CN103885021A - Electronic type mutual inductor verification instrument performance detection method and system - Google Patents
Electronic type mutual inductor verification instrument performance detection method and system Download PDFInfo
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Abstract
The invention belongs to the field of electronic type mutual inductor verification instrument detection, and provides an electronic type mutual inductor verification instrument performance detection method and system. In the invention, the preset analog signal quantity and digital signal quantity with the same numerical value are respectively inputted, a first error of the detected electronic type mutual inductor verification instrument is calculated according to the analog signal quantity and the digital signal quantity displayed by the detected electronic type mutual inductor verification instrument, then the preset digital signal micro differential quantity is superposed on the original digital signal quantity so that a theoretical differential value displayed by the detected electronic type mutual inductor verification instrument is obtained. Then a second error of the detected electronic type mutual inductor verification instrument is obtained via calculating size of a practical differential value and the theoretical differential value. Performance of the detected electronic type mutual inductor verification instrument can be judged according to the obtained errors and the permitted maximum error. The electronic type mutual inductor verification instrument detection method is simple. The detection system designed on the basis of the detection method is simple in design and relatively high in reliability.
Description
Technical field
The invention belongs to the detection field of electronic transducer calibration instrument, relate in particular to a kind of method for testing performance and system of electronic transducer calibration instrument.
Background technology
Along with the development of intelligent grid rapid technological improvement, the Pilot project construction of digital transformer substation is more and more, according to Guangdong Power Grid company " 12 " Electric Power Network Planning, at least build a 220kV digital transformer substation in 21 each cities of prefecture-level city of the whole province, the whole province at least builds a 500kV digital transformer substation.Owing to adopting optical fiber to carry out the transmission of digital quantity, there is not the AD Acquisition Error of secondary voltage drop and simulation electric energy meter in digital transformer substation, this has greatly reduced the error of conventional metered dose secondary circuit.Digitizing is the direction of world today's electric power development.
Numeral (photoelectricity) mutual inductor is the bridge to digital world as simulated world, occupies very important status in digital transformer substation, can think that numeral (photoelectricity) mutual inductor is the foundation stone of digital transformer substation, and all digital quantities are all to originate it.Therefore precision and the performance of numeral (photoelectricity) mutual inductor are extremely important.China's measurement Law stipulates that all measurement instruments all must the amount of obtaining pass, and namely all measurement instruments all must be able to be realized the north source of numerical value.Therefore needing in actual applications, to numeral (photoelectricity) mutual inductor amount of carrying out biography, after installing at the scene also needs it to carry out verification, verifies its measuring accuracy and stability, and the correctness that IEC61850 agreement is supported.
And the reliability of the check results of electronic mutual inductor also needs to decide according to the precision of tester itself, but comparatively complexity and detection system design complexity of the detection method of the performance of prior art to electronic transducer calibration instrument, and reliability can not be guaranteed.
Summary of the invention
The invention provides a kind of method for testing performance of electronic transducer calibration instrument, be intended to solve the detection method complexity of the existing performance to electronic transducer calibration instrument, and the problem that detection system design is complicated, reliability is low.
In order to solve the problems of the technologies described above, the present invention is achieved in that a kind of method for testing performance of electronic transducer calibration instrument, and the detection method of described electronic transducer calibration instrument comprises the following steps:
To preset simulating signal amount and input tested electronic transducer calibration instrument;
By the described tested electronic transducer calibration instrument of digital signal amount input identical with described default simulating signal amount numerical value;
Obtain the first error amount of described tested electronic transducer calibration instrument;
To after a preset number signal elementary errors amount of described digital signal amount stack, input described tested electronic transducer calibration instrument with described default simulating signal amount;
Obtain the second error amount of described tested electronic transducer calibration instrument.
Further, it is characterized in that, described in obtain the first error of described electronic transducer calibration instrument step specifically comprise the following steps:
Read the first simulating signal amount and the first digital signal amount that described tested electronic transducer calibration instrument shows;
Calculate the difference of described the first simulating signal amount and the first digital signal amount, using the first error amount as described tested electronic transducer calibration instrument.
Further, the step of obtaining the second error of described electronic transducer calibration instrument described in specifically comprises the following steps:
Read the second simulating signal amount and the second digital signal amount that described tested electronic transducer calibration instrument shows;
Calculate the difference of described the second simulating signal amount and the second digital signal amount;
According to the second error amount of described difference and the described tested electronic transducer calibration instrument of described preset number signal elementary errors amount calculating.
Further, the described step according to the second error amount of described difference and the described tested electronic transducer calibration instrument of described preset number signal elementary errors amount calculating is specially:
Calculate the second error amount of described tested electronic transducer calibration instrument according to following formula;
ΔH=H
1-H
2；
Wherein, Δ H represents the second error amount of described detected electrons formula mutual-inductor tester, and H1 represents the second simulating signal amount of described demonstration and the difference of the second digital signal amount, and H2 represents the numerical value of described preset number signal elementary errors amount.
Further, described simulating signal amount and described digital signal amount are vector value, and described vector value comprises amplitude and phase place.
The present invention also provides a kind of performance detecting system of electronic transducer calibration instrument, is connected with tested electronic transducer calibration instrument, and the detection system of described electronic transducer calibration instrument comprises:
Simulating signal amount output unit, inputs tested electronic transducer calibration instrument for presetting simulating signal amount;
Digital signal amount output unit, for inputting described tested electronic transducer calibration instrument by digital signal amount identical with described default simulating signal amount numerical value;
The first acquiring unit, for obtaining the first error amount of described tested electronic transducer calibration instrument;
Elementary errors amount superpositing unit, for the preset number signal elementary errors amount that superposes in described digital signal amount;
Second acquisition unit, for obtaining the second error amount of described tested electronic transducer calibration instrument.
Further, the first acquiring unit comprises:
The first reading unit, the first simulating signal amount and the first digital signal amount that show for reading described tested electronic transducer calibration instrument;
The first computing unit, for calculating the difference of described the first simulating signal amount and the first digital signal amount, using the first error amount as described tested electronic transducer calibration instrument.
Further, described second acquisition unit comprises:
The second reading unit, the second simulating signal amount and the second digital signal amount that show for reading described tested electronic transducer calibration instrument;
The second computing unit, for calculating the difference of described the second simulating signal amount and the second digital signal amount;
The 3rd computing unit, for calculating the second error amount of described tested electronic transducer calibration instrument according to described difference and described preset number signal elementary errors amount.
Further, described the 3rd computing unit specifically for:
Calculate the second error amount of described tested electronic transducer calibration instrument according to following formula;
ΔH=H
1-H
2；；
Wherein, Δ H represents the second error amount of described detected electrons formula mutual-inductor tester, and H1 represents the second simulating signal amount of described demonstration and the difference of the second digital signal amount, and H2 represents the numerical value of described preset number signal elementary errors amount.
Further, described simulating signal amount and described digital signal amount are vector value, and described vector value comprises amplitude and phase place.
In the present invention, by inputting respectively default simulating signal amount and the digital signal amount that numerical value is identical, the simulating signal amount showing according to tested electronic transducer calibration instrument and digital signal amount are calculated the first error of tested electronic transducer calibration instrument, then the preset number that superposes signal elementary errors amount is in original digital signal amount, obtain the theoretical difference that tested electronic transducer calibration instrument shows, then the size of calculating actual difference and theoretical difference obtains the second error of tested electronic transducer calibration instrument, can judge the performance of tested electronic transducer calibration instrument according to the error obtaining and permission maximum error, the detection method of electronic transducer calibration instrument provided by the invention is simple, higher according to detection system simplicity of design and the reliability of this detection method design.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of the method for testing performance of the electronic transducer calibration instrument that provides of first embodiment of the invention;
Fig. 2 is the process flow diagram of the method for testing performance of the electronic transducer calibration instrument that provides of second embodiment of the invention;
Fig. 3 is the process flow diagram of the method for testing performance of the electronic transducer calibration instrument that provides of third embodiment of the invention;
Fig. 4 is the frame construction drawing of the performance detecting system of the electronic transducer calibration instrument that provides of the embodiment of the present invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Below in conjunction with specific embodiment, specific implementation of the present invention is described in detail:
Fig. 1 shows the flow process of the method for testing performance of the electronic transducer calibration instrument that the embodiment of the present invention provides, and for convenience of explanation, only lists the part relevant to first embodiment of the invention, and details are as follows:
The embodiment of the present invention provides a kind of method for testing performance of electronic transducer calibration instrument, and this detection method comprises the following steps:
Step S100, will preset simulating signal amount and input tested electronic transducer calibration instrument.
In embodiments of the present invention, for the performance to electronic transducer calibration instrument detects, the simulating signal amount setting in advance is inputted to the input end of analog signal of tested electronic transducer calibration instrument, this default simulating signal input quantity is vector value, comprise amplitude and phase place, whether the analog quantity numerical value that detects tested electronic transducer calibration instrument demonstration is consistent with the simulating signal amount of input, and calculated difference, it is error, compare with the maximum error allowing so that follow-up, to judge the performance of tested electric mutual inductor tester.
Step S200, the numerical value digital signal amount identical with default simulating signal amount inputted to tested electronic transducer calibration instrument.
In step S200, the digital signal amount of inputting tested electronic transducer calibration instrument is identical with the numerical value of default simulating signal amount, be convenient to the in the situation that of identical input quantity, the simulating signal amount and the digital signal amount that show be compared, and then can obtain the error at this tested electronic transducer calibration instrument of moment.
Step S300, obtain the first error amount of tested electronic transducer calibration instrument.
As shown in Figure 2, as one embodiment of the invention, the step of obtaining the first error of electronic transducer calibration instrument specifically comprises the following steps:
Step S301, read the first simulating signal amount and the first digital signal amount that tested electronic transducer calibration instrument shows;
The difference of step S302, calculating the first simulating signal amount and the first digital signal amount, using the first error amount as tested electronic transducer calibration instrument.
In step S302, the first simulating signal amount and the first digital signal amount are respectively the default simulating signal amount of the tested electronic transducer calibration instrument of input and the testing result of digital signal amount, the i.e. error amount of tested electronic transducer calibration instrument now of the difference of the first simulating signal amount and the first digital signal amount, for example, default simulating signal amount is [100V, 0 °], the digital signal amount of input is also [100V, 0 °], when the first simulating signal amount is [100V, 0 °], the first digital signal amount is [100V, 0 °] time, show that now the error of tested electronic transducer calibration instrument is 0, when the first simulating signal amount is [101V, 2 °], the first digital signal amount is [100V, 0 °] time, represent that now the error of electronic transducer calibration instrument is [1V, 2 °], the rest may be inferred, can obtain the error amount of tested electronic transducer calibration instrument, it is the quality of performance.
Step S400, will after a preset number signal elementary errors amount of this digital signal amount stack, input tested electronic transducer calibration instrument with default simulating signal amount.
In step S400, a default digital signal elementary errors amount superposes in original digital signal amount, this digital signal elementary errors amount is also vector value, for example [10V, 2 °], then the digital signal amount of the digital signal elementary errors amount that superposeed and original default simulating signal amount are all inputted to tested electronic transducer calibration instrument, the digital signal elementary errors amount of this stack is the theoretical difference that tested electronic transducer calibration instrument shows.
Step S500, obtain the second error amount of tested electronic transducer calibration instrument.
As shown in Figure 3, as one embodiment of the invention, in step S500, the step of obtaining the second error of electronic transducer calibration instrument specifically comprises the following steps:
Step S501, read the second simulating signal amount and the second digital signal amount that tested electronic transducer calibration instrument shows.
The difference of step S502, calculating the second simulating signal amount and the second digital signal amount.
In step S502, the difference of the second simulating signal amount and the second digital signal amount is the difference of the testing result of the digital signal amount of the default simulating signal amount of input and the digital signal elementary errors amount that superposeed, for example, default simulating signal amount is [100V, 0 °], original digital signal amount is identical with default analog quantity is also [100V, 0 °], preset number signal elementary errors amount is [10V, 2 °], when the second simulating signal amount is [99V,-1 °], the second digital signal amount is [110V, 2 °] time, the difference of the second simulating signal amount and the second digital signal amount is [11V, 3 °], in all embodiment of the present invention, difference all takes absolute value.
Step S503, calculate the second error amount of tested electronic transducer calibration instrument according to difference and preset number signal elementary errors amount.
In step S503, the step of calculating the second error amount of tested electronic transducer calibration instrument according to difference and preset number signal elementary errors amount is specially:
Calculate the second error amount of tested electronic transducer calibration instrument according to following formula;
ΔH=H
1-H
2；；
Wherein, Δ H represents the second error amount of detected electrons formula mutual-inductor tester, and H1 represents the difference of the second simulating signal amount and the second digital signal amount, and H2 represents the numerical value of preset number signal elementary errors amount.
In embodiments of the present invention, the value of Δ H is the error of tested electronic transducer calibration instrument now, according to the data for example in above-mentioned steps S502, Δ H=[11V, 3 °]-[10V, 2 °]=[1V, 1 °], now the error of tested electronic transducer calibration instrument is [1V, 1 °].
In embodiments of the present invention, it is the detection error of tested electronic transducer calibration instrument according to the error amount calculating, can judge the performance of tested electronic transducer calibration instrument according to the error range of this error and permission, and the performance of tested electronic transducer calibration instrument directly has influence on the qualification rate of electronic mutual inductor.
Fig. 4 shows the framed structure of the performance detecting system of the electronic transducer calibration instrument that the embodiment of the present invention provides, and for convenience of explanation, only lists the part relevant to the embodiment of the present invention, and details are as follows:
As one embodiment of the invention, the performance detecting system 10 of the electronic transducer calibration instrument that the embodiment of the present invention provides is connected with tested electronic transducer calibration instrument 20, comprising:
Simulating signal amount output unit 100, inputs tested electronic transducer calibration instrument for presetting simulating signal amount;
Digital signal amount output unit 200, for inputting tested electronic transducer calibration instrument by digital signal amount identical with simulating signal amount numerical value;
The first acquiring unit 300, for obtaining the first error amount of tested electronic transducer calibration instrument;
Elementary errors amount superpositing unit 400, for the preset number signal elementary errors amount that superposes in digital signal amount;
In embodiments of the present invention, digital signal amount output unit 200 is also for inputting tested electronic transducer calibration instrument 20 by the digital signal amount of the digital signal elementary errors amount that superposeed.
As one embodiment of the invention, the first acquiring unit 300 comprises:
The first reading unit 301, the first simulating signal amount and the first digital signal amount that show for reading tested electronic transducer calibration instrument;
The first computing unit 302, for calculating the difference of the first simulating signal amount and the first digital signal amount, using the first error amount as tested electronic transducer calibration instrument.
As one embodiment of the invention, second acquisition unit 500 comprises:
The second reading unit 501, the second simulating signal amount and the second digital signal amount that show for reading tested electronic transducer calibration instrument;
The second computing unit 502, for calculating the difference of the second simulating signal amount and the second digital signal amount;
The 3rd computing unit 503, for calculating the second error amount of tested electronic transducer calibration instrument according to this difference and preset number signal elementary errors amount.
As one embodiment of the invention, the 3rd computing unit 503 specifically for:
Calculate the second error amount of tested electronic transducer calibration instrument according to following formula;
ΔH=H
1-H
2；
Wherein, Δ H represents the second error amount of detected electrons formula mutual-inductor tester, and H1 represents the difference of the second simulating signal amount and the second digital signal amount, and H2 represents the numerical value of preset number signal elementary errors amount.
As one embodiment of the invention, this simulating signal amount and this digital signal amount are vector value, and this vector value comprises amplitude and phase place.
In embodiments of the present invention, by inputting respectively default simulating signal amount and the digital signal amount that numerical value is identical, the simulating signal amount showing according to tested electronic transducer calibration instrument and digital signal amount are calculated the first error of tested electronic transducer calibration instrument, then the preset number that superposes signal elementary errors amount is in original digital signal amount, obtain the theoretical difference that tested electronic transducer calibration instrument shows, then the size of calculating actual difference and theoretical difference obtains the second error of tested electronic transducer calibration instrument, can judge the performance of tested electronic transducer calibration instrument according to the error obtaining and permission maximum error, the detection method of electronic transducer calibration instrument provided by the invention is simple, higher according to detection system simplicity of design and the reliability of this detection method design.
It will be appreciated by those skilled in the art that the unit that comprises for above-described embodiment is just divided according to function logic, but be not limited to above-mentioned division, as long as can realize corresponding function; In addition, the concrete title of each functional unit also, just for the ease of mutual differentiation, is not limited to protection scope of the present invention.
Those of ordinary skills it is also understood that, the all or part of step realizing in above-described embodiment method is can carry out the hardware that instruction is relevant by program to complete, described program can be being stored in a computer read/write memory medium, described storage medium, comprises ROM/RAM, disk, CD etc.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a method for testing performance for electronic transducer calibration instrument, is characterized in that, the detection method of described electronic transducer calibration instrument comprises the following steps:
To preset simulating signal amount and input tested electronic transducer calibration instrument;
By the described tested electronic transducer calibration instrument of digital signal amount input identical with described default simulating signal amount numerical value;
Obtain the first error amount of described tested electronic transducer calibration instrument;
To after a preset number signal elementary errors amount of described digital signal amount stack, input described tested electronic transducer calibration instrument with described default simulating signal amount;
Obtain the second error amount of described tested electronic transducer calibration instrument.
2. the method for testing performance of electronic transducer calibration instrument as claimed in claim 1, is characterized in that, described in obtain the first error of described electronic transducer calibration instrument step specifically comprise the following steps:
Read the first simulating signal amount and the first digital signal amount that described tested electronic transducer calibration instrument shows;
Calculate the difference of described the first simulating signal amount and the first digital signal amount, using the first error amount as described tested electronic transducer calibration instrument.
3. the method for testing performance of electronic transducer calibration instrument as claimed in claim 1, is characterized in that, described in obtain the second error of described electronic transducer calibration instrument step specifically comprise the following steps:
Read the second simulating signal amount and the second digital signal amount that described tested electronic transducer calibration instrument shows;
Calculate the difference of described the second simulating signal amount and the second digital signal amount;
According to the second error amount of described difference and the described tested electronic transducer calibration instrument of described preset number signal elementary errors amount calculating.
4. the method for testing performance of electronic transducer calibration instrument as claimed in claim 3, is characterized in that, the described step according to the second error amount of described difference and the described tested electronic transducer calibration instrument of described preset number signal elementary errors amount calculating is specially:
Calculate the second error amount of described tested electronic transducer calibration instrument according to following formula;
ΔH=H
1-H
2；
Wherein, Δ H represents the second error amount of described detected electrons formula mutual-inductor tester, and H1 represents the difference of described the second simulating signal amount and the second digital signal amount, and H2 represents the numerical value of described preset number signal elementary errors amount.
5. the method for testing performance of the electronic transducer calibration instrument as described in as arbitrary in claim 1-4, is characterized in that, described simulating signal amount and described digital signal amount are vector value, and described vector value comprises amplitude and phase place.
6. a performance detecting system for electronic transducer calibration instrument, is connected with tested electronic transducer calibration instrument, it is characterized in that, the detection system of described electronic transducer calibration instrument comprises:
Simulating signal amount output unit, inputs tested electronic transducer calibration instrument for presetting simulating signal amount;
Digital signal amount output unit, for inputting described tested electronic transducer calibration instrument by digital signal amount identical with described default simulating signal amount numerical value;
The first acquiring unit, for obtaining the first error amount of described tested electronic transducer calibration instrument;
Elementary errors amount superpositing unit, for the preset number signal elementary errors amount that superposes in described digital signal amount;
Second acquisition unit, for obtaining the second error amount of described tested electronic transducer calibration instrument.
7. the performance detecting system of electronic transducer calibration instrument as claimed in claim 6, is characterized in that, the first acquiring unit comprises:
The first reading unit, the first simulating signal amount and the first digital signal amount that show for reading described tested electronic transducer calibration instrument;
The first computing unit, for calculating the difference of described the first simulating signal amount and the first digital signal amount, using the first error amount as described tested electronic transducer calibration instrument.
8. the performance detecting system of electronic transducer calibration instrument as claimed in claim 6, is characterized in that, described second acquisition unit comprises:
The second reading unit, the second simulating signal amount and the second digital signal amount that show for reading described tested electronic transducer calibration instrument;
The second computing unit, for calculating the difference of described the second simulating signal amount and the second digital signal amount;
The 3rd computing unit, for calculating the second error amount of described tested electronic transducer calibration instrument according to described difference and described preset number signal elementary errors amount.
9. the performance detecting system of electronic transducer calibration instrument as claimed in claim 3, is characterized in that, described the 3rd computing unit specifically for:
Calculate the second error amount of described tested electronic transducer calibration instrument according to following formula;
Δ H=H
1one H
2;
Wherein, Δ H represents the second error amount of described detected electrons formula mutual-inductor tester, and H1 represents the difference of described the second simulating signal amount and the second digital signal amount, and H2 represents the numerical value of described preset number signal elementary errors amount.
10. the performance detecting system of the electronic transducer calibration instrument as described in as arbitrary in claim 6-9, is characterized in that, described simulating signal amount and described digital signal amount are vector value, and described vector value comprises amplitude and phase place.
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| CN201310664063.2A CN103885021A (en) | 2013-12-09 | 2013-12-09 | Electronic type mutual inductor verification instrument performance detection method and system |
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| CN105954702A (en) * | 2016-07-18 | 2016-09-21 | 国家电网公司 | Electronic transformer calibrator phase error detection system and method |
| CN114280526A (en) * | 2022-03-03 | 2022-04-05 | 武汉格蓝若智能技术有限公司 | Digital differential traceability system and method for electronic transformer calibrator |
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Application publication date: 20140625 |