Title :
A New Method Of Frequency Measurement Of Power System
Author :
Yulan, Chen ; Cunyang, Fang
Author_Institution :
Shenzhen Branch, Nanjing
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;
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
DOI :
10.1109/ICIEA.2007.4318865
