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Phasor analyzer

A phasor analysis and phasor technology, applied in the field of phasor analyzers, which can solve the problem of whether the voltage line and the current line are connected incorrectly and whether the connection is wrong, and the measurement personnel have low knowledge and technical level, and lack of professional knowledge. Reliability and other issues, to simplify the analysis and judgment process, avoid cumbersome or inaccurate, and ingenious design.

Pending Publication Date: 2017-05-31
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that currently due to the low relevant knowledge and technical level of surveyors or the unreliable mastery of professional knowledge, it is easy to make mistakes when judging the correctness of the connection of voltage lines and current lines in the three-phase secondary circuit Whether the voltage line and the current line in the three-phase secondary circuit are wrongly connected and the specific form of the wrong line is correctly analyzed and judged. For this purpose, a method for online judgment of the voltage line and current line in the three-phase secondary circuit is provided. Phasor analyzer for correct wiring

Method used

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Embodiment Construction

[0017] see Figure 1-3 , the present invention comprises base 1 and dial 2, is provided with central shaft 3 on dial 2, and the rotatable current phasor pointer 4 that is used for indicating current phasor is housed on central shaft 3; , where the 0° scale line coincides with the 360° scale line and is perpendicular to the horizontal line; the line voltage phasors arranged clockwise at 120° are marked on the dial 2 , , and phase voltage phasor , , , and the phase voltage phasor Pointing to 0° scale line, line voltage phasor leading phase voltage phasor The angle is 30°, and each line voltage phasor and phase voltage vector has its corresponding reverse phasor.

[0018] In this example .

[0019] In this embodiment, the base 1 is provided with a boss 5, the top surface of the boss 5 is a slope, and the base 1 is also provided with a ring handle 11, which is convenient for the operator to hold the ring handle 11 for test operation; the dial 2 is fixed on the...

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Abstract

The invention relates to a detection tool in an electric power system, in particular to a phasor analyzer. The analyzer comprises a base and a dial. A central shaft is arranged on the dial. A rotatable current phasor pointer used for indicating the current phasor is installed on the central shaft. Scale lines for representing angles are marked on the disc face of the dial, wherein the 0-degree scale line and 360-degree scale line coincide with each other and are perpendicular to a horizontal line. Line voltage phasors (shown in the description) and phase voltage phasors (shown in the description) which are successively arranged in 120 degrees along the clockwise direction are marked on the disc face of the dial. The phase voltage phasor (shown in the description) points to the 0-degree scale line and the angle between the line voltage phasor (shown in the description) and the leading phase voltage phasor (shown in the description) is 30 degrees. A corresponding reverse phasor is arranged for each line voltage phasor and a corresponding reverse phasor is arranged for each phase voltage phaser. The analyzer is simple to operate and judges precisely, thereby facilitating that an operator finds out the phase voltage to which the current phasor belongs and judges the accuracy of wiring of a current secondary loop by rotating the current phasor pointer, and analysis and determination processes are simplified.

Description

technical field [0001] The invention relates to a detection tool in a power system, in particular to a phasor analyzer used for online judgment of the correctness of the connection of voltage lines and current lines in a three-phase secondary circuit. Background technique [0002] At present, phasor analysis is often carried out in electric power production, training and teaching, professional appraisal and assessment, especially in electric power marketing, electricity inspection and inspection, and transformer operation and maintenance. In the phasor analysis in the three-phase secondary circuit of the power system, it is often necessary to analyze the phase relationship between the three-phase voltage and the three-phase current, so as to conclude that the wiring of the voltage line and the current line in the three-phase secondary circuit is artificial Deliberately wrong connection or wrong connection due to staff mistakes, and then judge the specific wrong wiring form o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/04
CPCG01R31/67
Inventor 刘斌李国胜代文芳贺攀余念群李俊余卫民熊健高浦润傅军杨涛
Owner STATE GRID CORP OF CHINA
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