CN202886580U - Automated adjustment system for comprehensive multi-parameter electrical measuring instrument - Google Patents
Automated adjustment system for comprehensive multi-parameter electrical measuring instrument Download PDFInfo
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- CN202886580U CN202886580U CN 201220513852 CN201220513852U CN202886580U CN 202886580 U CN202886580 U CN 202886580U CN 201220513852 CN201220513852 CN 201220513852 CN 201220513852 U CN201220513852 U CN 201220513852U CN 202886580 U CN202886580 U CN 202886580U
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- 238000012360 testing method Methods 0.000 claims abstract description 32
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Abstract
The utility model discloses an automated adjustment system for a comprehensive multi-parameter electrical measuring instrument. The system comprises an upper computer and a harmonic power source; a multifunctional standard meter is arranged in the harmonic power source, the harmonic power source is connected with every multi-parameter electrical measuring instrument to be detected, and every multi-parameter electrical measuring instrument to be detected is tested by the harmonic power source through various output testing signals in different states; the upper computer is respectively connected with the harmonic power source and every multi-parameter electrical measuring instrument to be detected and is used for transmitting an electrical measurement value measured by the multifunctional standard meter into every multi-parameter electrical measuring instrument to be detected, and the measured value of every electrical measuring instrument to be detected is adjusted according to the electrical measurement value; and the upper computer is also used for reading the electrical measurement value of the harmonic multifunctional standard meter and the measured value of every multi-parameter electrical measuring instrument to be detected, calculating an error value between the electrical measurement value and the measured value, and generating a detection report. The system has the advantages of high efficiency of debugging and verification and high accuracy of calibration; no artificial error can be caused; and the labor burden of enterprises can be eased.
Description
Technical Field
The utility model relates to an electric power instrument field especially relates to an automatic timing system of instrument is surveyed to comprehensive multi-parameter electricity.
Background
In the current industries of electric power, petrochemical industry and the like, a comprehensive multi-parameter electric measuring instrument is more and more widely applied, a plurality of measuring functions of measuring phase voltage, line voltage, current, zero sequence current, apparent power, active power, reactive power, power factor, frequency and the like are integrated in one instrument, the instrument has higher-end functions of harmonic analysis and the like, a wiring mode of the instrument can be set, the instrument can be set to be a three-phase three-wire or three-phase four-wire mode, and the instrument also has the functions of remote signaling, remote control and the like, brings great convenience to users, but provides great challenges for the calibration and detection of the instrument, and is mainly represented in items and test points needing calibration and detection.
For the calibration and detection of the instrument, the traditional method is to manually set the output mode of the power source, raise the voltage, raise the current, set the power factor and the like, manually adjust the output value of the power source according to the measurement value of a standard table in the power source, manually operate a detected table to calibrate after the set output requirement is met, and calibrate the next test point after the calibration of one test point is completed. Standard sources can also be used to eliminate the time required for manual iterative adjustments using power sources, but standard sources are expensive. Generally speaking, manual calibration is time-consuming and labor-consuming, and is prone to human operator error or missed calibration of certain points.
The electric energy meter calibration device is widely used in the meter industry, and the functional block diagram of the calibration device is shown in fig. 1, the electric energy pulse of the standard meter 20 is sent to n meter positions such as the first electric energy meter 51, the second electric energy meter 52 …, the nth electric energy meter 5n and the like, the error calculator (the corresponding first error calculator 41 and the corresponding second error calculator 42 …, the nth error calculator 4 n) of each meter position calculates the error of the electric energy meter of the tested meter according to the ratio of the electric energy pulse of the standard meter and the electric pulse of the tested meter, but the calibration coefficient in each electric energy meter cannot be changed, and the test error of other items cannot be displayed. It is even impossible to use for debugging and calibrating the comprehensive multi-parameter electrical measuring instrument.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems of complex debugging and calibration process, large investment in manpower and material resources, low efficiency, and high possibility of missing in human, and provides an automatic adjustment and calibration system for automatically debugging and inspecting a plurality of instruments for comprehensive multiparameter electrical measurement instrument manufacturers and end users.
In order to achieve the aim, the automatic adjusting system of the comprehensive multi-parameter electric measuring instrument is characterized by comprising an upper computer and a harmonic power source; wherein,
the harmonic power source is internally provided with a multifunctional standard meter for measuring various electrical measurement values, is electrically connected with each tested multi-parameter electrical measuring instrument, and tests each tested multi-parameter electrical measuring instrument by utilizing various test signals output by the harmonic power source under different states;
the upper computer is respectively in communication connection with the harmonic power source and each detected multi-parameter electric measuring instrument, the upper computer transmits the electric measuring value measured by the multifunctional standard meter to each detected multi-parameter electric measuring instrument, and each detected electric measuring instrument adjusts the measured value of the upper computer according to the received electric measuring value;
and after reading the electrical measurement value of the multifunctional standard meter in the harmonic power source and the measurement value of each detected multi-parameter electrical measuring instrument, the upper computer calculates an error value between the measurement value of each detected multi-parameter electrical measuring instrument and the electrical measurement value of the multifunctional standard meter in the harmonic power source and generates a detection report according to the error value.
Preferably, the upper computer is in communication connection with the harmonic power source through an RS-232 interface.
Preferably, the upper computer is in communication connection with each multi-parameter electric measuring instrument to be detected through an RS-485 interface.
The automatic calibration method of the comprehensive multi-parameter electrical measuring instrument comprises the following steps:
the upper computer sets each detected multi-parameter electric measuring instrument to be in a corresponding calibration state according to an automatic calibration process;
the upper computer controls the harmonic power source to output various test signals to each detected multi-parameter electrical measuring instrument according to the automatic calibration process so as to test each detected multi-parameter electrical measuring instrument in different states;
the upper computer reads an electric measurement value of a multifunctional standard meter in the harmonic power source;
the upper computer transmits the electric measurement value measured by the multifunctional standard meter to each detected multi-parameter electric measuring instrument; and the number of the first and second groups,
and each detected electric measuring instrument adjusts the measured value of the electric measuring instrument according to the received electric measured value, and the calibration work is completed.
The automatic checking method of the automatic adjusting method of the comprehensive multi-parameter electric measuring instrument comprises the following steps:
the upper computer controls the harmonic power source to output various test signals to each tested multi-parameter electrical measuring instrument according to an automatic checking process so as to test each tested multi-parameter electrical measuring instrument in different states;
the upper computer reads an electric measurement value of a multifunctional standard meter in the harmonic power source;
the upper computer reads the measured value of each detected multi-parameter electric measuring instrument after the harmonic power source outputs stably, calculates the error value between the measured value of each detected multi-parameter electric measuring instrument and the electric measured value of the multifunctional standard meter in the harmonic power source, and stores the error value into the corresponding database; and the number of the first and second groups,
and the upper computer generates a detection report according to the error value, and unqualified items in the report are obviously marked by red fonts.
The utility model has the advantages that the efficiency of debugging and checking the automatic calibration system of the comprehensive multi-parameter electric measuring instrument is high, one instruction of the upper computer can replace a plurality of manual keys, the operation speed is high, and the number of one-time calibration is greatly increased; the calibration precision is high, and the data of the multifunctional standard table has no truncation error caused by manual input; human errors in the calibration process, such as missing detection points, can be substantially eliminated; and the robot replaces a human, so that the labor burden of an enterprise is reduced.
Drawings
Fig. 1 shows a schematic block diagram of a prior art calibration electric energy meter.
Fig. 2 shows a schematic block diagram of an automated tuning system for a comprehensive multiparameter electrical measuring instrument according to the present invention.
Fig. 3 shows a flow chart of the method for automatic calibration of the comprehensive multiparameter electrical measuring instrument.
FIG. 4 shows a flow chart of the method of automatic verification of the comprehensive multiparameter electrical measuring instrument.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Fig. 2 shows a schematic block diagram of an automatic calibration system of the comprehensive multi-parameter electrical measuring instrument, as shown in fig. 2, the automatic calibration system of the comprehensive multi-parameter electrical measuring instrument comprises an upper computer 10 and a harmonic power source 30.
The harmonic power source 30 has a multifunctional standard meter for measuring various electrical measurement values inside, the harmonic power source 30 is electrically connected with each multi-parameter electrical measuring instrument (the first multi-parameter electrical measuring instrument 71, the second multi-parameter electrical measuring instrument 72, …, the n-th multi-parameter electrical measuring instrument 7 n) to be tested, and the harmonic power source 30 tests each multi-parameter electrical measuring instrument to be tested in different states by using various test signals output by the harmonic power source.
The upper computer 10 is respectively in communication connection with the harmonic power source 30 and each detected multi-parameter electrical measuring instrument, particularly, the upper computer 10 is in communication connection with the harmonic power source 30 through an RS-232 interface, the upper computer 10 is in communication connection with each detected multi-parameter electrical measuring instrument through an RS-485 interface, and the RS-485 interface has the advantage that a plurality of detected multi-parameter electrical measuring instruments can be simultaneously connected into the same communication line. The upper computer 10 transmits the electrical measurement values measured by the multifunctional standard meter to each detected multi-parameter electrical measuring instrument, and each detected electrical measuring instrument adjusts the measurement value thereof according to the received electrical measurement values.
In addition, after the upper computer 10 reads the electrical measurement value of the multifunctional standard meter in the harmonic power source 30 and the measurement value of each detected multi-parameter electrical measuring instrument, an error value between the measurement value of each detected multi-parameter electrical measuring instrument and the electrical measurement value of the multifunctional standard meter in the harmonic power source 30 is calculated by an error calculation module 60 inside the upper computer, and a detection report is generated according to the error value.
Fig. 3 shows a flow chart of the automatic calibration method of the comprehensive multi-parameter electrical measuring instrument, and as shown in fig. 3, the automatic calibration method in the automatic calibration method of the comprehensive multi-parameter electrical measuring instrument comprises the following steps:
the upper computer 10 sets each multi-parameter electrical measuring instrument to be detected to be in a corresponding calibration state according to an automatic calibration process S11;
the upper computer 10 controls the harmonic power source 30 to output various test signals to each tested multi-parameter electrical measuring instrument according to the automatic calibration process so as to test each tested multi-parameter electrical measuring instrument S12;
the upper computer 10 reads an electric measurement value S13 of a multifunctional standard meter in the harmonic power source 30;
the upper computer 10 transmits the electric measurement value measured by the multifunctional standard meter to each detected multi-parameter electric measuring instrument S14; and the number of the first and second groups,
and (5) adjusting the measured value of each detected electric measuring instrument according to the received electric measured value, and finishing the calibration operation S15.
Specifically, the calibration items and sequence of the multi-parameter electrical measuring instrument to be detected comprise:
1. each voltage gear needs to be subjected to voltage zero calibration and voltage full calibration (comprising a three-phase three-wire and a three-phase four-wire);
2. calibrating the full scale of each current gear;
3. calibrating zero sequence current of each current gear;
4. calibrating when the three-phase four-wire active power factor is 1;
5. calibrating when the three-phase four-wire active power factor is 0;
6. calibrating when the three-phase four-wire reactive power factor is 1;
7. calibrating when the three-phase four-wire reactive power factor is 0;
8. calibrating when the three-phase three-wire active power factor is 1;
9. calibrating when the three-phase three-wire active power factor is 0;
10. calibrating when the three-phase three-wire reactive power factor is 1;
11. calibrating when the three-phase three-wire reactive power factor is 0;
12. calibrating harmonic parameters;
13. calibration of frequency measurements.
Fig. 4 shows a flow chart of the automatic inspection method of the comprehensive multi-parameter electrical measuring instrument, and as shown in fig. 4, the automatic inspection method in the automatic calibration method of the comprehensive multi-parameter electrical measuring instrument comprises the following steps:
the upper computer 10 controls the harmonic power source 30 to output various test signals to each tested multi-parameter electrical measuring instrument according to an automatic calibration process so as to test each tested multi-parameter electrical measuring instrument in different states S21;
the upper computer 10 reads an electric measurement value S22 of a multifunctional standard meter in the harmonic power source 30;
the upper computer 10 reads the measured value of each detected multi-parameter electrical measuring instrument after the harmonic power source 30 outputs the stable output, calculates the error value between the measured value of each detected multi-parameter electrical measuring instrument and the electrical measured value of the multifunctional standard meter in the harmonic power source through an internal error calculation module, and stores the error value in a corresponding database S23; and the number of the first and second groups,
the upper computer 10 generates a detection report according to the error value, and the unqualified items in the report are marked with red fonts obviously S24.
Specifically, the tested items and sequence of the multi-parameter electrical measuring instrument comprise:
1. carrying out error test on various measured values of voltage, current and active power in a three-phase three-wire active mode; the voltage and the current are proportionally changed from the maximum measurement value to the minimum measurement value in multiple points (the latter point is 80-50% of the former point value), and the coverage test is carried out on the multiple parameters;
2. carrying out error test on the influence of the basic measuring range of the multi-parameter instrument to be tested on the power factor and the frequency under the three-phase three-wire active mode;
3. carrying out error test on various measured values of the three-phase three-wire reactive power according to the test point similar to the step 1, and simultaneously carrying out frequency influence error test;
4. carrying out coverage test on various measured values of voltage, current, power and the like in a three-phase four-wire active mode according to the similar step 1;
5. carrying out error test on the influence of the basic measuring range of the multi-parameter instrument to be tested on the power factor and the frequency under the three-phase four-wire active mode;
6. carrying out error test on each measured value of the three-phase four-wire reactive power according to the test point similar to the step 1, and simultaneously carrying out frequency influence error test;
7. the upper computer 10 compares various measured values of each multi-parameter electric measuring instrument to be detected read by the communication command in the test process with various measured values of the harmonic power source 30, calculates various parameter errors (such as line voltage, phase voltage, current, zero sequence current, frequency, active power and reactive power in three lines, active power and reactive power in four lines, harmonic wave and the like) of each table at each error point, and generates a test report aiming at each table.
In summary, the preferred embodiments of the present invention are only described, and the scope of the present invention is not limited thereto. All equivalent changes and modifications made according to the content of the claims of the present invention shall fall within the technical scope of the present invention.
Claims (3)
1. The utility model provides an automatic timing system of comprehensive multi-parameter electricity measuring instrument which characterized in that: the adjusting system comprises an upper computer and a harmonic power source; wherein,
the harmonic power source is internally provided with a multifunctional standard meter for measuring various electrical measurement values, is electrically connected with each tested multi-parameter electrical measuring instrument, and tests each tested multi-parameter electrical measuring instrument by utilizing various test signals output by the harmonic power source under different states;
the upper computer is respectively in communication connection with the harmonic power source and each detected multi-parameter electric measuring instrument, the upper computer transmits the electric measuring value measured by the multifunctional standard meter to each detected multi-parameter electric measuring instrument, and each detected electric measuring instrument adjusts the measured value of the upper computer according to the received electric measuring value;
and after reading the electrical measurement value of the multifunctional standard meter in the harmonic power source and the measurement value of each detected multi-parameter electrical measuring instrument, the upper computer calculates an error value between the measurement value of each detected multi-parameter electrical measuring instrument and the electrical measurement value of the multifunctional standard meter in the harmonic power source and generates a detection report according to the error value.
2. The automated tuning system of a comprehensive multiparameter electrical measuring instrument of claim 1, wherein: and the upper computer is in communication connection with the harmonic power source through an RS-232 interface.
3. The automated tuning system of a comprehensive multiparameter electrical measuring instrument of claim 1, wherein: the upper computer is in communication connection with each multi-parameter electric measuring instrument to be detected through an RS-485 interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201220513852 CN202886580U (en) | 2012-09-29 | 2012-09-29 | Automated adjustment system for comprehensive multi-parameter electrical measuring instrument |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220513852 CN202886580U (en) | 2012-09-29 | 2012-09-29 | Automated adjustment system for comprehensive multi-parameter electrical measuring instrument |
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| CN202886580U true CN202886580U (en) | 2013-04-17 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102854485A (en) * | 2012-09-29 | 2013-01-02 | 深圳市亚特尔科技有限公司 | Automated adjustment system for comprehensive multi-parameter electrical measuring instrument and adjustment method |
| CN105891762A (en) * | 2014-09-18 | 2016-08-24 | 浙江万胜电力仪表有限公司 | Specification parameter setting method of power instrument |
| CN117518061A (en) * | 2024-01-04 | 2024-02-06 | 山东大学 | Electric measuring instrument detection data inspection system and method |
-
2012
- 2012-09-29 CN CN 201220513852 patent/CN202886580U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102854485A (en) * | 2012-09-29 | 2013-01-02 | 深圳市亚特尔科技有限公司 | Automated adjustment system for comprehensive multi-parameter electrical measuring instrument and adjustment method |
| CN105891762A (en) * | 2014-09-18 | 2016-08-24 | 浙江万胜电力仪表有限公司 | Specification parameter setting method of power instrument |
| CN105891762B (en) * | 2014-09-18 | 2019-06-18 | 浙江万胜电力仪表有限公司 | A kind of setting method of the specifications parameter of electric instrument |
| CN117518061A (en) * | 2024-01-04 | 2024-02-06 | 山东大学 | Electric measuring instrument detection data inspection system and method |
| CN117518061B (en) * | 2024-01-04 | 2024-03-29 | 山东大学 | Electric measuring instrument detection data inspection system and method |
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Granted publication date: 20130417 Termination date: 20150929 |
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