A New Electric Power Harmonic Detection Scheme

Chao Wang

doi:10.4028/www.scientific.net/AMM.341-342.1308

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 341-342A New Electric Power Harmonic Detection Scheme

A New Electric Power Harmonic Detection Scheme

Abstract:

Microcomputer relay is a kind of intelligent devices used for detecting and protecting power system. Whenever, it quickly calculate whether the power system is wrong or not on the basis of the fundamental and harmonics detected from power system, And according to the calculating results to obviate the troubles, among them, the fundamental and harmonics acquired accurately in time is the most important part of the power system protection process. The basic principle of d-q fundamental and harmonics voltage detection is presented and on this basis a fundamental and harmonics detection method of presumption the transformation frequency is put forward. The results of the theoretical analysis and MATLAB simulation indicate that the d-q method in this paper can precisely detect the voltage and frequency change of the power system in time, whether the distortion voltage or not in three-phase power system .

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Periodical:

Applied Mechanics and Materials (Volumes 341-342)

Pages:

1308-1312

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.341-342.1308

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Online since:

July 2013

Authors:

Chao Wang

Keywords:

D-Q Transformation, Fundamental Detection, Harmonics Detection, Power System

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