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Voltage drop test device and method for IR46 ammeter calibrating device

A voltage drop and verification device technology, applied in the field of electric power, can solve problems such as failure to meet the R46 standard, affect voltage signal distortion, and long switching time, and achieve the effects of saving manpower and time costs, fast switching time, and accurate test results

Pending Publication Date: 2021-12-10
QINGDAO TOPSCOMM COMM
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The traditional voltage drop device affects the distortion of the voltage signal, and the switching time is long, which cannot meet the R46 standard

Method used

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  • Voltage drop test device and method for IR46 ammeter calibrating device
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  • Voltage drop test device and method for IR46 ammeter calibrating device

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Embodiment Construction

[0039] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0040] Such as figure 1 As shown, it includes voltage sampling circuit 1, voltage drop circuit, voltage sampling circuit 2, zero-crossing detection circuit, power supply circuit, TCP / IP network communication module and main controller, among which:

[0041] The voltage sampling circuit 1 is used to detect the waveform signal of the input voltage in real time;

[0042] Voltage dip circuit for simulating voltage sag and interruption events in the R46 standard. Voltage sag test a, reduce to 30%, last 0.5 cycle; voltage sag test b, reduce to 60%, last 1 cycle; voltage sag test c, reduce to 60%, last ...

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Abstract

The invention discloses a voltage drop test device and method for an IR46 ammeter calibrating device. The device comprises a voltage sampling circuit 1, a voltage drop circuit, a voltage sampling circuit 2, a zero-cross detection circuit, a power circuit, a TCP / IP network communication module, and a master controller. According to the method, the master controller controls the voltage sampling circuits 1 and 2 to complete detection of input and output voltage signals; the voltage drop circuit is controlled to complete simulation of a voltage drop event in an R46 standard; the zero-cross detection circuit is controlled to detect the frequency of the input voltage signal; the TCP / IP network communication module is controlled to complete real-time communication with an upper computer; and the voltage drop test of an IR46 ammeter is realized. The voltage drop test device and method have the advantages of multiple simulation scenes, efficient, rapid and accurate automatic test results, no need of manual test, and saving of manpower and time cost.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a voltage drop test device and method for an IR46 electric meter verification device. Background technique [0002] With the continuous progress of society and the vigorous development of national economy, electric energy plays an increasingly important role in people's life. The quality of electric energy directly affects the overall benefit of the national economy. In recent years, with the continuous increase of non-linear and impact loads, power quality problems have continued to worsen, and some power quality problems that have not been paid attention to before have gradually emerged, such as voltage sags and short-term interruptions. [0003] In the latest international recommendations for R46 electric energy meters, clear definitions and standards are given for voltage sags and interruptions. Therefore, it is necessary to artificially simulate voltage dips (sags a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M7/08
CPCG01M7/08
Inventor 范建华付刚朱建国邓召魁
Owner QINGDAO TOPSCOMM COMM
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