Yang, L. and Judd, M.D. and Bennoch, C.J. (2004) Time delay estimation for UHF signals in PD location of transformers. In: 2004 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, 2004. CEIDP '04., 2004-10-17 - 2004-10-20, Boulder.
Full text not available in this repository. (Request a copy from the Strathclyde author)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.
| Item type: | Conference or Workshop Item (Paper) |
|---|---|
| ID code: | 38302 |
| Keywords: | time delay, estimation, uhf signals, pd location, transformers, Electrical engineering. Electronics Nuclear engineering |
| Subjects: | Technology > Electrical engineering. Electronics Nuclear engineering |
| Department: | Faculty of Engineering > Electronic and Electrical Engineering |
| Related URLs: | |
| Depositing user: | Pure Administrator |
| Date Deposited: | 07 Mar 2012 16:59 |
| Last modified: | 04 Oct 2012 17:16 |
| URI: | http://strathprints.strath.ac.uk/id/eprint/38302 |
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