Time delay estimation for UHF signals in PD location of transformers

L. Yang; M.D. Judd; C.J. Bennoch

doi:10.1109/CEIDP.2004.1364275

Time delay estimation for UHF signals in PD location of transformers

L. Yang, M.D. Judd, C.J. Bennoch

Electronic And Electrical Engineering

Research output: Contribution to conference › Paper

37 Citations (Scopus)

Abstract

Time delay estimation (TDE) is essential for PD location using the UHF technique. However, noise and effects of multi-path propagation are two main problems affecting the accuracy of the estimate. Comparing two methods, which are based on cumulative energy curve and power curve respectively, a cross correlation based method is employed to achieve the estimation. A high-pass filter is applied to the UHF signal to eliminate operating noises. The phase characteristic of the filter is designed to be linear for making the time delay a constant in terms of frequency. A window in the time domain is selected to reduce the effect of multi-path propagation.

Original language	English
Pages	414-417
Number of pages	3
DOIs	https://doi.org/10.1109/CEIDP.2004.1364275
Publication status	Published - Oct 2004
Event	2004 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, 2004. CEIDP '04. - Boulder, United States Duration: 17 Oct 2004 → 20 Oct 2004

Conference

Conference	2004 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, 2004. CEIDP '04.
Country/Territory	United States
City	Boulder
Period	17/10/04 → 20/10/04

Keywords

time delay
estimation
uhf signals
pd location
transformers

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10.1109/CEIDP.2004.1364275

Cite this

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title = "Time delay estimation for UHF signals in PD location of transformers",

abstract = "Time delay estimation (TDE) is essential for PD location using the UHF technique. However, noise and effects of multi-path propagation are two main problems affecting the accuracy of the estimate. Comparing two methods, which are based on cumulative energy curve and power curve respectively, a cross correlation based method is employed to achieve the estimation. A high-pass filter is applied to the UHF signal to eliminate operating noises. The phase characteristic of the filter is designed to be linear for making the time delay a constant in terms of frequency. A window in the time domain is selected to reduce the effect of multi-path propagation.",

keywords = "time delay, estimation, uhf signals, pd location, transformers",

author = "L. Yang and M.D. Judd and C.J. Bennoch",

year = "2004",

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doi = "10.1109/CEIDP.2004.1364275",

language = "English",

pages = "414--417",

note = "2004 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, 2004. CEIDP '04. ; Conference date: 17-10-2004 Through 20-10-2004",

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TY - CONF

T1 - Time delay estimation for UHF signals in PD location of transformers

AU - Yang, L.

AU - Judd, M.D.

AU - Bennoch, C.J.

PY - 2004/10

Y1 - 2004/10

N2 - Time delay estimation (TDE) is essential for PD location using the UHF technique. However, noise and effects of multi-path propagation are two main problems affecting the accuracy of the estimate. Comparing two methods, which are based on cumulative energy curve and power curve respectively, a cross correlation based method is employed to achieve the estimation. A high-pass filter is applied to the UHF signal to eliminate operating noises. The phase characteristic of the filter is designed to be linear for making the time delay a constant in terms of frequency. A window in the time domain is selected to reduce the effect of multi-path propagation.

AB - Time delay estimation (TDE) is essential for PD location using the UHF technique. However, noise and effects of multi-path propagation are two main problems affecting the accuracy of the estimate. Comparing two methods, which are based on cumulative energy curve and power curve respectively, a cross correlation based method is employed to achieve the estimation. A high-pass filter is applied to the UHF signal to eliminate operating noises. The phase characteristic of the filter is designed to be linear for making the time delay a constant in terms of frequency. A window in the time domain is selected to reduce the effect of multi-path propagation.

KW - time delay

KW - estimation

KW - uhf signals

KW - pd location

KW - transformers

U2 - 10.1109/CEIDP.2004.1364275

DO - 10.1109/CEIDP.2004.1364275

M3 - Paper

SP - 414

EP - 417

T2 - 2004 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, 2004. CEIDP '04.

Y2 - 17 October 2004 through 20 October 2004

ER -

Time delay estimation for UHF signals in PD location of transformers

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Keywords

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