Abstract
The main objective of the present paper is to introduce a new approach for measuring and calculation of fundamental power components in the case of various distorted waveforms including those containing harmonics. The parameters of active, reactive, apparent power and power factor, are measured and calculated by using Goertzel algorithm instead of fast Fourier transformation which is commonly used. The main advantage of utilizing Goertzel algorithm is to minimize computational load and trigonometric equations. The parameters measured in the new technique are applied to a fixed capacitor–thyristor controlled reactor based static VAr compensation system to achieve accurate power factor correction for the first time. This study is implemented both simulation and experimentally.
Highlights
Reactive power compensation is a very important issue in the expansion planning and operation of electrical power systems
Experimental results In this experimental work, the effect of the new measuring algorithm on the fixed capacitor in parallel (FC)–thyristor controlled reactor (TCR) based static VAr compensator (SVC) system is examined for reactive power compensation
Harmonic filter for any harmonic order is not designed in the experimental study. In this experimental work, a new method is developed for the fixed capacitor–thyristor controlled reactor (FC–TCR) based SVC system
Summary
Reactive power compensation is a very important issue in the expansion planning and operation of electrical power systems. Traditional solution of the compensation is to use fixed-capacitors or reactors for providing and absorbing reactive power respectively (Miller 1982; De La Rosa 2006). Another way of the compensation is to use static VAr compensator (SVC) to compensate reactive power. Static VAr systems are generally used in the fast changing events such as arc furnaces and steel industry where the current alters rapidly (El-Saady 2001). This type of industry and rising population of power electronics-based loads causes the increase of harmonic distortion in the power systems. It is needed to be developed more precise measurement method for existing distortions
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