Title :
The analysis of frequency deviation on synchrophasor calculation and correction methods
Author :
Zhao, Hong-shan ; Liu, Zhen-yong ; Song, Guo-wei ; Wei, Dong-li
Author_Institution :
Dept. of Electr. Eng., North China Electr. Power Univ., Baoding, China
Abstract :
This paper gave a brief introduction of Phasor Measurement Unit (PMU) in the Wide Area Measurement System (WAMS) of power systems, and studied the error characteristics of the discrete Fourier calculation of phasor in the condition of a sinusoidal signal with frequency deviation from nominal frequency. Then, a program calculated the phasor using discrete Fourier transform under the platform of MATLAB was implemented, and the simulating analysis of off-nominal frequency was studied in detail. The simulating results showed that the error characteristics of calculated phasor had taken on the error ellipse shape. Finally, several methods of error correction were introduced for calculating the accurate phasor in power systems.
Keywords :
discrete Fourier transforms; power system measurement; correction methods; discrete Fourier transform; frequency deviation; frequency deviation analysis; nominal frequency; phasor measurement unit; power systems; synchrophasor calculation; wide area measurement system; Analytical models; Discrete Fourier transforms; Frequency; MATLAB; Phasor measurement units; Power system analysis computing; Power system measurements; Power system simulation; Shape; Wide area measurements; DFT; Error correction; Error ellipse; Synchrophasor;
Conference_Titel :
Sustainable Power Generation and Supply, 2009. SUPERGEN '09. International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-4934-7
DOI :
10.1109/SUPERGEN.2009.5348320
