NDLI: Filtering and processing of harmonic signals using averaging technique in digital relays

Content Provider	IEEE Xplore Digital Library
Author	Javinani, N.K. Abyaneh, H.A. Mazlumi, K.
Copyright Year	2013
Description	Author affiliation: Zanjan Univ. of Technol., Zanjan, Iran (Mazlumi, K.) \|\| Amir Kabir Univ. of Technol., Tehran, Iran (Javinani, N.K.; Abyaneh, H.A.)
Abstract	This is a fact that Digital Relay systems deal with harmonic signals. Switching convertors are one of the most significant generators of such signals. Filtering and processing of harmonic signals are considered as very important factors in the process of power systems controlling. In this study, typical harmonic signals are processed using Averaging Technique. Also this work considers the A.T's (Averaging Technique) property in modeling the prevailing behaviors and presents a method, that is comparable to low-pass filter (specially type one), for filtering operation that could be used in Digital Relays. In order to evaluate the proper functioning of the mentioned method, we have utilized distortion indexes such as THD, TIHD and TSHD. In fact one the main goals of this paper is that to present a method which can be applied for attaining the most minimal harmonic pollution (in comparison with the low-pass filter)in digital relays. In Averaging Technique, the Averaging Frequency is highly significant yet in low-pass filter, the important factors are gain factor, cutoff frequency and damping factor. Finally, in this paper we compare the efficiency of Averaging Technique with two types of low-pass filter.
Starting Page	1
Ending Page	8
File Size	655947
Page Count	8
File Format	PDF
e-ISBN	9781479927753
DOI	10.1109/SEGE.2013.6707927
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-08-28
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Digital Relays Total Inter-Harmonic Distortion (TIHD) Total Sub-Harmonic Distortion Harmonic Signals Averaging Technique (A.T.) Average Operator (AO.) Total Harmonic Distortion (THD) Low-pass Filter (Type 1 and 2)
Content Type	Text
Resource Type	Article

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