CN201757779U - Electronic transformer calibrator - Google Patents

Electronic transformer calibrator Download PDF

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Publication number
CN201757779U
CN201757779U CN2010202138846U CN201020213884U CN201757779U CN 201757779 U CN201757779 U CN 201757779U CN 2010202138846 U CN2010202138846 U CN 2010202138846U CN 201020213884 U CN201020213884 U CN 201020213884U CN 201757779 U CN201757779 U CN 201757779U
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CN
China
Prior art keywords
main control
module
control module
signal
standard
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2010202138846U
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Chinese (zh)
Inventor
曾春山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Clou Electronics Co Ltd
Original Assignee
Shenzhen Clou Electronics Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Priority to CN2010202138846U priority Critical patent/CN201757779U/en
Application granted granted Critical
Publication of CN201757779U publication Critical patent/CN201757779U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses an electronic transformer calibrator, which comprises a main control module and a standard signal sampling module. The standard signal sampling module is connected to the main control module. A digital signal network interface is arranged on the main control module. The digital signal network interface conforms to IEC61850-9-1, IEC61850 and IEC1588 standards. The calibrator of the utility model can realize calibration of the electronic transformer for outputting the digital signals.

Description

Electronic transducer calibration instrument
Technical field
The utility model relates to the tester that electronic mutual inductor is carried out verification.
Background technology
Mutual-inductor tester is a kind of multi-functional and biparametric AC measuring instrument, be mainly used to examine and determine the fundamental error of all kinds and various other electric power mutual-inductor of level and auxiliary device thereof, and can carry out multi-functional performance test to relevant electrical metering equipment, so mutual-inductor tester is one of indispensable important support equipment of development electric utility.Traditional mutual-inductor tester mainly is designed to direct comparison expression principle, is about to the secondary voltage or the electric current of standard mutual inductor and tested mutual inductor, sends into mutual-inductor tester respectively, records both ratio and phase differential by metering circuit, and shows by scale.And for present mutual-inductor tester, the input interface of mutual-inductor tester all is an analog interface.Along with constantly weeding out the old and bring forth the new of Power Electronic Technique, the maturation gradually of electronic mutual inductor technology, electronic mutual inductor will replace traditional mutual inductor.Have only the mutual-inductor tester of analog interface the electronic mutual inductor of digital quantity output to be seemed powerless, therefore, study a kind of tester that can accept digital signal and necessitate.
The utility model content
The purpose of this utility model is for a kind of electronic transducer calibration instrument is provided, and tester of the present utility model can be realized the electric mutual inductor of digital signal output is carried out verification.
For achieving the above object, electronic transducer calibration instrument comprises main control module and standard signal sampling module, and described standard signal sampling module is connected on the main control module; Described main control module is provided with the digital signal network interface, and described digital signal network interface meets IEC61850-9-1, IEC61850 and IEC1588 standard.
Owing to be provided with the digital signal network interface, the digital signal network interface meets IEC61850-9-1, IEC61850 and IEC1588 standard, therefore, tester can directly be accepted the input of digital signal, the clock synchronization accuracy height, tester not only can carry out verification to electronic mutual inductor, and the precision height of verification.
As specializing, described main control module is a main control CPU.
As improvement, be connected with display screen on the described main control CPU.The display screen handled easily is set is observing the structure of check at any time, and directly perceived.
As improvement, be connected with keyboard on the described main control CPU.Keyboard is set is convenient to import data.
As specializing, described standard signal sampling module comprises sampling amplifier, range handover module, A/D converter and optical coupling isolator, described sampling amplifier passes the signal on the A/D converter by the range handover module, and A/D converter passes the signal on the main control module by optical coupling isolator.Described sampling amplifier and range handover module can improve the measuring accuracy of standard signal; A/D converter is changed signal; Optical coupling isolator plays the effect of protection tester.
Description of drawings
Fig. 1 is a structure of block diagram of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is further elaborated.
As shown in Figure 1, electronic transducer calibration instrument comprises main control module and standard signal sampling module; The main control module is a main control CPU 6; The standard signal sampling module comprises sampling amplifier 2, range handover module 3, A/D converter 4 and optical coupling isolator 5, sampling amplifier 2 passes the signal on the A/D converter 4 by range handover module 3, A/D converter 4 passes the signal on the main control module CPU6 by optical coupling isolator, sampling amplifier 2 is used for acceptance criteria signal 1, standard signal 1 is sent by the mark mutual inductor, and is simulating signal; Described main control module CPU is provided with digital signal network interface 7, LCD display 8 and keyboard 9, and the digital signal network interface meets IEC61850-9-1, IEC61850 and IEC1588 standard.Digital signal network interface 7 is connected with tested electronic mutual inductor 10, is used to receive the digital signal of tested electronic mutual inductor 10.
Detection method of the present utility model is: the digital signal in the electronic mutual inductor is input to signal in the main control CPU by the digital signal network interface, simulating signal in the standard mutual inductor is imported signal in the main control CPU into by sampling amplifier, range handover module, A/D converter and optical coupling isolator successively, then, the signal of two-way compares in main control CPU, then, by LCD display to reach the purpose of detection.Owing to be provided with the digital signal network interface, the digital signal network interface meets IEC61850-9-1, IEC61850 and IEC1588 standard, therefore, tester can directly be accepted the input of digital signal, the clock synchronization accuracy height, tester not only can carry out verification to electronic mutual inductor, and the precision height of verification.

Claims (6)

1. electronic transducer calibration instrument comprises main control module and standard signal sampling module, and described standard signal sampling module is connected on the main control module; It is characterized in that: described main control module is provided with the digital signal network interface, and described digital signal network interface meets IEC61850-9-1, IEC61850 and IEC1588 standard.
2. electronic transducer calibration instrument according to claim 1 is characterized in that: described main control module is a main control CPU.
3. electronic transducer calibration instrument according to claim 2 is characterized in that: be connected with display screen on the described main control CPU.
5. according to claim 2 or 3 described electronic transducer calibration instruments, it is characterized in that: be connected with keyboard on the described main control CPU.
6. electronic transducer calibration instrument according to claim 1, it is characterized in that: described standard signal sampling module comprises sampling amplifier, range handover module, A/D converter and optical coupling isolator, described sampling amplifier passes the signal on the A/D converter by the range handover module, and A/D converter passes the signal on the main control module by optical coupling isolator.
CN2010202138846U 2010-05-28 2010-05-28 Electronic transformer calibrator Expired - Fee Related CN201757779U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010202138846U CN201757779U (en) 2010-05-28 2010-05-28 Electronic transformer calibrator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010202138846U CN201757779U (en) 2010-05-28 2010-05-28 Electronic transformer calibrator

Publications (1)

Publication Number Publication Date
CN201757779U true CN201757779U (en) 2011-03-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010202138846U Expired - Fee Related CN201757779U (en) 2010-05-28 2010-05-28 Electronic transformer calibrator

Country Status (1)

Country Link
CN (1) CN201757779U (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102495390A (en) * 2011-12-02 2012-06-13 河南省电力公司南阳供电公司 Field calibrator for electronic transformer
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
CN103235279A (en) * 2013-03-28 2013-08-07 国家电网公司 Electronic transformer output checking device
CN103399288A (en) * 2013-08-15 2013-11-20 国家电网公司 Electronic transformer detection method and scope meter
CN106872026A (en) * 2017-03-29 2017-06-20 中国计量科学研究院 Adjustable faint light generating apparatus
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

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102495390A (en) * 2011-12-02 2012-06-13 河南省电力公司南阳供电公司 Field calibrator for electronic transformer
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
CN103235279A (en) * 2013-03-28 2013-08-07 国家电网公司 Electronic transformer output checking device
CN103235279B (en) * 2013-03-28 2016-03-23 国家电网公司 A kind of electric mutual inductor output verification device
CN103399288A (en) * 2013-08-15 2013-11-20 国家电网公司 Electronic transformer detection method and scope meter
CN103399288B (en) * 2013-08-15 2016-01-13 国家电网公司 Electronic mutual inductor detection method and Oscillograph
CN106872026A (en) * 2017-03-29 2017-06-20 中国计量科学研究院 Adjustable faint light generating apparatus
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

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GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110309

Termination date: 20130528