time data of DSP sampling with high precision electronic transducer calibration instruments, then quickly
Signal transacting is carried out, according to《Electronic mutual inductor field-checking specification》In required precision, be made whether qualified to sentence automatically
It is disconnected, and verification report is provided, complete verifying work.
Claims (2)
1. a kind of full-automatic debugging system of electronic mutual inductor, the input of standard mutual inductor and tested electronic mutual inductor is defeated
Enter end while be connected to the output end of standard source, the output end of standard mutual inductor is connected to the simulation of electronic transducer calibration instrument
Input is measured, the output end of tested electronic mutual inductor is connected to the digital input end of combining unit, combining unit by optical fiber
Digital output end the digital quantity input of electronic transducer calibration instrument is connected to by optical fiber, it is characterised in that also include
Control platform, control platform includes a piece of dsp chip and a piece of single-chip microcomputer, dsp chip are connected with single-chip microcomputer；On dsp chip also
It is connected with Ethernet interface and USB interface plate, Ethernet interface connection electronic transducer calibration instrument, from electronic mutual inductor school
Test reception test result at instrument, the foundation whether qualified as equipment is judged, USB interface plate connection background computer, after utilization
Platform software automatically generates verification report；RS232 interface is also associated with single-chip microcomputer, RS232 interface connects the control terminal of standard source,
Standard source is controlled to produce a high current or high voltage；
The standard source is made up of constant-current source and current lifting device, and the output end of constant-current source is connected to the input of current lifting device, current lifting device
Output end form the output end of standard source, the control terminal of constant-current source forms the control terminal of standard source；The tested electronic type is mutual
Sensor is electronic current mutual inductor, and the standard mutual inductor is standard current transformer, and electronic current mutual inductor is once
The primary side of side and standard current transformer is connected in series；
The constant-current source is additionally provided with protection signal output end, and protection signal output end is connected to monolithic by the first isolating chip
Machine；Temperature sensor is provided with cable between the current lifting device and electronic current mutual inductor, temperature sensor leads to successively
Cross the second isolating chip and AD conversion chip is connected to single-chip microcomputer；
Or the standard source is made up of constant pressure source and transformer, the output end of constant pressure source is connected to the input of transformer, becomes
The output end of depressor forms the output end of standard source, and the control terminal of constant pressure source forms the control terminal of standard source；The tested electronics
Formula transformer is electronic type voltage transformer, and the standard mutual inductor is standard potential transformer, electronic type voltage transformer
The primary side of primary side and standard potential transformer is connected in parallel；
The constant pressure source is additionally provided with protection signal output end, and protection signal output end is connected to monolithic by the first isolating chip
Machine；Temperature sensor is provided with cable between the transformer and electronic type voltage transformer, temperature sensor leads to successively
Cross the second isolating chip and AD conversion chip is connected to single-chip microcomputer.
2. the full-automatic debugging system of a kind of electronic mutual inductor according to claim 1, it is characterised in that the control is flat
Platform is additionally provided with man-machine interface, man-machine interface connection dsp chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410336501.7A CN104090256B (en) | 2014-07-15 | 2014-07-15 | The full-automatic debugging system of electronic mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410336501.7A CN104090256B (en) | 2014-07-15 | 2014-07-15 | The full-automatic debugging system of electronic mutual inductor |
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| CN104090256A CN104090256A (en) | 2014-10-08 |
| CN104090256B true CN104090256B (en) | 2018-03-23 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104678345B (en) * | 2015-03-25 | 2018-02-06 | 国家电网公司 | Electronic mutual inductor based on synchronized sampling holding circuit is traced to the source device |
| CN105182269B (en) * | 2015-09-16 | 2018-04-06 | 国家电网公司 | A kind of voltage transformer tester with temperature measurement function |
| CN109976281A (en) * | 2019-04-11 | 2019-07-05 | 重庆川仪控制***有限公司 | A kind of check system of digital quantity input/output module |
| CN110596629A (en) * | 2019-09-18 | 2019-12-20 | 宿州市泰华仪表有限公司 | Automatic debugging system and automatic debugging method of portable calibrator |
| CN110488216A (en) * | 2019-09-20 | 2019-11-22 | 云南电网有限责任公司电力科学研究院 | A kind of digital output DCVT field calibration system |
| CN113325354B (en) * | 2021-04-23 | 2023-12-26 | 中国电力科学研究院有限公司 | System and method for testing errors of electronic transformer for distribution network |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100439646B1 (en) * | 2001-08-28 | 2004-07-12 | 주식회사프로컴시스템 | Portable Transformer Tester |
| 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 |
| CN201867455U (en) * | 2010-09-29 | 2011-06-15 | 广东电网公司茂名供电局 | Electronic mutual indicator test system |
| CN102109589B (en) * | 2010-12-09 | 2012-12-26 | 广东中钰科技有限公司 | Embedded check meter for electronic mutual inductor |
| CN102073029B (en) * | 2011-02-16 | 2013-06-12 | 安徽省电力公司合肥供电公司 | Electronic mutual inductor test system and test method |
| CN203365669U (en) * | 2013-07-09 | 2013-12-25 | 西安华伟光电技术有限公司 | Running state on-line monitoring device for electronic mutual inductor |
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