ABOUT ACCURACY OF SYNCHRONOUS TIME IN UPS OF RUSSIA
The article presents the results of experimental studies of the accuracy of synchronous time in the Unified Power System of Russia. A description is given of experiments based on recording deviations of the clock, clocked by the voltage signal of the power network, and on the analysis of data from p...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | Russian |
| Published: |
North Caucasus Federal University
2022-02-01
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| Series: | Вестник Северо-Кавказского федерального университета |
| Subjects: | |
| Online Access: | https://vestnikskfu.elpub.ru/jour/article/view/114 |
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| Summary: | The article presents the results of experimental studies of the accuracy of synchronous time in the Unified Power System of Russia. A description is given of experiments based on recording deviations of the clock, clocked by the voltage signal of the power network, and on the analysis of data from phasor measuring unit. A constant average daily average lag of synchronous time from astronomical time of 1 s was revealed, this is due to the systematic error of frequency sensors. It is shown that even with the use of modern sensors and perfect frequency correction, the annual deviation of synchronous time can reach +9 s. The expediency of using synchronous time for monitoring instead of measuring the frequency of phase angles of voltages measured by phasor measuring unit is substantiated. |
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| ISSN: | 2307-907X |