Title :
A method of determination of fundamental frequency´s symmetric sequences and higher harmonics of three-phase voltage systems
Author :
Shcherba, Anatoliy A. ; Makov, D.K.
Author_Institution :
Dept. of Electr. Power Supply, Technol. Syst. Inst. of Electrodynamics, Kiev, Ukraine
Abstract :
The proposed method of digital determination of symmetric sequences of three-phase electric voltage. It uses the following steps: tuning the frequency of reading (a multiple of 3) instantaneous values to the network´s fundamental frequency; analog-digital transformation of instantaneous values of net-work´s three-phase voltages with memorizing; selection of codes containing the desired symmetric sequences; selection of fundamental frequency voltage´s codes. This method is simpler and more precise comparing to those well-known.
Keywords :
analogue-digital conversion; frequency estimation; harmonics suppression; power supply quality; analog-digital transformation; code selection; frequency tuning; fundamental frequency symmetric sequences determination; fundamental frequency voltage code; higher harmonics determination; three-phase voltage system; Accuracy; Frequency measurement; Harmonic analysis; Indexes; Power system harmonics; Registers; Voltage measurement; asymmetry coefficient; indexes of electric power´s quality; negative phase-sequence voltage system; positive phase-sequence voltage system;
Conference_Titel :
Intelligent Energy and Power Systems (IEPS), 2014 IEEE International Conference on
Conference_Location :
Kyiv
Print_ISBN :
978-1-4799-2265-9
DOI :
10.1109/IEPS.2014.6874206
