CN205374717U - Fiber current sensor's data acquisition and virtual calibration system - Google Patents
Fiber current sensor's data acquisition and virtual calibration system Download PDFInfo
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- CN205374717U CN205374717U CN201521073774.3U CN201521073774U CN205374717U CN 205374717 U CN205374717 U CN 205374717U CN 201521073774 U CN201521073774 U CN 201521073774U CN 205374717 U CN205374717 U CN 205374717U
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Abstract
The utility model provides a fiber current sensor data acquisition system, include by check -up fiber current sensor, data acquisition device and industrial computer. The data acquisition device includes data acquisition card, adjustable current source module and gathers the preceding processing module of signal, is connected by check -up fiber current sensor input and adjustable current source module electricity, and the output is connected with the preceding processing module electricity of collection signal, and processing module and data acquisition card are electric before the collection signal is connected. The industrial computer is including gathering that signal trigger module, capture card set up the module and by check -up fiber current sensor's simulation mutual -inductor, gathers signal trigger module and data collection card and is connected by check -up fiber current sensor's simulation mutual -inductor is electric. Furthermore, the utility model provides a virtual calibration system who includes above -mentioned data acquisition system's fiber current sensor.
Description
Technical field
This utility model relates to electronic current mutual inductor technical field, particularly relates to data acquisition and the check system of a kind of optical fiber current mutual inductor.
Background technology
Under substation architecture system; electronic current mutual inductor belongs to process layer devices; it is acting as the interconnection between primary equipment and secondary device and the mutual role of information, especially its communication interface of equipment is the mutual important node of whole substation information with the metering of secondary, protection and control etc..Its operation principle is by bigger primary current, is converted to less secondary current.Wherein, light wire type current sensor is the one of electronic type fibre-optic current device.
At present, what the verification of electronic current mutual inductor adopted is error of measurement method, and power requirement is higher, if not being provided that sufficiently stable power supply during on-the-spot test, power-supply fluctuation can affect the accuracy of measurement.So-called error of measurement method is the difference between measuring basis and verified equipment.The output of electronic current mutual inductor is divided into a series of output level, and the analogue signal of output is that weak electric signal, driving force are poor, and traditional harvester is difficult to collect.Important content during verification electronic current mutual inductor is the synchronized sampling of benchmark transformer and verified transformer output data.But, current capture card all can not realize strict synchronization and trigger sampling, the problem that there is sampling time delay.If the sampling delay time error of capture card is not corrected, the error of check results can be caused.
And, for the specificity analysis project of different electronic current mutual inductors, it is necessary to build different test platforms respectively and realize, but it being limited to the complexity and difficulties operated, some specificity analysis has been difficult to.
In sum, how to realize data acquisition accurately and to build a set of general verification platform be crucial.
Utility model content
This utility model embodiment provides the data acquisition of a kind of optical fiber current mutual inductor and virtual check system, to solve verification error of the prior art, for electronic mutual inductor at electric energy metrical, quality monitoring, harmonic wave control, the application of the aspects such as failure wave-recording provides strong testing and verification.
In order to solve above-mentioned technical problem, this utility model embodiment discloses following technical scheme:
The data collecting system of a kind of optical fiber current mutual inductor, including verified optical fiber current mutual inductor, data acquisition unit and industrial computer；Described data acquisition unit includes data collecting card, adjustable current source module and gathers signal pre-processing module；Described verified optical fiber current mutual inductor input electrically connects with adjustable current source module, and outfan electrically connects with gathering signal pre-processing module；Described collection signal pre-processing module electrically connects with data collecting card；
Described industrial computer includes gathering signal trigger module, capture card and arranges the simulation transformer of module and verified optical fiber current mutual inductor, and described collection signal trigger module electrically connects with the simulation transformer of described data collecting card and verified optical fiber current mutual inductor.
Preferably, in the data collecting system of above-mentioned optical fiber current mutual inductor, the output electric current of adjustable current source module is 5%, 20%, 100% and the 120% of optical fiber current mutual inductor primary side rated value, and frequency is 50Hz.
Preferably, in the data collecting system of above-mentioned optical fiber current mutual inductor, described capture card arranges module and includes memory length handover module, AD acquisition mode handover module, triggering mode selection module, trigger source selection module, and burst types selects module, triggering set direction module, clock source, clock output, triggering level to arrange module.
In addition, this utility model additionally provides the virtual check system of a kind of optical fiber current mutual inductor, including data collecting system and the collection signal analysis module of any of the above-described described optical fiber current mutual inductor, described collection signal analysis module electrically connects with the simulation transformer of described data collecting card and verified optical fiber current mutual inductor.
Preferably, in the virtual check system of above-mentioned optical fiber current mutual inductor, also include being arranged on conditioning module after described data collecting card and the collection signal that gathers between signal analysis module.
From above technical scheme, this utility model that this utility model provides provides the virtual check system that a kind of optical fiber current mutual inductor data collecting system and based on virtual instrument technique is enclosed within this system.This virtual check system of set utilizes virtual instrument namely to simulate transformer and completes the full simulation process of current output signal collection, signal condition, signal detection, the correlation Analysis of optical fiber current mutual inductor, transient characterisitics, steady-state characteristic is carried out after this virtual process.The collection of convenient and reliable efficient complete paired data, signal detection can processing and the work such as specificity analysis, improve the measuring technology of electronic current mutual inductor, the safe and stable operation for electronic current mutual inductor provides technical guarantee.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, for those of ordinary skills, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
The structural representation of the data collecting system of a kind of optical fiber current mutual inductor that Fig. 1 provides for this utility model embodiment.
Wherein: 1-adjustable current source module；The verified optical fiber current mutual inductor of 2-；3-gathers signal pre-processing module, 4-data collecting card, and 5-simulates transformer, and 6-gathers signal trigger module, and 7-capture card arranges module.
Detailed description of the invention
In order to make those skilled in the art be more fully understood that the technical scheme in this utility model, below in conjunction with the accompanying drawing in this utility model embodiment, technical scheme in this utility model embodiment is clearly and completely described, obviously, described embodiment is only a part of embodiment of this utility model, rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, all should belong to the scope of this utility model protection.
Structural representation referring to the data collecting system that Fig. 1, this figure are a kind of fibre optic current sensor that this utility model embodiment provides.As it can be seen, this data collecting system, including verified optical fiber current mutual inductor 2, data acquisition unit and industrial computer；Described data acquisition unit includes data collecting card 4, adjustable current source module 1 and gathers signal pre-processing module 3；Described verified optical fiber current mutual inductor 2 input electrically connects with adjustable current source module 1, and outfan electrically connects with gathering signal pre-processing module 3；Described collection signal pre-processing module 3 electrically connects with data collecting card 4；
Described industrial computer includes gathering signal trigger module 6, capture card and arranges the simulation transformer 5 of module 7 and verified optical fiber current mutual inductor, and described collection signal trigger module 6 electrically connects with the simulation transformer 5 of described data collecting card 4 and verified optical fiber current mutual inductor.
The output of electronic current mutual inductor is divided into a series of output level, and the analogue signal of output is that weak electric signal, driving force are poor, and traditional harvester is difficult to collect.This utility model adopts integrated level height, precision height, stable performance, reliable data collecting card PCI8025, by pci bus, sampling data transmitting is delivered to computer, it is ensured that the high speed of data transmission, effectiveness and stability.
Preferably, in the data collecting system of above-mentioned optical fiber current mutual inductor, the output electric current of adjustable current source module is 5%, 20%, 100% and the 120% of optical fiber current mutual inductor primary side rated value, and frequency is 50Hz.Then each primary side rated value corresponding has a secondary side current after verified current transformer.The signal that data collecting card to gather is exactly this secondary side current, but due to this secondary side current not in the range ability of data collecting card, therefore before entering data collecting card, first pass through collection signal pre-processing module, the current signal of optical fiber current mutual inductor simulation output is converted to the current signal within the range ability of data collecting card.
Preferably, in the data collecting system of above-mentioned optical fiber current mutual inductor, described capture card arranges module and includes memory length handover module, AD acquisition mode handover module, triggering mode selection module, trigger source selection module, and burst types selects module, triggering set direction module, clock source, clock output, triggering level to arrange module.When the characteristic classification difference of verification, it is possible to by the selection of above-mentioned module and setting, realizing different specificity analysises.
In addition, this utility model additionally provides the virtual check system of a kind of optical fiber current mutual inductor, including data collecting system and the collection signal analysis module of any of the above-described described optical fiber current mutual inductor, described collection signal analysis module electrically connects with the simulation transformer of described data collecting card and verified optical fiber current mutual inductor.The effect gathering signal analysis module is first to recover the data collected to primary side current, then various method is adopted to eliminate the noise in signal and interference, utilizing window function digital filter to be filtered signal processing, DFT window function and interpolation algorithm carries out the specificity analysises such as frequency measurement.
Preferably, in the virtual check system of above-mentioned optical fiber current mutual inductor, also include being arranged on conditioning module after described data collecting card and the collection signal that gathers between signal analysis module.Secondary side is exported electric current and nurses one's health by the Signal-regulated kinase adopting versatility, while suppressing interference signal, signal is suitably amplified, enhances opsonizing capacity to measured signal, it is simple to be analyzed on virtual emulation platform.
By arranging the sample mode of data collecting card in virtual check system, ensure the synchronization of the sampled signal of simulation transformer and verified transformer, the nominal phase of optical fiber current mutual inductor is supplemented, eliminates the error impact that the intrinsic parameter of optical fiber current mutual inductor is brought.That is the check results adopting above-mentioned method of calibration is accurate.
For convenience of description, it is divided into various unit to be respectively described with function when describing apparatus above.Certainly, the function of each unit can be realized in same or multiple softwares and/or hardware when implementing this utility model.
The above is only detailed description of the invention of the present utility model, makes to skilled artisans appreciate that or realize this utility model.The multiple amendment of these embodiments be will be apparent to one skilled in the art, and generic principles defined herein when without departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, this utility model is not intended to be limited to the embodiments shown herein, and is to fit to the widest scope consistent with principles disclosed herein and features of novelty.
The above is only detailed description of the invention of the present utility model; it should be pointed out that, for those skilled in the art, under the premise without departing from this utility model principle; can also making some improvements and modifications, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (5)
1. the data collecting system of an optical fiber current mutual inductor, it is characterised in that include verified optical fiber current mutual inductor, data acquisition unit and industrial computer；Described data acquisition unit includes data collecting card, adjustable current source module and gathers signal pre-processing module；Described verified optical fiber current mutual inductor input electrically connects with adjustable current source module, and outfan electrically connects with gathering signal pre-processing module；Described collection signal pre-processing module electrically connects with data collecting card；
Described industrial computer includes gathering signal trigger module, capture card and arranges the simulation transformer of module and verified optical fiber current mutual inductor, and described collection signal trigger module electrically connects with the simulation transformer of described data collecting card and verified optical fiber current mutual inductor.
2. the data collecting system of optical fiber current mutual inductor according to claim 1, it is characterised in that the output electric current of adjustable current source module is 5%, 20%, 100% and the 120% of optical fiber current mutual inductor primary side rated value, and frequency is 50Hz.
3. the data collecting system of optical fiber current mutual inductor according to claim 1, it is characterized in that, described capture card arranges module and includes memory length handover module, AD acquisition mode handover module, triggering mode selection module, trigger source selection module, and burst types selects module, triggering set direction module, clock source, clock output, triggering level to arrange module.
4. the virtual check system of an optical fiber current mutual inductor, it is characterized in that, including the data collecting system of the optical fiber current mutual inductor as described in arbitrary in claim 1-3 and gather signal analysis module, described collection signal analysis module electrically connects with the simulation transformer of described data collecting card and verified optical fiber current mutual inductor.
5. the virtual check system of optical fiber current mutual inductor according to claim 4, it is characterised in that also include being arranged on conditioning module after described data collecting card and the collection signal that gathers between signal analysis module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521073774.3U CN205374717U (en) | 2015-12-22 | 2015-12-22 | Fiber current sensor's data acquisition and virtual calibration system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201521073774.3U CN205374717U (en) | 2015-12-22 | 2015-12-22 | Fiber current sensor's data acquisition and virtual calibration system |
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| CN205374717U true CN205374717U (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201521073774.3U Withdrawn - After Issue CN205374717U (en) | 2015-12-22 | 2015-12-22 | Fiber current sensor's data acquisition and virtual calibration system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109490806A (en) * | 2018-11-27 | 2019-03-19 | 南方电网科学研究院有限责任公司 | Detection method, system and device of sensor and readable storage medium |
-
2015
- 2015-12-22 CN CN201521073774.3U patent/CN205374717U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109490806A (en) * | 2018-11-27 | 2019-03-19 | 南方电网科学研究院有限责任公司 | Detection method, system and device of sensor and readable storage medium |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20160706 Effective date of abandoning: 20180417 |
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| AV01 | Patent right actively abandoned |