CN102680931B - Calibrating device for grounding connection parameter testing systems - Google Patents
Calibrating device for grounding connection parameter testing systems Download PDFInfo
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- CN102680931B CN102680931B CN201210141687.1A CN201210141687A CN102680931B CN 102680931 B CN102680931 B CN 102680931B CN 201210141687 A CN201210141687 A CN 201210141687A CN 102680931 B CN102680931 B CN 102680931B
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Abstract
The invention discloses a calibrating device for grounding connection parameter testing systems. The calibrating device comprises a case, an interference signal simulation module display (3), a loop impedance simulation module display (5), an impedance standard display (7) and an adjustable frequency standard signal source display (14) which are mounted on the case are respectively connected with an interference signal simulation module (2), a loop impedance simulation module (4), an impedance standard (6) and an adjustable frequency standard signal source (13) in the case, a current loop input interface terminal (1), a current loop output interface terminal (9), a first calibrating device sampled voltage interface terminal (11) and a calibrating device sampled voltage interface terminal (12) are arranged on the case, and thereby the calibrating device is formed. The impedance standard is embedded in the calibrating device, real-time frequency, current and voltage values are acquired, and a standard impedance value is compared with the impedance value displayed by a tested system in order to determine the accuracy of the tested system.
Description
Technical field
The present invention relates to calibrating installation; be specifically related to a kind of earthing device characterisitic parameter test macro calibrating installation; relate to the calibrating of earthing device characterisitic parameter test macro in electric system, meteorological system, large-scale industrial enterprise, comprise calibrating and the calibration of the power measuring instrument accuracies of an instrument such as frequency-selecting volometer, relay-protection tester, alternating current-direct current indicating instrument and electric energy meter.
Background technology
As everyone knows, in electric system, meteorological system, large-scale industrial enterprise, earthing device characterisitic parameter comprises the power frequency characterisitic parameters such as impedance ground, electrical integrity, touch voltage, place surface potential gradient, by earthing device characterisitic parameter test macro, can find in time hidden danger, guarantee the safe operation of electrical network.Thereby the accuracy of earthing device characterisitic parameter test macro is most important to equipment security of operation.
Yet, because earthing device characterisitic parameter test macro usage frequency is high, environment for use is poor, being subject to the impact of the factors such as electron device life-span, mechanical hook-up be aging, system accuracy and security performance can reduce, and have uncertain potential safety hazard; In addition, test macro is by different module compositions, and its manufacturer all parts of the country that distribute even all over the world, are returned factory-run school and tested extremely inconveniently, and applying unit also can not be bought various calibrating installations categorizedly.
Summary of the invention
The object of the invention is to: a kind of earthing device characterisitic parameter test macro calibrating installation is provided, overcome in electric system, meteorological system, large-scale industrial enterprise earthing device characterisitic parameter test macro without the deficiency of multi-functional calibrating device, applied widely, multi-functional calibrating device is provided, ground connection equipment energy characteristic parameter test system and other instrument and meters are examined and determine and calibrated.
The technology of the present invention solution is: this calibrating installation comprises housing, undesired signal simulated assembly display is installed on housing, impedance loop simulated assembly display, impedance calibrator display, adjustable frequency standard signal source display, on housing, establish current return input interface terminal, current return output interface terminal, the first calibrating installation sampling voltage Interface Terminal, the second calibrating installation sampling voltage Interface Terminal, undesired signal simulated assembly display, impedance loop simulated assembly display, impedance calibrator display, adjustable frequency standard signal source display respectively with housing in undesired signal simulated assembly, impedance loop simulated assembly, impedance calibrator, adjustable frequency standard signal source connects, whole formation calibrating installation.
The present invention is directed to the signal characteristic of electric system, meteorological system, the conventional earthing device characterisitic parameter test macro of industrial enterprise, according to the demand of accurate calibrating, embedding impedance standard, set up earth mat impedance loop simulated assembly under multiple environment, condition, frequency acquisition, electric current, voltage instantaneous value, and at liquid crystal display, show the instantaneous value of voltage, electric current, frequency, impedance, resistance, reactance, and compare with the resistance value that system under test (SUT) shows, determine the accuracy of system under test (SUT).
Accompanying drawing explanation
Fig. 1 is structural representation theory diagram of the present invention.
Fig. 2 is system under test (SUT) earth loop impedance test accuracy calibrating wiring schematic diagram.
Fig. 3 is system under test (SUT) interference free performance test wiring schematic diagram.
Fig. 4 is frequency-selecting volometer, alternating current-direct current indicating instrument accuracy calibrating wiring schematic diagram.
In figure: 1 current return input interface terminal, 2 undesired signal simulated assemblies, 3 undesired signal simulated assembly displays, 4 impedance loop simulated assemblies, 5 impedance loop simulated assembly displays, 6 impedance calibrators, 7 impedance calibrator displays, 9 current return output interface terminals, 10 systems under test (SUT), 11 first calibrating installation sampling voltage Interface Terminals, 12 second calibrating installation sampling voltage Interface Terminals, 13 adjustable frequency standard signal sources, 14 adjustable frequency standard signal source displays, 15 calibrating installations, 16 system under test (SUT) current return output interface terminals, 17 system under test (SUT) current return input interface terminals, 18 system under test (SUT) sampling voltage Interface Terminals, 19 system under test (SUT) sampling voltage Interface Terminals.
Embodiment
As shown in Figure 1, this calibrating installation comprises housing, undesired signal simulated assembly display 3 is installed on housing, impedance loop simulated assembly display 5, impedance calibrator display 7, adjustable frequency standard signal source display 14, on housing, establish current return input interface terminal 1, current return output interface terminal 9, the first calibrating installation sampling voltage Interface Terminal 11, the second calibrating installation sampling voltage Interface Terminal 12, undesired signal simulated assembly display 3, impedance loop simulated assembly display 5, impedance calibrator display 7, adjustable frequency standard signal source display 14 respectively with housing in undesired signal simulated assembly 2, impedance loop simulated assembly 4, impedance calibrator 6, adjustable frequency standard signal source 13 connects, whole formation calibrating installation.
(1) when system under test (SUT) 10 test impedance ground value accuracy are examined and determine: as shown in Figure 2, calibrating installation 15 comprises housing, impedance loop simulated assembly display 5 is installed on housing, impedance calibrator display 7, impedance loop simulated assembly display 5, impedance calibrator display 7 respectively with housing inner looping impedance simulation assembly 4, impedance calibrator 6 connects, on housing, current return input interface terminal 1 connects housing inner looping impedance simulation assembly 4, impedance loop simulated assembly 4 connects impedance calibrator 6, impedance calibrator 6 connects current return output interface terminal 9 on housing, housing internal impedance standard two ends connect first, the second calibrating installation sampling voltage Interface Terminal 11, 12.
During installation, the current return input interface terminal 1 of calibrating installation 15 connects system under test (SUT) current return output interface terminal 16, the current return output interface terminal 9 of calibrating installation 15 connects system under test (SUT) current return input interface terminal 17, the first calibrating installation voltage circuit Interface Terminals 11 and connects system under test (SUT) voltage circuit input interface terminal 18, the second calibrating installation voltage circuit Interface Terminal 12 connection system under test (SUT) voltage circuit input interface terminals 19; During use, the output current of system under test (SUT) 10 is by impedance loop simulated assembly 4 and the impedance calibrator 6 of calibrating installation, in impedance calibrator 6, form the also resistance value of display standard, compare with the resistance value that system under test (SUT) shows, determine the accuracy of system under test (SUT).
(2) when system under test (SUT) interference free performance is tested: as shown in Figure 3, calibrating installation 15 comprises housing, interference signal source display 3 is installed on housing, impedance loop simulated assembly display 5, impedance calibrator display 7, interference signal source display 3, impedance loop simulated assembly display 5, impedance calibrator display 7 respectively with housing in undesired signal source component 2, impedance loop simulated assembly 4, impedance calibrator 6 connects, in calibrating installation 15, current return input interface terminal 1 connects undesired signal source component 2, undesired signal source component 2 link circuit impedance simulation assemblies 4, impedance loop simulated assembly 4 connects impedance calibrator 6, impedance calibrator 6 connects current return output interface terminal 9, shell internal impedance standard 6 two ends connect first, the second calibrating installation sampling voltage Interface Terminal 11, 12.
During installation, in calibrating installation 15, current return input interface terminal 1 connects system under test (SUT) current return output interface terminal 16, the current return output interface terminal 9 of calibrating installation 15 connects system under test (SUT) current return input interface terminal 17, the first calibrating installation voltage circuit Interface Terminal 11 connects system under test (SUT) voltage circuit input interface terminal 18, the second calibrating installation voltage circuit Interface Terminals 12 and connects system under test (SUT) voltage circuit input interface terminal 19; During use, the output current of system under test (SUT) is by undesired signal source component 2, impedance loop simulated assembly 4 and the impedance calibrator 6 of calibrating installation, in impedance calibrator 6, form the also resistance value of display standard, compare with the resistance value that system under test (SUT) shows, observe system under test (SUT) accuracy after adding selectable undesired signal and whether change, to determine the interference free performance of system under test (SUT).
(3) when frequency-selecting volometer, the accuracy of alternating current-direct current indicating instrument are examined and determine: as shown in Figure 4, calibrating installation 15 comprises housing, adjustable frequency standard signal source display 14 is installed on housing, adjustable frequency standard signal source display 14 is connected with adjustable frequency standard signal source 13 in housing, the first calibrating installation voltage circuit Interface Terminal 11 connects adjustable frequency standard signal source 13, and adjustable frequency standard signal source 13 connects the second calibrating installation voltage circuit Interface Terminal 12.
During installation, the first calibrating installation voltage circuit Interface Terminal 11 connects system under test (SUT) voltage circuit input interface terminal 18, the second calibrating installation voltage circuit Interface Terminals 12 and connects system under test (SUT) voltage circuit input interface terminal 19; During use, adjustable frequency standard signal source 13 shows and adjustable normal voltage, the current signal of output frequency, observes system under test (SUT) pair.
Claims (1)
1. earthing device characterisitic parameter test macro calibrating installation, this calibrating installation comprises housing, it is characterized in that: undesired signal simulated assembly display (3) is installed on housing, impedance loop simulated assembly display (5), impedance calibrator display (7), adjustable frequency standard signal source display (14), on housing, establish current return input interface terminal (1), current return output interface terminal (9), the first calibrating installation sampling voltage Interface Terminal (11), the second calibrating installation sampling voltage Interface Terminal (12), undesired signal simulated assembly display (3), impedance loop simulated assembly display (5), impedance calibrator display (7), adjustable frequency standard signal source display (14) respectively with housing in undesired signal simulated assembly (2), impedance loop simulated assembly (4), impedance calibrator (6), adjustable frequency standard signal source (13) connects, whole formation calibrating installation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210141687.1A CN102680931B (en) | 2012-05-09 | 2012-05-09 | Calibrating device for grounding connection parameter testing systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210141687.1A CN102680931B (en) | 2012-05-09 | 2012-05-09 | Calibrating device for grounding connection parameter testing systems |
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| CN102680931A CN102680931A (en) | 2012-09-19 |
| CN102680931B true CN102680931B (en) | 2014-04-09 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103412273B (en) * | 2013-07-29 | 2016-01-06 | 北京无线电计量测试研究所 | A kind of calibrating method of coaxial offset standard device input impedance characteristic |
| CN104977554A (en) * | 2014-04-10 | 2015-10-14 | 陈书欣 | Detection device for storage battery internal resistance tester |
| CN109581257B (en) * | 2018-10-29 | 2023-12-29 | 武汉市康达电气有限公司 | Metering and calibrating device of large-scale grounding device grounding impedance tester |
| CN112230180A (en) * | 2020-09-27 | 2021-01-15 | 青岛鼎信通讯股份有限公司 | Signal source phase modulation method of electric energy meter calibrating device based on FPGA |
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| CH549808A (en) * | 1971-03-04 | 1974-05-31 | Ficker Karl | MEASURING DEVICE FOR DETERMINING THE RESISTANCE AND EFFECTIVENESS OF PROTECTIVE EARTHING OF A DISTRIBUTION NETWORK WITH OR WITHOUT EARTHED NEUTRAL. |
| CN200953038Y (en) * | 2006-05-15 | 2007-09-26 | 西安四方机电有限责任公司 | Counterpoise comprehensive parameter testing device |
| CN201229381Y (en) * | 2008-07-30 | 2009-04-29 | 湖南省电力公司试验研究院 | Anomalous frequency test system for ground resistance of grounded screen |
| CN101989223A (en) * | 2009-08-05 | 2011-03-23 | 鸿富锦精密工业（深圳）有限公司 | System impedance simulator |
| CN202583442U (en) * | 2012-05-09 | 2012-12-05 | 南京安吉特电气科技有限公司 | Calibrating apparatus for grounding device characteristic parameter test system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4421762B2 (en) * | 2000-10-31 | 2010-02-24 | 日置電機株式会社 | Ground resistance measuring device |
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| CH549808A (en) * | 1971-03-04 | 1974-05-31 | Ficker Karl | MEASURING DEVICE FOR DETERMINING THE RESISTANCE AND EFFECTIVENESS OF PROTECTIVE EARTHING OF A DISTRIBUTION NETWORK WITH OR WITHOUT EARTHED NEUTRAL. |
| CN200953038Y (en) * | 2006-05-15 | 2007-09-26 | 西安四方机电有限责任公司 | Counterpoise comprehensive parameter testing device |
| CN201229381Y (en) * | 2008-07-30 | 2009-04-29 | 湖南省电力公司试验研究院 | Anomalous frequency test system for ground resistance of grounded screen |
| CN101989223A (en) * | 2009-08-05 | 2011-03-23 | 鸿富锦精密工业（深圳）有限公司 | System impedance simulator |
| CN202583442U (en) * | 2012-05-09 | 2012-12-05 | 南京安吉特电气科技有限公司 | Calibrating apparatus for grounding device characteristic parameter test system |
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| JP特开2002-139530A 2002.05.17 |
| 关于大型地网接地阻抗的测量和安全判据;要焕年 等;《电力设备》;20020930;第3卷(第3期);第42-44页 * |
| 提高大型接地网接地阻抗测量准确性的方法和措施;金祖山 等;《水电能源科学》;20051031;第23卷(第5期);第76-77页 * |
| 要焕年 等.关于大型地网接地阻抗的测量和安全判据.《电力设备》.2002,第3卷(第3期), |
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Application publication date: 20120919 Assignee: HUAIAN SUDA ELECTRICAL Co.,Ltd. Assignor: NANJING ANJITE ELECTRICAL TECHNOLOGY Co.,Ltd. Contract record no.: 2013320000590 Denomination of invention: Calibrating device for grounding connection parameter testing systems License type: Exclusive License Record date: 20130621 |
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