CN201156084Y - Checking apparatus of electronic mutual inductor - Google Patents
Checking apparatus of electronic mutual inductor Download PDFInfo
- Publication number
- CN201156084Y CN201156084Y CNU2007203113416U CN200720311341U CN201156084Y CN 201156084 Y CN201156084 Y CN 201156084Y CN U2007203113416 U CNU2007203113416 U CN U2007203113416U CN 200720311341 U CN200720311341 U CN 200720311341U CN 201156084 Y CN201156084 Y CN 201156084Y
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- CN
- China
- Prior art keywords
- mutual inductor
- signal
- electronic mutual
- capture card
- card
- 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 - Lifetime
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- Measurement Of Resistance Or Impedance (AREA)
Abstract
The utility model discloses a checking device, which has the advantages of simple structure, small volume and low production cost and is used for checking the error of an electronic mutual inductor. The checking device comprises a signal source used for generating a standard signal, an acquisition card and a personal computer. The signal source is connected with a resistance in parallel, both ends of which are respectively connected with the analog input port AI and the grounding terminal GND of the acquisition card. The synchronized signal is connected with the digital input port PFI of the acquisition card. The output port of the acquisition card is connected with one input port of the checking module in the PC through a USB port. The other input port of the checking module is connected with the tested signal of the electronic mutual inductor through a network card. The output port of the checking module is connected with the display of the PC.
Description
Technical field
The utility model relates to a kind of calibration equipment, particularly a kind of calibration equipment of electronic mutual inductor.
Background technology
Popularization along with digital transformer substation; the appearance of electronic mutual inductor has fundamentally changed the structure and the output signal mode of mutual inductor; traditional analog quantity is delivered to directly that secondary is measured and protected location changes in that mutual inductor is inner and directly changing, the alternating current-direct current high-voltage large current is offered related devices such as protection, measurement with digital signal form by optical fiber.After the mutual inductor digitizing, reduced the integrated application cost of protection measuring system.Thereby electronic mutual inductor needs to guarantee precision through error checking before coming into operation.Traditional transducer check equipment uses a large amount of electronic devices and components, and volume is big, cost is high, maintenance is complicated, upgrade the cost height and can only receive the analog quantity input, can't carry out accurate verification for the digital signal of electronic mutual inductor.
Summary of the invention
The purpose of this utility model provide a kind of simple in structure, volume is little, low cost of manufacture, be applicable to the calibration equipment of electronic mutual inductor error-tested.
For reaching above purpose, the utility model takes following technical scheme to be achieved:
A kind of calibration equipment of electronic mutual inductor, it is characterized in that, comprise that one is used to produce the signal source of standard signal, a capture card and a PC, described signal source is parallel with a resistance, these resistance two ends connect the analog quantity input end AI and the earth terminal GND of capture card, and the digital quantity input end PFI of capture card connects synchronizing signal.The output terminal of capture card is by an input end of the verification module in the USB interface connection PC, and another input end of this verification module connects the measured signal of electronic mutual inductor by a network interface card; The output of verification module connects the display screen of PC.
In the such scheme, described measured signal by network interface card connection electronic mutual inductor includes multichannel.Described signal source is a standard mutual inductor, and described capture card is an analog to digital conversion circuit.
The utility model has the advantages that, the measured number signal is sent to PC with the network interface card transmission form, standard signal source calculates automatically and contrasts and intuitively demonstration on display screen by networking with PC by the measurement result and the measured signal of capture card digitized sampling signal, and real-time monitoring and control is arranged simultaneously.By network interface card, can realize the measurement and the verification of multichannel measured number signal.
Description of drawings
Fig. 1 is a circuit structure block diagram of the present utility model.
Embodiment
Below in conjunction with drawings and Examples the utility model is described in further detail.
As shown in Figure 1, a kind of calibration equipment of electronic mutual inductor, comprise the signal source 1 that produces standard signal, this signal source 1 is a standard current transformer, parallel resistance 2 converts the current signal of signal source 1 to voltage signal, give a capture card 3 of forming by analog to digital conversion circuit, capture card 3 receives the standard signal that begins sampled signal source 1 after the synchronizing signal 7 of electronic mutual inductor, and digitized standard for manual sampling signal is sent to verification module 9 in the PC 5 by usb mode, the module 9 of verification simultaneously receives the digitizing measured signal 6 that electronic mutual inductor transmits by network interface card 8, with two groups of data calculate with comparative analysis after obtain check results, on display screen 4, show effective value, precision, differ, waveform.Assay directly provides with report form, and can print current waveform at any time.The synchronizing signal per second sends once, carves contrast at the same time to guarantee measured signal and standard signal.The utility model also can allow to monitor simultaneously 12 tunnel measured signal passages, and the color of the port number of configuration monitoring in real time and every road waveform shows the passage name and the effective value of passage in the monitoring state.The utility model can also dispose inspection parameters such as specified range, passage, calculates tested passage coefficient and standard source coefficient automatically.
Claims (4)
1. the calibration equipment of an electronic mutual inductor, it is characterized in that, comprise that one is used to produce the signal source of standard signal, a capture card and a PC, described signal source is parallel with a resistance, these resistance two ends connect the analog quantity input end AI and the earth terminal GND of capture card, and the digital quantity input end PFI of capture card connects synchronizing signal; The output terminal of capture card is by an input end of the verification module in the USB interface connection PC, and another input end of this verification module connects the measured signal of electronic mutual inductor by a network interface card; The output of verification module connects the display screen of PC.
2. the calibration equipment of electronic mutual inductor as claimed in claim 1 is characterized in that, described measured signal by network interface card connection electronic mutual inductor includes multichannel.
3. the calibration equipment of electronic mutual inductor as claimed in claim 1 is characterized in that, described signal source is a standard mutual inductor.
4. the calibration equipment of electronic mutual inductor as claimed in claim 1 is characterized in that, described capture card is an analog to digital conversion circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203113416U CN201156084Y (en) | 2007-12-21 | 2007-12-21 | Checking apparatus of electronic mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203113416U CN201156084Y (en) | 2007-12-21 | 2007-12-21 | Checking apparatus of electronic mutual inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201156084Y true CN201156084Y (en) | 2008-11-26 |
Family
ID=40103865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007203113416U Expired - Lifetime CN201156084Y (en) | 2007-12-21 | 2007-12-21 | Checking apparatus of electronic mutual inductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201156084Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101819265A (en) * | 2010-05-21 | 2010-09-01 | 重庆电力科学试验研究院 | Mutual inductor calibration instrument |
| 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 |
| CN103235279A (en) * | 2013-03-28 | 2013-08-07 | 国家电网公司 | Electronic transformer output checking device |
| CN105467348A (en) * | 2015-12-22 | 2016-04-06 | 云南电网有限责任公司电力科学研究院 | Data acquisition system, virtual verification system and method for fiber current transformer |
| CN106199249A (en) * | 2016-06-28 | 2016-12-07 | 积成电子股份有限公司 | A kind of automatic closed loop test system towards intelligent substation and method of testing |
-
2007
- 2007-12-21 CN CNU2007203113416U patent/CN201156084Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101819265A (en) * | 2010-05-21 | 2010-09-01 | 重庆电力科学试验研究院 | Mutual inductor calibration instrument |
| 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 |
| 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 |
| CN105467348A (en) * | 2015-12-22 | 2016-04-06 | 云南电网有限责任公司电力科学研究院 | Data acquisition system, virtual verification system and method for fiber current transformer |
| CN105467348B (en) * | 2015-12-22 | 2018-04-17 | 云南电网有限责任公司电力科学研究院 | A kind of data acquisition of optical fiber current mutual inductor and virtual check system and method |
| CN106199249A (en) * | 2016-06-28 | 2016-12-07 | 积成电子股份有限公司 | A kind of automatic closed loop test system towards intelligent substation and method of testing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Xi'an XD Automated Control System Co., Ltd. Assignor: China XD Electronic Corporation Contract record no.: 2011610000095 Denomination of utility model: Checking apparatus of electronic mutual inductor Granted publication date: 20081126 License type: Exclusive License Record date: 20110712 |
|
| CX01 | Expiry of patent term |
Granted publication date: 20081126 |
|
| CX01 | Expiry of patent term |