A New Method Of Frequency Measurement Of Power System

Author

Yulan, Chen ; Cunyang, Fang

Author_Institution

Shenzhen Branch, Nanjing

fYear

2007

fDate

23-25 May 2007

Firstpage

2522

Lastpage

2525

Abstract

Frequency is an important parameter about voltage quality of power system. The paper presents a new method of frequency measurement of power system. Principle of the method is to calculate the interval between two zero point of input wave. Quadratic interpolation technique is used to search the zero point. The input wave being used to search zero point is not the conventional wave of instantaneous sampled-data, but the wave of real or reactive component calculated by Discrete Fourier Transform. The method combines the advantage of Discrete Fourier Transform and quadratic interpolation technique. It eliminates the influence of harmonic and DC component, and has good anti-disturbance performance and precision.

Keywords

discrete Fourier transforms; frequency measurement; power supply quality; power system measurement; antidisturbance performance; discrete Fourier transform; power system frequency measurement; power system voltage quality; quadratic interpolation technique; reactive component; Discrete Fourier transforms; Frequency measurement; Interpolation; Power harmonic filters; Power measurement; Power system harmonics; Power system measurements; Power system protection; Sampling methods; Voltage; Discrete Fourier Transform; frequency measurement; quadratic interpolation;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics and Applications, 2007. ICIEA 2007. 2nd IEEE Conference on

Conference_Location

Harbin

Print_ISBN

978-1-4244-0737-8

Electronic_ISBN

978-1-4244-0737-8

Type

conf

DOI

10.1109/ICIEA.2007.4318865

Filename

4318865