Automatic calibration system for impedance tester
An impedance tester and automatic calibration technology, applied in the direction of instruments, measuring devices, measuring electrical variables, etc., can solve the problems of low work efficiency, inability to perform automatic processing, long working hours, etc., achieve intelligent calibration, and facilitate promotion , the effect of simple operation
Pending Publication Date: 2020-09-22
云南电力技术有限责任公司
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Problems solved by technology
[0005] This application provides an automatic calibration system for impedance testers to solve the problems that existing calibration impedance testers still need to be manually operated, have long working hours, low work efficiency, and cannot be automated.
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[0017] Such as figure 1 As shown, the present application provides an automatic calibration system for impedance testers to solve the problems that existing calibration impedance testers still need to be manually operated, have long working hours, low work efficiency, and cannot be automated.
[0018] The application provides an automatic calibration system for an impedance tester, comprising a standard resistance group 1, a program-controlled line selection device 2 and a host computer 3; one end of the program-controlled line selection device 2 is connected to the standard resistance group 1, and the The other end of the program-controlled line selection device 2 is connected with the host computer 3;
[0019] The standard resistance group 1 is composed of multiple groups of standard resistances, wherein each group of standard resistances corresponds to a different standard resistance value;
[0020] The host computer 3 is configured to send instructions to the program-cont...
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The invention discloses an automatic calibration system for an impedance tester. The automatic calibration system comprises a standard resistor group, a program-controlled line selection device and anupper computer, wherein each group of standard resistors in the standard resistor group respectively corresponds to different standard resistance values; the upper computer is configured to send an instruction to the program-controlled line selection device according to the standard resistance value needing to be tested; the upper computer is also configured to receive the test data from an impedance tester to be verified for calculation to obtain a verification result; and the program-controlled line selection device is configured to automatically select one or more groups of standard resistors to be tested from the standard resistor group according to the instruction sent by the upper computer. The system is simple in operation and convenient to use, does not need manual intervention inthe verification process, does not need data processing, and can achieve the purpose of simply, conveniently and intelligently verifying the impedance tester. A verification result is accurate and clear; and the system is convenient to popularize, and can achieve automatic verification of the impedance tester no matter whether the impedance tester is provided with a communication interface or not.
Description
technical field [0001] The present application relates to the field of automatic calibration systems, in particular to an automatic calibration system for impedance testers. Background technique [0002] Impedance test is a basic test item in the field of power system technology, and impedance tester is the main tool for impedance test. At present, there are many manufacturers of impedance testers, and their design principles and accuracy also have their own strengths, but the calibration results are within the allowable range of error, and they are all qualified impedance testers. Because the accuracy of the impedance tester directly determines whether the measured impedance value is accurate, it must be calibrated after the impedance tester is produced; it must be calibrated at any time during use to ensure that the accuracy of the instrument is within the required range. [0003] To calibrate digital grounding resistance measuring equipment in the prior art, firstly, sel...
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CPCG01R35/005G01R35/007
Inventor 李小明秦忠陈俊威侯源廖圣谭志龙韩德孝王建露
Owner 云南电力技术有限责任公司