NDLI: A Characterized Method for the Real-Time Compensation of Power System Measurement Transducers

Content Provider	IEEE Xplore Digital Library
Author	Crotti, G. Gallo, D. Giordano, D. Landi, C. Luiso, M.
Copyright Year	1963
Abstract	This paper presents a real-time compensation method for the improvement of the frequency behavior of measurement transducers already operating or to be installed in transmission and distribution grids. The developed technique relies on the identification of an infinite impulse response digital filter with complex frequency response equal to the inverse of the transducer, whose parameters are evaluated through a hybrid scheme based on the combination of a stochastic and a deterministic procedure. Attention is focused on the algorithm identification capability, on the sensitivity to the weighting array introduced in the optimization cost function, and on the propagation uncertainty associated with the algorithm input quantities. Such investigation has been carried out on a circuit model of a resistive divider thought for medium-voltage (MV) measurements. To estimate the uncertainty associated with the identified filter frequency behavior, the Monte Carlo method has been implemented. The overall improvement varies with the frequency; at 10 kHz, the improvement for both the ratio as well as phase error is of two orders of magnitude. The uncertainty, estimated with 10 500 draws, associated with the filter is lower or equal to the input ones all over the 10 Hz-50 kHz frequency range. The algorithm is finally applied to a laboratory resistive capacitive divider, which is the low-voltage stage of an MV divider. The obtained improvement is of two orders of magnitude for the ratio and phase errors over all the considered frequency range.
Sponsorship	IEEE Instrumentation and Measurement Society Bureau international des poids et mesures IEEE International Bureau of Weights and Measures (BIPM) URSI NBS Agency Ind. Sci. & Technol., Min. Int. Trade & Ind. Sci. Council Japan International Union of Pure and Applied Physics (IUPAP) NIST NRCC National Conference of Standards Laboratories (NCSL) Allen Osborne Associates Andeen-Hagerling, Inc. Ballantine Lab. Inc. Clarke-Hess Communications Research Corp. Fluke Corporation Guildline Instruments Hewlett-Packard Co. Julie Res. Lab. Inc. Keithley Instruments, Inc. Measurements International Ltd. Canada QuadTech Inc. Quantum Design Inc. Rotek Instrum. Corp. Tegam Inc. Tektronix Inc
Starting Page	1398
Ending Page	1404
Page Count	7
File Size	1946797
File Format	PDF
ISSN	00189456
Volume Number	64
Issue Number	6
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Transducers Frequency measurement Frequency response Frequency conversion Uncertainty Real-time systems Voltage measurement voltage measurement. Digital filter measurements optimization power systems smart grids voltage divider voltage measurement
Content Type	Text
Resource Type	Article
Subject	Instrumentation Electrical and Electronic Engineering

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