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Networking-supportive electric energy measuring completion acceptance device

A technology for completion acceptance and electric energy measurement, which is applied in the direction of measuring devices, measuring electrical variables, and measuring electricity, can solve problems such as low work efficiency, incomplete guarantee of safety and wiring accuracy, and measurement errors, so as to reduce technical And the requirements of cooperation, improve the reliability of acceptance, and help the effect of work efficiency

Inactive Publication Date: 2015-05-06
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the means of inspection is limited to using a multimeter to check the continuity of the circuit, and some terminals need to be removed. There are certain requirements, and complete guarantees cannot be obtained in terms of safety and wiring correctness; the most important thing is that the polarity of the transformer, especially the transformation ratio, cannot be verified, and there is a hidden danger of measurement error; the statistical data of on-site acceptance is mainly manual Records, there is no three-party Internet of Things network consisting of the asset number of the metering device, the transformation ratio and polarity data corresponding to the device, and the master station, and the work efficiency is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0029] 1) The main control module sends commands to the transformer detection module, and the detection signal output part of the transformer detection module outputs a 3KHZ square wave voltage signal. At this time, a weak signal is coupled from the other side of the transformer, and the weak signal is transmitted to The detection signal input part, the detection signal input part amplifies the coupled weak signal through the OP27 precision operational amplifier chip amplifier circuit, and then transmits the amplified signal to the main control module;

[0030] 2) The main control module calculates the amplitude of the input signal after performing AD conversion on the above signal, and the main control module controls the amplification factor of the OP27 precision operational amplifier chip amplification circuit according to the signal amplitude.

[0031] 3) The main control module calculates the transformation ratio of the measured transformer from the ratio of the two amplit...

specific Embodiment 2

[0037] When measuring transformers remotely, use two networkable electric energy measurement completion acceptance devices to complete the completion. The specific steps are as follows:

[0038] 1) Set the main control module of one networkable electric energy metering completion acceptance device as the transmitting end, and set the main control module of the other networkable electric energy metering completion acceptance device as the receiving end;

[0039] 2) The main control module set as the transmitter sends commands to the transformer detection module at the transmitter, so that the detection signal output part of the transformer detection module outputs a 3KHZ square wave voltage signal. At this time, the other side of the transformer will couple a weak The signal is transmitted to the detection signal input part of the transformer detection module at the receiving end, and the detection signal input part of the transformer detection module at the receiving end amplif...

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Abstract

The invention relates to the technical field of electric energy measuring, in particular to a networking-supportive electric energy measuring completion acceptance device which is a wireless inspector aiming at safety and wiring correctness of an electric energy measuring device, especially an instrument used for correctness inspection under a power outage state. The networking-supportive electric energy measuring completion acceptance device comprises a body and a control circuit board, a display screen is arranged on the body, the control circuit board is mounted in the body, a power source module, a main control module, a transformer detection module, a communication module, an input module and a display module, the main control module is connected with the the transformer detection module, the communication module, the input module and the display module, the input module sends input signals to the main control module, the transformer detection module transmits detection signals to the main control module, the main control module transmits transformer polarity and transformation ratio information to the display module for displaying, and the power source module is connected with the main control module, the transformer detection module, the communication module, the input module and the display module.

Description

technical field [0001] The invention relates to the field of electric energy measurement technology, and is a wireless checker aimed at the safety of the electric energy metering device and the correctness of the wiring, especially a device for correctness in the power failure state. Instruments for inspection. Background technique [0002] In the process of installation and wiring of metering devices, the major of power system meter installation and connection needs to carry out completion acceptance work before power transmission, mainly including safety and correctness inspection. At present, the means of inspection is limited to using a multimeter to check the continuity of the circuit, and some terminals need to be removed. There are certain requirements, and complete guarantees cannot be obtained in terms of safety and wiring correctness; the most important thing is that the polarity of the transformer, especially the transformation ratio, cannot be verified, and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00G01R31/02G01R31/06G01R29/20
Inventor 李华徐向军李林道王思民丁子剑
Owner STATE GRID CORP OF CHINA
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