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Alternating current phase recognition instrument and alternating current phase recognition method

A phase identification, alternating current technology, applied in the phase angle between voltage and current, instruments, measuring electrical variables and other directions, can solve the problems of three-phase current imbalance, loss of the country and the people, burning transformers, etc., to achieve accurate timing, Reliable work and intuitive effect

Inactive Publication Date: 2015-05-27
SHANDONG EAGLE INTELLIGENT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the unbalanced power consumption of the three phases, one phase or two phases are overloaded, resulting in unbalanced three-phase current, resulting in increased line loss, and even burning the transformer, causing fires, etc., causing great losses to the country and the people.

Method used

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  • Alternating current phase recognition instrument and alternating current phase recognition method
  • Alternating current phase recognition instrument and alternating current phase recognition method
  • Alternating current phase recognition instrument and alternating current phase recognition method

Examples

Experimental program
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Effect test

Embodiment 1

[0075] Such as figure 1 As shown, in the power transmission line, the three-phase four-wire power transmission cable 3 is connected from the transformer 1 and connected to the user junction box 4 . The alternating current drawn from the transformer 1 at the end of the distribution network is connected to the host 2 of the phase recognition instrument, and the alternating current drawn from the user junction box 4 is connected to the extension 5 of the phase recognition instrument. Since the main unit 2 of the phase recognition instrument is connected to one end of the distribution network, the main unit 2 of the phase recognition instrument can determine the A, B, and C three-phase phase lines of the alternating current. B and C three-phase phase lines, but at the same time, the phase information on the main unit 2 of the phase recognition instrument and the extension 5 of the phase recognition instrument are the same. On the side of the transformer 1, the A, B, and C three-p...

Embodiment 2

[0143] The difference between Embodiment 2 and Embodiment 1 lies in that the working process of the phase recognizer extension 5 and the phase recognizer host 2 are different, and their hardware structures and circuit settings are the same.

[0144] Such as Figure 18 As shown, the workflow of phase recognition instrument extension 5 in embodiment 2 comprises the following steps:

[0145] Step 4001, press a button;

[0146] When phase identification is required, the worker presses a button connected to the first central processing unit;

[0147] Step 4002, determine the real time;

[0148] After the first central processing unit detects that the button is pressed, the real time is determined by the data sent in by the first clock synchronization module;

[0149] Step 4003, whether the time is 50s before the current minute;

[0150] The first central processing unit judges whether the number of seconds of the current time is within the first 50s of the current time, if it i...

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Abstract

The invention discloses an alternating current phase recognition instrument and an alternating current phase recognition method, and belongs to the field of power detection instruments. The alternating current phase recognition instrument comprises a phase recognition instrument main unit (2) connected with alternating current and a phase recognition instrument auxiliary unit (5) which is in wireless communication with the phase recognition instrument main unit. The alternating current phase recognition method comprises the following steps: (1), the phase recognition instrument auxiliary unit (5) sends a request instruction to the phase recognition instrument main unit (2); step 2, the phase recognition instrument main unit (2) receives the request instruction sent by the phase recognition instrument auxiliary unit (5), acquires the phase data of phase lines connected to the phase recognition instrument auxiliary unit (5), and returns the phase data to the phase recognition instrument auxiliary unit (5); step 3, the phase recognition instrument auxiliary unit (5) executes a phase judging method for phase judgment and display after receiving the phase data returned by the phase recognition instrument main unit (2). By means of the alternating current phase recognition instrument and the alternating current phase recognition method, the phases can be judged quickly and accurately, three-phase load distribution is performed according to the load, and load of the alternating current three-phase lines is balanced.

Description

technical field [0001] The invention relates to an alternating current phase recognition instrument and an alternating current phase recognition method, which belong to the field of electric power detection instruments. Background technique [0002] In the existing technology, after the three-phase lines of the low-voltage distribution network are connected from the transformer in the station area and enter the user junction box, when connecting at the user level, the A phase, B phase, and C phase of the AC power can no longer be distinguished, and they can only be connected at will. . Due to the unbalanced power consumption of the three phases, one or two phases are overloaded, resulting in unbalanced three-phase currents, resulting in increased line losses, and even burning transformers, causing fires, etc., causing great losses to the country and the people. Contents of the invention [0003] The technical problem to be solved by the present invention is: to overcome t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R25/00G01R29/18
Inventor 钟成义刘学强阮正涛
Owner SHANDONG EAGLE INTELLIGENT TECH