CN102680931A - Calibrating device for grounding connection parameter testing systems - Google Patents
Calibrating device for grounding connection parameter testing systems Download PDFInfo
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- CN102680931A CN102680931A CN2012101416871A CN201210141687A CN102680931A CN 102680931 A CN102680931 A CN 102680931A CN 2012101416871 A CN2012101416871 A CN 2012101416871A CN 201210141687 A CN201210141687 A CN 201210141687A CN 102680931 A CN102680931 A CN 102680931A
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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 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, the large-scale industrial enterprise, comprise the 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; The earthing device characterisitic parameter comprises power frequency characterisitic parameters such as impedance ground, electrical integrity, touch voltage, place surface potential gradient in electric system, meteorological system, the large-scale industrial enterprise; Can in time find hidden danger through earthing device characterisitic parameter test macro, guarantee the safe operation of electrical network.Thereby the accuracy of earthing device characterisitic parameter test macro is most important to equipment operation safety.
Yet, because earthing device characterisitic parameter test macro usage frequency is high, environment for use is relatively poor, receiving the influence of factors such as electron device life-span, mechanical hook-up wear out, system's accuracy and security performance can reduce, and have uncertain potential safety hazard; In addition, test macro is made up of different assemblies, and its manufacturer all parts of the country that distribute, even are all over the world 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 objective of the invention is to: a kind of earthing device characterisitic parameter test macro calibrating installation is provided; Overcoming earthing device characterisitic parameter test macro in electric system, meteorological system, the large-scale industrial enterprise does not have 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.
Technical solution of the present invention is: this calibrating installation comprises housing; Undesired signal simulated assembly display, impedance loop simulated assembly display, impedance calibrator display, adjustable frequency standard signal source display are installed on housing; On housing, establish current return input interface terminal, current return output interface terminal, calibrating installation sampling voltage Interface Terminal, 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 be connected, wholely constitute calibrating installation.
The present invention is directed to the signal characteristic of electric system, meteorological system, industrial enterprise's earthing device characterisitic parameter test macro commonly used; According to the demand of accurate calibrating, embed impedance calibrator, set up earth mat impedance loop simulated assembly under multiple environment, the condition; Frequency acquisition, electric current, voltage instantaneous value; And at the instantaneous value of liquid crystal display display voltage, electric current, frequency, impedance, resistance, reactance, compare with the resistance value that system under test (SUT) shows, confirm the accuracy of system under test (SUT).
Description of drawings
Fig. 1 is a structural representation theory diagram of the present invention.
Fig. 2 is a system under test (SUT) earth loop impedance test accuracy calibrating wiring schematic diagram.
Fig. 3 is a 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.
Among the 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 calibrating installation sampling voltage Interface Terminals, 12 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, impedance loop simulated assembly display 5, impedance calibrator display 7, adjustable frequency standard signal source display 14 are installed on housing; On housing, establish current return input interface terminal 1, current return output interface terminal 9, calibrating installation sampling voltage Interface Terminal 11, 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 be connected, wholely constitute calibrating installation.
When (1) 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, impedance calibrator display 7 are installed on housing; Impedance loop simulated assembly display 5, impedance calibrator display 7 are connected with housing inner looping impedance simulated assembly 4, impedance calibrator 6 respectively; Current return input interface terminal 1 connects housing inner looping impedance simulated assembly 4 on the housing; Impedance loop simulated assembly 4 connects impedance calibrator 6, and impedance calibrator 6 connects current return output interface terminal 9 on the housing, and housing internal impedance standard two ends connect 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, and calibrating installation voltage circuit Interface Terminal 11 connects system under test (SUT) voltage circuit input interface terminal 18, calibrating installation voltage circuit Interface Terminal 12 connects system under test (SUT) voltage circuit input interface terminal 19; During use; The output current of system under test (SUT) 10 is through the 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, confirm the accuracy of system under test (SUT) with the resistance value that system under test (SUT) shows.
When (2) the system under test (SUT) interference free performance is tested: as shown in Figure 3; Calibrating installation 15 comprises housing; Interference signal source display 3, impedance loop simulated assembly display 5, impedance calibrator display 7 are installed on housing; 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 be connected; Current return input interface terminal 1 connects undesired signal source component 2 in the calibrating installation 15, undesired signal source component 2 link circuit impedance simulated assemblies 4, and impedance loop simulated assembly 4 connects impedance calibrator 6; Impedance calibrator 6 connects current return output interface terminal 9, and shell internal impedance standard 6 two ends connect calibrating installation sampling voltage Interface Terminal 11,12.
During installation; Current return input interface terminal 1 connects system under test (SUT) current return output interface terminal 16 in the calibrating installation 15; The current return output interface terminal 9 of calibrating installation 15 connects system under test (SUT) current return input interface terminal 17; Calibrating installation voltage circuit Interface Terminal 11 connects system under test (SUT) voltage circuit input interface terminal 18, and calibrating installation voltage circuit Interface Terminal 12 connects system under test (SUT) voltage circuit input interface terminal 19; During use; The output current of system under test (SUT) is through 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 confirm the interference free performance of system under test (SUT).
(3) during frequency-selecting volometer, the accuracy of alternating current-direct current indicating instrument calibrating: 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 the interior adjustable frequency standard signal source 13 of housing, and calibrating installation voltage circuit Interface Terminal 11 connects adjustable frequency standard signal sources 13, and adjustable frequency standard signal source 13 connects calibrating installation voltage circuit Interface Terminals 12.
During installation, calibrating installation voltage circuit Interface Terminal 11 connects system under test (SUT) voltage circuit input interface terminal 18, and calibrating installation voltage circuit Interface Terminal 12 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 that it is right to observe system under test (SUT).
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), impedance loop simulated assembly display (5), impedance calibrator display (7), adjustable frequency standard signal source display (14) are installed on housing; On housing, establish current return input interface terminal (1), current return output interface terminal (9), calibrating installation sampling voltage Interface Terminal (11), 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) be connected, wholely constitute 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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| Publication Number | Publication Date |
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| CN102680931A true CN102680931A (en) | 2012-09-19 |
| CN102680931B CN102680931B (en) | 2014-04-09 |
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| CN201210141687.1A Expired - Fee Related CN102680931B (en) | 2012-05-09 | 2012-05-09 | Calibrating device for grounding connection parameter testing systems |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103412273A (en) * | 2013-07-29 | 2013-11-27 | 北京无线电计量测试研究所 | Calibration method for input impedance characteristics of coaxial bias etalon |
| CN104977554A (en) * | 2014-04-10 | 2015-10-14 | 陈书欣 | Detection device for storage battery internal resistance tester |
| CN109581257A (en) * | 2018-10-29 | 2019-04-05 | 武汉市康达电气有限公司 | A kind of metering and calibrating device of giant ground device earth loop impedance test instrument |
| 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. |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103412273A (en) * | 2013-07-29 | 2013-11-27 | 北京无线电计量测试研究所 | Calibration method for input impedance characteristics of coaxial bias etalon |
| 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 |
| CN109581257A (en) * | 2018-10-29 | 2019-04-05 | 武汉市康达电气有限公司 | A kind of metering and calibrating device of giant ground device earth loop impedance test instrument |
| 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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| Publication number | Publication date |
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| CN102680931B (en) | 2014-04-09 |
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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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Granted publication date: 20140409 |