Processing Algorithm Adopted in Power System Harmonics Measurement


Thip Manmek

Control and Instrumentation and Mechatronics Engineering Department,

Mahanakorn University of Technology. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.


Manuscript received March 10, 2012

Revised March 31, 2012




Harmonics measurement in power system plays an important part in measuring and improving power quality. Many methods have been proposed to determine the amplitude and phase of fundamental and harmonic components of time-varying waveform. As this information is essential in several applications including protection, control and monitoring in power system. The three basic considerations when selecting the suitable method are; the response time, implementation complexity and accuracy. This paper presents a brief review of different advanced signal processing techniques proposed for used in power systems applications. The basic requirements of harmonic measurements in power system are generally described. The method applied for measuring harmonics are analyzed and discussed.


Keywords: DFT, least squares algorithm, Kalman filter, Fuzzy logic and Power system Disturbance Quantities

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