NDLI: Electrical power quality indices estimation during severe signal distortions in medium voltage networks

Content Provider	IEEE Xplore Digital Library
Author	Terzija, V. Stanojevic, V. Rebizant, W.
Copyright Year	2008
Description	Author affiliation: Sch. of Electr. & Electron. Eng., Univ. of Manchester, Manchester (Terzija, V.)
Abstract	In the paper the application of nonlinear and non-recursive Newton Type estimation numerical algorithm for voltage and current spectra estimation during off-nominal frequency condition and severe signal distortions is presented. The algorithm is not sensitive to power system frequency changes and voltage and current amplitude distortions. It is an important improvement with regard to the commonly utilized approaches based on e.g. Discrete Fourier transform, or other approaches derived in spectral domain. The unknown frequency is simultaneously measured (estimated) with the spectrum of the input signal. The algorithm is tested using voltages and currents obtained from the ATP-EMTP simulation program, using Simulink model and in laboratory conditions. In the first test, a typical MV network example is used. By this, a motor start and a short circuit followed with the current transformers saturation transients are particularly analyzed. The purpose of Simulink test is to compare the NTA algorithm with FFT. Laboratory test consists of connecting a synchronous generator to the network, when synchronization is not ideal and severe disturbance of generator currents and voltages occur.
Starting Page	1
Ending Page	9
File Size	542697
Page Count	9
File Format	PDF
ISBN	9781424419036
DOI	10.1109/TDC.2008.4517182
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-04-21
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Power quality Medium voltage Frequency estimation Circuit testing Nonlinear distortion Laboratories Transient analysis Synchronous generators Power system measurements Discrete Fourier transforms ATP-EMTP simulations Newton Type Estimation Algorithm power quality nonlinear estimation
Content Type	Text
Resource Type	Article

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