Distribution electric energy quality analysis meter and analyzing method

Abstract

The invention discloses a distribution electric energy quality analyzing method, which comprises the following steps: (1) respectively performing current transformation and voltage transformation on three-phase current and voltage, (2) filtering the three-phase current and voltage and performing AD conversion, (3) calculating each harmonic quantity of the current and voltage, and (4) acquiring each harmonic value, power factor, each harmonic content, whole harmonic aberration rate, active power and reactive power. The analyzing method can measure the relative parameters of three-phase current and voltage at real time and analyze and process, find out the over-standard data and store and ensure stable running of power grid. The invention also discloses a distribution electric energy quality analysis meter using the analyzing method.

Description

technical field [0001] The invention belongs to the field of electricity utilization, and in particular relates to an analysis instrument and analysis method capable of effectively detecting the quality of electricity distribution. Background technique [0002] Since the 1960s and 1970s, due to the wide application of high-power converter equipment and electronic voltage regulation equipment, a large number of household appliances generally use thyristors and other non-linear loads, resulting in increasingly serious waveform distortion of power systems, coupled with competition and Making full use of electrical materials, electrical equipment is increasingly inclined to work in the critical condition of its magnetization curve or even in the saturation section, resulting in serious distortion of the excitation current waveform of these electrical equipment, which seriously endangers the safe operation of the power system, thus making the harmonic problem double Attention and...

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Problems solved by technology

[0002] Since the 1960s and 1970s, due to the wide application of high-power converter equipment and electronic voltage regulation equipment, a large number of household appliances generally use thyristors and other non-linear loads, resulting in increasingly serious waveform distortion of power systems, coupled with competition and Making full use of electrical materials, electrical equipment is increasingly inclined to work in the critical condition of its magnetization curve or even in the saturation section, resulting in serious distortion of the excitation current waveform of these electrical equipment, which seriously endangers the safe operation of the power system, thus making the harmonic problem double Attention and concern of all countries

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