Fault discrimination by power protections during transient disturbances
Електронний науковий архів Науково-технічної бібліотеки Національного університету "Львівська політехніка"
Переглянути архів Інформація| Поле | Співвідношення | |
| Title |
Fault discrimination by power protections during transient disturbances
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| Creator |
Musierowicz, Kazimierz
Marcinkowski, Zygmunt |
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| Description |
During first dozens of milliseconds from the moment when the fault occurs, the transient components due to the fault can appear in the short circuit currents and voltages. The latter could have a form of either the attenuated oscillating components or the non-periodical components making troubles to be filtered. Then, the highly inconvenient conditions for the fast short-circuit protections can appear due to specifics of the measuring signals disturbances the separation of which is very difficult. Traditionally, the measuring signals disturbances are eliminated using either the Fourier transform (FT) or the Fast Fourier Transform (FFT). The different tool of signal analysis is the wavelet transform (WT). In the paper, referring to an example of typical non-stationary signals, a comparison of the both analysis methods referred to the protective measuring algorithms is carried out. A special attractiveness of the wavelet transform is proven.
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| Date |
2017-04-05T14:47:43Z
2017-04-05T14:47:43Z 2003 |
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| Type |
Article
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| Identifier |
Musierowicz K. Fault discrimination by power protections during transient disturbances / Kazimierz Musierowicz, Zygmunt Marcinkowski // Вісник Національного університету «Львівська політехніка». – 2003. – № 487 : Електроенергетичні та електромеханічні системи. – С. 96–102. – Bibliografia: 8 nazw.
http://ena.lp.edu.ua:8080/handle/ntb/37181 |
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| Language |
pl
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| Format |
application/pdf
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| Publisher |
Видавництво Національного університету «Львівська політехніка»
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